基于SpringMVC+SpringJDBC的用户管理系统（增删查改）
鉴于MyBatis暂时不会用，所以用刚学的SpringJDBC代替，也很简洁。以下贴出几个重要的代码。
1.UserDaoImpl数据库操作实现类
1 package com.wxy.dao.impl; 2 3 import com.wxy.pojo.User; 4 import org.springframework.jdbc.core.BeanPropertyRowMapper; 5 import org.springframework.jdbc.core.JdbcTemplate; 6 import org.springframework.jdbc.core.RowMapper; 7 import org.springframework.stereotype.Repository; 8 import javax.annotation.Resource; 9 import java.util.ArrayList; 10 import java.util.List; 11 12 @Repository("userDao") 13 public class UserDaoImpl{ 14 //获取JdbcTemplate实例 15 @Resource(name="jdbcTemplate") 16 private JdbcTemplate jdbcTemplate; 17 public void setJdbcTemplate(JdbcTemplate jdbcTemplate) { 18 this.jdbcTemplate = jdbcTemplate; 19 } 20 //执行SQL语句的方法 21 public void execute() { 22 jdbcTemplate.execute("create table account8( id int primary key auto_increment," 23 + "username varchar(50)," + "balance double)"); 24 } 25 //添加用户 26 27 public void addUser(User user) { 28 String sql = "insert into user(id,name,age) value("+user.getId()+",'"+user.getName()+"',"+user.getAge()+")"; 29 this.jdbcTemplate.update(sql); 30 } 31 //更新用户信息 32 public void updateUser(User user){ 33 String sql = "update user set name='"+user.getName()+"',age="+user.getAge()+" where >; 34 this.jdbcTemplate.update(sql); 35 } 36 //删除用户 37 public void deleteUser(int id) { 38 String sql = "delete from user where id =?"; 39 jdbcTemplate.update(sql,id); 40 } 41 //查询所有用户 42 public List<User> query() { 43 String listSql = "select * from user"; 44 RowMapper<User> rowMapper = new BeanPropertyRowMapper<User>(User.class); 45 List<User> users = this.jdbcTemplate.query(listSql,rowMapper); 46 return users; 47 } 48 }
2.UserController数据绑定和页面跳转
1 package com.wxy.controller; 2 3 import com.wxy.dao.impl.ServiceImpl; 4 import com.wxy.pojo.User; 5 import org.springframework.beans.factory.annotation.Autowired; 6 import org.springframework.context.ApplicationContext; 7 import org.springframework.context.support.ClassPathXmlApplicationContext; 8 import org.springframework.stereotype.Controller; 9 import org.springframework.ui.Model; 10 import org.springframework.web.bind.annotation.RequestMapping; 11 import org.springframework.web.bind.annotation.RequestMethod; 12 13 import javax.annotation.Resource; 14 import javax.servlet.http.HttpServletRequest; 15 import javax.servlet.http.HttpServletResponse; 16 import java.util.ArrayList; 17 import java.util.List; 18 19 @Controller("userController") 20 public class UserController { 21 @Resource(name="userService") 22 ServiceImpl userService; 23 public void setUserService(ServiceImpl userService) { 24 this.userService = userService; 25 } 26 27 //跳转添加页面 28 @RequestMapping("touseradd") 29 public String useradd(){ return "useradd"; } 30 31 //执行添加操作，并跳转至成功页面 32 @RequestMapping("/useradd.action") 33 public String add(Model model, User user){ 34 userService.addUser(user); 35 return "success"; 36 } 37 38 //跳转至修改页面 39 @RequestMapping("/touserupdate") 40 public String userupdate(){ return "userupdate"; } 41 42 //执行修改操作 43 @RequestMapping("/userupdate.action") 44 public String update(User user){ 45 userService.updateUser(user); 46 return "success"; 47 } 48 49 //跳转至查询页面 50 @RequestMapping("/touserlist") 51 public String userselect(){ return "userlist"; } 52 53 //执行查询操作 54 @RequestMapping("/userselect.action") 55 public String query(HttpServletRequest request, HttpServletResponse response) { 56 List looklist = userService.query(); 57 request.setAttribute("looklist", looklist); 58 return "forward:touserlist"; 59 } 60 61 //执行删除操作 62 @RequestMapping("/delete.action") 63 public String delete(int id){ 64 userService.deleteUser(id); 65 return "forward:userselect.action"; 66 } 67 }