springboot+mybatisplus 配置多数据源

1、pom.xml文件引入dynamic-datasource-spring-boot-starter包

         <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
            <version>3.2.0</version>
        </dependency>

 

2、application.properties配置多个数据源

spring.datasource.dynamic.datasource.master.url=jdbc:sqlserver://xxx.xx.xx.xxx:1433;DatabaseName=db
spring.datasource.dynamic.datasource.master.username=sa
spring.datasource.dynamic.datasource.master.password=sa
spring.datasource.dynamic.datasource.master.driver-class-name=com.microsoft.sqlserver.jdbc.SQLServerDriver

spring.datasource.dynamic.datasource.slave_1.url=jdbc:sqlserver://xxx.xx.xx.xxx:1433;DatabaseName=db1
spring.datasource.dynamic.datasource.slave_1.username=sa
spring.datasource.dynamic.datasource.slave_1.password= sa
spring.datasource.dynamic.datasource.slave_1.driver-class-name= com.microsoft.sqlserver.jdbc.SQLServerDriver

 

3.在dao层引入 (在service层、方法上添加也可) @DS("slave_1")

@Mapper
@DS("slave_1")
public interface AreaMapper extends BaseMapper<AreaEntity> {

}

引入之后该dao、service、方法就会匹配到对应数据源进行查询 默认是master

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