初级阶段的学习

ResultSet rs=null;
 try{
  pStmt=con.prepareStatement("select * from messageadmin.usertable where name=?");
  pStmt.setString(1, name);
  rs=pStmt.executeQuery();
  if (rs.next()){
   System.out.println("chenjian");
   messageBeans.add(new MessageBean(rs.getString("title"),rs.getString("content"),rs.getString("dateandtime"),rs.getString("repeater"),rs.getString("email"),rs.getString("QQnum")));
  }
 }catch(Exception e){
  System.out.println("chucuo");
  e.printStackTrace();
 }finally{
 
  pStmt.close();
  rs.close();
  con.close();
  return messageBeans;
 }
}

这样一段语句，查询oracle数据库，明明有一条用户名为wanghai,密码为wanghai的记录，却总是说找不到．

messageBeans 总是为空，这是怎么回事呢