Java基于ShardingSphere实现分库分表的实例详解

<dependency>
   <groupId>org.apache.shardingsphere</groupId>
    <artifactId>sharding-jdbc-spring-boot-starter</artifactId>
    <version>4.0.0-RC2</version>
</dependency>

@Data
public class User {
    private Integer id;
    private String name;
    private Integer age;
}

@Mapper
public interface UserMapper extends BaseMapper<User> {

}

spring:
  shardingsphere:
    datasource:
      #数据库分库名
      names: ds0,ds1
      ds0:
        #type为数据源，如果是Druid数据库连接池，可以去改
        type: com.zaxxer.hikari.HikariDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        jdbc-url: jdbc:mysql://localhost:3306/test0?characterEncoding=utf-8&serverTimezone=UTC
        username: root
        password: root
      ds1:
        type: com.zaxxer.hikari.HikariDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        jdbc-url: jdbc:mysql://localhost:3306/test1?characterEncoding=utf-8&serverTimezone=UTC
        username: root
        password: root
    # 分片规则
    sharding:
      default-database-strategy:
        inline:
          algorithm-expression: ds$->{id%2}
          sharding-column: id
      tables:
        user:
          actual-data-nodes: ds${0..1}.user_${0..2}
          table-strategy:
            inline:
              algorithm-expression: user_${age%2}
              sharding-column: age
    # 在日志中SQL语句
    props:
      sql:
        show: true

@SpringBootTest
class DemoApplicationTests {
    @Resource
    private UserMapper userMapper;

    @Test
    void contextLoads() {
        User user = new User();
        user.setId(1);
        user.setName("666");
        user.setAge(16);
        userMapper.insert(user);
    }

	@Test
    void contextLoads2() {
        User user = new User();
        user.setId(2);
        user.setName("666");
        user.setAge(17);
        userMapper.insert(user);
    }
}