ajax servlet端小问题

说是小问题。。。调试了一天气死了

 

代码

   
     

    
      
    
      protected
    
       
    
      void
    
       doPost(HttpServletRequest request, HttpServletResponse response) 
    
      throws
    
       ServletException, IOException {
 String username 
    
      =
    
       request.getParameter(
    
      "
    
      username
    
      "
    
      );
 String password 
    
      =
    
       request.getParameter(
    
      "
    
      password
    
      "
    
      );
 response.setContentType( 
    
      "
    
      text/html;utf-8
    
      "
    
      );
 response.setCharacterEncoding(
    
      "
    
      utf-8
    
      "
    
      );
 PrintWriter writer 
    
      =
    
       response.getWriter();
 
 
    
      if
    
      (
    
      null
    
       
    
      !=
    
       username 
    
      &&
    
       
    
      null
    
       
    
      !=
    
       password) {
 
    
      if
    
      (username.equals(
    
      ""
    
      ) 
    
      ||
    
       password.equals(
    
      ""
    
      )) {
 writer.println(
    
      "
    
      don't post empty value
    
      "
    
      );
 } 
    
      else
    
       {
 
 
    
      if
    
      (username.equalsIgnoreCase(
    
      "
    
      xc
    
      "
    
      ) 
    
      &&
    
       password.equalsIgnoreCase(
    
      "
    
      123
    
      "
    
      )) {
 writer.println(
    
      "
    
      ok
    
      "
    
      );
 } 
    
      else
    
       {
 writer.println(
    
      "
    
      error
    
      "
    
      );
 } 
 }
 response.flushBuffer();
 }
 }
   
     

很简单的提交，返回

ok后面直接多了个%0D%0A，

今天才知道，println啊…………………………

全部改成print就对了。。。