【实践】jdbc批量插入数据

参考文献：http://my.oschina.net/u/1452675/blog/203670

http://superjavason.iteye.com/blog/255423

 /*测试批量写入数据*/
         long start = System.currentTimeMillis();
         DaoRecord daoRecord = new DaoRecord();
         List<T> list = new ArrayList<T>();
         for(int i = 1; i <= 1000; i++){
             for(int j = 1; j <= 1000; j++){
                 T t = new T();
                 t.setI(i);
                 t.setJ(j);
                 list.add(t);
             }
         }
         daoRecord.InsertBatch(list);
         System.out.println("耗时：" + (System.currentTimeMillis()-start)+"毫秒");

 //批量写入数据测试
     public void InsertBatch(List<T> list){
         String sql = "insert into t(go,back) values(?,?)";
         DBHelper dbh = new DBHelper(sql);
         Connection conn = dbh.returnConn();
         try {
             conn.setAutoCommit(false);//注意此句一定要为false，原因见第一篇参考文献
             PreparedStatement ps = conn.prepareStatement(sql);
             for(int i = 0; i < list.size(); i++){
                 ps.setInt(1, list.get(i).getI());
                 ps.setInt(2, list.get(i).getJ());
                 ps.addBatch();
                 if (i % 10000 == 0){
                      ps.executeBatch();
                      conn.commit();
                  }
             }
             ps.executeBatch();
             conn.commit();
             conn.close();
         } catch (SQLException e) {
             // TODO 自动生成的 catch 块
             e.printStackTrace();
         }
     }

数据表：

实验结果: