Bug 196007 - Unable to start embedded HTTP server
Unable to start embedded HTTP server
Product: javaee
Classification: Unclassified
Component: GWT
PC Other
: P3 (vote)
Assigned To: issues@javaee
Depends on:
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Reported: 2011-02-25 14:51 UTC by drecute
Modified: 2016-07-07 08:53 UTC (History)
0 users

See Also:
Issue Type: DEFECT


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Description drecute 2011-02-25 14:51:32 UTC
I will like to say that I have added the -javaagent option to the JVM argument in my project properties but I still get this exception over and over again. i am using the "Run GWT Dev mode on App Engine" option to run the application.

java.lang.RuntimeException: Unable to locate the App Engine agent. Please use dev_appserver, KickStart,  or set the jvm flag: "-javaagent:<sdk_root>/lib/agent/appengine-agent.jar"
        at com.google.appengine.tools.development.DevAppServerFactory.testAgentIsInstalled(DevAppServerFactory.java:102)
        at com.google.appengine.tools.development.DevAppServerFactory.createDevAppServer(DevAppServerFactory.java:77)
        at com.google.appengine.tools.development.DevAppServerFactory.createDevAppServer(DevAppServerFactory.java:38)
        at com.google.appengine.tools.development.gwt.AppEngineLauncher.start(AppEngineLauncher.java:106)
        at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:431)
        at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1053)
        at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:795)
        at com.google.gwt.dev.DevMode.main(DevMode.java:282)
Caused by: java.lang.NoClassDefFoundError: com/google/appengine/tools/development/agent/AppEngineDevAgent
        at com.google.appengine.tools.development.DevAppServerFactory.testAgentIsInstalled(DevAppServerFactory.java:98)
        ... 7 more
Caused by: java.lang.ClassNotFoundException: com.google.appengine.tools.development.agent.AppEngineDevAgent
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        ... 8 more
Comment 1 Martin Balin 2016-07-07 08:53:27 UTC
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue.

Thanks for your cooperation,
NetBeans IDE 8.2 Release Boss

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