可更新resultset

可更新resultset，效率低

//標準獲取Statement 方法
Statement stmt = (Statement) conn.createStatement();

//獲取可更新ResultSet
Statement stmt = (Statement) conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);

 

long s = System.currentTimeMillis();
while(rs.next()){
//調用其他的update方法
//  updateDate(conn,rs.getString("id"));

    rs.updateString("age", rs.getString("id"));
    rs.updateRow(); // updates the row in the data source
    System.out.println(rs.getString("id"));
}
long e = System.currentTimeMillis();