在IProject中搜索文件 - Eclipse

Question

I need to find a specific file present in eclipse project which is in classpath of project.

I have IProject instance but Dont know how to get IFile instance

Answer 1

The IProject interface extends the IContainer which has several findMember methods. You get an IResource which can be casted down to IFile after checking its' type using getType . Go over those interfaces, they are properly documented.

Answer 2

I was facing the same problem and this is in short what i did:

IResource getResource(IProject project, String folderPath, String fileName) {

    IJavaProject javaProject = JavaCore.create(project);
    for (IPackageFragmentRoot root : javaProject.getAllPackageFragmentRoots()) {
        IPackageFragment folderFragment = root.getPackageFragement(folderPath);
        IResource folder = folderFragment.getResource();
        if (folder == null || ! folder.exists() || !(folder instanceof IContainer)) {
            continue;
        }

        IResource resource = ((IContainer) folder).findMember(fileName);
        if (resource.exists()) {
            return resource;
        }
    }

    // file not found in any source path
    return null;
}

It looks pretty ugly and maybe there's a more direct approach. But it works.

If you need to use the classpath, you have to use IJavaProject and the way fragments work prevents directly searching for the file path, because it will assume the "." (period) in a file name is a java package separator. So i guess you have to first get the right folder and then the file.