I am using htmlunit 2.9 and on java script parsing I am getting script exception due to console in following exception
function debug(o){
if (console && console.log){
console.log(o)
}
};
Stacktrace
EcmaError:
lineNumber=[168]
column=[0]
lineSource=[null]
name=[ReferenceError]
sourceName=[script in http://localhost:808/mypage/ll.html from (154, 36) to (301, 14)]
message=[ReferenceError: "console" is not defined. (script in http://localhost:8080.com/mypage/ll.html from (154, 36) to (301, 14)#168)]
com.gargoylesoftware.htmlunit.ScriptException: ReferenceError: "console" is not defined. (script in http://localhost:8080.com/mypage/ll.html from (154, 36) to (301, 14)#168)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine$HtmlUnitContextAction.run(JavaScriptEngine.java:595)
at net.sourceforge.htmlunit.corejs.javascript.Context.call(Context.java:537)
at net.sourceforge.htmlunit.corejs.javascript.ContextFactory.call(ContextFactory.java:538)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:545)
at com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine.callFunction(JavaScriptEngine.java:520)
at com.gargoylesoftware.htmlunit.html.HtmlPage.executeJavaScriptFunctionIfPossible(HtmlPage.java:896)
at com.gargoylesoftware.htmlunit.javascript.host.EventListenersContainer.executeEventHandler(EventListenersContainer.java:195)
at com.gargoylesoftware.htmlunit.javascript.host.EventListenersContainer.executeBubblingListeners(EventListenersContainer.java:214)
if I try specified page on firefox it works fine, I have tried v 3.6 as well as 9.0.1.
i have tried also to set setThrowExceptionOnScriptError(false) in order to avoid exception but engine stops or do not parse javascript after getting an error.
Is there any way that javascript engine can understand console in javascript?
Your if condition isn't properly structured:
if (console && console.log){
That first if will throw an error if its not set; accessing console in environments its not defined in is like accessing any undefined variable; it will throw a ReferenceError.
Try:
if( typeof console != "undefined" && console.log ) {
Or:
if(window.console && console.log) {
It doesn't throw in error in Firefox since Firefox implements the Firebug API, as do Chrome and Safari. But, by default, Internet Explorer does not, so, it's worth doing a proper feature check here, as it will throw a ReferenceError in browsers that don't implement this API.
https://sourceforge.net/tracker/index.php?func=detail&aid=3518475&group_id=47038&atid=448266 implies that support for console was just added to HtmlUnit.
Your code does use the java script console object, and it's not supported till the current version, and it is promised to be supported in the next release as it is said here
Related
I am using wikidata api to fetch a entity using its english title,
wdf = WikibaseDataFetcher.getWikidataDataFetcher();
eid = wdf.getEntityDocumentsByTitle("enwiki", entitle);
Earlier, with an older version of wikidata-api, I was able to run it smoothly.
After updating to version 5.0.0, I always get the following error,
Exception in thread "main" java.lang.NullPointerException
at org.wikidata.wdtk.wikibaseapi.ApiConnection.fillCookies(ApiConnection.java:544)
at org.wikidata.wdtk.wikibaseapi.ApiConnection.sendRequest(ApiConnection.java:346)
at org.wikidata.wdtk.wikibaseapi.WbGetEntitiesAction.wbGetEntities(WbGetEntitiesAction.java:187)
How to fix this?
I get the same problem.
I tried to use latest version from github and get the same exception.
I execute the sample from documentation i.e the simple call:
Map<String, EntityDocument> results = wbdf.getEntityDocuments("Q80", "P31");
Seems code doesn't check for existence of a given cookie.
I added the verification, recompiled and everything seems to work.
Go to ApiConnection.java:543
if (headerCookies != null)
for (String cookie : headerCookies) {
No warranty ! :-)
Please forgive me, as I am a Java man dabbling in Javascript business :)
I wanted to be able to define a set of integration test cases to be easy to script against a Java application. I thought Javascript would be a perfect language to script against. To that end, I am using the Rhino engine that comes with JDK 7, via Java's Scripting API. The scripts would have access to Java classes already defined in the application, and could be reused to define use case scenarios for integration testing.
