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

复制代码

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 {
 
    @Autowired
    private 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；

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