SpringBoot与ShardingSphere5.2.1整合

pom:

        
            org.apache.shardingsphere
            shardingsphere-jdbc-core-spring-boot-starter
            5.2.1
        

yml:

spring:
  # 分表配置
  shardingsphere:
    datasource:
      names: ds0,ds1

      ds0:
        url: jdbc:dm://localhost:5236?schema=xxx0&zeroDateTimeBehavior=convertToNull&useUnicode=true&characterEncoding=utf-8
        username: SYSDBA
        password: SYSDBA
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: dm.jdbc.driver.DmDriver
      ds1:
        url: jdbc:dm://localhost:5236?schema=xxx1&zeroDateTimeBehavior=convertToNull&useUnicode=true&characterEncoding=utf-8
        username: SYSDBA
        password: SYSDBA
        type: com.alibaba.druid.pool.DruidDataSource
        driver-class-name: dm.jdbc.driver.DmDriver
    props:
      sql-show: true
    rules:
      sharding:
        sharding-algorithms:
          table-inline:
            type: TableShardingAlgorithm5 #自定义分表算法
            props:
              strategy: STANDARD
              algorithm-class-name: com.cru.shardingalgorithm.TableShardingAlgorithm5
        tables:
          POWER_STATION_DATA:
            actualDataNodes: ds0.xxx_$->{2022..2023}
            table-strategy:
              standard:
                sharding-column: data_time
                sharding-algorithm-name: table-inline

java:

package com.cru.shardingalgorithm;

import cn.hutool.core.collection.CollectionUtil;
import com.google.common.collect.Range;
import lombok.extern.slf4j.Slf4j;
import org.apache.shardingsphere.sharding.api.sharding.standard.PreciseShardingValue;
import org.apache.shardingsphere.sharding.api.sharding.standard.RangeShardingValue;
import org.apache.shardingsphere.sharding.api.sharding.standard.StandardShardingAlgorithm;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Properties;

@Slf4j
public class TableShardingAlgorithm5 implements StandardShardingAlgorithm{
    DateTimeFormatter pattern = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
    private Properties props = new Properties();
    @Override
    public String getType() {
        return "TableShardingAlgorithm5";
    }

    @Override
    public String doSharding(Collection availableTargetNames, PreciseShardingValue shardingValue) {
        log.info("[分表算法]");

        // 真实节点
        availableTargetNames.stream().forEach((item) -> {
            log.info("[存在的表<{}>]", item);
        });
        log.info("[表名<{}> 列名<{}>]", shardingValue.getLogicTableName(), shardingValue.getColumnName());

        //精确分片
        String time = shardingValue.getValue();
        log.info("[分表列的值<{}>]", time);
        // 根据当前日期来分库分表
        String tbName = shardingValue.getLogicTableName() + "_";
        String year = time.split(" ")[0];
        String date = "";
        try {
            LocalDate d = LocalDate.parse(time);
            date = d.getYear()+"";
        } catch (Exception e) {
            LocalDateTime d = LocalDateTime.parse(time, pattern);
            date = d.getYear()+"";
        }
        log.info("[year<{}>]", year);
        tbName = tbName + date;
        log.info("[分片确定的表名<{}>]", tbName);

        for (String each : availableTargetNames) {
            if (each.equals(tbName)) {
                return each;
            }
        }
        throw new IllegalArgumentException();
    }

    @Override
    public Collection doSharding(Collection availableTargetNames, RangeShardingValue shardingValue) {
        log.info("[分表算法]");

        // 真实节点
        availableTargetNames.stream().forEach((item) -> {
            log.info("[存在的表<{}>]", item);
        });
        log.info("[表名<{}> 列名<{}>]", shardingValue.getLogicTableName(), shardingValue.getColumnName());

        //精确分片
        Range valueRange = shardingValue.getValueRange();
        String startTime = valueRange.lowerEndpoint();
        String endTime = valueRange.upperEndpoint();
        String startYear = "";
        String endYear = "";
        String tbName = shardingValue.getLogicTableName() + "_";
        try {
            LocalDate startDate = LocalDate.parse(startTime);
            LocalDate endDate = LocalDate.parse(endTime);
            startYear = startDate.getYear()+"";
            endYear = endDate.getYear()+"";
        } catch (Exception e) {
            LocalDateTime startDate = LocalDateTime.parse(startTime, pattern);
            LocalDateTime endDate = LocalDateTime.parse(endTime, pattern);
            startYear = startDate.getYear()+"";
            endYear = endDate.getYear()+"";
        }
        List results = new ArrayList<>();
        for (String availableTargetName : availableTargetNames) {
            if(availableTargetName.equals(tbName+startYear)){
                results.add(tbName+startYear);
            }
            if(availableTargetName.equals(tbName+endYear)){
                results.add(tbName+endYear);
            }
        }
        log.info("[分片确定的表名<{}>]", CollectionUtil.join(results,","));
        return results;
    }

    @Override
    public Properties getProps() {
        return props;
    }

    @Override
    public void init(Properties properties) {

    }
}

需要注意的是，shardingSphere全版本不支持substring语法，请使用substr替换