我正在尝试使用phantomJS (顺便说一句,这是一个多么棒的工具!)为我拥有登录凭据的页面提交表单,然后将目标页面的内容输出到stdout。我可以使用phantom成功地访问表单并设置它的值,但是我不太确定提交表单并输出后续页面内容的正确语法。到目前为止,我所拥有的是:
var page = new WebPage();
var url = phantom.args[0];
page.open(url, function (status) {
if (status !== 'success') {
console.log('Unable to access network');
} else {
console.log(page.evaluate(function () {
var arr = document.getElementsByClassName("login-form");
var i;
for (i=0; i < arr.length; i++) {
if (arr[i].getAttribute('method') == "POST") {
arr[i].elements["email"].value="mylogin@somedomain.com";
arr[i].elements["password"].value="mypassword";
// This part doesn't seem to work. It returns the content
// of the current page, not the content of the page after
// the submit has been executed. Am I correctly instrumenting
// the submit in Phantom?
arr[i].submit();
return document.querySelectorAll('html')[0].outerHTML;
}
}
return "failed :-(";
}));
}
phantom.exit();
}
发布于 2012-02-13 13:42:29
我想通了。基本上这是一个异步问题。您不能只提交并期望立即呈现后续页面。您必须等到下一页的onLoad事件被触发。我的代码如下:
var page = new WebPage(), testindex = 0, loadInProgress = false;
page.onConsoleMessage = function(msg) {
console.log(msg);
};
page.onLoadStarted = function() {
loadInProgress = true;
console.log("load started");
};
page.onLoadFinished = function() {
loadInProgress = false;
console.log("load finished");
};
var steps = [
function() {
//Load Login Page
page.open("https://website.com/theformpage/");
},
function() {
//Enter Credentials
page.evaluate(function() {
var arr = document.getElementsByClassName("login-form");
var i;
for (i=0; i < arr.length; i++) {
if (arr[i].getAttribute('method') == "POST") {
arr[i].elements["email"].value="mylogin";
arr[i].elements["password"].value="mypassword";
return;
}
}
});
},
function() {
//Login
page.evaluate(function() {
var arr = document.getElementsByClassName("login-form");
var i;
for (i=0; i < arr.length; i++) {
if (arr[i].getAttribute('method') == "POST") {
arr[i].submit();
return;
}
}
});
},
function() {
// Output content of page to stdout after form has been submitted
page.evaluate(function() {
console.log(document.querySelectorAll('html')[0].outerHTML);
});
}
];
interval = setInterval(function() {
if (!loadInProgress && typeof steps[testindex] == "function") {
console.log("step " + (testindex + 1));
steps[testindex]();
testindex++;
}
if (typeof steps[testindex] != "function") {
console.log("test complete!");
phantom.exit();
}
}, 50);
发布于 2012-03-19 01:50:25
此外,CasperJS还为PhantomJS中的导航提供了一个很好的高级界面,包括单击链接和填写表单。
已更新以添加July 28, 2015 article comparing PhantomJS and CasperJS。
(感谢评论者M先生!)
发布于 2013-02-04 23:53:07
发送原始POST请求有时会更方便。下面你可以看到来自PhantomJS的post.js original example
// Example using HTTP POST operation
var page = require('webpage').create(),
server = 'http://posttestserver.com/post.php?dump',
data = 'universe=expanding&answer=42';
page.open(server, 'post', data, function (status) {
if (status !== 'success') {
console.log('Unable to post!');
} else {
console.log(page.content);
}
phantom.exit();
});
https://stackoverflow.com/questions/9246438
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