springBoot——整合mybatis

spring整合mybatis

springBoot整合mybaits

配置文件

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/test
    driver-class-name: com.mysql.jdbc.Driver
    username: root
    password: wwsa20030207
    type: com.alibaba.druid.pool.DruidDataSource

dao层:一定要记得加@Mapper

package com.example.springboot_05.dao;

import com.example.springboot_05.domain.book;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
@Mapper
public interface bookdao {
    @Select("select * from tbl_book where id=#{id}")
    public book getById(Integer id);
}

domain层

package com.example.springboot_05.domain;

public class book {
    private Integer id;
    private String type;
    private String name;
    private String description;

    public book(Integer id, String type, String name, String description) {
        this.id = id;
        this.type = type;
        this.name = name;
        this.description = description;
    }

    @Override
    public String toString() {
        return "book{" +
                "id=" + id +
                ", type='" + type + '\'' +
                ", name='" + name + '\'' +
                ", description='" + description + '\'' +
                '}';
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public book() {
    }
}

测试

package com.example.springboot_05;

import com.example.springboot_05.dao.bookdao;
import com.example.springboot_05.domain.book;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class SpringBoot05ApplicationTests {
    @Autowired
    private bookdao bookdao;
    @Test
    void TestGetById() {
        book byId = bookdao.getById(1);
        System.out.println(byId);
    }

}