sharding JDBC 不支持批量导入解决方法

可以通过上下文获取事务管理器，然后取消每次的事务提交，完成后进行事务提交。

package com.ydmes.service.impl.log;

import com.ydmes.domain.entity.log.BarTraceBackLog;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.stereotype.Component;
import org.springframework.transaction.TransactionDefinition;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.DefaultTransactionDefinition;

import java.util.List;

@Component
public class BarTraceBackLogBatchServiceImpl implements ApplicationContextAware {
    private static ApplicationContext applicationContext;

    public void batchInsertBarTraceBackLogs(List<BarTraceBackLog> barTraceBackLogs) {
        DefaultTransactionDefinition definition = new DefaultTransactionDefinition();
        definition.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRES_NEW);
        definition.setIsolationLevel(TransactionDefinition.ISOLATION_READ_COMMITTED);

        DataSourceTransactionManager transactionManager = (DataSourceTransactionManager)
                applicationContext.getBean("shardingTransactitonManager");
        TransactionStatus transactionStatus = transactionManager.getTransaction(definition);

        for (BarTraceBackLog barTraceBackLog : barTraceBackLogs) {
            //UserDao有create方法，单条插入
            applicationContext.getBean(BarTraceBackLogServiceImpl.class).insertSelective(barTraceBackLog);
        }
        transactionManager.commit(transactionStatus);
    }


    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }
}