如何开展WebBrowser控件跨域请求？ [英] How to carry out Cross Domain request in a Webbrowser Control?
问题描述
正如你所知道做跨域XMLHTTP请求不允许在Internet Explorer的安全考虑。
As you know doing Cross Domain XMLHTTP requests is not allowed for security reasons under Internet Explorer.
我有一个WebBrowser控件，我用 DocumentText 而不是导航来一个网址。由于当前访问有关：空白时，页面会尝试做一个请求本身或其他域我收到访问被拒绝 JavaScript错误。
I have a WebBrowser Control and I'm using DocumentText instead of Navigate to a URL. Since the current domain is about:blank when the page tries to do a request to itself or other domain I'm getting Access is denied Javascript error.
即使当我使用导航如果Javascript的一个请求到另一个域这是行不通的。
Even when I use Navigate if the Javascript do a request to another domain it doesn't work.
我怎样才能解决这个？
这个HTML code应与WebBrowser控件：
This HTML code should work with WebBrowser Control:
<body>
<a href="javascript:getit('http://www.google.com')">this should work</a>
<div id="x"></div>
</body>
<script>
function XHConn()
{
var xmlhttp, bComplete = false;
try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
catch (e) { try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
catch (e) { try { xmlhttp = new XMLHttpRequest(); }
catch (e) { xmlhttp = false; }}}
if (!xmlhttp) return null;
this.connect = function(sURL, sMethod, sVars, fnDone)
{
if (!xmlhttp) return false;
bComplete = false;
sMethod = sMethod.toUpperCase();
try {
if (sMethod == "GET")
{
xmlhttp.open(sMethod, sURL+"?"+sVars, true);
sVars = "";
}
else
{
xmlhttp.open(sMethod, sURL, true);
xmlhttp.setRequestHeader("Method", "POST "+sURL+" HTTP/1.1");
xmlhttp.setRequestHeader("Content-Type",
"application/x-www-form-urlencoded");
}
xmlhttp.onreadystatechange = function(){
if (xmlhttp.readyState == 4 && !bComplete)
{
bComplete = true;
fnDone(xmlhttp);
}};
xmlhttp.send(sVars);
}
catch(z) { return false; }
return true;
};
return this;
}
function getit(url){
var xmlhttp = new XHConn();
var fnWhenDone = function (oXML) { document.getElementById('x').innerHTML = oXML.responseText; alert(oXML.responseText); };
xmlhttp.connect(url, "GET", "", fnWhenDone);
}
</script>
- 我没有过的JavaScript / HTML code控制，我的应用程序只承载WebBrowser控件
- *我发现了一些所谓的 CROSS_DOMAIN_DATA URL操作标志< /一>，不知道这是否是正确的方向。即使这是我不知道如何实现它。*
- 此外，如果你能回答这个问题：<一href="http://stackoverflow.com/questions/411626/how-to-set-current-document-domain-in-webbrowser-control-to-avoid-access-is-denie">How设置当前document.domain的WebBrowser控件中，以避免出现访问被拒绝？这足以让我也。
- I don't have control over Javascript / HTML code, my application only hosts a Webbrowser Control
- *I found something called CROSS_DOMAIN_DATA URL Action Flags, not sure if it's right direction. Even it's I'm not sure how to implement it.*
- Also if you can answer to this question : How to set current document.domain in WebBrowser Control to avoid "Access is denied"? that's enough for me as well.
推荐答案
我发现了一个肮脏的解决方法，加载本地HTML（C：\ TEMP \ temp.html），然后通过JavaScript修改了它的内容。
I found a dirty workaround, load a local HTML (c:\temp\temp.html) and then modify the content of it via javascript.
在此之后有但是使用的document.write引起其他讨厌的问题，如JQuery的没有更多的跨域限制。就绪功能将无法正常工作。
After this point there is no more CrossDomain restrictions however using document.write causing other nasty problems such as JQuery .ready functions won't work.
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