Question

我有一个简单的登录页面，我正在使用Ajax来检查用户凭据。如果为true，它应该重定向到另一个页面，否则它应该抛出一条错误消息。

<script type="text/javascript">
  function btnSignIn(){
      var uName = document.getElementById("uName").value;
      var pass = document.getElementById("pass").value;
       $.ajax({
           url:   "/orgNgo/SignIn",
           type: "POST",
           data: {
               "uName" : uName,
               "pass" : pass
           }  ,
           success:function() {
               //... your other code
               //location.reload(); //reload the page on the success
               document.getElementById("lblError").innerHTML="Error";
           }  

       });
  }
  </script>
<table>
        <tr>
            <td>
            UserName:
            </td>
            <td>
            <input type="text" id="username" name="uName"/>
            </td>
            <td>
            <label style="visibility: hidden;">required</label>
            </td>
        </tr>
         <tr>
           <td>
            Password:
            </td>
            <td>
            <input type="text" id="password" name="pass"/>
            </td>
            <td>
            <label style="visibility: hidden;">required</label>
            </td>
        </tr>
         <tr>
            <td colspan="3">
            <input type="button" onclick="btnSignIn()"  value="Submit"/>
            </td>
        </tr>
         <tr>
            <td colspan="3">
            Not a member yet? <a href="/orgNgo/SignUp">SignUp</a>
            </td>
        </tr>
    </table>

Servlet代码

    if(repeatUsername){//if user name and password matches it comes to this loop
                    stmt.close();
                    c.close();
                    session.setAttribute("lib", uName);
  request.getRequestDispatcher("/user/UserHome.jsp").forward(request,response);
                     //not working
                }
                else{

                    String loginError = "UserName or Password is wrong";
                     request.setAttribute("loginError", loginError);
                    response.setContentType("text/plain");
                    response.setCharacterEncoding("UTF-8");
                    response.getWriter().write(String.valueOf(loginError));
    //not working
                }

如果用户凭据为true，则页面不会被重定向。当我调试代码时，我发现它在控制台中反映出来。如果用户凭据与之匹配，则loginError String不会传递给Ajax的成功函数。我已经练习Ajax一个星期了，但通常它只是jsp到servlet但是我在这里因为它是双向的而被卡住了。

提前感谢您的帮助。

Answer 1

success: function() {
    window.location = "another page";
}

将重定向到另一个页面并且由你来检查credencial

如何在ajax调用期间重定向到另一个页面

1 个答案: