Friday, 4 September 2015

Example Of Web Services

Web Services Jersey


Example


Step 1 : index.jsp
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<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
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    pageEncoding="ISO-8859-1"%>
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Insert title here</title>
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</head>
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<body>
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​
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<a href="rest/abc">Click Here</a>
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​
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</body>
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</html>
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​
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​


Step 2 : web.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
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 <servlet>
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    <servlet-name>Jersey REST Service</servlet-name>
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    <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
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     <init-param>
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        <param-name>jersey.config.server.provider.packages</param-name>
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        <param-value>com.nitin.ex</param-value>
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    </init-param>
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    <load-on-startup>1</load-on-startup>
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  </servlet>
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  <servlet-mapping>
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    <servlet-name>Jersey REST Service</servlet-name>
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    <url-pattern>/rest/*</url-pattern>
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  </servlet-mapping>
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</web-app>
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​
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​


Step 3 : ClientTest.java 
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package com.nitin.client;
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import java.net.URI;
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import javax.ws.rs.client.Client;
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import javax.ws.rs.client.ClientBuilder;
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import javax.ws.rs.client.WebTarget;
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import javax.ws.rs.core.MediaType;
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import javax.ws.rs.core.UriBuilder;
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import org.glassfish.jersey.client.ClientConfig;
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​
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public class ClientTest {
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  public static void main(String[] args) {
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      ClientConfig config = new ClientConfig();
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      Client client = ClientBuilder.newClient(config);
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      WebTarget target = client.target(getBaseURI());
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​
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     System.out.println(target.path("rest").path("abc").request().accept(MediaType.TEXT_PLAIN).get(String.class));
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      System.out.println(target.path("rest").path("abc").request().accept(MediaType.TEXT_XML).get(String.class));
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      System.out.println(target.path("rest").path("abc").request().accept(MediaType.TEXT_HTML).get(String.class));
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    }
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​
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    private static URI getBaseURI() {
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      return UriBuilder.fromUri("http://localhost:8080/WSJersyDemo/").build();
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    }
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​
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}
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​
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​
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​


Step 4 : Welcome.java 
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package com.nitin.ex;
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import javax.ws.rs.GET;
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import javax.ws.rs.Path;
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import javax.ws.rs.Produces;
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import javax.ws.rs.core.MediaType;
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​
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@Path("/abc")
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public class Welcome {
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  @GET
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  @Produces(MediaType.TEXT_PLAIN)
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  public String nit()
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  {
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    return "welcome nitin";
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  }
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  @GET
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    @Produces(MediaType.TEXT_XML)
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    public String sayXMLHello() {
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      return "<?xml version=\"1.0\"?>" + "<hello> nitin xml demo" + "</hello>";
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    }
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   @GET
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    @Produces(MediaType.TEXT_HTML)
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    public String sayHtmlHello() {
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      return "<html> " + "<title>" + "Hello Jersey" + "</title>"
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          + "<body><h1>" + "hello nitin text html" + "</h1></body>" + "</html> ";
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    }
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​
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}
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​
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​
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​



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