Exception while using JavaMail with Google AppEngine: How to fix this??

Question

Hi All,

I am trying to write a Java program using JavaMail to send an email between 2 users. I have NOT added mail.jar and activation.jar files to my appengine project as I read somewhere that this would cause exceptions to be thrown since the functionality is already available with the appengine .jar files. But my program is throwing the following exception:-

Exception in thread "main" com.google.apphosting.api.ApiProxy$CallNotFoundException: The API package 'mail' or call 'Send()' was not found. - Hide quoted text -

at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:95) at com.google.apphosting.api.ApiProxy.makeSyncCall(ApiProxy.java:48) at com.google.appengine.api.mail.MailServiceImpl.doSend(MailServiceImpl.java:95) at com.google.appengine.api.mail.MailServiceImpl.send(MailServiceImpl.java:32) at com.google.appengine.api.mail.stdimpl.GMTransport.sendMessage(GMTransport.java:247) at javax.mail.Transport.send(Transport.java:95) at javax.mail.Transport.send(Transport.java:48) at weatherForecast.SendEmail.main(SendEmail.java:40)

I read in the following post: http://forums.smartclient.com/showthread.php?t=8589 that I need to remove appengine .jar files from my project to make things work. But my web application also involves rendering a .jsp file populated with some data which is the welcoming page of my Google App when deployed on google appengine and the project fails to work once I remove the .jars. It does help me in getting rid of the exception though. Can anyone please suggest a way to write an email program and make it work on a google appengine project?

Thanks! Harini

Answer 1

It is likely you are still somehow accidentally including a .jar file that shouldn't be included.

Right click on your project folder and check:

• Properties -> java build path
• Properties -> JEE Module dependencies

And also make sure you the jar is not in /war/WEB-INF/lib/, jars that should not be uploaded to google should be stored in a separate location of your project, i recommend /lib/.