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Re: [Htmlunit-user] (no subject)
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From: <sli...@re...> - 2009-02-08 21:49:14
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Hi
Thanks for responding so quickly. I am using HtmlUnit 2.4 and
HtmlUnit-core-js-2.4. When I check the access logs the second url never
even gets queried, it seems to fail somewhere in the .send(param) call.
The ajax function gets called via a second function similar to your test
function but instead of using an onclick it is called as from the <script>
tags in the page header. e.g.
<head>
<script type="text/javascript">
...ajax and test function here
test();
</script>
To shed some light on why the page does this in case it helps, the ajax
query triggers a server based data retrieval and rendering process that
can potentially take some time. To provide a friendlier user experience a
"Please wait" page is loaded with the ajax request returning when the
rendering is complete and alerting the user they can now download the
result.
Thanks
> Dear Sling,
>
> I am not able to reproduce. The below case succeeds by HtmlUnit with FF
> simulation. Are you using latest 2.4 version?
>
> Also, I believe HtmlUnit incorrectly doesn't handle "XMLHttpRequest" as
> IE7 does, but this is a different issue than yours.
>
> I guess the error happens during posting to the second URL, because JS
> error happens there, can you investigate the second page or post its
> html/js code?
>
> <html>
> <head>
> <script>
> function test() {
> ajax(['para1', 'para2']);
> }
>
> function ajax(parArr, callback) {
> var http = new XMLHttpRequest();
> var params = "";
> for (var i=0; i<(parArr.length-1); i++) {
> params = params + parArr[i]+"&";
> }
> params = params + parArr[parArr.length-1];
> http.open("POST", "hello2.html", true);
> http.setRequestHeader("Content-type",
> "application/x-www-form-urlencoded");
> http.setRequestHeader("Content-length", params.length);
> http.setRequestHeader("Connection", "close");
> http.onreadystatechange = function() {//Call a function when the state
> changes.
> if(http.readyState == 4 && http.status == 200) {
> this.callbackFunction(http.responseText);
> }
> }
> this.callbackFunction = callback || function () { alert("Missing
> callback function!")};
> http.send(params);
> }
> </script>
> </head>
> <body>
> <input id='myButton' type=button value='ana hena'
> onclick='test()'><br>
> </body>
> </html>
>
>
>
>
> ________________________________
> From: "sli...@re..."
> <sli...@re...>
> To: htm...@li...
> Sent: Sunday, February 8, 2009 11:17:43 PM
> Subject: [Htmlunit-user] (no subject)
>
> Hi
>
> I have just started using HtmlUnit and have found it excellent so far. I
> have come across a problem that I hope someone might be able to help me
> out with. I searched the archives and the web and have not had any luck.
>
> The actual error may be from the rhino libraries but I thought I would try
> here first in case it was something I was doing wrong with HtmlUnit.
