通过idea实现springboot集成mybatys

概述

使用springboot 集成 mybatys后，通过http请求接口，使得通过http请求可以直接直接操作数据库； 完成后端功能框架；前端是准备上小程序，调用https的请求接口用。简单实现后端框架；

详细

springboot 集成 mybatys项目demo

通过idea实现springboot集成mybatys；通过http请求操作mysql数据库

先将science.zip导入idea；

在mysql中运行test.sql;创建测试用数据库；数据库test用户名密码root/root

项目中只实现了一个对象User；通过controller接受http请求实现对user的操作；

实现过程：

编辑application.properties

spring.datasource.url = jdbc:mysql://127.0.0.1:3306/test
spring.datasource.username = root
spring.datasource.password = root
spring.datasource.driverClassName = com.mysql.cj.jdbc.Driver

实现springboot启动类

package com.liji.science;import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;@SpringBootApplication
public class ScienceApplication {public static void main(String[] args) {SpringApplication.run(ScienceApplication.class, args);}}

实现controller

package com.liji.science.controller;import com.liji.science.bean.User;
import com.liji.science.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import java.util.List;@RestController
public class UserController {@Autowiredprivate UserService userService;@RequestMapping("/listUser")public  List<User> listUser(Model model) {List<User> users = userService.findAll();model.addAttribute("users", users);return users;}/*@RequestMapping("/toAdd")public String toAdd() {return "/addUser";}@RequestMapping("/add")public String addUser(User user) {userService.addUser(user);return "redirect:/listUser";}@RequestMapping("/toUpdate")public String toUpdate(Model model, int id) {User user = userService.findById(id);model.addAttribute("user", user);return "/updateUser";}@RequestMapping("/update")public String updateUser(User user) {userService.updateUser(user);return "redirect:/listUser";}@RequestMapping("/delete")public String deleteUser(int id) {userService.deleteUser(id);return "redirect:/listUser";}*/}

service实现

package com.liji.science.mapper;import com.liji.science.bean.User;
import org.apache.ibatis.annotations.*;import java.util.List;@Mapper
public interface UserMapper {/*** 全部用户查询* @return*/@Select("SELECT ID,NAME,PASSWORD,AGE FROM USER")List<User> findAll();/*** 新增用户*/@Insert("INSERT INTO USER(NAME,PASSWORD,AGE)VALUES(#{name}, #{password}, #{age})")void addUser(User user);/*** 修改用户*/@Update("UPDATE USER SET NAME=#{name}, PASSWORD=#{password}, AGE=#{age} WHERE ID=#{id}")void updateUser(User user);/*** 删除用户*/@Delete("DELETE FROM USER WHERE ID=#{id}")void deleteUser(int id);@Select("SELECT ID,NAME,PASSWORD,AGE FROM USER WHERE ID=#{id}")User findById(@Param("id")int id);
}

创建实体类
package com.liji.science.bean;public class User {private int id;private String name;private String password;private int age;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}
}

idea启动成功；

idea启动成功；

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