請教jd framework，錯誤？

// 在此輸入java程式碼
String username = request.getParameter("j_username");
     String password = request.getParameter("j_password");
     if(username != null && password != null)
     {
         Debug.logVerbose("[JdonFramework] request from login.jsp", module);
         if(request.getParameter("rememberMe") != null)
         {
             RequestUtil.setCookie(response, "rememberMe", "true", "/");
             RequestUtil.setCookie(response, "username", StringUtil.encodeString(username), "/");
             RequestUtil.setCookie(response, "password", StringUtil.encodeString(password), "/");
         }
     }
 else
     {
//.......其它         
}
String route = (new StringBuilder()).append("j_security_check?j_username=").append(username).append("&j_password=").append(password).toString();
response.sendRedirect(response.encodeRedirectURL(route.trim()));

<p class="indent">