How to solve the cross domain in HtmlUnit - cross-domain

Question

Error:
六月 21, 2016 4:15:06 下午 com.gargoylesoftware.htmlunit.xml.XmlPage <init>
警告: Failed parsing XML document http://live3.win007.com/vbsxml/goalBf3.xml?r=0071466496906000: Content is not allowed in prolog.
六月 21, 2016 4:15:06 下午 com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine handleJavaScriptException
信息: Caught script exception
======= EXCEPTION START ========
EcmaError: lineNumber=[41] column=[0] lineSource=[<no source>] name=[TypeError] sourceName=[http://live3.win007.com/common2.js] message=[TypeError: Cannot read property "childNodes" from null (http://live3.win007.com/common2.js#41)]
com.gargoylesoftware.htmlunit.ScriptException: TypeError: Cannot read property "childNodes" from null (http://live3.win007.com/common2.js#41)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:865)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:628)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:513)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:747)
at com.gargoylesoftware.htmlunit.html.HtmlPage.loadExternalJavaScriptFile(HtmlPage.java:1032)
at com.gargoylesoftware.htmlunit.html.HtmlScript.executeScriptIfNeeded(HtmlScript.java:395)
at com.gargoylesoftware.htmlunit.html.HtmlScript$3.execute(HtmlScript.java:276)
common2.js code：
function getOddsData() {
oddsHttp.open("get", "vbsxml/goalBf3.xml?r=007" + Date.parse(new Date()), false);
oddsHttp.setRequestHeader("User-Agent", "");
oddsHttp.send(null);
var root = oddsHttp.responseXML.documentElement.childNodes[0];
oddsHttp as XMLHttpRequest
I suspect that a cross domain problem leads to " Cannot read property "childNodes""
I want to modify the JS by the following methods
public WebResponse getResponse(WebRequest request) throws IOException {
if(request.getUrl().toExternalForm().contains("common2.js")){
....
}
}
How to fix it?

Answer 1

This is not a cross domain problem,the warning: Content is not allowed in prolog is the key
I solved the problem by the following code
new WebConnectionWrapper(wc) {
public WebResponse getResponse(WebRequest request) throws IOException {
WebResponse response = super.getResponse(request);
if(request.getUrl().toExternalForm().contains("goalBf3.xml")){
System.out.println(response.getContentAsString("UTF-8"));
String content = response.getContentAsString("UTF-8");
if(null != content && !"".equals(content)){
if(content.indexOf("<") != -1 && content.lastIndexOf(">") != -1 && content.lastIndexOf(">") > content.indexOf("<"))
content = content.substring(content.indexOf("<"), content.lastIndexOf(">") + 1);
}
WebResponseData data = new WebResponseData(content.getBytes("UTF-8"),
response.getStatusCode(), response.getStatusMessage(), response.getResponseHeaders());
response = new WebResponse(data, request, response.getLoadTime());
}
return response;
}
}