Klienty HTTP zawarte w Java SE

PC34-RestKlient/.gitignore

@@ -6,3 +6,5 @@
 
 /*.iml
 /.idea/
+
+/wynik*

PC34-RestKlient/src/main/java/sklep/klient_rest/P01_Url.java

+package sklep.klient_rest;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+
+public class P01_Url {
+
+	public static void main(String[] args) {
+		try {
+			URL url = new URL("http://localhost:8080/PC33-RestSerwer/products.json");
+			try(InputStream inputStream = url.openStream()) {
+				Files.copy(inputStream, Paths.get("wynik01.json"), StandardCopyOption.REPLACE_EXISTING);
+				System.out.println("OK");
+			}
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+	}
+
+}

PC34-RestKlient/src/main/java/sklep/klient_rest/P03_HttpClient.java

+package sklep.klient_rest;
+
+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 P03_HttpClient {
+
+	public static void main(String[] args) {
+		HttpClient httpClient = HttpClient.newHttpClient();
+		try {
+			URI uri = new URI("http://localhost:8080/PC33-RestSerwer/products.json");
+			HttpRequest request = HttpRequest.newBuilder(uri).build();
+			HttpResponse<String> response = httpClient.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("BRAK"));
+			
+			String body = response.body();
+			System.out.println("Rozmiar treści: " + body.length());
+			System.out.println("\nCała treść:\n");
+			System.out.println(body);
+		} catch (URISyntaxException | IOException | InterruptedException e) {
+			e.printStackTrace();
+		}
+
+	}
+
+}