Klient obiektowy

PC27-RestKlient/.gitignore

@@ -32,3 +32,6 @@ build/
 ### Mac OS ###
 .DS_Store
 /wynik03.json
+/wynik11.json
+/product0001.pdf
+/wynik13.txt

PC27-RestKlient/pom.xml

@@ -10,6 +10,7 @@
         <maven.compiler.source>21</maven.compiler.source>
         <maven.compiler.target>21</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <resteasy.version>6.2.12.Final</resteasy.version>
     </properties>
     
     <dependencies>
@@ -31,7 +32,17 @@
         <dependency>
             <groupId>org.jboss.resteasy</groupId>
             <artifactId>resteasy-client</artifactId>
-            <version>6.2.12.Final</version>
+            <version>${resteasy.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jboss.resteasy</groupId>
+            <artifactId>resteasy-jackson2-provider</artifactId>
+            <version>${resteasy.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jboss.resteasy</groupId>
+            <artifactId>resteasy-jaxb-provider</artifactId>
+            <version>${resteasy.version}</version>
         </dependency>
     </dependencies>
 </project>

PC27-RestKlient/src/main/java/sklep/klient/Klient12_RestClient_String.java

@@ -8,7 +8,7 @@ public class Klient12_RestClient_String {
 
     public static void main(String[] args) {
         try(Client client = ClientBuilder.newClient()) {
-            // Taki styl programowania to "fluent API". Przy okazji - zarówno Client, jak i Response są "zamykalne.
+            // Taki styl programowania to "fluent API". Przy okazji - zarówno Client, jak i Response są "zamykalne".
             try(Response response = client.target(Ustawienia.ADRES_USLUGI)
                     .path("products.json")
                     .request()

PC27-RestKlient/src/main/java/sklep/klient/Klient14_RestClient_PDF.java

@@ -24,7 +24,8 @@ public class Klient14_RestClient_PDF {
             WebTarget root = client.target(Ustawienia.ADRES_USLUGI);
 
             try(Response response = root
-                    .path("products")
+                    .path("products.pdf")
+                    //.path("products")
                     .path("{id}")
                     .resolveTemplate("id", productId)
                     .request()

PC27-RestKlient/src/main/java/sklep/klient/Klient21_RestClient_JAXB.java

+package sklep.klient;
+
+import jakarta.ws.rs.client.Client;
+import jakarta.ws.rs.client.ClientBuilder;
+import jakarta.ws.rs.core.Response;
+import sklep.model.Product;
+import sklep.model.ProductList;
+
+public class Klient21_RestClient_JAXB {
+
+    public static void main(String[] args) {
+        try (Client client = ClientBuilder.newClient();
+             Response response = client.target(Ustawienia.ADRES_USLUGI)
+                     .path("products.xml")
+                     .request()
+                     .buildGet()
+                     .invoke()) {
+
+            System.out.println("Mam odpowiedź: " + response);
+            System.out.println("Status: " + response.getStatus());
+            System.out.println("C-Type: " + response.getMediaType());
+            System.out.println("Length: " + response.getLength());
+
+            ProductList products = response.readEntity(ProductList.class);
+
+            System.out.println("Otrzymane dane:");
+            for (Product product : products.getProducts()) {
+                System.out.println(product);
+            }
+        }
+    }
+
+}

PC27-RestKlient/src/main/java/sklep/klient/Klient22_RestClient_JSON.java

+package sklep.klient;
+
+import java.util.List;
+
+import jakarta.ws.rs.client.Client;
+import jakarta.ws.rs.client.ClientBuilder;
+import jakarta.ws.rs.core.GenericType;
+import jakarta.ws.rs.core.Response;
+import sklep.model.Product;
+
+public class Klient22_RestClient_JSON {
+
+    public static void main(String[] args) {
+        try(Client client = ClientBuilder.newClient();
+            Response response = client.target(Ustawienia.ADRES_USLUGI)
+                .path("products.json")
+                .request()
+                .buildGet()
+                .invoke()) {
+
+            System.out.println("Mam odpowiedź: " + response);
+            System.out.println("Status: " + response.getStatus());
+            System.out.println("C-Type: " + response.getMediaType());
+            System.out.println("Length: " + response.getLength());
+
+            // Ponieważ wersja JSON na serwerze zwraca wynik typu List<Product>, to tutaj musimy podać "typ generyczny",
+            // a nie wystarczy zwykła klasa.
+            // Nie zadziała:
+            // List<Product> products = response.readEntity(List.class);
+
+            GenericType<List<Product>> typListy = new GenericType<>() {
+            };
+            List<Product> products = response.readEntity(typListy);
+            // albo jednolinijkowo:
+            // List<Product> products = response.readEntity(new GenericType<List<Product>>() {});
+            for (Product product : products) {
+                System.out.println(product);
+            }
+        }
+    }
+
+}

