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20240528-BJava
Commit d419757d by Patryk Czarnik
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Inne przykłady pobierania danych z sieci

parent dfa0e9e3
Showing with 1724 additions and 3 deletions
PC28-RestKlient/src/main/java/pobieranie/Pobieranie1_URL.java 0 → 100644
package pobieranie;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
public class Pobieranie1_URL {
public static void main(String[] args) {
final String adres = "http://api.nbp.pl/api/exchangerates/tables/A/?format=json";
try {
URL url = new URL(adres);
// Od Java 21 bardziej zalecane jest:
// URI uri = new URI(adres);
// URL url = uri.toURL();
try(InputStream input = url.openStream()) {
// z input stream dane można czytać porcjami jako ciągi bajtów
// byte[] tablica_bajtow = new byte[1024];
// int ile = input.read(tablica_bajtow);
// System.out.println(new String(tablica_bajtow, 0, ile));
// ale tutaj całość pobrnaych danych zapiszemy do pliku
Files.copy(input, Path.of("waluty.json"), StandardCopyOption.REPLACE_EXISTING);
System.out.println("Gotowe");
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
PC28-RestKlient/src/main/java/pobieranie/Pobieranie2_HttpClient_DoPliku.java 0 → 100644
package pobieranie;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
public class Pobieranie2_HttpClient_DoPliku {
public static void main(String[] args) {
final String adres = "http://api.nbp.pl/api/exchangerates/tables/A/?format=json";
try {
URI uri = new URI(adres);
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder(uri).build();
HttpResponse<InputStream> response = client.send(request, BodyHandlers.ofInputStream());
System.out.println("response: " + response);
System.out.println("status: " + response.statusCode());
System.out.println("Content-Type: " + response.headers().firstValue("content-type").orElse("--"));
if(response.statusCode() != 200) {
return;
}
// body jest takiego typu, jaki wynika z użytego BodyHandler
try(InputStream input = response.body()) {
Files.copy(input, Path.of("waluty.json"), StandardCopyOption.REPLACE_EXISTING);
System.out.println("Gotowe");
}
} catch (IOException | URISyntaxException | InterruptedException e) {
e.printStackTrace();
}
}
}
PC28-RestKlient/src/main/java/pobieranie/Pobieranie3_HttpClient_String.java 0 → 100644
package pobieranie;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
public class Pobieranie3_HttpClient_String {
public static void main(String[] args) {
final String adres = "http://api.nbp.pl/api/exchangerates/tables/A/?format=json"; // spróbuj xml
try {
URI uri = new URI(adres);
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder(uri).build();
HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
System.out.println("response: " + response);
System.out.println("status: " + response.statusCode());
System.out.println("Content-Type: " + response.headers().firstValue("content-type").orElse("--"));
// if(response.statusCode() != 200) {
// return;
// }
// body jest takiego typu, jaki wynika z użytego BodyHandler
String body = response.body();
System.out.println("Długość stringa: " + body.length());
System.out.println(body);
} catch (IOException | URISyntaxException | InterruptedException e) {
e.printStackTrace();
}
}
}
PC28-RestKlient/src/main/java/pobieranie/Pobieranie4_JSON.java 0 → 100644
package pobieranie;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import jakarta.json.Json;
import jakarta.json.JsonArray;
import jakarta.json.JsonObject;
import jakarta.json.JsonReader;
import jakarta.json.JsonValue;
public class Pobieranie4_JSON {
public static void main(String[] args) {
final String adres = "http://api.nbp.pl/api/exchangerates/tables/A/?format=json";
try {
URI uri = new URI(adres);
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder(uri).build();
HttpResponse<InputStream> response = client.send(request, BodyHandlers.ofInputStream());
System.out.println("response: " + response);
System.out.println("status: " + response.statusCode());
System.out.println("Content-Type: " + response.headers().firstValue("content-type").orElse("--"));
if(response.statusCode() != 200) {
return;
}
// parsowanie JSONa z pomocą biblioteki Jakarta JSON (utworzone w Java EE 7 i dalej rozwijane)
// alternatywy: GSON, org.json, Jackson
JsonArray json;
try(JsonReader reader = Json.createReader(response.body())) {
json = reader.readArray();
} // tutaj już zamykamy połączenie
// zerowym (i jedynym) elementem tablicy jest {obiekt JSONowy} odpowiadający tabeli walut
JsonObject tabela = json.getJsonObject(0);
// bezpośrednio w tym obiekcie są takie pola, jak numer i data
System.out.println("Numer tabeli: " + tabela.getString("no"));
System.out.println("Data: " + tabela.getString("effectiveDate"));
// w polu rates znajduje się tablica zawierająca dane poszczególnych walut
JsonArray rates = tabela.getJsonArray("rates");
System.out.println("Liczba walut: " + rates.size());
System.out.println();
for(JsonValue rate : rates) {
// System.out.println(rate);
JsonObject rateObj = rate.asJsonObject();
String nazwa = rateObj.getString("currency");
String kod = rateObj.getString("code");
BigDecimal kurs = rateObj.getJsonNumber("mid").bigDecimalValue();
System.out.println(kod + " " + nazwa + ": " + kurs);
}
} catch (IOException | URISyntaxException | InterruptedException e) {
e.printStackTrace();
}
}
}
PC28-RestKlient/src/main/java/pogoda/PobierzPogode1.java 0 → 100644
package pogoda;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
// Pobieramy pogodę dla konkretnej lokalizacji (współrzędne Warszawy)
// i wypisujemy surowe dane JSON.
