本项目基于Annotation方式的SpringMVC4+Sping4+Hibernate4。用到的所有jar包如下：

项目的整体结构如下：

1. WEB_INF/web.xml:

    
    
       < display-name>SpringMVC_xml  < welcome-file-list>    
     
      index.html 
         
     
      index.htm 
         
     
      index.jsp 
         
     
      default.html 
         
     
      default.htm 
         
     
      default.jsp 
       
        < filter>     
     
      encodingFilter 
            
     
       org.springframework.web.filter.CharacterEncodingFilter     
      
                   
       
        encoding 
                   
       
        utf-8
             
       
        
        < filter-mapping>     
      
       encodingFilter 
           
      
       /* 
           
        
        
               
      
               
       
        springmvc        
        
          org.springframework.web.servlet.DispatcherServlet        
         
                      
          
           contextConfigLocation 
                      
          
           classpath:spring-mvc.xml 
                  
                 
         
          1 
             
        
       
          
      
               
       
        springmvc        
        
         *.action 
            
       
             
      
               
       
         org.springframework.web.context.ContextLoaderListener    
       
             
      
               
       
        contextConfigLocation 
               
       
        classpath:beans.xml 
           
         
     
    

2.src/beans.xml:

    
    
                
         
                  
     
                     
      
                           
       
                  
                  
                  
                  
                       
        
               
                         
         
                   
                   
          
                         
           
                             
            
             org.hibernate.dialect.MySQLDialect                  
             
               true
                              
              
                update
                                 
               
                 true
                              
               
              
             
            
                                   
           
                          
            
                              
             
              entity 
                          
                                      
                
            
                  
             
                       
             
            
           
          
         
        
       
      
     
    

3.src/spring-mvc.xml:

4.user/user.jsp:

<%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%>
    
     	
     
      
		uname:
      
      
		pwd:
      
      
		repwd
      
      
		
      		提交：
      	
     
    

5.user/userResult.jsp:

<%@ page language ="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%><%@page import= "entity.User" %>
    
          
     
      注册成功 
           uname:<%= request.getParameter("uname" ) %> 写入成功
    

6.controller.UserController.java:

package controller;import javax.annotation.Resource;import org.springframework.web.bind.annotation.RequestMapping;import entity.User;import service.UserService;import org.springframework.stereotype.Controller;@Controller@RequestMapping("user/user.action")public class UserController{	private UserService userService;		public UserService getUserService() {		return userService;	}	@Resource	public void setUserService(UserService userService) {		this.userService = userService;	}	private User user;		@RequestMapping(params="method=log")	public String log(String uname,String pwd){		System.out.println("log() invoked");		System.out.println(uname+pwd);		user = new User();		user.setUname(uname);		user.setPwd(pwd);		userService.add(user);		return "user/userResult";			}		@RequestMapping(params="method=log2")	public String log2(User user){//类似Struts2的模型驱动，可自动将页面提交的uname和pwd封装进该User对象		System.out.println("log2() invoked");		System.out.println(user.getUname()+user.getPwd());		userService.add(user);		return "user/userResult";			}}

7.entity.User.java:

package entity;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;@Entitypublic class User {     private int id;     private String uname;     private String pwd;     @Id     @GeneratedValue     public int getId() {          return id;     }     public void setId(int id) {          this.id = id;     }     public String getUname() {          return uname;     }     public void setUname(String uname) {          this.uname = uname;     }     public String getPwd() {          return pwd;     }     public void setPwd(String pwd) {          this.pwd = pwd;     }    }

8.service.UserService.java:

package service;import java.util.List;import entity.User;public interface UserService {     boolean exists(User user);     void add(User user);         List
    
      getUsers();         User getUser(int id);}
    

9.service.UserServiceImpl.java:

package service;import java.util.List;import javax.annotation.Resource;import org.springframework.transaction.annotation.Transactional;import dao.UserDao;import entity.User;public class UserServiceImpl implements UserService { private UserDao userDao;public UserDao getUserDao() {return userDao;}@Resourcepublic void setUserDao(UserDao userDao) {this.userDao = userDao;}/* (non-Javadoc)* @see service.UserService#exists(entiey.User)*/@Overridepublic boolean exists(User user) {return userDao.checkUserExistsByUname(user.getUname());   }/* (non-Javadoc)* @see service.UserService#add(entiey.User)*/@Override@Transactionalpublic void add(User user) {System.out.println("add成功");userDao.save(user);  }@Overridepublic List
    
      getUsers() {return userDao.getUsers();}@Overridepublic User getUser(int id) {return userDao.getUser(id);}}
    

10.dao.UserDao.java:

package dao;import java.util.List;import entity.User;public interface UserDao {     boolean checkUserExistsByUname(String uname);     void save(User user);         List
    
      getUsers();         User getUser(int id);}
    

11.dao.UserDaoImpl.java:

package dao;import java.util.List;import javax.annotation.Resource;import org.springframework.orm.hibernate4.HibernateTemplate;import entity.User;public class UserDaoImpl implements UserDao {     private HibernateTemplate hibernateTemplate;             public HibernateTemplate getHibernateTemplate() {          return hibernateTemplate;     }         @Resource     public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {          this.hibernateTemplate = hibernateTemplate;     }             /* (non-Javadoc)     * @see dao.UserDao#checkUserExistsByUname(java.lang.String)     */     @Override     public boolean checkUserExistsByUname(String uname){          //String sql = "select count(*) from User where uname = '"+uname+"'";          String sql = "from User where uname = '"+uname+"'";          List list = (List) hibernateTemplate.find(sql);          if(list!=null&&list.size()>0){               return true;          }                  return false;     }         /* (non-Javadoc)     * @see dao.UserDao#save(entiey.User)     */     @Override     public void save(User user){          hibernateTemplate.save(user);     }     @Override     public List
    
      getUsers() {          return (List
     
      ) hibernateTemplate.find("from User");     }     @Override     public User getUser(int id) {          return hibernateTemplate.load(User.class, id);          //使用load()时，会报LazyInitializationException，这时需在web.xml中配置过滤器openSessionInViewFilter          //return hibernateTemplate.get(User.class, id);独立表格或小数据量的可使用get获取     }}