java htmlunit在单击页面的提交按钮时抛出ScriptException

Question

public HtmlPage getCBSE18(String roll, String schCode, String centerno) throws IOException {
HtmlPage page = webClient.getPage(CBSE18);
final HtmlForm form = page.getFormByName("FrontPage_Form1");
//System.out.println(form.asText());
final HtmlTextInput regField = form.getInputByName("regno");
regField.type(roll);
final HtmlTextInput schField = form.getInputByName("sch");
schField.type(schCode);
final HtmlTextInput centerField = form.getInputByName("cno");
centerField.type(schCode);
final HtmlSubmitInput button = form.getInputByName("B2");
webClient.waitForBackgroundJavaScript(1000);
System.out.println(button.asText());
final HtmlPage page2 = button.click();
System.out.println(page2.asText());
return page2;

上面的功能从"http://www.cbseresults.nic.in/class12zpq/class12th18.htm"加载一个页面，这是一个学生可以看到他的 CBSE 2018 考试成绩的网站......并填写必填字段，然后单击页面上的提交按钮..然后它返回显示候选人结果的页面...但我得到的只是这个例外...

May 31, 2018 8:55:44 AM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify
WARNING: Obsolete content type encountered: 'application/x-javascript'.
Submit
Exception in thread "main" ======= EXCEPTION START ========
EcmaError: lineNumber=[522] column=[0] lineSource=[null] name=[TypeError] sourceName=[http://www.cbseresults.nic.in/class12zpq/cal2.js] message=[TypeError: Cannot find function routeEvent in object [object HTMLDocument]. (http://www.cbseresults.nic.in/class12zpq/cal2.js#522)]
com.gargoylesoftware.htmlunit.ScriptException: TypeError: Cannot find function routeEvent in object [object HTMLDocument]. (http://www.cbseresults.nic.in/class12zpq/cal2.js#522)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:914)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:599)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:527)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:843)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:815)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2520)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2513)
at com.gargoylesoftware.htmlunit.javascript.host.event.EventListenersContainer.executeEventHandler(EventListenersContainer.java:308)
at com.gargoylesoftware.htmlunit.javascript.host.event.EventListenersContainer.executeBubblingListeners(EventListenersContainer.java:328)
at com.gargoylesoftware.htmlunit.javascript.host.event.EventTarget.fireEvent(EventTarget.java:192)
at com.gargoylesoftware.htmlunit.html.DomElement$2.run(DomElement.java:1420)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:599)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:527)
at com.gargoylesoftware.htmlunit.html.DomElement.fireEvent(DomElement.java:1425)
at com.gargoylesoftware.htmlunit.html.DomElement.doClickFireClickEvent(DomElement.java:1092)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:1023)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:973)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:903)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:884)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:865)
at resultrobot.html.CBSEResultFetcher.getCBSE18(CBSEResultFetcher.java:89)
at resultrobot.html.CBSEResultFetcher.main(CBSEResultFetcher.java:128)
Caused by: net.sourceforge.htmlunit.corejs.javascript.EcmaError: TypeError: Cannot find function routeEvent in object [object HTMLDocument]. (http://www.cbseresults.nic.in/class12zpq/cal2.js#522)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:4130)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:4108)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError(ScriptRuntime.java:4141)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError2(ScriptRuntime.java:4160)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.notFunctionError(ScriptRuntime.java:4236)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2520)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2502)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1327)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:815)
at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:111)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:417)
at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:325)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3424)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$4.doRun(JavaScriptEngine.java:836)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:899)
... 21 more
Enclosed exception: 
net.sourceforge.htmlunit.corejs.javascript.EcmaError: TypeError: Cannot find function routeEvent in object [object HTMLDocument]. (http://www.cbseresults.nic.in/class12zpq/cal2.js#522)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:4130)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:4108)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError(ScriptRuntime.java:4141)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError2(ScriptRuntime.java:4160)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.notFunctionError(ScriptRuntime.java:4236)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2520)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2502)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1327)
at script.markClick(http://www.cbseresults.nic.in/class12zpq/cal2.js:522)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:815)
at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:111)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:417)
at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:325)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3424)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$4.doRun(JavaScriptEngine.java:836)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:899)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:599)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:527)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:843)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:815)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2520)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2513)
at com.gargoylesoftware.htmlunit.javascript.host.event.EventListenersContainer.executeEventHandler(EventListenersContainer.java:308)
at com.gargoylesoftware.htmlunit.javascript.host.event.EventListenersContainer.executeBubblingListeners(EventListenersContainer.java:328)
at com.gargoylesoftware.htmlunit.javascript.host.event.EventTarget.fireEvent(EventTarget.java:192)
at com.gargoylesoftware.htmlunit.html.DomElement$2.run(DomElement.java:1420)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:599)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:527)
at com.gargoylesoftware.htmlunit.html.DomElement.fireEvent(DomElement.java:1425)
at com.gargoylesoftware.htmlunit.html.DomElement.doClickFireClickEvent(DomElement.java:1092)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:1023)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:973)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:903)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:884)
at com.gargoylesoftware.htmlunit.html.DomElement.click(DomElement.java:865)
at resultrobot.html.CBSEResultFetcher.getCBSE18(CBSEResultFetcher.java:89)
at resultrobot.html.CBSEResultFetcher.main(CBSEResultFetcher.java:128)
== CALLING JAVASCRIPT ==
function markClick(e) {
if (isIE || isOpera6) {
winX = event.screenX;
winY = event.screenY;
} else {
if (isN4 || isN6) {
winX = e.screenX;
winY = e.screenY;
document.routeEvent(e);
}
}
if (isN4 || isN6) {
document.routeEvent(e);
} else {
event.cancelBubble = false;
}
return true;
}
======= EXCEPTION END ========
Java Result: 1

最后它通过 webClient.getOptions((.setJavaScriptEnabled(false(; webClient.getOptions((.setThrowExceptionOnScriptError(false(; 这是JavaScript抛出错误

Answer 1

第一次，通过启用选项 告诉 Web 客户端不要因脚本错误而引发异常

webClient.getOptions().setThrowExceptionOnScriptError(false);