javascript Java EE servlet页面重定向+向控制器发送数据

5 月，2 周 Questions & Answers 1055

我正在尝试从Servlet进行页面重定向，但它不起作用我不知道为什么，如果有人能帮助我，我将不胜感激，我花了2个小时搜索，但没有得到结果

JS代码

$("#login_form_submit").click(function(){
var form = $('#login_form');
    $.ajax({
            type: "Post",
            url: "AccountServlet",
            data: form.serialize(),
            dataType: "json",

            //if received a response from the server
            success: function( data, textStatus, jqXHR) {
                 if(data.success){
                    $("#ajaxResponse").html("");
                    console.log(data);

                    if (data.User.role == 1){
                        main.user = data.User; 
                        //window.location.href = "Student_home.jsp";
                    }
                 } 
                 //display error message
                 else {
                    $("#ajaxResponse").html("<div><b>Something goes wrong check your email or password</b></div>");

                 }
            },

            //If there was no response from the server
            error: function(jqXHR, textStatus, errorThrown){
                 $("#ajaxResponse").html("<div><b>Something goes wrong check your email or password</b></div>");
                 $("#ajaxResponse").html(jqXHR.responseText);
            },

            //capture the request before it was sent to server
            beforeSend: function(jqXHR, settings){
                //disable the button until we get the response
                $('#login_form_submit').attr("disabled", true);
            },

            //this is called after the response or error functions are finsihed
            //so that we can take some action
            complete: function(jqXHR, textStatus){
                //enable the button 
                $('#login_form_submit').attr("disabled", false);
            }

        });        

});

servlet代码

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    PrintWriter out = response.getWriter();
    response.setContentType("text/html");
    response.setHeader("Cache-control", "no-cache, no-store");
    response.setHeader("Pragma", "no-cache");
    response.setHeader("Expires", "-1");

    response.setHeader("Access-Control-Allow-Origin", "*");
    response.setHeader("Access-Control-Allow-Methods", "POST");
    response.setHeader("Access-Control-Allow-Headers", "Content-Type");
    response.setHeader("Access-Control-Max-Age", "86400");


    String userName = request.getParameter("userName");
    String password = request.getParameter("password");
    DatabaseWrapper context = new DatabaseWrapper();
    User user = context.Check_login(userName, password);
    session.current_user = user;
    Gson gson = new Gson(); 
    JsonObject myObj = new JsonObject();

    if (user == null){
        myObj.addProperty("success", false);
        out.println(myObj.toString());
    }else if (user instanceof Student){
        JsonElement userObject = gson.toJsonTree((Student)user);
        myObj.addProperty("success", true);
        myObj.add("User", userObject);
        out.println(myObj.toString());

        out.close();
        //response.setStatus(HttpServletResponse.SC_FOUND); 
        response.sendRedirect("Student_home.jsp");
        return;


    }

我也试着用

RequestDispatcher dispatcher = request.getRequestDispatcher("/Student_home.jsp");
        dispatcher.forward(request, response);

但是没有成功，没有任何建议

只使用javascript对我来说很好，但我需要从servlet重定向

我在javascript中使用了这一行

window.location.href = "Student_home.jsp";

伙计们，我找到了答案，但出于某种原因，我无法在解决方案中发布它

问题是我正在重定向ajax调用，没有办法阻止它，这个想法是基于jquery成功中的响应，我将使用另一个调用重定向，该调用创建表单元素并以自然方式提交它

我的解决方案：

function Redirect (servlet , method_type){
var form = $(document.createElement('form'));
$(form).attr("action", servlet);
$(form).attr("method", method_type);
$(form).css("display", "none");
form.appendTo( document.body );
$(form).submit();

}

完成了，谢谢大家

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javascript Java EE servlet页面重定向+向控制器发送数据

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