In the Java application, I have binded the javascript engine itself to the script as jsengine, so that I can load javascript files (Including a JavaScript file during Rhino eval).
I have two Javascript files, as defined below:
Function.js:
function send(msg) {
send.sendMessage(msg);
}
TestCase.js
jsengine.eval(new java.io.FileReader("Function.js");
sendMsg("Test Message");
I also have the following object defined and binded to the script as "javaobj":
public class TestConnection {
...
public void send(String message) {
// Code to send the string message via JMS
}
}
However, the Rhino engine complains with the following Exception. It seems to not like calling the javaobj's send method, for some reason.
javax.script.ScriptException: sun.org.mozilla.javascript.internal.EcmaError: TypeError: Cannot find function send in object
function sendMsg(msg) {...}. (TestCase.js#3) in TestCase.js at line number 3
at com.sun.script.javascript.RhinoScriptEngine.eval(RhinoScriptEngine.java:224)
at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:212)
at com.foo.test.scenario.JavaScriptEngine.execute(JavaScriptEngine.java:56)
at com.foo.test.TestSuite.start(TestSuite.java:88)
at com.foo.test.TestSuite.main(TestSuite.java:41)
Caused by: sun.org.mozilla.javascript.internal.EcmaError: TypeError: Cannot find function send in object
function sendMsg(msg) {...}. (TestCase.js#3) in TestCase.js at line number 3
at sun.org.mozilla.javascript.internal.ScriptRuntime.constructError(ScriptRuntime.java:3773)
at sun.org.mozilla.javascript.internal.ScriptRuntime.constructError(ScriptRuntime.java:3751)
at sun.org.mozilla.javascript.internal.ScriptRuntime.typeError(ScriptRuntime.java:3779)
at sun.org.mozilla.javascript.internal.ScriptRuntime.typeError2(ScriptRuntime.java:3798)
at sun.org.mozilla.javascript.internal.ScriptRuntime.notFunctionError(ScriptRuntime.java:3869)
at sun.org.mozilla.javascript.internal.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2345)
at sun.org.mozilla.javascript.internal.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2312)
at sun.org.mozilla.javascript.internal.Interpreter.interpretLoop(Interpreter.java:1524)
at sun.org.mozilla.javascript.internal.Interpreter.interpret(Interpreter.java:854)
at sun.org.mozilla.javascript.internal.InterpretedFunction.call(InterpretedFunction.java:164)
at sun.org.mozilla.javascript.internal.ContextFactory.doTopCall(ContextFactory.java:429)
at com.sun.script.javascript.RhinoScriptEngine$1.superDoTopCall(RhinoScriptEngine.java:116)
at com.sun.script.javascript.RhinoScriptEngine$1.doTopCall(RhinoScriptEngine.java:109)
at sun.org.mozilla.javascript.internal.ScriptRuntime.doTopCall(ScriptRuntime.java:3163)
at sun.org.mozilla.javascript.internal.InterpretedFunction.exec(InterpretedFunction.java:175)
at sun.org.mozilla.javascript.internal.Context.evaluateReader(Context.java:1159)
at com.sun.script.javascript.RhinoScriptEngine.eval(RhinoScriptEngine.java:214)
... 4 more
Has anyone ever encountered this type of issue with Rhino?
P.S. This question seems related, but no answer given as well (TypeError in Rhino: migration from Java 6 to Java 7)
Looks like I found my own answer. There was a name conflict between the Javascript function and the name of the binded Java object. Both having the same name, the engine tries to call a non-existent method on a Function object!
Silly me... :P
I have this piece of code which worked in Java 6
if(false==sess.getAttribute("admin") || null==sess.getAttribute("admin"))
{
res.sendRedirect("/myapp/login.jsp?errmsg=You must log in as an administrator to manage resources");
return;
}
I want to familiarize myself with the new features of Java 7 and what it offers new in javaee hence I upgraded netbeans to 7.4 and jdk 7u45.
