一、SpringBoot整合Junit

直接配置的module，默认就可以测试。

SpringBoot整合第三方技术：
1.pom.xml中引入对应的starter（有勾选的勾选，没有勾选的选项手动导入。在这里查 查依赖的网站）
2.配置相关信息

二、SpringBoot整合MyBatis

整合什么技术，就勾选什么技术，就导什么技术的坐标

1.pom.xml中引入starter（MyBatis和Driver）
2.配置中配置数据库连接的相关信息
3.@Mapper @Select 配置文件的类型也可以
pom.xml配置中：
导入mybatis和数据库驱动

<dependencies>
        <!--1.导入对应的starter-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.3.0</version>
        </dependency>

        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

application.yml配置文件中：

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/ssm_db?serverTimezone=UTC
    username: root
    password: "0630"

三、SpringBoot整合MyBatis-plus

配置通用的两步，导入坐标start，做配置。
MyBatis-plus需要手动导入：
pom.xml中：

<dependencies>

        <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.4.3</version>
        </dependency>


        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

application.xml中：

#2.配置相关连接
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://localhost:3306/ssm_db?serverTimezone=UTC
    username: root
    password: "0630"

#设置Mp相关的配置
mybatis-plus:
  global-config:
    db-config:
      table-prefix: tbl_

四、SpringBoot整合Druid

需要手动导入：
pom.xml中：

<dependencies>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.3.0</version>
        </dependency>

        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.alibaba/druid-spring-boot-starter -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.2.17</version>
        </dependency>

    </dependencies>

application.yml中：

spring:
  datasource:
    druid:
      driver-class-name: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://localhost:3306/ssm_db?serverTimezone=UTC
      username: root
      password: "0630"