一、引入dynamic-datasource-spring-boot-starter
<dependency> <groupId>com.baomidou</groupId> <artifactId>dynamic-datasource-spring-boot-starter</artifactId> <version>3.5.0</version> </dependency>
二、配置 application.yml 文件
spring: datasource: dynamic: primary: master #设置默认的数据源或者数据源组,默认值即为master 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: master: url: jdbc:mysql://xx.xx.xx.xx:3306/dynamic username: root password: 123456 driver-class-name: com.mysql.jdbc.Driver # 3.2.0开始支持SPI可省略此配置 slave_1: url: jdbc:mysql://xx.xx.xx.xx:3307/dynamic username: root password: 123456 driver-class-name: com.mysql.jdbc.Driver slave_2: url: ENC(xxxxx) # 内置加密,使用请查看详细文档 username: ENC(xxxxx) password: ENC(xxxxx) driver-class-name: com.mysql.jdbc.Driver #......省略 #以上会配置一个默认库master,一个组slave下有两个子库slave_1,slave_2
# 多主多从 纯粹多库(记得设置primary) 混合配置 spring: spring: spring: datasource: datasource: datasource: dynamic: dynamic: dynamic: datasource: datasource: datasource: master_1: mysql: master: master_2: oracle: slave_1: slave_1: sqlserver: slave_2: slave_2: postgresql: oracle_1: slave_3: h2: oracle_2:
三、使用@DS切换数据源
@DS可以注解在方法上或类上,同时存在就近原则 方法上注解 优先于 类上注解
注解 | 结果 |
没有@DS | 默认数据源 |
@DS("dsName") | dsName可以为组名也可以为具体某个库的名称 |
@Service @DS("slave") public class UserServiceImpl implements UserService { @Autowired private JdbcTemplate jdbcTemplate; public List selectAll() { return jdbcTemplate.queryForList("select * from user"); } @Override @DS("slave_1") public List selectByCondition() { return jdbcTemplate.queryForList("select * from user where age >10"); } }
三、Service 层
Demo1:
public interface UserService extends IService<User> { }
@DS("master") //指定所操作的数据源 @Service public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService { }
Demo2:
public interface ProductService extends IService<Product> { }
@DS("slave_1") @Service public class ProductServiceImpl extends ServiceImpl<ProductMapper, Product> implements ProductService { }
标签:MybatisPlus,十三,数据源,dynamic,xx,master,datasource,slave From: https://www.cnblogs.com/Life-QX/p/17209249.html