htmlunit 无法单击表格元素内的按钮

Question

我正在尝试点击此站点中的搜索按钮：http://www.amadeusepower.com/trek/portals/trek/default.aspx?Culture=en-US

但由于返回的页面与旧页面相同，因此显然无法单击它。它需要返回一个显示此搜索结果的页面。

我尝试了 htmlunitscripter，但它似乎不知道我点击了该按钮，并且它没有为它生成代码。我试过了：

HtmlElement theElement5 = (HtmlElement) page.getElementById("ctl00_ctl00_ctl00_cph1_cph1_QuickSearchAll1_QuickFlightSearchControl1_btnSearch");
page = (HtmlPage) theElement5.click();

但它不起作用（返回旧页面）。我在 selenium 中尝试了下一个代码，它可以工作，但我无法使用 selenium，因为当我尝试在 Web 服务中使用它时会出现问题。

WebElement searchbutton = driver.findElement(By.id("ctl00_ctl00_ctl00_cph1_cph1_QuickSearchAll1_QuickFlightSearchControl1_btnSearch"));
searchbutton.click();

如何在 htmlunit 中访问此按钮？我没有尝试 xpath，因为我不知道如何使用它获取元素。有人可以看看这个网站并提出一个解决方案来达到和点击这个按钮吗？

编辑：

当我尝试这个时

page.executeJavaScript("var elem = document.getElementById('ctl00_ctl00_ctl00_cph1_cph1_QuickSearchAll1_QuickFlightSearchControl1_btnSearch'); elem.click();");

它抛出这个异常。

May 29, 2013 8:23:41 PM com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine handleJavaScriptException
INFO: Caught script exception
======= EXCEPTION START ========
EcmaError: lineNumber=[1] column=[0] lineSource=[<no source>] name=[TypeError] sourceName=[injected script] message=[TypeError: Cannot find function click in object [object HTMLSpanElement]. (injected script#1)]
com.gargoylesoftware.htmlunit.ScriptException: TypeError: Cannot find function click in object [object HTMLSpanElement]. (injected script#1)
at        com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:669)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:601)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:507)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:555)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:530)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptIfPossible(HtmlPage.java:979)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScript(HtmlPage.java:947)
at eko.htmlunit.ekoht.main(ekoht.java:63)
Caused by: net.sourceforge.htmlunit.corejs.javascript.EcmaError: TypeError: Cannot find function click in object [object HTMLSpanElement]. (injected script#1)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3603)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3587)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3608)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError2(ScriptRuntime.java:3624)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.notFunctionError(ScriptRuntime.java:3688)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2207)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2189)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1333)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:798)
at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:105)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:405)
at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:275)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3031)
at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.exec(InterpretedFunction.java:115)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$3.doRun(JavaScriptEngine.java:546)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:654)
... 7 more
Enclosed exception: 
net.sourceforge.htmlunit.corejs.javascript.EcmaError: TypeError: Cannot find function click in object [object HTMLSpanElement]. (injected script#1)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3603)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3587)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3608)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError2(ScriptRuntime.java:3624)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.notFunctionError(ScriptRuntime.java:3688)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2207)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2189)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1333)
at script(injected script:1)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:798)
at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:105)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:405)
at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:275)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3031)
at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.exec(InterpretedFunction.java:115)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$3.doRun(JavaScriptEngine.java:546)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:654)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:601)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:507)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:555)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.execute(JavaScriptEngine.java:530)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptIfPossible(HtmlPage.java:979)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScript(HtmlPage.java:947)
at eko.htmlunit.ekoht.main(ekoht.java:63)
======= EXCEPTION END ========

显然它找不到元素的点击功能。还能做什么？

Answer 1

你可以尝试通过js执行调用，看看是不是这样：

JS 应该是这样的：

var elem = document.getElementById('ctl00_ctl00_ctl00_cph1_cph1_QuickSearchAll1_QuickFlightSearchControl1_btnSearch'); elem.click();