Maven package structure changed after build Eclipse

Question

I created a Maven project in Eclipse. Initially my package structure was like

-src/main/java
---com.package1
---com.package2
-src/main/resources

When I build the project successfully and got war deployed in tomcat, My project structure changed to

-src.main.java.com.package1
-src.main.java.com.package2
-src.main.resources

This is generating errors in Java class files in packages import declarations. I want to restore my original project structure. I have m2eclipse plugin installed in Eclipse.

I also tried Maven>Update Project.. (I read somewhere on Stack Overflow that it will restore the original structure) but it is generating the following error

Failed while installing JAX-RS (REST Web Services) 1.1.
org.osgi.service.prefs.BackingStoreException: Resource /Workspace/ProjectName/.settings'      does not exist.

Please help how I can restore my project structure back.

Answer 1

The following helped in my context:

• Eclipse Luna (4.4.2) with Maven embedded
• Multi module project where folder structure is
  • parent P
    • module A
    • module B
• P is a normal Eclipse project while A and B are Maven projects
• P is a closed, A and B are opened
• the error happened in B with message Resource /P/B/.settings not available

After opening P again the error disappears and Project>Maven>Update Project... works fine.