<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>shardingsphere-jdbc-core-spring-boot-starter</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
注:示例的数据库连接池为HikariCP,可根据业务场景更换为其他主流数据库连接池。
# 配置真实数据源
spring.shardingsphere.datasource.names=ds0,ds1
# 配置第 1 个数据源
spring.shardingsphere.datasource.ds0.type=com.zaxxer.hikari.HikariDataSource
spring.shardingsphere.datasource.ds0.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.ds0.jdbc-url=jdbc:mysql://localhost:3306/ds0
spring.shardingsphere.datasource.ds0.username=root
spring.shardingsphere.datasource.ds0.password=
# 配置第 2 个数据源
spring.shardingsphere.datasource.ds1.type=com.zaxxer.hikari.HikariDataSource
spring.shardingsphere.datasource.ds1.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.ds1.jdbc-url=jdbc:mysql://localhost:3306/ds1
spring.shardingsphere.datasource.ds1.username=root
spring.shardingsphere.datasource.ds1.password=
# 配置 t_order 表规则
spring.shardingsphere.rules.sharding.tables.t_order.actual-data-nodes=ds$->{0..1}.t_order$->{0..1}
# 配置分库策略
spring.shardingsphere.rules.sharding.tables.t_order.database-strategy.standard.sharding-column=user_id
spring.shardingsphere.rules.sharding.tables.t_order.database-strategy.standard.sharding-algorithm-name=database_inline
# 配置分表策略
spring.shardingsphere.rules.sharding.tables.t_order.table-strategy.standard.sharding-column=order_id
spring.shardingsphere.rules.sharding.tables.t_order.table-strategy.standard.sharding-algorithm-name=table_inline
# 省略配置 t_order_item 表规则...
# ...
# 配置 分片算法
spring.shardingsphere.rules.sharding.sharding-algorithms.database_inline.type=INLINE
spring.shardingsphere.rules.sharding.sharding-algorithms.database_inline.props.algorithm-expression=ds_${user_id % 2}
spring.shardingsphere.rules.sharding.sharding-algorithms.table_inline.type=INLINE
spring.shardingsphere.rules.sharding.sharding-algorithms.table_inline.props.algorithm-expression=t_order_${order_id % 2}
如果计划使用 JNDI 配置数据库,在应用容器(如 Tomcat)中使用 ShardingSphere-JDBC 时,
可使用 spring.shardingsphere.datasource.${datasourceName}.jndiName
来代替数据源的一系列配置。如:
# 配置真实数据源
spring.shardingsphere.datasource.names=ds0,ds1
# 配置第 1 个数据源
spring.shardingsphere.datasource.ds0.jndi-name=java:comp/env/jdbc/ds0
# 配置第 2 个数据源
spring.shardingsphere.datasource.ds1.jndi-name=java:comp/env/jdbc/ds1
# 省略规则配置...
# ...
直接通过注入的方式即可使用 ShardingSphereDataSource;或者将 ShardingSphereDataSource 配置在JPA, MyBatis 等 ORM 框架中配合使用。
@Resource
private DataSource dataSource;