Maven: resource binary changes file size after build

Question

I am using the appengine-maven-plugin to build my Java Google App Engine project.

I include .p12 certificates in a WEB-INF sub-folder

When I build my application, the filesize of the certificate increases by a few KB. This renders it invalid. I have seen the same happen to .jks certificates too.

I have verified the validity of the certificate pre-build and used the same method to confirm the invalidity of the post-build certificate.

Can anyone tell me why the file size is changing and why it is not simply copied to the WAR?

Thanks for your help.

Answer 1

Another solution is to disable filtering of .p12 files throughout your project by adding the following config:

<build>
  ...
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-resources-plugin</artifactId>                
      <configuration>
        <nonFilteredFileExtensions>
          <nonFilteredFileExtension>p12</nonFilteredFileExtension>
        </nonFilteredFileExtensions>
      </configuration>
    </plugin>
  </plugins>
</build>