When I try to debug an Errai app in Eclipse, I get the following error:
[WARN] Failed startup of context org.jboss.errai.cdi.server.gwt.JettyLauncher$WebAppContextWithReload#a9acff{/,/home/matthew/git/PressGangCCMSUI/src/main/webapp}
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
How can I fix this?
I don't know the specific cause, but when the project is cleaned, I can't run it in debug mode in Eclipse. To fix that I run the project with
mvn gwt:run
and once that launcher has come up I can then run the project in debug in Eclipse again.
Related
I am trying to deploy a gradle web project using tomcat in eclipse and when I am trying to access the application it throws me an exception as follows:
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: [36] in the generated java file: [......plugins\org.eclipse.wst.server.core\tmp0\work\Catalina...\org\apache\jsp\error_jsp.java]
The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory
Stacktrace:
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
The same application I am able to deploy manually in the tomcat server with out using eclipse then it is working perfectly.
Please provide me a solution.
While deploying the application into server using eclipse it is adding some dependencies which are conflicted to dependencies added using gradle, after removing the conflicted jars the solved the issue.
the generated war only have the jars which are configured in the gradle so that is working when we deploy it manually on the server.
I am using eclipse kepler IDE. I installed JBoss Tools plugin in my eclipse IDE. When i run an ant target first time got a error console in my eclipse IDE . But it will run successfully if i run the same target on second time. Here follows the message appears on the error console
Errors occurred during the build.
Errors running builder 'Integrated External Tool Builder' on project 'MY_PROJECT'.
Launch configuration type id "org.maven.ide.eclipse.Maven2BuilderConfigurationType" does not exist.
Possible causes:
Missing specification of a launch type (missing plug-in)
Incorrect launch configuration XML
Launch configuration type id "org.maven.ide.eclipse.Maven2BuilderConfigurationType" does not exist.
Possible causes:
Missing specification of a launch type (missing plug-in)
Incorrect launch configuration XML
I am trying to implement push notification for my app. i had set up the project in eclipse added google-play-services.jar in the java buildpath and checked it in order and export.so my app was working absolutely fine when i was doing registration with gcm and was getting the registration id from gcm too.but when i try to build my app from command line i am getting the below error
java.lang.NoClassDefFoundError: com.google.android.gms.gcm.GoogleCloudMessaging
i added the google-play-services.jar in the classpath so the code compiled without any issue but at runtime i am getting the above exception.looks like its not able to find the jar at runtime. how can i make the jar available at runtime also please help.
Go to configure build path -> order and export and select(check box) the packages(jars).
No matter what the build path contains in eclipse, it has nothing to do with an application. All the jars have to be added to the classpath.
I would use the following command to start the application after build:
java -cp google.jar;jarA.jar;jarB.jar;jarC.jar -jar application.jar
After the -cp option fill in the semicolon separated list of jars that you use.
So in Windows in the comand line I wrote
set GRADLE_OPTS=-Xdebug
-Xrunjdwp:transport=dt_socket,address=9999,server=y,suspend=y
Then I get:
C:\Project>gradle main
Listening for transport dt_socket at address: 9999
Then I put a breakpoint in the gradle.build file
and at last from Eclipse IDE
And I get
why this happend? So I can't debug gradle files, I can only debug java,groovy.. files?
It's a known limitation that Gradle build scripts can't currently be debugged in IDEs. I'm not aware of the specific error though. Usually the debugger just doesn't stop at the breakpoint (but it will stop at breakpoints for user-defined plugin/task classes and Gradle classes).
I am just starting with GWT. I use Eclipse and have installed the GWT plugin.
I have followed the directions here Maven GWT 2.0 and Eclipse to set up a GWT project using the gwt-maven-plugin. When I run the Maven goals gwt:compile gwt:run, GWT Development Mode is launched and I can copy the url from it to my browser and view the label.
However, the project has this problem:
Description: The web.xml file does not exist
Resource: WEB-INF
Path: /GWTExample/war
Location: Unknown
Type: Google Web App Problem
If I try to run the project as a Google Web Application, I get this warning:
[WARN] No startup URLs supplied and no plausible ones found -- use -startupUrl
I can get rid of the problem by copying the web.xml to the war directory, but I still get the URL issue when running as a Google Web App.
