java改單個插入爲批量插入

單條insert into table value() 13W數據須要執行7小時

變成inert into table value(),(),(),(),()

inert into table value(),(),(),(),()

inert into table value(),(),(),(),()

這樣，效率節省N倍 ，13W數據只須要3分鐘

@Override
	public boolean addBRDforList(List<AiResultBai> data) {
		boolean flag=false;
		String sql="insert into `ai_result_baidu`(`id`,`data_base_id`,`sentiment`,`positive_prob`,`negative_prob`,`create_time`) values ";
				//+ "values ( NULL,?,?,?,?,?)";
		List<String> sbList = new ArrayList<>();//存儲sql
		StringBuffer sb = new StringBuffer();
		DataBaseDao dbd=new DataBaseDaoImpl();
		for(int i = 0 ; i < data.size() ; i++) {
			//對數據進行分析，並得出base_id
			if(i==0 || i%10==0) {
				if (sb.toString().length() > 0) {//第一次不會進來
					sbList.add(sb.toString());
				}
				sb=new StringBuffer();
				sb.append(sql).append("(NULL,"+data.get(i).getData_base_id()+","+data.get(i).getSentiment()+","+data.get(i).getPositive_prob()+","+data.get(i).getNegative_prob()+",'"+data.get(i).getCreate_time()+"'"+")");
			}else if(i == data.size() -1) {
				sb.append(","+"(NULL,"+data.get(i).getData_base_id()+","+data.get(i).getSentiment()+","+data.get(i).getPositive_prob()+","+data.get(i).getNegative_prob()+",'"+data.get(i).getCreate_time()+"'"+")");
				sbList.add(sb.toString());
			}else {
				sb.append(","+"(NULL,"+data.get(i).getData_base_id()+","+data.get(i).getSentiment()+","+data.get(i).getPositive_prob()+","+data.get(i).getNegative_prob()+",'"+data.get(i).getCreate_time()+"'"+")");
			}
	
	}
		System.out.println(sbList.size());
		int j=0;
		for (String string : sbList) {
			j++;
			System.out.println(j+"=="+"sql====="+string);
			if(this.getconnection()) {
				this.executeUpdate1(string);
			
			}
			this.clossconnection();
		}
		if(sbList.size()==j) {
			flag=true;
		}

		
		System.out.println("共有Sql:"+sbList.size()+"條");
		return flag;
	}