SpringBoot 集成 mybatisPlus

一、

1. pom

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.gblfy</groupId>
    <artifactId>springboot-mybatisplus</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot-mybatisplus</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <!--Mybatis-Plus 啓動器-->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.3.1.tmp</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.jmock/jmock-junit4 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13</version>
            <scope>test</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <filtering>true</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>

</project>

2. application.yml

#數據庫庫配置信息
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/ssm?useSSL=false&serverTimezone=GMT%2B8
    username: root
    password: root

#實體掃描，多個package用逗號或者分號分隔
mybatis-plus:
  typeAliasesPackage: com.gblfy.springboot.mybatisplus.entity
  mapper-locations:
    - classpath*:com/gblfy/springboot/**/mapping/*.xml

#  日誌級別 日誌內容 換行
logging:
  level:
    root: warn
    com.gblfy.springboot.mybatisplus.mapper: trace
  pattern:
    console: '%p%m%n'

3. dao層接口集成baseMapper

package com.gblfy.springboot.mybatisplus.mapper;

import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Constants;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.gblfy.springboot.mybatisplus.entity.User;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface UserMapper extends BaseMapper<User> {}

4. 啓動類上+掃描

package com.gblfy.springboot.mybatisplus;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@MapperScan("com.gblfy.springboot.mybatisplus.mapper")
public class SpringbootMybatisplusApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringbootMybatisplusApplication.class, args);
    }
}

5. 創建數據庫

數據庫名：ssm
編碼：utf-8

6. 初始化表結構

/*
 Navicat Premium Data Transfer

 Source Server         : 127.0.0.1
 Source Server Type    : MySQL
 Source Server Version : 50721
 Source Host           : 127.0.0.1:3306
 Source Schema         : ssm

 Target Server Type    : MySQL
 Target Server Version : 50721
 File Encoding         : 65001

 Date: 14/03/2020 20:23:26
*/

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user`  (
  `id` bigint(20) NOT NULL COMMENT '主鍵ID',
  `name` varchar(30) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL COMMENT '姓名',
  `age` int(11) NULL DEFAULT NULL COMMENT '年齡',
  `email` varchar(50) CHARACTER SET utf8 COLLATE utf8_bin NULL DEFAULT NULL COMMENT '郵箱',
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_bin ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES (1, 'Jone', 18, '[email protected]');
INSERT INTO `user` VALUES (2, 'Jack', 20, '[email protected]');
INSERT INTO `user` VALUES (3, 'Tom', 28, '[email protected]');
INSERT INTO `user` VALUES (4, '郭軒', 26, '[email protected]');
INSERT INTO `user` VALUES (5, '郭振', 26, '[email protected]');
INSERT INTO `user` VALUES (1238735228017610754, '郭雨昕', 2, '[email protected]');
INSERT INTO `user` VALUES (1238735794525503489, '郭雨澤', 22, '[email protected]');

SET FOREIGN_KEY_CHECKS = 1;

7. 瀏覽器驗證

http://localhost:8080/user/queryList

8. 源碼地址

https://github.com/gb-heima/springboot-mybatisplus