public class PobierzPogode1 {
public static void main(String[] args) {
String adres = "https://api.open-meteo.com/v1/forecast?latitude=52&longitude=21&current_weather=true";
try {
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder(new URI(adres)).build();
HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
String tekstJSON = response.body();
System.out.println(tekstJSON);
} catch (URISyntaxException | IOException | InterruptedException e) {
e.printStackTrace();
}
}
}
PC28-RestKlient/src/main/java/pogoda/PobierzPogode2.java 0 → 100644
package pogoda;
import jakarta.json.Json;
import jakarta.json.JsonObject;
import jakarta.json.JsonReader;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
// Pobieramy pogodę dla konkretnej lokalizacji (współrzędne Warszawy)
// parsujemy JSONa i wyciągamy informację o temperaturze
public class PobierzPogode2 {
public static void main(String[] args) {
String adres = "https://api.open-meteo.com/v1/forecast?latitude=52&longitude=21&current_weather=true";
try {
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder(new URI(adres)).build();
HttpResponse<InputStream> response = client.send(request, HttpResponse.BodyHandlers.ofInputStream());
JsonReader reader = Json.createReader(response.body());
JsonObject json = reader.readObject();
System.out.println("Cały JSON: " + json);
JsonObject weather = json.getJsonObject("current_weather");
System.out.println("weather: " + weather);
double temperatura = weather.getJsonNumber("temperature").doubleValue();
System.out.println("temperatura: " + temperatura);
} catch (URISyntaxException | IOException | InterruptedException e) {
e.printStackTrace();
}
}
}
PC28-RestKlient/src/main/java/pogoda/PobierzPogodeDlaMiasta.java 0 → 100644
package pogoda;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Scanner;
import jakarta.json.Json;
import jakarta.json.JsonArray;
import jakarta.json.JsonObject;
import jakarta.json.JsonReader;
import jakarta.json.JsonValue;
public class PobierzPogodeDlaMiasta {
private Scanner scanner = new Scanner(System.in);
private double lat;
private double lon;
private String miasto;
public static void main(String[] args) {
new PobierzPogodeDlaMiasta().run();
}
public void run() {
try {
System.out.print("Podaj nazwę miasta: ");
String szukane = scanner.nextLine();
if(znajdzMiasto(szukane)) {
pobierzIWypiszPogode();
}
} catch (Exception e) {
e.printStackTrace();
}
}
private boolean znajdzMiasto(String szukane) throws IOException {
URL url = new URL("https://geocoding-api.open-meteo.com/v1/search?name=" + szukane);
try(InputStream input = url.openStream();
JsonReader reader = Json.createReader(input)) {
JsonObject json = reader.readObject();
JsonArray results = json.getJsonArray("results");
if(results.isEmpty()) {
System.out.println("Brak znalezionych lokalizacji");
return false;
}
System.out.println("Znalezione lokalizacje:");
int i = 0;
for(JsonValue result : results) {
JsonObject resulto = result.asJsonObject();
//System.out.print(result);
System.out.printf("%2d: <%+.3f %+.3f> → %s, %s%n", i++,
resulto.getJsonNumber("latitude").doubleValue(),
resulto.getJsonNumber("longitude").doubleValue(),
resulto.getString("name"), resulto.getString("country"));
}
System.out.print("Wybierz numer lokalizacji: ");
i = scanner.nextInt();
if(i < 0 || i >= results.size()) {
return false;
}
JsonObject loc = results.getJsonObject(i);
lat = loc.getJsonNumber("latitude").doubleValue();
lon = loc.getJsonNumber("longitude").doubleValue();
miasto = loc.getString("name");
return true;
}
}
private void pobierzIWypiszPogode() throws IOException {
URL url = new URL("https://api.open-meteo.com/v1/forecast?latitude=" + lat + "&longitude="+ lon +"&current_weather=true&hourly=temperature_2m");
try(InputStream input = url.openStream();
JsonReader reader = Json.createReader(input)) {
JsonObject json = reader.readObject();
JsonObject weather = json.getJsonObject("current_weather");
System.out.printf("Bieżąca pogoda dla miasta %s:%n", miasto);
System.out.println(weather);
System.out.printf("Temperatura %.1f °C%n", weather.getJsonNumber("temperature").doubleValue());
System.out.printf("Wiatr: %.1f km/h%n", weather.getJsonNumber("windspeed").doubleValue());
}
}
}
PC28-RestKlient/src/main/java/pogoda/WyswietlPogodeDlaMiasta.java 0 → 100644
/*
* Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
* Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
*/
package pogoda;
import jakarta.json.Json;
import jakarta.json.JsonArray;
import jakarta.json.JsonObject;
import jakarta.json.JsonReader;
import java.awt.Color;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
/**
*
* @author kurs
*/
public class WyswietlPogodeDlaMiasta extends javax.swing.JFrame {
/**
* Creates new form WyswietlPogodeDlaWspolrzednych
*/
public WyswietlPogodeDlaMiasta() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() {
jSpinner1 = new javax.swing.JSpinner();
jSpinner2 = new javax.swing.JSpinner();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jLabel3 = new javax.swing.JLabel();
jLabel_Temperatura = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
jLabel9 = new javax.swing.JLabel();
jLabel10 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jSpinner1.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jSpinner1.setModel(new javax.swing.SpinnerNumberModel(52.0d, -90.0d, 90.0d, 1.0d));
jSpinner2.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jSpinner2.setModel(new javax.swing.SpinnerNumberModel(21.0d, -180.0d, 180.0d, 1.0d));
jLabel1.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jLabel1.setText("Szerokość geograficzna");
jLabel2.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jLabel2.setText("Długość geograficzna");
jButton1.setFont(new java.awt.Font("Segoe UI", 1, 24)); // NOI18N
jButton1.setText("Pobierz pogodę");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jLabel3.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jLabel3.setText("Temperatura");
jLabel_Temperatura.setFont(new java.awt.Font("Segoe UI", 1, 18)); // NOI18N
jLabel_Temperatura.setText("jLabel4");
jLabel4.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jLabel4.setText("Miasto:");
jTextField1.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jTextField1.setText("miasto");
jTextField1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField1ActionPerformed(evt);
}
});
jLabel5.setFont(new java.awt.Font("Segoe UI", 0, 15)); // NOI18N
jLabel5.setText("Ludność:");
jLabel6.setFont(new java.awt.Font("Segoe UI", 0, 15)); // NOI18N
jLabel6.setText("Wysokość npm");
jLabel7.setFont(new java.awt.Font("Segoe UI", 0, 15)); // NOI18N
jLabel7.setText("jLabel7");
jLabel8.setFont(new java.awt.Font("Segoe UI", 0, 15)); // NOI18N
jLabel8.setText("jLabel8");
jLabel9.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jLabel9.setText("Prędkość wiatru:");
jLabel10.setFont(new java.awt.Font("Segoe UI", 1, 18)); // NOI18N
jLabel10.setText("jLabel10");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel5)
.addComponent(jLabel6))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel8, javax.swing.GroupLayout.DEFAULT_SIZE, 252, Short.MAX_VALUE)
.addComponent(jLabel7, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 74, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(33, 33, 33)
.addComponent(jTextField1))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 228, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 228, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jSpinner2, javax.swing.GroupLayout.PREFERRED_SIZE, 119, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, 119, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 114, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel9))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel_Temperatura, javax.swing.GroupLayout.DEFAULT_SIZE, 169, Short.MAX_VALUE)
.addComponent(jLabel10, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
.addGap(0, 0, Short.MAX_VALUE)))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(13, 13, 13)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel4)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel5)
.addComponent(jLabel7))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(jLabel8))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel1))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jSpinner2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2))
.addGap(18, 18, 18)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel_Temperatura, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel9)
.addComponent(jLabel10, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(53, Short.MAX_VALUE))
