java在netbeans中哪里寻找文件？ 是否可以更改目录？

Question

So, I've got some txt files that I want to place in the following folder: src/test/resources/__files

However, when I run my project, I find that the compiler is looking for files in the project folder. Is there anyway of changing this as it becomes problematic when I try to create a JAR file - those files are then needed to be manually added to the target folder.

Thanks

Answer 1

Since you are already placing your resource files in the src/test/resources folder, Maven should make them available on the classpath at runtime. In this case, they should be on the classpath in your test build. You may try the following code:

String fileName = "somefile.txt";
ClassLoader classLoader = getClass().getClassLoader();
File file = new File(classLoader.getResource(fileName).getFile());

The Mkyong site does a good job of explaining how resources work in Maven.

Answer 2

You seem to be working with the maven build tool, with per convention src/main/java, src/main/resources and for unit tests src/test/java and src/test/resources.

And then the files are not real file system File, but resources, packaged possibly in a jar (as you said): case-sensitive, / path separator and read-only InputStream.

You could keep the file as resource (under /src/main/resources/ then), and use that file as template for a real File, at the application System.getProperty("user.dir") (working directory), or System.getProperty("user.home") (home directory), see System Properties .

InputStream in = .... .class.getResourceAsStream("___files/xyz.txt");

Or you could in maven copy from your own location to the target/distribution directory.

Answer 3

我在Windows上使用NetBeans，我写String url = "src\\\\test\\\\resources\\\\__files"文件夹结构ProjFolder\\src\\test\\resources\\__files