发送请求后重定向页面[快递4] [英] Redirect page after post request [Express 4]

问题描述

  / ** 
 * @api {post} / logout从系统退出
 * @apiName注销
 * @apiGroup登录
 * / 
 router.post（/ logout，function（req，res）{
 req.logout（）; 
 req.session.destroy（）; 
 return res .redirect（/）; 
}）;我已经读过 Node.js Express：如何在处理帖子请求后重定向页面，但无法弄清答案。 / p> 
 
 
我最近更改了注销到POST而不是GET。这样做后，重定向不工作
  POST /注销307 4.912 ms  -  36 
 POST / 302 3.922 ms -  23 
 GET / 200 7.519 ms  -   -  
  
我可以在客户端手动，但我想知道如何在服务器端这样做。这是可能吗？
 
 
 
 客户端 
 
 
 
 HTML 
 < a href =javascript :;的onclick = 退出（）; > 
  
 JS 
  function logOut（）{
 $ .post（/ logout）; 
} 
  
 
 
解决方案
 Javascript生成了您的 $。post（）的Ajax调用。 Ajax发送请求，得到响应。一个ajax调用本身并不会改变页面位置。这是Ajax调用的特征。 
 
 
 
当浏览器加载新页面时，重定向工作，服务器会将其更改为正在加载的新页面，而不是当浏览器发送Ajax呼叫。 
 
 
 
当然，您可以使用客户端JavaScript来决定从客户端重定向到您的 $。post（） code>完成。您甚至可以从 $。的回复。post（）成为新的位置，然后您的客户端Javascript可以设置 window.location 到该新URL。
  function logOut（）{
 $ .post（注销）然后（function（data）{
 window.location = data.redirectUrl; 
}）; 
} 
  
而且，在服务器上：
  router.post（/ logout，function（req，res）{
 req.logout（）; 
 req.session.destroy ）; 
 res.send（{err：0，redirectUrl：/}）; 
}）; 
  
 
/**
 * @api {post} /logout Logout from system
 * @apiName Logout
 * @apiGroup Login
 */
router.post("/logout", function (req, res) {
  req.logout();
  req.session.destroy();
  return res.redirect("/");
});
I've read Node.js Express : How to redirect page after processing post request? but could not figure out the answer.


I recently changed logout to POST instead of GET. After doing so, redirect does'nt work
POST /logout 307 4.912 ms - 36
POST / 302 3.922 ms - 23
GET / 200 7.519 ms - -
I can manually do it on client side, but I want to know how to do it on server side as well. Is this possible?

CLIENT

HTML
<a href="javascript:;" onclick="logOut();">
JS
 function logOut() {
        $.post("/logout");
    }

解决方案
There are no redirects from a Javascript generated Ajax call which your $.post() is.  Ajax sends a request, gets a response.  An ajax call by itself does not change the page location at all.  That's a characteristic of Ajax calls.  

Redirects work when the browser is loading a new page and the server tells it to change what page it is loading to a new source, not when the browser just sends an Ajax call.  

You can, of course, use your client-side Javascript to decide to redirect from the client side after your $.post() finishes.  You could even have the response from the $.post() be the new location and your client-side Javascript could then just set window.location to that new URL.
function logOut() {
    $.post("/logout").then(function(data) {
        window.location = data.redirectUrl;
    });
}
And, on the server:
router.post("/logout", function (req, res) {
  req.logout();
  req.session.destroy();
  res.send({err: 0, redirectUrl: "/"});
});


                        
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