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
double lat = (Double)jSpinner1.getValue();
double lon = (Double)jSpinner2.getValue();
String adres = "https://api.open-meteo.com/v1/forecast?latitude=" + lat
+ "&longitude=" + lon
+ "&current_weather=true";
try {
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder(new URI(adres)).build();
HttpResponse<InputStream> response = client.send(request, HttpResponse.BodyHandlers.ofInputStream());
JsonReader reader = Json.createReader(response.body());
JsonObject json = reader.readObject();
System.out.println(json);
JsonObject weather = json.getJsonObject("current_weather");
double temperatura = weather.getJsonNumber("temperature").doubleValue();
double wiatr = weather.getJsonNumber("windspeed").doubleValue();
jLabel_Temperatura.setText(String.valueOf(temperatura));
jLabel10.setText(String.valueOf(wiatr));
} catch (URISyntaxException | IOException | InterruptedException e) {
e.printStackTrace();
}
}//GEN-LAST:event_jButton1ActionPerformed
private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField1ActionPerformed
// to się wykona po naciśnięciu enter w polu tekstowym
String miasto = jTextField1.getText().strip();
String adres = "https://geocoding-api.open-meteo.com/v1/search?name=" + miasto.replace(" ", "%20");
try {
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder(new URI(adres)).build();
HttpResponse<InputStream> response = client.send(request, HttpResponse.BodyHandlers.ofInputStream());
JsonReader reader = Json.createReader(response.body());
JsonObject json = reader.readObject();
System.out.println(json);
JsonArray listaWynikow = json.getJsonArray("results");
if(listaWynikow == null || listaWynikow.isEmpty()) {
jTextField1.setForeground(Color.RED);
} else {
JsonObject daneMiasta = listaWynikow.getJsonObject(0);
jTextField1.setForeground(Color.BLACK);
jTextField1.setText(daneMiasta.getString("name", miasto));
double lat = daneMiasta.getJsonNumber("latitude").doubleValue();
double lon = daneMiasta.getJsonNumber("longitude").doubleValue();
jSpinner1.setValue(lat);
jSpinner2.setValue(lon);
if(daneMiasta.containsKey("population")) {
jLabel7.setText(String.valueOf(daneMiasta.getJsonNumber("population")));
} else {
jLabel7.setText("");
}
if(daneMiasta.containsKey("elevation")) {
jLabel8.setText(String.valueOf(daneMiasta.getJsonNumber("elevation")));
} else {
jLabel8.setText("");
}
}
jButton1ActionPerformed(evt);
} catch (URISyntaxException | IOException | InterruptedException e) {
e.printStackTrace();
}
}//GEN-LAST:event_jTextField1ActionPerformed
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(WyswietlPogodeDlaMiasta.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(WyswietlPogodeDlaMiasta.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(WyswietlPogodeDlaMiasta.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(WyswietlPogodeDlaMiasta.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new WyswietlPogodeDlaMiasta().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel10;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
private javax.swing.JLabel jLabel_Temperatura;
private javax.swing.JSpinner jSpinner1;
private javax.swing.JSpinner jSpinner2;
private javax.swing.JTextField jTextField1;
// End of variables declaration//GEN-END:variables
}
PC28-RestKlient/src/main/java/pogoda/WyswietlPogodeDlaWspolrzednych.java 0 → 100644
/*
* Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
* Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
*/
package pogoda;
import jakarta.json.Json;
import jakarta.json.JsonObject;
import jakarta.json.JsonReader;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
/**
*
* @author kurs
*/
public class WyswietlPogodeDlaWspolrzednych extends javax.swing.JFrame {
/**
* Creates new form WyswietlPogodeDlaWspolrzednych
*/
public WyswietlPogodeDlaWspolrzednych() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() {
jSpinner1 = new javax.swing.JSpinner();
jSpinner2 = new javax.swing.JSpinner();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jLabel3 = new javax.swing.JLabel();
jLabel_Temperatura = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jSpinner1.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jSpinner1.setModel(new javax.swing.SpinnerNumberModel(52.0d, -90.0d, 90.0d, 1.0d));
jSpinner2.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jSpinner2.setModel(new javax.swing.SpinnerNumberModel(21.0d, -180.0d, 180.0d, 1.0d));
jLabel1.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jLabel1.setText("Szerokość geograficzna");
jLabel2.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jLabel2.setText("Długość geograficzna");
jButton1.setFont(new java.awt.Font("Segoe UI", 1, 24)); // NOI18N
jButton1.setText("Pobierz pogodę");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jLabel3.setFont(new java.awt.Font("Segoe UI", 0, 18)); // NOI18N
jLabel3.setText("Temperatura");
jLabel_Temperatura.setFont(new java.awt.Font("Segoe UI", 1, 18)); // NOI18N
jLabel_Temperatura.setText("jLabel4");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 228, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 228, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jSpinner2, javax.swing.GroupLayout.PREFERRED_SIZE, 119, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, 119, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 114, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel_Temperatura, javax.swing.GroupLayout.PREFERRED_SIZE, 169, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(18, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(41, 41, 41)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jSpinner1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel1))
.addGap(29, 29, 29)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jSpinner2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2))
.addGap(18, 18, 18)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 64, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel_Temperatura, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(61, Short.MAX_VALUE))
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
double lat = (Double)jSpinner1.getValue();
double lon = (Double)jSpinner2.getValue();
String adres = "https://api.open-meteo.com/v1/forecast?latitude=" + lat
+ "&longitude=" + lon
+ "&current_weather=true";
try {
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder(new URI(adres)).build();
HttpResponse<InputStream> response = client.send(request, HttpResponse.BodyHandlers.ofInputStream());
JsonReader reader = Json.createReader(response.body());
JsonObject json = reader.readObject();
JsonObject weather = json.getJsonObject("current_weather");
double temperatura = weather.getJsonNumber("temperature").doubleValue();
jLabel_Temperatura.setText(String.valueOf(temperatura));
} catch (URISyntaxException | IOException | InterruptedException e) {
e.printStackTrace();
}
}//GEN-LAST:event_jButton1ActionPerformed
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(WyswietlPogodeDlaWspolrzednych.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(WyswietlPogodeDlaWspolrzednych.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(WyswietlPogodeDlaWspolrzednych.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(WyswietlPogodeDlaWspolrzednych.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new WyswietlPogodeDlaWspolrzednych().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel_Temperatura;
private javax.swing.JSpinner jSpinner1;
private javax.swing.JSpinner jSpinner2;
// End of variables declaration//GEN-END:variables
}
PC28-RestKlient/src/main/java/rest_klient/Klient24_Interaktywna_Edycja.java
...@@ -48,9 +48,10 @@ public class Klient24_Interaktywna_Edycja { ...@@ -48,9 +48,10 @@ public class Klient24_Interaktywna_Edycja {
if (zmianaCeny.compareTo(BigDecimal.ZERO) != 0) { if (zmianaCeny.compareTo(BigDecimal.ZERO) != 0) {
BigDecimal newPrice = product.getPrice().add(zmianaCeny); BigDecimal newPrice = product.getPrice().add(zmianaCeny);
System.out.println("PUT nowej ceny..."); System.out.println("PUT nowej ceny...");
Response odpPut = path.path("price").resolveTemplate("id", id).request() try(Response odpPut = path.path("price").resolveTemplate("id", id).request()
.put(Entity.entity(newPrice, MediaType.TEXT_PLAIN_TYPE)); .put(Entity.entity(newPrice, MediaType.TEXT_PLAIN_TYPE))) {
System.out.println("PUT zakończył się kodem " + odpPut.getStatus()); System.out.println("PUT zakończył się kodem " + odpPut.getStatus());
}
} }
} else { } else {
System.out.println("nie mogę odczytać"); System.out.println("nie mogę odczytać");
......
