我按照文档的内容做了 helloworld.py和app.yaml文件 然后在命令符中用这个dev_appserver.py helloworld/ 命令运行 然后就出来could not read datastore data form c:\...\...\dev_appserver.datastore 最后在http://localhost:8080这样 出来的也是错误的 哪里出错了 高手女侠 帮一下我 At 2011-03-28 15:45:17，radomir <[email protected]> wrote: >The problem appears caused by class loading conflict after some update >on GAE/J. > >I managed to workaround the issue repackaging Apache HttpClient that >I'm using. For interested, here's my post with details: >http://radomirml.com/2011/03/27/fixing-strange-noclassdeffounderror-on-app-engine > > > >On Mar 26, 10:32 am, radomir <[email protected]> wrote: >> This looks somehow related to some changes on GAE as the problem is >> now spread to apps on MS. My production version of the app deployed 4 >> days ago and used without issues is failing with the same issue since >> 2011-03-26 02:46:29 (GMT). >> >> I tracked the issue down to: >> >> Caused by: java.lang.ClassNotFoundException: >> org.apache.james.mime4j.message.Body >> at java.net.URLClassLoader$1.run(URLClassLoader.java:217) >> at java.security.AccessController.doPrivileged(Native Method) >> at java.net.URLClassLoader.findClass(URLClassLoader.java:205) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:321) >> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:266) >> ... 26 more >> >> Now, the problem is I don't reference this class anywhere in my code >> and I can't find reference in included libraries. As far as I >> remember, this class was required by older versions of Apache >> HttpClient 4.0 that I do use but newer versions have removed >> dependency on James. >> >> Any thoughts? >> >> On Mar 26, 3:37 am, Christopher Hilla <[email protected]> >> wrote: >> >> >> >> >> >> >> >> > Can you attach a log or stack trace where this error occurs? >> >> > --Chris >> >> > On Fri, Mar 25, 2011 at 3:07 AM, radomir <[email protected]> wrote: >> > > Hi, >> >> > > For one of my apps that was running fine yesterday GAE started >> > > throwing NoClassDefFoundError about few hours ago and the app is >> > > totally broken now! I've tried switching to older version, deploying a >> > > new version but it didn't help. >> >> > > Google, please help! The app is on HR and has enabled billing. (I >> > > already filled billing issue sending app id.) >> >> > > Anyone else seeing this issue? >> >> > > Thanks. >> >> > > -- >> > > You received this message because you are subscribed to the Google Groups >> > > "Google App Engine" group. >> > > To post to this group, send email to [email protected]. >> > > To unsubscribe from this group, send email to >> > > [email protected]. >> > > For more options, visit this group at >> > >http://groups.google.com/group/google-appengine?hl=en. > >-- >You received this message because you are subscribed to the Google Groups >"Google App Engine" group. >To post to this group, send email to [email protected]. >To unsubscribe from this group, send email to >[email protected]. >For more options, visit this group at >http://groups.google.com/group/google-appengine?hl=en. >
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