这篇接着上篇，把没贴完的代码写完，上篇主要完成了一些公共配置和界面的东西，这篇把后台的代码完成。

首先是web包下属于的control层的类UserController，这相当于Struts中的Action，是重要的类：

package com.tgb.web;import java.io.IOException;import java.io.PrintWriter;import javax.annotation.Resource;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import com.tgb.entity.User;import com.tgb.manager.UserManager;@Controller@RequestMapping("/user")public class UserController {	@Resource(name="userManager")	private UserManager userManager;	@RequestMapping("/getAllUser")	public String getAllUser(HttpServletRequest request){				request.setAttribute("userList", userManager.getAllUser());				return "/index";	}		@RequestMapping("/getUser")	public String getUser(String id,HttpServletRequest request){				request.setAttribute("user", userManager.getUser(id));			return "/editUser";	}		@RequestMapping("/toAddUser")	public String toAddUser(){		return "/addUser";	}		@RequestMapping("/addUser")	public String addUser(User user,HttpServletRequest request){				userManager.addUser(user);				return "redirect:/user/getAllUser";	}		@RequestMapping("/delUser")	public void delUser(String id,HttpServletResponse response){				String result = "{\"result\":\"error\"}";				if(userManager.delUser(id)){			result = "{\"result\":\"success\"}";		}				response.setContentType("application/json");				try {			PrintWriter out = response.getWriter();			out.write(result);		} catch (IOException e) {			e.printStackTrace();		}	}		@RequestMapping("/updateUser")	public String updateUser(User user,HttpServletRequest request){				if(userManager.updateUser(user)){			user = userManager.getUser(user.getId());			request.setAttribute("user", user);			return "redirect:/user/getAllUser";		}else{			return "/error";		}	}}

然后是属于manager包下的业务逻辑类，接口UserManager：

package com.tgb.manager;import java.util.List;import com.tgb.entity.User;public interface UserManager {	public User getUser(String id);		public List
    
      getAllUser();		public void addUser(User user);		public boolean delUser(String id);		public boolean updateUser(User user);}
    

实现类UserManagerImpl：

package com.tgb.manager;import java.util.List;import com.tgb.dao.UserDao;import com.tgb.entity.User;public class UserManagerImpl implements UserManager {	private UserDao userDao;		public void setUserDao(UserDao userDao) {		this.userDao = userDao;	}	@Override	public User getUser(String id) {		return userDao.getUser(id);	}	@Override	public List
    
      getAllUser() {		return userDao.getAllUser();	}	@Override	public void addUser(User user) {		userDao.addUser(user);	}	@Override	public boolean delUser(String id) {				return userDao.delUser(id);	}	@Override	public boolean updateUser(User user) {		return userDao.updateUser(user);	}}
    

最后是属于dao包底下的DAO层，主要由Hibernate完成。接口UserDao：

package com.tgb.dao;import java.util.List;import com.tgb.entity.User;public interface UserDao {	public User getUser(String id);		public List
    
      getAllUser();		public void addUser(User user);		public boolean delUser(String id);		public boolean updateUser(User user);}
    

实现类UserDaoImpl：

package com.tgb.dao;import java.util.List;import org.hibernate.Query;import org.hibernate.SessionFactory;import com.tgb.entity.User;public class UserDaoImpl implements UserDao {	private SessionFactory sessionFactory;	public void setSessionFactory(SessionFactory sessionFactory) {		this.sessionFactory = sessionFactory;	}		@Override	public User getUser(String id) {				String hql = "from User u where u.id=?";		Query query = sessionFactory.getCurrentSession().createQuery(hql);		query.setString(0, id);				return (User)query.uniqueResult();	}	@Override	public List
    
      getAllUser() {				String hql = "from User";		Query query = sessionFactory.getCurrentSession().createQuery(hql);				return query.list();	}	@Override	public void addUser(User user) {		sessionFactory.getCurrentSession().save(user);	}	@Override	public boolean delUser(String id) {				String hql = "delete User u where u.id = ?";		Query query = sessionFactory.getCurrentSession().createQuery(hql);		query.setString(0, id);				return (query.executeUpdate() > 0);	}	@Override	public boolean updateUser(User user) {				String hql = "update User u set u.userName = ?,u.age=? where u.id = ?";		Query query = sessionFactory.getCurrentSession().createQuery(hql);		query.setString(0, user.getUserName());		query.setString(1, user.getAge());		query.setString(2, user.getId());				return (query.executeUpdate() > 0);	}}
    

最后外加一个配置spring-beans.xml，放在config.spring包下，负责为各层依赖注入需要的对象：

到此为止，所有的配置和代码完成，部署—运行，运行结果如下图：

这个小实例结束，下篇将对SpringMVC和Struts2做一个对比。

实例下载地址：http://download.csdn.net/detail/stubbornpotatoes/5489587