java 批量插入数据 到数据库

//大数据插入方法
		String sql = "insert into T_DR_RF(CUSTOMER_CODE,RFID_TAG) values(?,?)";
		Connection connection =db.getConnection();
		connection.setAutoCommit(false);
		PreparedStatement ps = connection.prepareStatement(sql);
		for (Map<String, Object> map : coll) {
			String p1 = Tools.toString(map.get("customerCode"));
			String p2 = Tools.toString(map.get("rfidTag"));
			ps.setString(1, p1);
			ps.setString(2, p2);
			ps.addBatch();
		}

		ps.executeBatch();
		connection.commit();
		System.out.println("导入完成");//大数据插入方法
		String sql = "insert into T_DR_RF(CUST