PC28-RestKlient/src/main/java/waluty/BladAplikacji.java 0 → 100644
package waluty;
public class BladAplikacji extends Exception {
public BladAplikacji() {
super();
}
public BladAplikacji(String message, Throwable cause) {
super(message, cause);
}
public BladAplikacji(String message) {
super(message);
}
public BladAplikacji(Throwable cause) {
super(cause);
}
}
PC28-RestKlient/src/main/java/waluty/DrukujWaluty.java 0 → 100644
package waluty;
public class DrukujWaluty {
public static void main(String[] args) {
System.out.println("Startujemy...");
try {
Pobieranie pobieranie = Pobieranie.utworz("JSON");
TabelaWalut tabelaWalut = pobieranie.pobierzBiezaceKursy();
System.out.println(tabelaWalut);
for(Waluta waluta : tabelaWalut.getRates()) {
System.out.println(waluta);
}
} catch (BladAplikacji e) {
e.printStackTrace();
}
}
}
PC28-RestKlient/src/main/java/waluty/Pobieranie.java 0 → 100644
package waluty;
import java.time.LocalDate;
public abstract class Pobieranie {
protected static final String ADRES_BAZOWY = "https://api.nbp.pl/api/exchangerates/tables";
public abstract TabelaWalut pobierzBiezaceKursy() throws BladAplikacji;
public abstract TabelaWalut pobierzArchiwalneKursy(String data) throws BladAplikacji;
// Jeśli jakaś część implementacji jest wpólna dla wszystkich podklas,
// to można umieścić ja w klasie abstrakcyjnej
public TabelaWalut pobierzArchiwalneKursy(LocalDate data) throws BladAplikacji {
return pobierzArchiwalneKursy(data.toString());
}
// fabryka nowych obiektów
public static Pobieranie utworz(String format) {
return switch(format.toUpperCase()) {
case "XML" -> new PobieranieXML();
case "JSON" -> new PobieranieJSON();
default -> throw new IllegalArgumentException("Nieznany format " + format);
};
}
}
PC28-RestKlient/src/main/java/waluty/PobieranieJSON.java 0 → 100644
package waluty;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import java.time.LocalDate;
import jakarta.json.Json;
import jakarta.json.JsonArray;
import jakarta.json.JsonObject;
import jakarta.json.JsonReader;
import jakarta.json.JsonValue;
public class PobieranieJSON extends Pobieranie {
public TabelaWalut pobierzBiezaceKursy() throws BladAplikacji {
String adres = ADRES_BAZOWY + "/A?format=json";
return pobierzZAdresu(adres);
}
public TabelaWalut pobierzArchiwalneKursy(String data) throws BladAplikacji {
return pobierzZAdresu(ADRES_BAZOWY + "/A/" + data + "?format=json");
}
private TabelaWalut pobierzZAdresu(String adres) throws BladAplikacji {
try {
HttpClient httpClient = HttpClient.newHttpClient();
URI uri = new URI(adres);
HttpRequest request = HttpRequest.newBuilder(uri).build();
HttpResponse<InputStream> response = httpClient.send(request, BodyHandlers.ofInputStream());
if(response.statusCode() != 200) {
throw new BladAplikacji("Zapytanie HTTP zwróciło " + response.statusCode());
}
// dane odebrane z sieci "parsujemy" jako JSON
try(JsonReader reader = Json.createReader(response.body())) {
JsonArray array = reader.readArray();
JsonObject tabela = array.getJsonObject(0);
String no = tabela.getString("no");
LocalDate effectiveDate = LocalDate.parse(tabela.getString("effectiveDate"));
TabelaWalut tabelaWalut = new TabelaWalut(no, effectiveDate);
JsonArray rates = tabela.getJsonArray("rates");
for(JsonValue rate : rates) {
JsonObject rateObj = rate.asJsonObject();
Waluta waluta = new Waluta(rateObj.getString("code"),
rateObj.getString("currency"),
rateObj.getJsonNumber("mid").bigDecimalValue());
tabelaWalut.addRate(waluta);
}
return tabelaWalut;
}
} catch (URISyntaxException | IOException | InterruptedException e) {
throw new BladAplikacji(e);
}
}
}
PC28-RestKlient/src/main/java/waluty/PobieranieXML.java 0 → 100644
package waluty;
import java.io.InputStream;
import java.math.BigDecimal;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
public class PobieranieXML extends Pobieranie {
private HttpClient httpClient = HttpClient.newHttpClient();
private DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
private XPathFactory xpf = XPathFactory.newInstance();
@Override
public TabelaWalut pobierzBiezaceKursy() throws BladAplikacji {
return pobierzZAdresu(ADRES_BAZOWY + "/A" + "?format=xml");
}
@Override
public TabelaWalut pobierzArchiwalneKursy(String data) throws BladAplikacji {
return pobierzZAdresu(ADRES_BAZOWY + "/A/" + data + "?format=xml");
}
private TabelaWalut pobierzZAdresu(String adres) throws BladAplikacji {
try {
URI uri = new URI(adres);
HttpRequest request = HttpRequest.newBuilder(uri).build();
HttpResponse<InputStream> response = httpClient.send(request, BodyHandlers.ofInputStream());
if(response.statusCode() != 200) {
throw new BladAplikacji("Brak danych w odpowiedzi HTTP, kod " + response.statusCode());
}
DocumentBuilder builder = dbf.newDocumentBuilder();
Document document = builder.parse(response.body());
return tabelaZXML(document);
} catch(BladAplikacji e) {
throw e;
} catch(Exception e) {
throw new BladAplikacji("Błąd podczas pobierania XML: " + e.getMessage(), e);
}
}
private TabelaWalut tabelaZXML(Document document) throws XPathExpressionException {
XPath xpath = xpf.newXPath();
// String no = xpath.evaluate("/ArrayOfExchangeRatesTable/ExchangeRatesTable/No", document);
