spring-boot 整合 shardingsphere-jdbc、mybatis-plus 数据分片

整合Spring Boot和ShardingSphere-JDBC以及MyBatis-Plus进行数据分片的示例代码如下：

1. 在pom.xml中添加依赖：

<dependencies>
    <!-- ShardingSphere JDBC -->
    <dependency>
        <groupId>org.apache.shardingsphere</groupId>
        <artifactId>shardingsphere-jdbc-core-spring-boot-starter</artifactId>
        <version>您的ShardingSphere版本</version>
    </dependency>
    <!-- MyBatis-Plus -->
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>您的MyBatis-Plus版本</version>
    </dependency>
    <!-- 数据库驱动，以MySQL为例 -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>您的数据库驱动版本</version>
    </dependency>
</dependencies>

2. 在application.yml中配置ShardingSphere和MyBatis-Plus：

spring:
  shardingsphere:
    datasource:
      names: ds0,ds1
      ds0:
        type: com.zaxxer.hikari.HikariDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        jdbc-url: jdbc:mysql://localhost:3306/ds0
        username: root
        password:
      ds1:
        type: com.zaxxer.hikari.HikariDataSource
        driver-class-name: com.mysql.cj.jdbc.Driver
        jdbc-url: jdbc:mysql://localhost:3306/ds1
        username: root
        password:
    sharding:
      tables:
        t_order:
          actual-data-nodes: ds$->{0..1}.t_order_$->{0..1}
          table-strategy:
            inline:
              sharding-column: order_id
              algorithm-expression: t_order_$->{order_id % 2}
    props:
      sql:
        show: true
 
mybatis-plus:
  mapper-locations: classpath:/mapper/*.xml
  type-aliases-package: com.example.demo.model

3. 创建实体类和Mapper接口：

// 实体类 TOrder.java
public class TOrder {
    private Long orderId;
    // 省略其他字段和getter/setter方法
}
 
// Mapper接口 TOrderMapper.java
@Mapper
public interface TOrderMapper extends BaseMapper<TOrder> {
    // 使用MyBatis-Plus提供的基本CRUD方法
}

4. 配置MyBatis-Plus分页插件：

@Configuration
public class MyBatisPlusConfig {
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        return new PaginationInterceptor();
    }
}

5. 使用Shardi