瞪起

这边资源很多看看http://www.flatws.cn

直接在数据库进行验证！

可不可以说详细点哦。。比如代码，或者是验证之后如果不存在该用户返回什么呢？？null

 public User findUser(String uName,String uPass) {
Connection conn = null;  
  PreparedStatement pstmt = null;  
   ResultSet rs = null;  
  String sql = "select * from TBL_USER where uName=? and uPass = uPass";
User user = null;
try {
  conn = this.getConn();
  pstmt = conn.prepareStatement(sql);  
  pstmt.setString(1, uName);  
  rs = pstmt.executeQuery();  
while( rs.next() ) {
user = new User();
   user.setUName( rs.getString("uName") );
   user.setUPass( rs.getString("uPass") );
}
} catch (Exception e) {
  e.printStackTrace();  
  } finally {try{
   if(rs != null)rs.close()}  catch (Exception e) {
  } finally {try{
   if(pstmt != null)pstmt.close()}catch (Exception e) {
  e.printStackTrace();
  } finally {try{
   if(conn != null)conn.close()}catch(SQLException e){   conn.close();}
}
return user;
}
user是否为空来判断是否登陆成功


万分感谢大虾