Spring Boot3整合MyBatisPlus实现多数据源 1.导入多数据源pom依赖<!-- 多数据源 --> <!-- https://mvnrepository.com/artifact/com.baomidou/dynamic-datasource-spring-boot3-starter --> <dependency> <groupId>com.baomidou</groupId> <artifactId>dynamic-datasource-spring-boot3-starter</artifactId> <version>4.3.1</version> </dependency>2.配置数据库链接spring: datasource: dynamic: #主要数据库 primary: master #严格匹配模式，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 strict: true datasource: master: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/database_1?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8 username: database_1 password: database_1 type: com.zaxxer.hikari.HikariDataSource account: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/database_2?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=UTF-8 username: database_2 password: database_2 type: com.zaxxer.hikari.HikariDataSource charac: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/database_3?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=UTF-8 username: database_3 password: database_3 type: com.zaxxer.hikari.HikariDataSource postal: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/database_4?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf8 username: database_4 password: database_4 type: com.zaxxer.hikari.HikariDataSource 3.在Mapper上标注@DS比如我这个mapper是Account数据库import com.baomidou.dynamic.datasource.annotation.DS; import com.baomidou.mybatisplus.core.mapper.BaseMapper; import com.jam.entities.gameEntities.Accounts; import org.springframework.stereotype.Repository; @DS("account") @Repository public interface AccountsMapper extends BaseMapper<Accounts> { }4.在启动器标注扫描Mapper@MapperScan("com.jam.mapper.**")@SpringBootApplication @EnableCaching @MapperScan("com.jam.mapper.**") public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } }