Compiler error “archive for required library could

Question

I am starting to configure my development environment and I am using Spring Tool Suite 2.8.1 along with m2E 1.01.

As far as I can tell, since this is a Maven Project (my first), my Maven POM is dictating (along with m2E smarts) my project build configuration and dependencies.

What I would like to know is why my IDE is displaying Java Build Problems that read "Archive required for library library/path/somejar.jar cannot be read or is not a valid zip file" when I can see the jars in my .m2 repository?

All the errors pertained to commons-logging:1.1.1 which I excluded in my parent-pom. This was a transistive dependancy via spring-context-support:3.0.5. I excluded that library from my build and now the errors pertain to the spring-context-support library.

I have attached a screenshot to illustrate.

Answer 1

Indeed IDEs often cache the local repository (Eclipse does something similar, and I have to relaunch Eclipse).

One ugly maven behavior you might encounter is that if you declare a dependency before you actually install it, maven will create an empty version of the missing dependency (folder with metadata but no jar), and you will have to manually clean your .m2 repository.

Third, an installed archive (jar...) can get corrupted, so try to open it with any archive tool (7zip...) to test it, and delete the whole folder if the archive is corrupted.

Answer 2

Delete corrupted files from your local .m2 repository and Ctrl+F5 (Update Maven Project) in Eclipse/STS. It'll download and install these files.

Answer 3

This could be due to you have added spring-licence.txt file to your web app libraries.

I had similar issue and resolved after removing that text file. In libraries it will expect jar file only.

Answer 4

I was using Eclipse as IDE and I was getting very same error. I had to do Project->Maven->Update Project. Select all the checkboxes below except "offline" esp. the one "Force update of snapshots/releases" and click OK. Did the Clean Build for the Project again.

Answer 5

I was facing the same problem with my project.

My project was not able to find this archive: -

C:\Users\rakeshnarang\.m2\repository\org\hibernate\hibernate-core\5.3.7.Final

I went to this directory and deleted this folder.

Went back to eclipse and hit ALT + F5 to update the project.

The jar file was downloaded again and the problem was solved.

You should try this.

Answer 6

For Googlers:

In my case I had accidentally manually added a Java class to the build path while poking around Eclipse. By taking a look at the 'Configure Build Path...> Libraries I removed the culprit class and now only have the

• JRE System Library
• Maven Dependencies

and nothing is complaining.