SpringBoot mybatis方式實現增刪改查 首先看一下目錄結構
WeChat8ac39b77d612cd05cf4a0c1775552328.png
application.yml文件
server: port: 8080 spring: datasource: name: test url: jdbc:mysql://127.0.0.1:3306/myDataBase username: root password: 1qaz2wsx type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.jdbc.Driver filters: stat maxActive: 20 initialSize: 1 maxWait: 60000 minIdle: 1 timeBetweenEvictionRunsMillis: 60000 minEvictableIdleTimeMillis: 300000 validationQuery: select 'x' testWhileIdle: true testOnBorrow: false testOnReturn: false poolPreparedStatements: true maxOpenPreparedStatements: 20 mybatis: mapper-locations: classpath:mapping/*.xml type-aliases-package: com.winter.model
Model 代碼如下
package com.winter.model; public class User { private Integer userId; private String userName; private String userAge; public Integer getUserId() { return userId; } public void setUserId(Integer userId) { this.userId = userId; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName == null ? null : userName.trim(); } public String getUserAge() { return userAge; } public void setUserAge(String userAge) { this.userAge = userAge == null ? null : userAge.trim(); } }
ViewController 代碼都加了註釋
package com.winter.controller; import com.winter.model.User; import com.winter.service.UserService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; @Controller @RequestMapping(value = "/user") public class UserController { @Autowired private UserService userService; /*Get方式方便web測試*/ /*增加用戶*/ // http://localhost:8080/user/addUser/?userName=Alex&userAge=20 @ResponseBody @RequestMapping(value = "/addUser", produces = {"application/json;charset=UTF-8"}) public int addUser(User user){ return userService.addUser(user); } /*刪除用戶*/ // http://localhost:8080/user/deleteUser/?userId=2 @ResponseBody @RequestMapping(value = "/deleteUser",produces = {"application/json;charset=UTF-8"}) public int deleteUser(User user){ return userService.deleteUser(user); } /*修改用戶*/ // http://localhost:8080/user/updateUser/?userId=3&userName=劉牧師&userAge=50 @ResponseBody @RequestMapping(value = "/updateUser",produces = {"application/json;charset=UTF-8"}) public int updateUser(User user){ return userService.updateUser(user); } /*根據UserId查找用戶*/ // http://localhost:8080/user/getUserById/?userId=3 @ResponseBody @RequestMapping(value = "/getUserById", produces = {"application/json;charset=UTF-8"}) public User getUserById(User user){ return userService.getUserById(user); } /*查詢所有用戶*/ // http://localhost:8080/user/getAllUsers @ResponseBody @RequestMapping(value = "/getAllUsers", produces = {"application/json;charset=UTF-8"}) public Object findAllUser(){ return userService.findAllUser(); } }
UserService
package com.winter.service; import com.winter.model.User; import java.util.List; public interface UserService { int addUser(User user); int deleteUser(User user); int updateUser(User user); User getUserById(User user); List<User> findAllUser(); }
UserServiceImpI
package com.winter.service; import com.winter.mapper.UserMapper; import com.winter.model.User; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.util.List; @Service public class UserServiceImpl implements UserService{ @Autowired private UserMapper userMapper; @Override public int addUser(User user) { return userMapper.addUser(user); } @Override public int deleteUser(User user){ return userMapper.deleteUser(user); } @Override public int updateUser(User user){ return userMapper.updateUser(user); } @Override public User getUserById(User user){ return userMapper.getUserById(user); } @Override public List<User> findAllUser() { return userMapper.selectAllUser(); } }
UserMapper
package com.winter.mapper; import com.winter.model.User; import java.util.List; public interface UserMapper { int addUser(User user); int deleteUser(User user); int updateUser(User user); User getUserById(User user); List<User> selectAllUser(); }
UserMapper.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > <mapper namespace="com.winter.mapper.UserMapper" > <insert id="addUser" parameterType ="com.winter.model.User"> insert into tb_user(user_name,user_age) values (#{userName},#{userAge}) </insert> <delete id="deleteUser" parameterType ="com.winter.model.User"> delete from tb_user where user_id = #{userId} </delete> <update id="updateUser" parameterType ="com.winter.model.User"> update tb_user set user_name =#{userName},user_age = #{userAge} where user_id= #{userId} </update> <select id="getUserById" parameterType ="com.winter.model.User" resultType="com.winter.model.User"> select user_id userId,user_name userName,user_age userAge from tb_user where user_id= #{userId} </select> <select id="selectAllUser" resultType="com.winter.model.User"> select user_id userId,user_name userName,user_age userAge from tb_user </select> </mapper>