inital REST implementation based on JAX-RS 2.1

VerteilteSysteme-Examples/.classpath

@@ -2,5 +2,19 @@
 <classpath>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
 	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="lib" path="lib/grizzly-http-all-2.4.2.jar"/>
+	<classpathentry kind="lib" path="lib/hk2-api-2.5.0-b42.jar"/>
+	<classpathentry kind="lib" path="lib/hk2-locator-2.5.0-b42.jar"/>
+	<classpathentry kind="lib" path="lib/hk2-utils-2.5.0-b42.jar"/>
+	<classpathentry kind="lib" path="lib/javax.annotation-api-1.2.jar"/>
+	<classpathentry kind="lib" path="lib/javax.inject-2.5.0-b42.jar"/>
+	<classpathentry kind="lib" path="lib/javax.json.bind-api-1.0.jar"/>
+	<classpathentry kind="lib" path="lib/javax.ws.rs-api-2.1.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-client.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-common.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-container-grizzly2-http-2.26.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-hk2.jar"/>
+	<classpathentry kind="lib" path="lib/jersey-server.jar"/>
+	<classpathentry kind="lib" path="lib/validation-api-1.1.0.Final.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

VerteilteSysteme-Examples/src/verteiltesysteme/rest/RESTClient.java

@@ -0,0 +1,64 @@
+/* Beispiel angelehnt an http://www.torsten-horn.de/techdocs/jee-rest.htm */
+package verteiltesysteme.rest;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+import javax.ws.rs.client.*;
+import javax.ws.rs.core.MediaType;
+
+public class RESTClient {
+	public static void main(String[] args) {
+		String baseUrl = (args.length > 1) ? args[1] : "http://localhost:4434";
+		String webContextPathUpper = "/touppercase";
+		String webContextPathLower = "/tolowercase";
+
+		BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
+		String input = null;
+		try {
+			System.out.println("Bitte geben Sie eine Zeichenkette ein: ");
+			input = inFromUser.readLine();
+		} catch (IOException e) {
+			e.printStackTrace();
+		}
+		
+		// Nutzung des RESTful Web Service für toUpperCase()
+		System.out.println("****************************");
+		System.out.println("* toUpperCase              *");
+		System.out.println("****************************");
+
+		System.out.println("\nAngefragte URL: " + baseUrl + webContextPathUpper + "?input=" + input);
+
+		Client c = ClientBuilder.newClient();
+		WebTarget target = c.target(baseUrl);
+
+		System.out.println("\nTextausgabe:");
+		System.out.println(
+				target.path(webContextPathUpper).queryParam("input", input).request(MediaType.TEXT_PLAIN).get(String.class));
+		System.out.println("\nJSON-Ausgabe:");
+		System.out.println(target.path(webContextPathUpper).queryParam("input", input).request(MediaType.APPLICATION_JSON)
+				.get(String.class));
+		System.out.println("\nHTML-Ausgabe:");
+		System.out.println(
+				target.path(webContextPathUpper).queryParam("input", input).request(MediaType.TEXT_HTML).get(String.class));
+
+		// Nutzung des RESTful Web Service für toLowerCase()
+		System.out.println("\n****************************");
+		System.out.println("* toLowerCase              *");
+		System.out.println("****************************");
+
+		System.out.println("\nAngefragte URL: " + baseUrl + webContextPathLower + "?input=" + input);
+
+		System.out.println("\nTextausgabe:");
+		System.out.println(
+				target.path(webContextPathLower).queryParam("input", input).request(MediaType.TEXT_PLAIN).get(String.class));
+		System.out.println("\nJSON-Ausgabe:");
+		System.out.println(target.path(webContextPathLower).queryParam("input", input).request(MediaType.APPLICATION_JSON)
+				.get(String.class));
+		System.out.println("\nHTML-Ausgabe:");
+		System.out.println(
+				target.path(webContextPathLower).queryParam("input", input).request(MediaType.TEXT_HTML).get(String.class));
+	
+	}
+}