// String date = xpath.evaluate("/ArrayOfExchangeRatesTable/ExchangeRatesTable/EffectiveDate", document);
String no = xpath.evaluate("//No", document);
String date = xpath.evaluate("//EffectiveDate", document);
TabelaWalut tabela = new TabelaWalut(no, date);
NodeList rates = (NodeList) xpath.evaluate("//Rate", document, XPathConstants.NODESET);
final int length = rates.getLength();
for(int i = 0; i < length; i++) {
Node rate = rates.item(i);
String currency = xpath.evaluate("Currency", rate);
String code = xpath.evaluate("Code", rate);
BigDecimal mid = new BigDecimal(xpath.evaluate("Mid", rate));
Waluta waluta = new Waluta(code, currency, mid);
tabela.addRate(waluta);
}
return tabela;
}
}
PC28-RestKlient/src/main/java/waluty/ProstyPrzelicznik.java 0 → 100644
package waluty;
import java.math.BigDecimal;
import java.util.Locale;
import java.util.Optional;
import java.util.Scanner;
/* Napisz program, który pobiera aktualne kursy (dodatkowa opcja - możliwość podania daty i pobranie archowalnego)
*
* Następnie: użytkownik podaje kod waluty oraz kwotę, a program przelicza kwotę w tej walucie na złote
* (ew. przeliczanie w drugą stronę)
*/
public class ProstyPrzelicznik {
public static void main(String[] args) {
Pobieranie pobieranie = Pobieranie.utworz("JSON");
Scanner scanner = new Scanner(System.in);
scanner.useLocale(Locale.US);
System.out.println("Podaj datę lub naciśnij enter, aby pobrać najnowsze kursy:");
String data = scanner.nextLine();
try {
TabelaWalut tabela = data.isBlank() ? pobieranie.pobierzBiezaceKursy() : pobieranie.pobierzArchiwalneKursy(data);
System.out.println("Pobrano tabelę: " + tabela);
System.out.println("\nPodawaj kwoty do przeliczenia w postaci 1000 USD , a żeby zakończyć wpisz Q");
while(true) {
System.out.print("> ");
if(scanner.hasNextBigDecimal()) {
BigDecimal kwota = scanner.nextBigDecimal();
String kod = scanner.next().toUpperCase();
Optional<Waluta> found = tabela.findByCode(kod);
if(found.isPresent()) {
Waluta waluta = found.get();
BigDecimal wynik = waluta.przeliczNaZlote(kwota);
System.out.println(wynik + " PLN");
} else {
System.out.println("Nieznana waluta");
}
} else {
if(scanner.next().equalsIgnoreCase("Q"))
break;
}
}
} catch (BladAplikacji e) {
System.out.println("Nastąpił błąd: " + e);
e.printStackTrace(System.out);
}
System.out.println("Do widzenia");
}
}
PC28-RestKlient/src/main/java/waluty/PrzelicznikKonsolowy.java 0 → 100644
package waluty;
import java.math.BigDecimal;
import java.util.Locale;
import java.util.Optional;
import java.util.Scanner;
public class PrzelicznikKonsolowy {
private Scanner scanner;
private Pobieranie pobieranie;
public PrzelicznikKonsolowy() {
scanner = new Scanner(System.in);
scanner.useLocale(Locale.US);
}
public static void main(String[] args) {
new PrzelicznikKonsolowy().run();
}
public void run() {
System.out.println("Wybierz format danych: XML / JSON");
String format = scanner.nextLine().trim().toUpperCase();
switch(format) {
case "XML" -> pobieranie = new PobieranieXML();
case "", "JSON" -> pobieranie = new PobieranieJSON();
default -> {
System.out.println("Nieznany format, kończę program.");
return;
}
}
program: while(true) {
System.out.println("\nWpisz datę w formacie YYYY-MM-DD lub naciśnij ENTER, aby pobrać bieżące kursy.");
System.out.println("Możesz też wpisać Q , aby zakończyć program");
String data = scanner.nextLine();
try {
TabelaWalut tabela;
switch(data) {
case "q", "Q" -> {break program;}
case "" -> tabela = pobieranie.pobierzBiezaceKursy();
default -> tabela = pobieranie.pobierzArchiwalneKursy(data);
}
dzialajDlaWybranejTabeli(tabela);
} catch(BladAplikacji e) {
System.out.println("Wyjątek! " + e.getMessage());
}
}
System.out.println("Koniec programu");
}
private void dzialajDlaWybranejTabeli(TabelaWalut tabela) {
System.out.println(tabela);
while(true) {
System.out.println("\nPodaj kod waluty, lub Q aby zakończyć pracę z bieżącą tabelą");
String code = scanner.nextLine().toUpperCase();
if("Q".equals(code)) {
break;
}
Optional<Waluta> found = tabela.findByCode(code);
if(found.isEmpty()) {
System.out.println("Nie ma waluty o kodzie " + code);
continue;
}
dzialajDlaWybranejWaluty(found.get());
}
}
private void dzialajDlaWybranejWaluty(Waluta waluta) {
System.out.println("Wybrana waluta: " + waluta.getCode() + " (" + waluta.getCurrency() + ")" + ", kurs " + waluta.getMid());
while(true) {
System.out.println("\nPodaj kwotę do przeliczenia. 0 oznacza koniec:");
BigDecimal kwota = scanner.nextBigDecimal();
scanner.nextLine();
if(kwota.compareTo(BigDecimal.ZERO) == 0) {
break;
}
BigDecimal wynikWaluta = waluta.przeliczNaWalute(kwota);
BigDecimal wynikPLN = waluta.przeliczNaZlote(kwota);
System.out.println(kwota + " " + waluta.getCode() + " = " + wynikPLN + " PLN");
System.out.println(kwota + " PLN = " + wynikWaluta + " " + waluta.getCode());
}
}
}
PC28-RestKlient/src/main/java/waluty/PrzelicznikWalutOkno.java 0 → 100644
package waluty;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.math.BigDecimal;
import java.time.LocalDate;
import java.util.Optional;
import javax.swing.ButtonGroup;
import javax.swing.DefaultComboBoxModel;
import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.LayoutStyle.ComponentPlacement;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.SwingWorker;