If I'm using Maven and GWT in Eclipse, should I just ignore the web.xml problem and always run applications in development mode via the Maven goals? Or is there a way to set things so I can run as a Google Web App?
EDIT: Related to the above, is it possible to debug a GWT app running in development mode started by gwt:compile gwt:run? I have added breakpoints to my application but it doesn't stop on them. I'm not sure if it is something I've configured wrong or if it's just not possible.
Update:
In response to Prem's answer...
When I run a compile gwt:run, the web.xml file isn't copied. When I run the install gwt:run, I get this error:
[INFO] --- gwt-maven-plugin:1.2:test (default) # SampleGWT ---
[INFO] using GWT jars from project dependencies : 2.0.4
[INFO] establishing classpath list (scope = test)
[ERROR] java.lang.NoClassDefFoundError: org/codehaus/mojo/gwt/test/MavenTestRunner
[ERROR] Caused by: java.lang.ClassNotFoundException: org.codehaus.mojo.gwt.test.MavenTestRunner
[ERROR] at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
[ERROR] at java.security.AccessController.doPrivileged(Native Method)
[ERROR] at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
[ERROR] at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
[ERROR] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
[ERROR] at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
[ERROR] Could not find the main class: org.codehaus.mojo.gwt.test.MavenTestRunner. Program will exit.
[ERROR] Exception in thread "main"
I’m guessing that bug http://jira.codehaus.org/browse/MGWT-24 is included in version 1.2 of the gwt-maven-plugin. Normally I wouldn’t run install on a project that builds a war file, but I would expect to at least get past the test phase of the build cycle.
Does anybody have any idea why I would get this error on the install but not the compile goals? Also, should I be expecting either goal to copy the web.xml file from src/main/webapp/WEB-INF/web.xml to the /war directory?
Description: The web.xml file does not exist
gwt-maven-plugin creates a project with 'war' packaging format (it's a web app so no surpirse here). Web.xml for this project will be under 'src/main/webapp' folder which will be copied to the 'war' directory (which is set as the output directory) as part of the 'resources' phase in the maven build life-cycle. You should always use
mvn compile gwt:run
or
mvn install gwt:run
so that resources are copied, all java files are compiled and gwt:compile is also invoked (since it is bound to the 'compile' phase automatically)
[WARN] No startup URLs supplied and no plausible ones found -- use -startupUrl
As per the stackoverflow link you used as reference, only your maven build file is setup with startupUrl. In order for it to work in Eclipse, you must edit the Run Configuration of your project and add the '-statupUrl' command line arguments to the existing arguments in the "Arguments" panel.
However, this is just a warning and it should not stop you from running your GWT application from eclipse. If you are facing the same "web.xml" problem here as well, it could be because you did not compile your project in your IDE before invoking "Run as Web Application". I suggest you to disable "Build Automatically" option for this project and always build it manually and invoke "GWT Compile" and then try "Run as web application"
EDIT: Related to the above, is it possible to debug a GWT app running in development mode started by gwt:compile gwt:run?
In general you must use "Remote Application" debug configuration for remote debugging a process. However I am not sure if it will work for GWT projects.
I got me too this warning:
No startup URLs supplied and no plausible ones found
when I have followed this gwt tutorial
In that screenshot there is no checkbox with "Generate sample code" . In my IDE ( sdk 2.5) it is, so I have unchecked...
It wasn't created any of the server and client packages, I have created the client manually, as the tutorial required. The tutorial until that step doesn't say I must have a server package too. That and his configuration is missing from project.
If you right-click on your project and go to Properties -> Google -> Web Application, your WAR directory might be something like either war or src/main/webapp/WEB-INF/classes.
Change that to src/main/webapp.
Also un-check the box next to "Launch and delploy from this directory..."
That's what fixed this problem for me. It also fixed the "can't find gwt-servlet.jar" problem at the same time.