快速上手Mybatis-plus結(jié)構(gòu)構(gòu)建過程

更新時(shí)間：2024年07月17日 11:26:48 作者：qwecxzz

這篇文章主要介紹了快速上手Mybatis-plus結(jié)構(gòu)構(gòu)建過程,具有很好的參考價(jià)值,希望對(duì)大家有所幫助,如有錯(cuò)誤或未考慮完全的地方,望不吝賜教

前言

如何快速上手使用一次Mybatis-plus?

話不多說直接開始

官方文檔

配置實(shí)體類（和自己數(shù)據(jù)庫表對(duì)應(yīng)）

package com.example.jsr303.entity;

import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;

import java.io.Serializable;

/**
 * 學(xué)習(xí)測(cè)試JSR303
 */

@Data
@TableName("test")
public class TestEntity implements Serializable {

    //忽略掉 設(shè)置序列化和反序列化的serialVersionUID
    //想了解一下可以去這篇博客 https://blog.csdn.net/qq_45503106/article/details/107950914
    private static final long serialVersionUID = 1L;

    /**
     * test表主鍵ID
     */
    @TableId
    private Integer id;
    /**
     *  姓名
     */
    private String name;

    /**
     * 郵箱
     */
    private String email;

}

一定記得使用@TableName 綁定你這個(gè)數(shù)據(jù)庫的表

否則按照數(shù)據(jù)庫名+實(shí)體類名去找你的表

一般都找不到

一、導(dǎo)入依賴

<dependencies>
<!--        web mvc-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--        mysql鏈接-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
<!--        lombok簡(jiǎn)化插件-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
<!--        test測(cè)試-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--        myabtis-plus依賴-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.2.0</version>
        </dependency>
    </dependencies>

二、配置配置文件yml

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: 123456
    url: jdbc:mysql://localhost:3306/jsr303?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2B8
server:
  port: 8082
mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

三配置Mapper Service Controller三層架構(gòu)

Mapper層

package com.example.jsr303.dao;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.example.jsr303.entity.TestEntity;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface TestDao extends BaseMapper<TestEntity> {
}

Service層

package com.example.jsr303.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.example.jsr303.entity.TestEntity;
import org.springframework.stereotype.Service;


public interface TestService extends IService<TestEntity> {
}

ServiceImpl層

package com.example.jsr303.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.jsr303.dao.TestDao;
import com.example.jsr303.entity.TestEntity;
import com.example.jsr303.service.TestService;
import org.springframework.stereotype.Service;

@Service
public class TestServiceImpl extends ServiceImpl<TestDao, TestEntity> implements TestService {
}

Controller層

@RestController
@RequestMapping("/test")
public class TestController {
    @Autowired
    TestService testService;

    @RequestMapping("/list")
    public List<TestEntity> selectAll(){
     return testService.list();
    }
}