多数据库配置

        <!-- 动态数据源 -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
            <version>3.5.0</version>
        </dependency>

spring:
  datasource:
    dynamic:
      primary: mater #设置默认的数据源或者数据源组，默认值即mater
      strict: false #严格匹配数据源,默认false. true未匹配到指定数据源时抛异常, false使用默认数据源
      datasource:
        mater:
          driver-class-name: com.mysql.cj.jdbc.Driver
          #    url: jdbc:mysql://120.79.193.94:3306/dashanvip?characterEncoding=utf-8&useSSL=false&serverTimezone=GMT%2B8
          url: jdbc:mysql://39.108.223tf-8&useSSL=false&serverTimezone=GMT%2B8
          username: root
          password: 
        # 多数据源配置
        multi-datasource:
          url: jdbc:mysql://120.ng?characterEncoding=UTF-8&useUnicode=true&useSSL=false
          username: root
          password: 
          driver-class-name: com.mysql.jdbc.Driver

@Mapper
@DS("multi-datasource")
public interface AppTeacherMapper  extends BaseMapper<AppTeacher> {
}

 DynamicDataSourceContextHolder.push("multi-datasource");  //替换数据源