My project opened successfully however the file with this code is marked as a java class with an error by netbeans. Running the project I get the error
java.lang.RuntimeException: Uncompilable source code - incomparable types: boolean and java.lang.Object
What I want to ask is why this worked in java6 and doesn't work in java7
FYI HttpSession sess = req.getSession();
HttpSession.getAttribute returns an Object.
Change the line to (Boolean.FALSE==sess.getAtrribute)
Looks like autoboxing (boolean to Boolean) has changed in Java.
Unfortunately I cannot reproduce your error. I have seen a similar error message in the same Netbeans 7.4/jdk 7u45.
My code:
if (true == evt.getNewValue())
(where evt is a PropertyChangeEvent)
The message in Netbeans (when I hover over the red cross left to the statement) says "incomparable types: boolean and Object". Notice the difference with your message: the missing "java/lang" before Object.
And even stranger: my code compiles without any problem.
Compiler options in Netbeans are: "-version -Xlint:unchecked -Xlint:deprecation"
You should try with
if(false==(Boolean)sess.getAttribute("admin") || null==sess.getAttribute("admin"))
{
res.sendRedirect("/myapp/login.jsp?errmsg=You must log in as an administrator to manage resources");
return;
}
getAttribute probably returns either an Object or a boolean. If it returns a boolean, then null==getAttrubute will not work and if it returns an Object then false==getAttribute will fail.
I'm just starting out with Geb and am encountering this error when inputting sample code from the Book of Geb:
import geb.Browser
Browser.drive {
go "http://google.com/ncr"
// make sure we actually got to the page
assert title == "Google"
// enter wikipedia into the search field
$("input", name: "q").value("wikipedia")
// wait for the change to results page to happen
// (google updates the page dynamically without a new request)
waitFor { title.endsWith("Google Search") }
// is the first link to wikipedia?
def firstLink = $("li.g", 0).find("a.l")
assert firstLink.text() == "Wikipedia"
// click the link
firstLink.click()
// wait for Google's javascript to redirect to Wikipedia
waitFor { title == "Wikipedia" }
}
I am encountering this exception:
Caught: java.lang.IncompatibleClassChangeError: the number of constructors during runtime and compile time for java.lang.Exception do not match. Expected 4 but got 5
at geb.error.GebException.<init>(GebException.groovy:20)
at geb.waiting.WaitTimeoutException.<init>(WaitTimeoutException.groovy:30)
at geb.waiting.Wait.waitFor(Wait.groovy:108)
.......
Any ideas? Thanks!
Are you using Java 7 by any chance? Groovy code that uses exceptions that was compiled with < Java 7 is not compatible with Java 7.
Geb is compatible with Java7 as of 0.7.1. If you are below that you should upgrade. SEe: http://jira.codehaus.org/browse/GEB-194
I am using Struts 2.1.8 and facing validation problem in IE. I am getting the following error
An exception occurred: Error. Error message: Invalid argument.
I tried out to figure out the cause and found the following. My generated javascript code is:
field = form.elements['district.name'];
var error = "Enter only alphabets for district";
if (continueValidation && field.value != null && !field.value.match("^[a-zA-Z ]*$")) {
addError(field, error);
errors = true;
}
I tried to mock up by putting the same code in a function and calling it in onclick event. The method addError() throws the exception and the reason is field variable. If I change it to field[0], it works fine. How to fix this error?
Check the generated HTML source. Open the page in webbrowser, rightclick and choose View Source. Is the input field's name really district.name? Isn't it prefixed/suffixed with some other autogenerated key (possibly the ID/name of the <form>) like as many other MVC frameworks do? If so, you'll need to change the JavaScript code accordingly that it uses the right element name as it appears in the HTML DOM tree. You know, JavaScript runs at the client machine and only sees the generated HTML DOM tree, not the "original" server-side code which is responsible for generating the HTML.