public class PrzelicznikWalutOkno {
private static final Font FONT_LABEL = new Font("Times New Roman", Font.PLAIN, 24);
private static final Font FONT_WARTOSC = new Font("Dialog", Font.BOLD, 24);
private static final Font FONT_TXT = new Font("Dialog", Font.BOLD, 32);
private static final Font FONT_WYNIK = new Font("Dialog", Font.BOLD, 32);
private static final Font FONT_BUTTON = new Font("Dialog", Font.BOLD, 28);
private TabelaWalut tabela = null;
private JFrame frmPrzelicznikWalut;
private JTextField txtKwota;
private JComboBox<String> comboBox_Waluta;
private JLabel lbl_KodWaluty;
private JLabel lbl_NazwaWaluty;
private JLabel lbl_KursWaluty;
private JRadioButton rdbtnWalutaNaZlote;
private JRadioButton rdbtnZloteNaWalute;
private JButton btnPrzelicz;
private JLabel lblPrawdziwyWynik;
private final ButtonGroup buttonGroup = new ButtonGroup();
private JPanel panel_1;
private JLabel lblTabela;
private JLabel lbl_NumerTabeli;
private JLabel lblData;
private JLabel lbl_DataTabeli;
private JTextField txtData;
private JButton btnPobierzAktualne;
private Pobieranie pobieranie = Pobieranie.utworz("xml");
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
// com.formdev.flatlaf.FlatDarkLaf.setup();
PrzelicznikWalutOkno window = new PrzelicznikWalutOkno();
window.txtData.setText(LocalDate.now().toString());
window.frmPrzelicznikWalut.setVisible(true);
window.pobierzAktualneKursy();
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public PrzelicznikWalutOkno() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frmPrzelicznikWalut = new JFrame();
frmPrzelicznikWalut.setTitle("Przelicznik Walut");
frmPrzelicznikWalut.setBounds(100, 100, 480, 701);
frmPrzelicznikWalut.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel lblWybierzWalut = new JLabel("Wybierz walutę");
lblWybierzWalut.setFont(FONT_LABEL);
comboBox_Waluta = new JComboBox<>();
comboBox_Waluta.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
wyswietlDaneWaluty();
}
});
comboBox_Waluta.setModel(
new DefaultComboBoxModel<>(new String[] {"--"}));
comboBox_Waluta.setFont(FONT_WARTOSC);
JPanel panel = new JPanel();
txtKwota = new JTextField();
txtKwota.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
przelicz();
}
});
txtKwota.setText("100");
txtKwota.setColumns(10);
txtKwota.setFont(FONT_TXT);
JLabel lblPodajKwot = new JLabel("Podaj kwotę");
lblPodajKwot.setFont(FONT_LABEL);
rdbtnWalutaNaZlote = new JRadioButton("waluta na złote");
rdbtnWalutaNaZlote.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
przelicz();
}
});
rdbtnWalutaNaZlote.setFont(FONT_LABEL);
buttonGroup.add(rdbtnWalutaNaZlote);
rdbtnZloteNaWalute = new JRadioButton("złote na walute");
rdbtnZloteNaWalute.setFont(FONT_LABEL);
rdbtnZloteNaWalute.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
przelicz();
}
});
buttonGroup.add(rdbtnZloteNaWalute);
btnPrzelicz = new JButton("Przelicz");
btnPrzelicz.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ev) {
przelicz();
}
});
btnPrzelicz.setFont(FONT_BUTTON);
JLabel lblWynik = new JLabel("Wynik");
lblWynik.setFont(FONT_LABEL);
lblPrawdziwyWynik = new JLabel("0.00");
lblPrawdziwyWynik.setFont(FONT_WYNIK);
lblPrawdziwyWynik.setForeground(Color.GRAY);
panel_1 = new JPanel();
JLabel lblPodajDat = new JLabel("Podaj datę");
lblPodajDat.setFont(FONT_LABEL);
txtData = new JTextField();
txtData.setHorizontalAlignment(SwingConstants.CENTER);
txtData.setFont(new Font("Dialog", Font.PLAIN, 20));
txtData.setText("data");
txtData.setColumns(10);
JButton btnZmieDat = new JButton("Zmień datę");
btnZmieDat.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
pobierzKursyDlaDaty();
}
});
btnZmieDat.setFont(new Font("Dialog", Font.BOLD, 18));
btnPobierzAktualne = new JButton("Pobierz aktualne");
btnPobierzAktualne.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
pobierzAktualneKursy();
}
});
btnPobierzAktualne.setFont(new Font("Dialog", Font.BOLD, 18));
GroupLayout groupLayout = new GroupLayout(frmPrzelicznikWalut.getContentPane());
groupLayout.setHorizontalGroup(
groupLayout.createParallelGroup(Alignment.LEADING)
.addGroup(groupLayout.createSequentialGroup()
.addContainerGap()
.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING)
.addComponent(panel_1, Alignment.LEADING, GroupLayout.DEFAULT_SIZE, 448, Short.MAX_VALUE)
.addComponent(btnPrzelicz, Alignment.LEADING, GroupLayout.DEFAULT_SIZE, 448, Short.MAX_VALUE)
.addGroup(Alignment.LEADING, groupLayout.createSequentialGroup()
.addComponent(rdbtnWalutaNaZlote)
.addPreferredGap(ComponentPlacement.RELATED, 108, Short.MAX_VALUE)
.addComponent(rdbtnZloteNaWalute))
.addGroup(Alignment.LEADING, groupLayout.createSequentialGroup()
.addComponent(lblPodajKwot)
.addPreferredGap(ComponentPlacement.RELATED, 139, Short.MAX_VALUE)
.addComponent(txtKwota, GroupLayout.PREFERRED_SIZE, 189, GroupLayout.PREFERRED_SIZE))
.addComponent(panel, Alignment.LEADING, GroupLayout.DEFAULT_SIZE, 448, Short.MAX_VALUE)
.addComponent(lblWynik, Alignment.LEADING)
.addComponent(lblPrawdziwyWynik, Alignment.LEADING)
.addGroup(Alignment.LEADING, groupLayout.createSequentialGroup()
.addGroup(groupLayout.createParallelGroup(Alignment.TRAILING, false)
