Jim*_*ris 32 javascript iframe webkit phantomjs casperjs
我有一个带iframe的网页.我想使用CasperJS访问iframe的内容.特别是,我需要单击按钮并填写表单.我怎样才能做到这一点？
主要网页是 main.html:
<html><body>
<a id='main-a' href="javascript:console.log('pressed main-a');">main-a</a>
<iframe src="iframe.html"></iframe>
<a id='main-b' href="javascript:console.log('pressed main-b');">main-b</a>
</body></html>
iframe是:
<html><body>
<a id='iframe-c' href="javascript:console.log('pressed iframe-c');">iframe-c</a>
</body></html>
我天真的做法:
var casper = require('casper').create({
verbose: true,
logLevel: "debug"
});
casper.start("http://jim.sh/~jim/tmp/casper/main.html", function() {
this.click('a#main-a');
this.click('a#main-b');
this.click('a#iframe-c');
});
casper.run(function() {
this.exit();
});
当然,这不起作用,因为a#iframe-c选择器在主框架中无效:
[info] [phantom] Starting...
[info] [phantom] Running suite: 2 steps
[debug] [phantom] opening url: http://jim.sh/~jim/tmp/casper/main.html, HTTP GET
[debug] [phantom] Navigation requested: url=http://jim.sh/~jim/tmp/casper/main.html, type=Other, lock=true, isMainFrame=true
[debug] [phantom] url changed to "http://jim.sh/~jim/tmp/casper/main.html"
[debug] [phantom] Navigation requested: url=http://jim.sh/~jim/tmp/casper/iframe.html, type=Other, lock=true, isMainFrame=false
[debug] [phantom] Successfully injected Casper client-side utilities
[info] [phantom] Step 2/2 http://jim.sh/~jim/tmp/casper/main.html (HTTP 200)
[debug] [phantom] Mouse event 'click' on selector: a#main-a
[info] [remote] pressed main-a
[debug] [phantom] Mouse event 'click' on selector: a#main-b
[info] [remote] pressed main-b
[debug] [phantom] Mouse event 'click' on selector: a#iframe-c
FAIL CasperError: Cannot dispatch click event on nonexistent selector: a#iframe-c
# type: uncaughtError
# error: "CasperError: Cannot dispatch click event on nonexistent selector: a#iframe-c"
CasperError: Cannot dispatch click event on nonexistent selector: a#iframe-c
/tmp:901 in mouseEvent
/tmp:365 in click
/tmp/test.js:9
/tmp:1103 in runStep
/tmp:324 in checkStep
有没有办法让这项工作？涉及直接戳入phantomjs的黑客攻击会很好,但我不知道该怎么做.
我正在使用CasperJS版本1.0.0-RC1和phantomjs版本1.6.0.
Jim*_*ris 41
花了很长时间寻找这个,当然我在发布问题后找到答案的几分钟.
我可以使用在此提交中添加到phantomjs的新帧切换命令.具体来说,this.page.switchToChildFrame(0)和this.page.switchToParentFrame()功能.它似乎没有文档,似乎已经为即将发布的版本更改了方法,但它确实有效:
var casper = require('casper').create({
verbose: true,
logLevel: "debug"
});
casper.start("http://jim.sh/~jim/tmp/casper/main.html", function() {
this.click('a#main-a');
this.click('a#main-b');
this.page.switchToChildFrame(0);
this.click('a#iframe-c');
this.page.switchToParentFrame();
});
casper.run(function() {
this.exit();
});
oll*_*lle 35
从1.0开始,您可以使用withFrame
casper.open("http://www.example.com/page.html", function() {
casper.withFrame('flashHolder', function() {
this.test.assertSelectorExists('#the-flash-thing', 'Should show Flash');
});
});
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