使用类加载器访问其他文件夹

Question

 URL root = Thread.currentThread().getContextClassLoader().getResource(packageName.replace(".", "/"));

i use the above statement to access .class files given a package name. But in some cases i need to access the files from \\build\\test\\classes instead of \\build\\classes . How do i modify the above statement?

Answer 1

You are having problems with your classpath. ${project}/build/test/classes and ${project}/build/classes folders suggest that you have either used Ant to compile your code, or checked "Allow output folders for source folders" option in Eclipse's "New Java Project" dialog.

You should configure you project to compile all source files into the same output folder, in your case /build/classes .

If you use classloader to load a resource the path you give it is not absolute to entire filesystem even if it starts with / .

InputStream is = this.getClass().getResourceAsStream("/some/resource");

This actually means find this file ${project}/build/classes/some/resource . And in order to get that resource at the target location the easiest way is to place it in ${project}/src/some/resource .

Although you should consider using Maven and m2eclipse if your using Eclipse.