>
> The stack trace is as follows (the code that generates it is down further)
> Exception in thread "HtmlUnit Managed Thread #6 for WebWindow :
> XMLHttpRequest.send" org.mozilla.javascript.EcmaError: TypeError: Cannot
> find default value for object. (script in http://webhost/Reporter/ from
> (13, 32) to (106, 10)#38)
> at
> org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3654)
> at
> org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3632)
> at
> org.mozilla.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3660)
> at
> org.mozilla.javascript.ScriptRuntime.typeError1(ScriptRuntime.java:3672)
> at
> org.mozilla.javascript.ScriptableObject.getDefaultValue(ScriptableObject.java:780)
> at
> org.mozilla.javascript.ScriptableObject.getDefaultValue(ScriptableObject.java:699)
> at
> org.mozilla.javascript.ScriptRuntime.toString(ScriptRuntime.java:724)
> at
> org.mozilla.javascript.ScriptRuntime.notFunctionError(ScriptRuntime.java:3741)
> at
> org.mozilla.javascript.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2247)
> at
> org.mozilla.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2214)
> at
> org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.java:3143)
> at script(script in http://webhost/Reporter/ from (13, 32) to
> (106, 10):38)
> at
> org.mozilla.javascript.Interpreter.interpret(Interpreter.java:2487)
> at
> org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:164)
> at
> org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:398)
> at
> com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:192)
> at
> org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3065)
> at
> org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:162)
> at
> com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:472)
> at
> com.gargoylesoftware.htmlunit.javascript.host.XMLHttpRequest.setState(XMLHttpRequest.java:142)
> at
> com.gargoylesoftware.htmlunit.javascript.host.XMLHttpRequest.doSend(XMLHttpRequest.java:413)
> at
> com.gargoylesoftware.htmlunit.javascript.host.XMLHttpRequest.access$000(XMLHttpRequest.java:54)
> at
> com.gargoylesoftware.htmlunit.javascript.host.XMLHttpRequest$1.run(XMLHttpRequest.java:361)
> at org.mozilla.javascript.Context.call(Context.java:515)
> at
> org.mozilla.javascript.ContextFactory.call(ContextFactory.java:507)
> at
> com.gargoylesoftware.htmlunit.javascript.host.XMLHttpRequest$2.run(XMLHttpRequest.java:367)
> at java.lang.Thread.run(Unknown Source)
> at
> com.gargoylesoftware.htmlunit.ThreadManager$1.run(ThreadManager.java:116)
>
>
> The javascript on the page that triggers the error is as follows
>
> Obviously parArr is an array of parameters and callback is the name of the
> function that will be called when the ajax request returns.
> createXMLHttpRequest() returns a browser compatible Ajax object which in
> this case should be XMLHttpRequest.
>
> function ajax(parArr, callback) {
> var http = createXMLHttpRequest();
> var params = "";
> for (var i=0; i<(parArr.length-1); i++) {
> params = params + parArr[i]+"&";
> }
> params = params + parArr[parArr.length-1];
> http.open("POST", "/Reporter/", true);
> http.setRequestHeader("Content-type",
> "application/x-www-form-urlencoded");
> http.setRequestHeader("Content-length", params.length);
> http.setRequestHeader("Connection", "close");
> http.onreadystatechange = function() {//Call a function when the state
> changes.
> if(http.readyState == 4 && http.status == 200) {
> this.callbackFunction(http.responseText);
> }
> }
> this.callbackFunction = callback || function () { alert("Missing
> callback function!")};
> http.send(params);
> }
>
>>From what I can determine the ampersand in the parameters is causing the
> problem, when I modify the request to pass only one parameter (e.g. no
> ampersand) it is successful.
>
> Any help or hints would be most appreciated. I hope I have provided enough
> information.
>
> Thanks
>
>
>
> ------------------------------------------------------------------------------
> Create and Deploy Rich Internet Apps outside the browser with
> Adobe(R)AIR(TM)
> software. With Adobe AIR, Ajax developers can use existing skills and code
> to
> build responsive, highly engaging applications that combine the power of
> local
> resources and data with the reach of the web. Download the Adobe AIR SDK
> and
> Ajax docs to start building applications
> today-http://p.sf.net/sfu/adobe-com
> _______________________________________________
> Htmlunit-user mailing list
> Htm...@li...
> https://lists.sourceforge.net/lists/listinfo/htmlunit-user
>
>
>
> ------------------------------------------------------------------------------
> Create and Deploy Rich Internet Apps outside the browser with
> Adobe(R)AIR(TM)
> software. With Adobe AIR, Ajax developers can use existing skills and code
> to
> build responsive, highly engaging applications that combine the power of
> local
> resources and data with the reach of the web. Download the Adobe AIR SDK
> and
> Ajax docs to start building applications
> today-http://p.sf.net/sfu/adobe-com_______________________________________________
> Htmlunit-user mailing list
> Htm...@li...
> https://lists.sourceforge.net/lists/listinfo/htmlunit-user
>
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