首先配置pom.xml

        <!-- shardingsphere最新版本 -->
        <dependency>
            <groupId>org.apache.shardingsphere</groupId>
            <artifactId>sharding-jdbc-spring-boot-starter</artifactId>
            <version>4.0.0-RC1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.shardingsphere</groupId>
            <artifactId>sharding-jdbc-spring-namespace</artifactId>
            <version>4.0.0-RC1</version>
        </dependency>

yml格式只分表，不分库的写法

Spring:
  shardingsphere:
    datasource:
      names: master
      master:
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        url: jdbc:mysql://197.1.26.138:53306/test?serverTimezone=Asia/Shanghai&useSSL=false&allowMultiQueries=true
        username: root
        password: root
#数据分表规则
#指定所需分的表
    sharding:
      tables:
        test_user:
          actual-data-nodes: master.test_user$->{0..2}
          table-strategy:
            inline:
              sharding-column: night_id
              algorithm-expression: test_user$->{night_id % 3}
    props:
      sql:
        show: false

properties分库分表的写法

#指定mybatis信息
mybatis.config-location=classpath:mybatis-config.xml

#数据库
spring.shardingsphere.datasource.names=master0,slave0

spring.shardingsphere.datasource.master0.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.master0.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.master0.url=jdbc:mysql://localhost:3306/master?characterEncoding=utf-8
spring.shardingsphere.datasource.master0.username=root
spring.shardingsphere.datasource.master0.password=123456

spring.shardingsphere.datasource.slave0.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.slave0.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.slave0.url=jdbc:mysql://localhost:3306/slave?characterEncoding=utf-8
spring.shardingsphere.datasource.slave0.username=root
spring.shardingsphere.datasource.slave0.password=root

#数据分表规则
#指定所需分的表
spring.shardingsphere.sharding.tables.tab_user.actual-data-nodes=master0.tab_user$->{0..1}
#指定主键
spring.shardingsphere.sharding.tables.tab_user.table-strategy.inline.sharding-column=id
#分表规则为主键除以2取模
spring.shardingsphere.sharding.tables.tab_user.table-strategy.inline.algorithm-expression=tab_user$->{id % 2}

# 读写分离
spring.shardingsphere.masterslave.load-balance-algorithm-type=round_robin
spring.shardingsphere.masterslave.name=ms
#这里配置读写分离的时候一定要记得添加主库的数据源名称 这里为master0
spring.shardingsphere.sharding.master-slave-rules.master0.master-data-source-name=master0
spring.shardingsphere.sharding.master-slave-rules.master0.slave-data-source-names=slave0

#打印sql
spring.shardingsphere.props.sql.show=true