SpringBoot集成Sharding-jdbc（水平分表）

为了在Spring Boot项目中整合Sharding-JDBC进行数据库的水平分表，你需要按照以下步骤操作：

1. 在pom.xml中添加Sharding-JDBC的依赖：

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

2. 在application.yml或application.properties中配置Sharding-JDBC的相关配置：

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

3. 在Spring Boot的配置类中添加Sharding-JDBC的Bean：

@Configuration
public class ShardingJdbcConfig {
 
    @Bean
    public DataSource dataSource() {
        // 配置sharding-jdbc的DataSource，可以使用Spring Boot的配置
        return ShardingDataSourceFactory.createDataSource(getShardingRuleConfig(), getDataSourceMap(), new ConcurrentHashMap<>(), new Properties());
    }
 
    private Map<String, DataSource> getDataSourceMap() {
        // 配置数据源
        Map<String, DataSource> result = new HashMap<>();
        result.put("ds0", ...); // 初始化ds0数据源
        result.put("ds1", ...); // 初始化ds1数据源
        return result;
    }
 
    private ShardingRuleConfiguration getShardingRuleConfig() {
        // 配置分片规则
        ShardingRuleConfiguration shardingRuleConfig = new ShardingRuleConfiguration();
        // ... 配置分表规则和键生成器等
        return shardingRuleConfig;
    }
}

4. 在你的Service或Repository中使用Sharding-JDBC提供的DataSource进行数据库操作：

@Service
public class YourService {
 
    @Resource
    private DataSource dataSource;
 
    public void insertOrder(Order order) {
        try (Connection conn = dataSource.getConnection();
             PreparedStatement pstmt = conn.prepareStatement("INSERT INTO t_order (order_id, user_id, status) VAL