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發送多個文件的HtmlUnit和Java工作，我想通過這個元素來發送一些文件：從HTML輸入從Java
<input type="file" multiple="multiple" class="dz-hidden-input" accept="image/jpeg, image/gif ,image/png" style="visibility: hidden; position: absolute; top: 0px; left: 0px; height: 0px; width: 0px;">
它來自懸浮窗JavaScript庫wchich爲了管理創建這個隱藏的HTML元素文件上傳。
我已經試過（除其他事項外）這一個：
File fileToUpload = new File("C:\\image.jpg");
HtmlFileInput fileUploader = (HtmlFileInput) currentPage.getFirstByXPath("//input[@type='file']");
fileUploader.setFiles(fileToUpload);
但與此異常這使我確信這是不進行的方式，任何提示悲慘的失敗了？
GRAVE: Job run failed with unexpected RuntimeException: TypeError: Cannot find function readAsDataURL in object [object FileReader]. (https://static.milanuncios.com/js/fotos/dropzone.4.2.0.min.js#1)
======= EXCEPTION START ========
EcmaError: lineNumber=[1] column=[0] lineSource=[ function() {] name=
[TypeError] sourceName=
[https://static.milanuncios.com/js/fotos/dropzone.4.2.0.min.js] message=[TypeError: Cannot find function readAsDataURL in object [object FileReader]. (https://static.milanuncios.com/js/fotos/dropzone.4.2.0.min.js#1)]
com.gargoylesoftware.htmlunit.ScriptException: TypeError: Cannot find function readAsDataURL in object [object FileReader]. (https://static.milanuncios.com/js/fotos/dropzone.4.2.0.min.js#1)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:894)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:637)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:518)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:823)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:795)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2504)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2497)
at com.gargoylesoftware.htmlunit.javascript.background.JavaScriptFunctionJob.runJavaScript(JavaScriptFunctionJob.java:52)
at com.gargoylesoftware.htmlunit.javascript.background.JavaScriptExecutionJob.run(JavaScriptExecutionJob.java:102)
at com.gargoylesoftware.htmlunit.javascript.background.JavaScriptJobManagerImpl.runSingleJob(JavaScriptJobManagerImpl.java:424)
at com.gargoylesoftware.htmlunit.javascript.background.DefaultJavaScriptExecutor.run(DefaultJavaScriptExecutor.java:155)
at java.lang.Thread.run(Unknown Source)
Caused by: net.sourceforge.htmlunit.corejs.javascript.EcmaError: TypeError: Cannot find function readAsDataURL in object [object FileReader]. (https://static.milanuncios.com/js/fotos/dropzone.4.2.0.min.js#1)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3915)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3899)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3924)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError2(ScriptRuntime.java:3940)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.notFunctionError(ScriptRuntime.java:4007)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2402)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2384)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1348)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:800)
at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:105)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:416)
at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:322)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3264)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$4.doRun(JavaScriptEngine.java:816)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:879)
... 11 more
Enclosed exception:
net.sourceforge.htmlunit.corejs.javascript.EcmaError: TypeError: Cannot find function readAsDataURL in object [object FileReader]. (https://static.milanuncios.com/js/fotos/dropzone.4.2.0.min.js#1)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3915)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3899)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3924)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.typeError2(ScriptRuntime.java:3940)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.notFunctionError(ScriptRuntime.java:4007)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2402)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2384)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpretLoop(Interpreter.java:1348)
at script(https://static.milanuncios.com/js/fotos/dropzone.4.2.0.min.js:1)
at script(https://static.milanuncios.com/js/fotos/dropzone.4.2.0.min.js:1)
at script(https://static.milanuncios.com/js/fotos/dropzone.4.2.0.min.js:1)
at net.sourceforge.htmlunit.corejs.javascript.Interpreter.interpret(Interpreter.java:800)
at net.sourceforge.htmlunit.corejs.javascript.InterpretedFunction.call(InterpretedFunction.java:105)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.doTopCall(ContextFactory.java:416)
at com.gargoylesoftware.htmlunit.javascript.HtmlUnitContextFactory.doTopCall(HtmlUnitContextFactory.java:322)
at net.sourceforge.htmlunit.corejs.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3264)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$4.doRun(JavaScriptEngine.java:816)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:879)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:637)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:518)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:823)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:795)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2504)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunction(HtmlPage.java:2497)
at com.gargoylesoftware.htmlunit.javascript.background.JavaScriptFunctionJob.runJavaScript(JavaScriptFunctionJob.java:52)
at com.gargoylesoftware.htmlunit.javascript.background.JavaScriptExecutionJob.run(JavaScriptExecutionJob.java:102)
at com.gargoylesoftware.htmlunit.javascript.background.JavaScriptJobManagerImpl.runSingleJob(JavaScriptJobManagerImpl.java:424)
at com.gargoylesoftware.htmlunit.javascript.background.DefaultJavaScriptExecutor.run(DefaultJavaScriptExecutor.java:155)
at java.lang.Thread.run(Unknown Source)
== CALLING JAVASCRIPT ==
function() {
return a._processThumbnailQueue();
}
======= EXCEPTION END ========