.addComponent(lblPodajDat, Alignment.LEADING, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(lblWybierzWalut, Alignment.LEADING, GroupLayout.DEFAULT_SIZE, 223, Short.MAX_VALUE))
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(txtData, GroupLayout.DEFAULT_SIZE, 207, Short.MAX_VALUE)
.addComponent(comboBox_Waluta, 0, 207, Short.MAX_VALUE)))
.addGroup(groupLayout.createSequentialGroup()
.addComponent(btnPobierzAktualne, GroupLayout.PREFERRED_SIZE, 207, GroupLayout.PREFERRED_SIZE)
.addGap(34)
.addComponent(btnZmieDat, GroupLayout.DEFAULT_SIZE, 207, Short.MAX_VALUE)))
.addContainerGap())
);
groupLayout.setVerticalGroup(
groupLayout.createParallelGroup(Alignment.TRAILING)
.addGroup(groupLayout.createSequentialGroup()
.addContainerGap()
.addComponent(panel_1, GroupLayout.PREFERRED_SIZE, 103, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING, false)
.addComponent(txtData, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addComponent(lblPodajDat, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(ComponentPlacement.RELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
.addComponent(btnZmieDat)
.addComponent(btnPobierzAktualne, GroupLayout.PREFERRED_SIZE, 32, GroupLayout.PREFERRED_SIZE))
.addPreferredGap(ComponentPlacement.RELATED, 17, Short.MAX_VALUE)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(comboBox_Waluta, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addComponent(lblWybierzWalut))
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(panel, GroupLayout.PREFERRED_SIZE, 142, GroupLayout.PREFERRED_SIZE)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(txtKwota, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addComponent(lblPodajKwot))
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
.addComponent(rdbtnWalutaNaZlote)
.addComponent(rdbtnZloteNaWalute))
.addPreferredGap(ComponentPlacement.RELATED)
.addComponent(btnPrzelicz)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(lblWynik)
.addPreferredGap(ComponentPlacement.UNRELATED)
.addComponent(lblPrawdziwyWynik)
.addGap(33))
);
lblTabela = new JLabel("Tabela");
lblTabela.setFont(FONT_LABEL);
lbl_NumerTabeli = new JLabel("?");
lbl_NumerTabeli.setFont(new Font("Dialog", Font.BOLD, 24));
lblData = new JLabel("Data:");
lblData.setFont(FONT_LABEL);
lbl_DataTabeli = new JLabel("?");
lbl_DataTabeli.setFont(new Font("Dialog", Font.BOLD, 24));
GroupLayout gl_panel_1 = new GroupLayout(panel_1);
gl_panel_1.setHorizontalGroup(
gl_panel_1.createParallelGroup(Alignment.LEADING)
.addGroup(gl_panel_1.createSequentialGroup()
.addContainerGap()
.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
.addGroup(gl_panel_1.createSequentialGroup()
.addComponent(lblTabela, GroupLayout.PREFERRED_SIZE, 95, GroupLayout.PREFERRED_SIZE)
.addGap(18)
.addComponent(lbl_NumerTabeli, GroupLayout.PREFERRED_SIZE, 311, GroupLayout.PREFERRED_SIZE))
.addGroup(gl_panel_1.createSequentialGroup()
.addComponent(lblData, GroupLayout.PREFERRED_SIZE, 95, GroupLayout.PREFERRED_SIZE)
.addGap(18)
.addComponent(lbl_DataTabeli, GroupLayout.PREFERRED_SIZE, 311, GroupLayout.PREFERRED_SIZE)))
.addContainerGap(GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
gl_panel_1.setVerticalGroup(
gl_panel_1.createParallelGroup(Alignment.LEADING)
.addGroup(gl_panel_1.createSequentialGroup()
.addContainerGap()
.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
.addComponent(lblTabela, GroupLayout.PREFERRED_SIZE, 29, GroupLayout.PREFERRED_SIZE)
.addComponent(lbl_NumerTabeli, GroupLayout.PREFERRED_SIZE, 29, GroupLayout.PREFERRED_SIZE))
.addGap(12)
.addGroup(gl_panel_1.createParallelGroup(Alignment.LEADING)
.addComponent(lblData, GroupLayout.PREFERRED_SIZE, 29, GroupLayout.PREFERRED_SIZE)
.addComponent(lbl_DataTabeli, GroupLayout.PREFERRED_SIZE, 29, GroupLayout.PREFERRED_SIZE))
.addContainerGap(21, Short.MAX_VALUE))
);
panel_1.setLayout(gl_panel_1);
JLabel lblKod = new JLabel("Kod:");
lblKod.setFont(FONT_LABEL);
JLabel lblNazwa = new JLabel("Nazwa:");
lblNazwa.setFont(FONT_LABEL);
JLabel lblKurs = new JLabel("Kurs:");
lblKurs.setFont(FONT_LABEL);
lbl_KodWaluty = new JLabel("kod");
lbl_KodWaluty.setFont(FONT_WARTOSC);
lbl_NazwaWaluty = new JLabel("nazwa");
lbl_NazwaWaluty.setFont(FONT_WARTOSC);
lbl_KursWaluty = new JLabel("1.0000");
lbl_KursWaluty.setFont(FONT_WARTOSC);
GroupLayout gl_panel = new GroupLayout(panel);
gl_panel.setHorizontalGroup(
gl_panel.createParallelGroup(Alignment.LEADING)
.addGroup(gl_panel.createSequentialGroup()
.addContainerGap()
.addGroup(gl_panel.createParallelGroup(Alignment.LEADING, false)
.addComponent(lblKurs, Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(lblNazwa, Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(lblKod, Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, 95, Short.MAX_VALUE))
.addPreferredGap(ComponentPlacement.RELATED, 18, GroupLayout.PREFERRED_SIZE)
.addGroup(gl_panel.createParallelGroup(Alignment.LEADING)
.addComponent(lbl_KodWaluty, Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, 171, Short.MAX_VALUE)
.addComponent(lbl_NazwaWaluty, Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, 171, Short.MAX_VALUE)
.addComponent(lbl_KursWaluty, Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, 171, Short.MAX_VALUE))
.addContainerGap())
);
gl_panel.setVerticalGroup(
