Spring MVC 异步交互demo：

1.jsp页面：

<%@ page language="java" contentType="text/html; charset=utf-8"      pageEncoding="utf-8"%>            
                               
     
    

2.controller：

package xm.zjl.controller;    import java.io.IOException;  import java.util.HashMap;  import java.util.Map;    import javax.servlet.http.HttpServletRequest;  import javax.servlet.http.HttpServletResponse;    import org.springframework.stereotype.Controller;  import org.springframework.web.bind.annotation.RequestMapping;  import org.springframework.web.bind.annotation.ResponseBody;    /**  * 登录controller  *   * @author Administrator  *  */  @Controller  @RequestMapping("/user/*")  public class LoginController {      @RequestMapping(value="login.do")      public @ResponseBody Map
     
       login(HttpServletRequest request,HttpServletResponse response) throws IOException{          System.out.println(request.getParameter("name"));          Map
      
        map = new HashMap
       
        ();                    if(request.getParameter("name").equals("123")){              System.out.println("城东");              map.put("msg", "成功");          }else{              System.out.println("失败");              map.put("msg", "失败");          }          return map;      }        }
       
      
     

3.pom文件：

           
      
       4.0.0
            
      
       xiaoma
            
      
       zjl
            
      
       war
            
      
       0.0.1-SNAPSHOT
            
      
       zjl Maven Webapp
            
      
       http://maven.apache.org
            
                
                     
        
         junit
                      
        
         junit
                      
        
         3.8.1
                      
        
         test
                  
                 
                     
        
         org.springframework
                      
        
         spring-webmvc
                      
        
         4.1.0.RELEASE
                  
                 
                     
        
         org.springframework
                      
        
         spring-web
                      
        
         4.1.0.RELEASE
                  
                 
                     
        
         com.fasterxml.jackson.core
                      
        
         jackson-databind
                      
        
         2.5.0
                  
                 
                     
        
         commons-beanutils
                      
        
         commons-beanutils
                      
        
         1.9.2
                  
                 
                     
        
         org.codehaus.jackson
                      
        
         jackson-mapper-asl
                      
        
         1.9.13
                  
                   
                     
        
         org.codehaus.jackson
                      
        
         jackson-core-asl
                      
        
         1.9.13
                  
             
            
                
       
        zjl
                 
                     
                          
         
          org.mortbay.jetty
                           
         
          jetty-maven-plugin
                           
                               
          
           9966
                                
          
           foo
                                
          
           0
                                
           
            
            
             8088
             
            
             60000
             
            
                                
           
           
            /
            
                            
                       
                        
                          
         
          org.apache.tomcat.maven
                           
         
          tomcat7-maven-plugin
                           
         
          2.2
                           
                               
          
           8088
                                
          
           /
                                
          
           UTF-8
                            
                       
                  
             
        
     

这里注意如果相关json包没有添加到pom.xml文件中会报：406 not acceptable 

4.spring-servlet.xml文件：

5.web.xml文件：

         
             
                  
       
        contextConfigLocation
                   
                   
       
        /WEB-INF/spring-servlet.xml
               
              
                  
       
        org.springframework.web.context.ContextLoaderListener
               
              
              
                  
       
        spring
                   
       
        org.springframework.web.servlet.DispatcherServlet
                   
       
        1
               
              
              
                  
       
        spring
                   
       
        *.do
               
          
     

这里需要注意的是：

 
                   
        
         spring
                    
        
         *.do
               　　 
         

如果写成：

 
                   
        
         spring
                    
        
         /
                
         

会提示：$ is not defined错误

记录一下