jQuery Ajax在PhantomJS中不起作用

问题描述

此代码有什么问题?

我正在尝试使用PhantomJS的jQuery ajax发送发帖请求，但是除了" post:"

I'm trying to send a post request using jQuery ajax from PhantomJS, but it returns nothing besides "post:"

var webPage = require('webpage');
var page = webPage.create();
page.includeJs('http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js', function() {
    console.log('post:');
    $.post("http://httpbin.org/post", function(data) {
        console.log(data);
    });
});

推荐答案

PhantomJS具有两个上下文. page.includeJs()指示DOM上下文(页面上下文)加载给定的JavaScript文件.回调完成后将被调用.这意味着jQuery仅在页面上下文中可用，而不会在页面上下文之外可用.您可以通过page.evaluate()访问页面上下文.

PhantomJS has two contexts. page.includeJs() instructs the DOM context (page context) to load the given JavaScript file. The callback is called when it is done. It means jQuery will only be available in the page context and never outside of it. You get access to the page context through page.evaluate().

示例:

page.onConsoleMessage = function(msg){
    console.log("remote> " + msg);
};

page.includeJs('http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js', function() {
    page.evaluate(function(){
        console.log('post:');
        $.post("http://httbpin.org/post", function(data) {
            console.log(data);
        });
    });
    setTimeout(function(){
        // don't forget to exit
        phantom.exit();
    }, 2000);
});

您必须使用--web-security=false命令行选项运行PhantomJS，否则由于跨域限制，它将无法发送请求:

You will have to run PhantomJS with the --web-security=false commandline option, otherwise it won't be able to send the request because of cross-domain restrictions:

phantomjs --web-security=false script.js

请注意，page.evaluate()已沙盒化.请完整阅读文档.

Please note that page.evaluate() is sandboxed. Please read the documentation fully.

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