gl_panel.createParallelGroup(Alignment.LEADING)
.addGroup(gl_panel.createSequentialGroup()
.addContainerGap()
.addGroup(gl_panel.createParallelGroup(Alignment.BASELINE)
.addComponent(lblKod)
.addComponent(lbl_KodWaluty))
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(gl_panel.createParallelGroup(Alignment.BASELINE)
.addComponent(lblNazwa)
.addComponent(lbl_NazwaWaluty))
.addPreferredGap(ComponentPlacement.UNRELATED)
.addGroup(gl_panel.createParallelGroup(Alignment.BASELINE)
.addComponent(lblKurs)
.addComponent(lbl_KursWaluty))
.addContainerGap(61, Short.MAX_VALUE))
);
panel.setLayout(gl_panel);
frmPrzelicznikWalut.getContentPane().setLayout(groupLayout);
}
protected void przelicz() {
try {
BigDecimal kwota = new BigDecimal(txtKwota.getText());
String kod = "" + comboBox_Waluta.getSelectedItem();
Waluta waluta = tabela.findByCode(kod).get();
BigDecimal wynik = null;
if(rdbtnWalutaNaZlote.isSelected()) {
wynik = waluta.przeliczNaZlote(kwota);
}
if(rdbtnZloteNaWalute.isSelected()) {
wynik = waluta.przeliczNaWalute(kwota);
}
lblPrawdziwyWynik.setText("" + wynik);
lblPrawdziwyWynik.setForeground(Color.BLUE);
} catch (Exception e) {
lblPrawdziwyWynik.setText("błąd");
lblPrawdziwyWynik.setForeground(Color.RED);
}
}
protected void wyswietlDaneWaluty() {
String kod = "" + comboBox_Waluta.getSelectedItem();
Optional<Waluta> waluta = tabela.findByCode(kod);
if(waluta.isPresent()) {
lbl_KodWaluty.setText(waluta.get().getCode());
lbl_NazwaWaluty.setText(waluta.get().getCurrency());
lbl_KursWaluty.setText("" + waluta.get().getMid());
if(! txtKwota.getText().isEmpty()) {
przelicz();
}
return;
}
lblPrawdziwyWynik.setText("0.00");
lblPrawdziwyWynik.setForeground(Color.GRAY);
}
private void pobierzAktualneKursy() {
// Pobieranie aktualnych kursów w tle (to znaczy w innym wątku)
// Aby wykonać operację w tle, w Swingu najlepiej użyć klasy SwingWorker
SwingWorker<TabelaWalut, Void> worker = new SwingWorker<>() {
protected TabelaWalut doInBackground() {
try {
tabela = pobieranie.pobierzBiezaceKursy();
} catch(BladAplikacji e) {
tabela = new TabelaWalut("Brak danych", LocalDate.now());
e.printStackTrace();
}
return tabela;
}
protected void done() {
// tu piszemy "co ma zrobić okno, gdy operacja jest zakończona"
// to będzie wykonane przez wątek EDT
odswiezDaneTabeli();
wyswietlDaneWaluty();
}
};
worker.execute();
}
private void pobierzKursyDlaDaty() {
SwingWorker<TabelaWalut, Void> worker = new SwingWorker<>() {
protected TabelaWalut doInBackground() {
String data = txtData.getText();
try {
tabela = pobieranie.pobierzArchiwalneKursy(data);
SwingUtilities.invokeLater(() -> {
txtData.setForeground(Color.BLACK);
});
} catch(BladAplikacji e) {
tabela = new TabelaWalut("Brak danych", LocalDate.now());
e.printStackTrace();
}
return tabela;
}
protected void done() {
odswiezDaneTabeli();
wyswietlDaneWaluty();
}
};
worker.execute();
}
private void odswiezDaneTabeli() {
lbl_NumerTabeli.setText(tabela.getNo());
lbl_DataTabeli.setText("" + tabela.getEffectiveDate());
Object wybranaWaluta = comboBox_Waluta.getSelectedItem();
comboBox_Waluta.setModel(new DefaultComboBoxModel<>(tabela.codes()));
comboBox_Waluta.setSelectedItem(wybranaWaluta);
}
}
PC28-RestKlient/src/main/java/waluty/TabelaWalut.java 0 → 100644
package waluty;
import java.time.LocalDate;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
public class TabelaWalut {
private final String no;
private final LocalDate effectiveDate;
private final List<Waluta> rates = new ArrayList<>();
public TabelaWalut(String no, LocalDate effectiveDate) {
this.no = no;
this.effectiveDate = effectiveDate;
}
public TabelaWalut(String no, String effectiveDate) {
this(no, LocalDate.parse(effectiveDate));
}
public void addRate(Waluta waluta) {
rates.add(waluta);
}
public String getNo() {
return no;
}
public LocalDate getEffectiveDate() {
return effectiveDate;
}
public List<Waluta> getRates() {
// dostęp tylko do odczytu
return Collections.unmodifiableList(rates);
}
@Override
public String toString() {
return "Tabela nr " + no + " z dnia " + effectiveDate + ", " + rates.size() + " walut";
}
public Optional<Waluta> findByCode(String code) {
for(Waluta waluta : rates) {
if(waluta.getCode().equals(code) ) {
return Optional.of(waluta);
}
}
return Optional.empty();
}
public String[] codes() {
return rates.stream()
.map(Waluta::getCode)
.toArray(String[]::new);
}
}
PC28-RestKlient/src/main/java/waluty/Waluta.java 0 → 100644
package waluty;
import java.math.BigDecimal;
import java.math.RoundingMode;
public class Waluta {
private final String code;
private final String currency;
private final BigDecimal mid;
public Waluta(String code, String currency, BigDecimal mid) {
this.code = code;
this.currency = currency;
this.mid = mid;
}
public String getCode() {
return code;
}
public String getCurrency() {
return currency;
}
public BigDecimal getMid() {
return mid;
}
@Override
public String toString() {
return code + " (" + currency + "): " + mid;
}
public BigDecimal przeliczNaZlote(BigDecimal kwota) {
return kwota.multiply(mid).setScale(2, RoundingMode.HALF_EVEN);
}
public BigDecimal przeliczNaWalute(BigDecimal kwota) {
return kwota.divide(mid, 2, RoundingMode.HALF_EVEN);
}
}
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