[Htmlunit-user] (no subject)

[<sli...@re...>]

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