在PhantomJS中登录后如何在会话中打开特定的URL [英] How to open a specific URL in a session after login in PhantomJS

问题描述

我正在使用PhantomJS登录到Facebook.这是我的代码:

I'm loging in to facebook with PhantomJS. Here is my code:

var page = require('webpage').create();
phantom.cookiesEnabled = true;
page.open("http://www.facebook.com/login.php", function(status) {

  if (status === "success") {
    page.evaluate(function() {
        document.getElementById("email").value = "email";
        document.getElementById("pass").value = "pass";
        document.getElementById("loginbutton").click();
    });
    window.setTimeout(function() {
       page.render("page.png");
       phantom.exit();
    }, 5000);
  }
});

page.open("https://www.facebook.com/myprofil", function(status) {

    window.setTimeout(function() {
       page.render("profil.png");
       phantom.exit();
    }, 5000);

});

到目前为止，登录过程可以正常进行，但是例如在同一会话中，我没有找到访问我的个人资料URL的正确方法.我尝试再次使用page.open，但是我一直在获取请求页面的登录表单，好像以前从未登录过一样.在您的会话中进行导航的正确方法是什么?

so far so good the login process goes fine, but I didn't find the right method to visit my profile URL for example in the same session. I tried to use page.open again, but I keep getting the login form with the page I requested as if I never logged in before. What's the proper way to navigate within your session?

推荐答案

page.open是异步函数.打开页面需要一些时间.完成后，将调用回调.如果连续两次调用page.open而不等待第一个调用完成，则实际上是在覆盖第一个请求，因此将仅执行第二个请求.

page.open is an asynchronous function. It takes some time to open a page. When it's done, the callback is called. If you're calling page.open twice in a row without waiting for the first call to be finished, you're essentially overwriting the first request, so only the second one will be executed.

您需要嵌套通话:

page.open("http://www.facebook.com/login.php", function(status) {
    if (status === "success") {
        page.evaluate(function() {
            document.getElementById("email").value = "email";
            document.getElementById("pass").value = "pass";
            document.getElementById("loginbutton").click();
        });
        window.setTimeout(function() {
           page.render("page.png");
           page.open("https://www.facebook.com/myprofil", function(status) {

                window.setTimeout(function() {
                   page.render("profil.png");
                   phantom.exit();
                }, 5000);
            });
        }, 5000);
    }
});

请记住，一旦调用phantom.exit()，PhantomJS就会退出.因此，当脚本应该结束时，您应该只有一个phantom.exit().

Remember that PhantomJS exits as soon as phantom.exit() is called. So you should probably have a single phantom.exit() when your script is supposed to end.

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