VerteilteSysteme-Examples/src/verteiltesysteme/rest/RESTServer.java

@@ -0,0 +1,33 @@
+/* Beispiel angelehnt an http://www.torsten-horn.de/techdocs/jee-rest.htm */
+package verteiltesysteme.rest;
+
+import java.io.IOException;
+import java.net.URI;
+import org.glassfish.grizzly.http.server.HttpServer;
+import org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpServerFactory;
+import org.glassfish.jersey.server.ResourceConfig;
+
+public class RESTServer
+{
+   public static void main( String[] args ) throws IOException, InterruptedException 
+   {
+      String baseUrl = ( args.length > 0 ) ? args[0] : "http://localhost:4434";
+
+      final HttpServer server = GrizzlyHttpServerFactory.createHttpServer(
+            URI.create( baseUrl ), new ResourceConfig( RESTToUpperCaseService.class, RESTToLowerCaseService.class ), false );
+      Runtime.getRuntime().addShutdownHook( new Thread( new Runnable() {
+         @Override
+         public void run() {
+            server.shutdownNow();
+         }
+      } ) );
+      server.start();
+
+      System.out.println("Grizzly-HTTP-Server gestartet");
+      System.out.println("Stoppen des Grizzly-HTTP-Servers mit: Strg+C\n");
+      System.out.println("RESTful Web Service URL: " + baseUrl + RESTToUpperCaseService.webContextPath);
+      System.out.println("RESTful Web Service URL: " + baseUrl + RESTToLowerCaseService.webContextPath);
+
+      Thread.currentThread().join();
+   }
+}

VerteilteSysteme-Examples/src/verteiltesysteme/rest/RESTToLowerCaseService.java

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+/* Beispiel angelehnt an http://www.torsten-horn.de/techdocs/jee-rest.htm */
+package verteiltesysteme.rest;
+
+import javax.ws.rs.*;
+import javax.ws.rs.core.MediaType;
+
+@Path( RESTToLowerCaseService.webContextPath )
+public class RESTToLowerCaseService
+{
+   static final String webContextPath = "/touppercase";
+   
+   @GET @Produces( MediaType.TEXT_PLAIN )
+   public String toUpperCasePlain( @QueryParam("input") String input )
+   {
+      return "Plain-Text: " + input.toUpperCase();
+   }
+
+   @GET @Produces( MediaType.TEXT_HTML )
+   public String toUpperCaseHtml( @QueryParam("input") String input )
+   {
+      return "<html><title>RESTService</title><body><h2>HTML: " + input.toUpperCase() + "</h2></body></html>";
+   }
+   
+   @GET @Produces( MediaType.APPLICATION_JSON )
+   public String toUpperCaseJson( @QueryParam("input") String input )
+   {
+      return "{\n  \"type\": \"JSON\",\n  \"output\": \"" + input.toUpperCase() + "\"\n}";
+   }  
+
+}

VerteilteSysteme-Examples/src/verteiltesysteme/rest/RESTToUpperCaseService.java

@@ -0,0 +1,30 @@
+/* Beispiel angelehnt an http://www.torsten-horn.de/techdocs/jee-rest.htm */
+package verteiltesysteme.rest;
+
+import javax.ws.rs.*;
+import javax.ws.rs.core.MediaType;
+
+@Path( RESTToUpperCaseService.webContextPath )
+public class RESTToUpperCaseService
+{
+   static final String webContextPath = "/tolowercase";
+   
+   @GET @Produces( MediaType.TEXT_PLAIN )
+   public String toLowerCasePlain( @QueryParam("input") String input )
+   {
+      return "Plain-Text: " + input.toLowerCase();
+   }
+
+   @GET @Produces( MediaType.TEXT_HTML )
+   public String toLowerCaseHtml( @QueryParam("input") String input )
+   {
+      return "<html><title>RESTService</title><body><h2>HTML: " + input.toLowerCase() + "</h2></body></html>";
+   }
+   
+   @GET @Produces( MediaType.APPLICATION_JSON )
+   public String toLowerCaseJson( @QueryParam("input") String input )
+   {
+      return "{\n  \"type\": \"JSON\",\n  \"output\": \"" + input.toLowerCase() + "\"\n}";
+   }  
+   
+}