PC27-RestKlient/src/main/java/sklep/klient/Klient23_RestClient_JSON_JedenProdukt.java

+package sklep.klient;
+
+import jakarta.ws.rs.client.Client;
+import jakarta.ws.rs.client.ClientBuilder;
+import jakarta.ws.rs.client.WebTarget;
+import jakarta.ws.rs.core.MediaType;
+import jakarta.ws.rs.core.Response;
+import sklep.model.Product;
+
+import java.util.Scanner;
+
+public class Klient23_RestClient_JSON_JedenProdukt {
+
+    public static void main(String[] args) {
+        try(Client client = ClientBuilder.newClient();
+                Scanner scanner = new Scanner(System.in)) {
+            final WebTarget path = client.target(Ustawienia.ADRES_USLUGI)
+                    .path("products")
+                    .path("{id}");
+
+            while (true) {
+                System.out.print("Podaj id produktu (-1 kończy): ");
+                int id = Integer.parseInt(scanner.nextLine());
+                if (id == -1) {
+                    break;
+                }
+
+                try (Response response = path
+                        .resolveTemplate("id", id)
+                        .request()
+                        .accept(MediaType.APPLICATION_JSON)
+                        .buildGet()
+                        .invoke()) {
+
+                    System.out.println("Mam odpowiedź: " + response);
+                    System.out.println("Status: " + response.getStatus());
+                    System.out.println("C-Type: " + response.getMediaType());
+                    System.out.println("Length: " + response.getLength());
+
+                    Product product = response.readEntity(Product.class);
+                    System.out.println("Odczytany produkt: " + product);
+                }
+            }
+        }
+    }
+
+}

PC27-RestKlient/src/main/java/sklep/klient/Klient24_Interaktywna_Edycja.java

+package sklep.klient;
+
+import java.math.BigDecimal;
+import java.util.Scanner;
+
+import jakarta.ws.rs.client.Client;
+import jakarta.ws.rs.client.ClientBuilder;
+import jakarta.ws.rs.client.Entity;
+import jakarta.ws.rs.client.WebTarget;
+import jakarta.ws.rs.core.MediaType;
+import jakarta.ws.rs.core.Response;
+import sklep.model.Product;
+
+public class Klient24_Interaktywna_Edycja {
+
+    public static void main(String[] args) {
+        System.out.println("Startujemy...");
+        try (Scanner scanner = new Scanner(System.in);
+             Client client = ClientBuilder.newClient()) {
+
+            WebTarget path = client.target(Ustawienia.ADRES_USLUGI)
+                    .path("products")
+                    .path("{id}");
+
+            System.out.println("Przygotowana ścieżka: " + path);
+
+            while (true) {
+                System.out.print("\nPodaj id: ");
+                int id = scanner.nextInt();
+                if (id == 0) break;
+
+                try(Response response = path
+                        .resolveTemplate("id", id)
+                        .request(MediaType.APPLICATION_JSON)
+                        .get()) {
+
+                    System.out.println("Status: " + response.getStatus());
+                    System.out.println("Content-Type: " + response.getMediaType());
+                    if (response.getStatus() == 200) {
+                        Product product = response.readEntity(Product.class);
+                        System.out.println("Mam produkt:");
+                        System.out.println("  Nazwa: " + product.getProductName());
+                        System.out.println("  Cena: " + product.getPrice());
+                        System.out.println("  Opis: " + product.getDescription());
+                        System.out.println();
+                        System.out.println("Podaj zmianę ceny (0 aby nie zmieniać):");
+                        BigDecimal zmianaCeny = scanner.nextBigDecimal();
+                        if (zmianaCeny.compareTo(BigDecimal.ZERO) != 0) {
+                            BigDecimal newPrice = product.getPrice().add(zmianaCeny);
+                            System.out.println("PUT nowej ceny...");
+                            try(Response odpPut = path.path("price").resolveTemplate("id", id).request()
+                                    .put(Entity.entity(newPrice, MediaType.TEXT_PLAIN_TYPE))) {
+                                System.out.println("PUT zakończył się kodem " + odpPut.getStatus());
+                            }
+                        }
+                    } else {
+                        System.out.println("nie mogę odczytać");
+                    }
+                }
+            }
+        }
+    }
+
+}

PC27-RestKlient/src/main/java/sklep/klient/pobierz_produkty.py

+import requests
+
+dane = requests.get("http://localhost:8080/PC27-RestSerwer/api/products.json").json()
+
+print("Liczba elementów", len(dane))
+
+for produkt in dane:
+    print(f'Produckt o nazwie {produkt["productName"]} ma cenę {produkt["price"]}')