关于批量更新数据的方法

1.Statement:提供addBatch(String sql) 和 excuteBatch()方法批量更新数据

Statement smt=....

               smt.addBatch("insert into talbename...");

               smt.addBatch("sql 语句2");

               smt.addBatch("sql 语句3);

                ................

               smt.executeBatch();                 //批量执行

2    使用PreparedStatement 

                PreparedStatement   psmt=conn.perparedStatement("insert into tablename values(?)");

                               psmt.setString(0,"aaa");

                              psmt.addBatch();

                            psmt.setString(0,"bbb");

                             psmt.addBatch(0,"aaa");

                             ......................

                             psmt.executeBatch();