Jersey Building Rest Service returns JSON data

1. Eclipse creates a dynamic Web project

2. Place the jersey-related jar package in the Libs directory

3. Web. XML adds jersey related content

<?xml version= "1.0" encoding= "UTF-8"? ><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_2_5.xsd "id=" webapp_id "version=" 2.5 "> <display-name>restdemo</ display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file& Gt;index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file> Default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file> default.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>jersey REST Servic E</servlet-name><servlet-class> com.sun.jersey.spi.container.servlet.servletcontainer</ Servlet-class> <init-param> <param-name>com.sun.jersey.config.property.packages</param-name> <param-value>com.huawei.rest.resources</param-value> </init-param> < Load-on-startup>1</load-on-startup></servlet><servlet-mapping> <servlet-name>Jersey REST service</servlet-name> <url-pattern>/rest/*</url-pattern></servlet-mapping> </ Web-app>

4. Create a resource class

Package Com.huawei.rest.resources;import Javax.ws.rs.GET;  Import Javax.ws.rs.Path;  Import javax.ws.rs.Produces;  Import Javax.ws.rs.PathParam;  Import Javax.ws.rs.core.MediaType;    @Path ("/hello") public  class Helloresource {      @GET      @Produces (mediatype.text_plain) public      String SayHello () {          return "Hello Jersey, first demo";      }               @GET      @Path ("/{param}")        @Produces ("Text/plain;charset=utf-8") public      String sayHelloToUTF8 (@ Pathparam ("param") String username) {          return "Hello" + username;      }          @GET      @Path ("/getuser")      @Produces (mediatype.application_json) public      User Getuserjson () {       user User  = new user ();       User.setage (+);       User.setuserid ("005");       User.setusername ("Fmand");       return user;      }      }  

5. Create the User class

Package Com.huawei.rest.resources;import javax.xml.bind.annotation.XmlRootElement; @XmlRootElementpublic class User {int age; String userid; String username;public int Getage () {return age;} public void Setage (int.) {this.age = age;} Public String GetUserid () {return userid;} public void Setuserid (String userid) {this.userid = userid;} Public String GetUserName () {return username;} public void Setusername (String username) {this.username = username;}}

6. Run a look at the effect

Source code: http://download.csdn.net/detail/mtour/9592162

Jersey Building Rest Service returns JSON data