一、pom依赖

org.springframework/spring-webmvc/4.3.2.RELEASE

org.springframework/spring-context-support/4.3.2.RELEASE

com.fasterxml.jackson.core/jackson-databind/2.7.5

    	
     
      4.0.0
     	
     
      com.harry
     	
     
      hello-spring
     	
     
      war
     	
     
      0.0.1-SNAPSHOT
     	
     
      hello-spring Maven Webapp
     	
     
      http://maven.apache.org
     	
     		
      			
       
        junit
       			
       
        junit
       			
       
        3.8.1
       			
       
        test
       		
      		
      			
       
        org.springframework
       			
       
        spring-context-support
       			
       
        4.3.2.RELEASE
       		
      		
      			
       
        org.springframework
       			
       
        spring-webmvc
       			
       
        4.3.2.RELEASE
       		
      		
      			
       
        com.fasterxml.jackson.core
       			
       
        jackson-databind
       			
       
        2.7.5
       		
      	
     	
     		
      
       springmvc
      		
      			
       				
        
         org.mortbay.jetty
        				
        
         jetty-maven-plugin
        				
        
         8.1.8.v20121106
        				
        					
         
          manual
         					
          
          
           /
           
         					
          
           
           
            9080
            
            
           
         				
        			
       		
      	
     
    

二、返回数据的实体类

package com.harry.entity;import java.io.Serializable;import javax.xml.bind.annotation.XmlRootElement;@XmlRootElementpublic class User implements Serializable {	/**	 * 	 */	private static final long serialVersionUID = -4649332726051517364L;	private Long id;	private String name;	public Long getId() {		return id;	}	public void setId(Long id) {		this.id = id;	}	public String getName() {		return name;	}	public void setName(String name) {		this.name = name;	}}

三、建立Controller

package com.harry.controller;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RestController;import com.harry.entity.User;@RestController@RequestMapping("/user")public class UserController {	@RequestMapping(value = "/{id}", method = RequestMethod.GET)	public User view(@PathVariable("id") Long id) {		User user = new User();		user.setId(id);		user.setName("zhangsan");		return user;	}}

四、classpath:spring-mvc.xml

五、web.xml

    	
     
      Archetype Created Web Application
     	
     		
      
       springmvc
      		
      
       org.springframework.web.servlet.DispatcherServlet
      		
      			
       
        contextConfigLocation
       			
       
        classpath:spring-mvc.xml
       		
      		
      
       1
      	
     	
     		
      
       springmvc
      		
      
       /*
      	
     
    

六、以jetty启动 mvn jetty:run

七、

http://localhost:9080/user/4.xml

http://localhost:9080/user/4.json

http://localhost:9080/user/4                    ==> 默认是xml，因为实体类有@XmlRootElement