在Google云端存储中创建API访问后，ApiProxy $ ApplicationException：ApplicationError：8

Question

I had created a service account name with "can edit" to access the Google cloud storage. I used the sample application provided in Complete sample Application for java and deployed in app engine. when call the servlet in browser am getting error like this,

Uncaught exception from servlet
java.io.IOException
    at com.google.appengine.api.files.FileServiceImpl.translateException(FileServiceImpl.java:615)
    at com.google.appengine.api.files.FileServiceImpl.makeSyncCall(FileServiceImpl.java:588)
    at com.google.appengine.api.files.FileServiceImpl.create(FileServiceImpl.java:506)
    at com.google.appengine.api.files.FileServiceImpl.createNewGSFile(FileServiceImpl.java:153)
    at com.audioapp.ListpeopleServlet.doGet(ListpeopleServlet.java:36)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
    at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
    at java.lang.Thread.run(Thread.java:679)

Caused by: com.google.apphosting.api.ApiProxy$ApplicationException: ApplicationError: 8: 
    at java.lang.Thread.getStackTrace(Thread.java:1495)
    at com.google.apphosting.runtime.ApiProxyImpl.doSyncCall(ApiProxyImpl.java:240)
    at com.google.apphosting.runtime.ApiProxyImpl.access$000(ApiProxyImpl.java:66)
    at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java:183)
    at com.google.apphosting.runtime.ApiProxyImpl$1.run(ApiProxyImpl.java:180)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:180)
    at com.google.apphosting.runtime.ApiProxyImpl.makeSyncCall(ApiProxyImpl.java:66)
    at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:107)
    at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:56)
    at com.google.appengine.api.files.FileServiceImpl.makeSyncCall(FileServiceImpl.java:584)

can anyone suggest me to solve this.

Thanks in advance!

Answer 1

Did you grant access as explained in the docs [1] -> under 5. Give permissions to your bucket or objects. )?

Which SDK version do you use? Maybe it's an old SDK version that is causing this exception.

[1] https://developers.google.com/appengine/docs/java/googlestorage/overview