annotation processor couldnot get StandardLocation.SOURCE_PATH correctly

[nuclearg]

I wrote a annotation processor which reads raw .java source files to do some work, it works well.

Now because of some reason, I changed to invoke the apt using this plugin, then compilation failed.

FileObject fo = this.processingEnv.getFiler().getResource(StandardLocation.SOURCE_PATH, "", filename);

This statement could not return results but a FileNotFoundException.

Could someone help? Thanks!

[Shredder121]

Could you give us an example project, that we can test?