Why the response.sendRedirect() in servlet doesn't work after receiving the post request of JQuery?

Question

In the blog-edit.html, JQuery was used to send the post request to the sever side(java servlet).

$("#btn").click(function() {
                    $.post("/blog/handler",{"content":$('#textarea').val()},
                    function(data){
                        alert("Data Loaded: " + data);
                        if(data.toString().length>1){
                            alert("Saved!")
                        }else{
                            alert("Failed!")
                        }
                    })

In the server side:

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            String content = request.getParameter("content");
            System.out.println(content);

            response.sendRedirect("/blog/list");
            return;
    }

What I saw is the server side is printing the content from the html, and the alert window pops up to say "Saved!". But the redirect function doesn't work

After searching I have no choice but to use jquery to redirect:

if(data.toString().length>1){
                            alert("Saved!")
                            window.location.replace("/blog/list")
                        }

it works, but it's not what i want

please help

Is the servlet invoked? Do you see your System.out.println(content)? — jeff, May 23 '12 at 02:29

score 7 · Answer 1 · edited May 23 '17 at 11:48

7

While using ajax. you can not execute server side redirect.

However, there are better way how to redirect on client in such a scenario.

See Here

edited May 23 '17 at 11:48

Community

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1

answered May 23 '12 at 02:21

Raab

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While using ajax. you can not execute server side redirect. Why?! – macemers May 29 '12 at 03:42
that is how it is. You need to read something about it yourself. before using ajax. – Raab May 29 '12 at 04:40

Why the response.sendRedirect() in servlet doesn't work after receiving the post request of JQuery?

1 Answers1