Create a new file in maven resource folder

Question

this.getClass().getResource("file path")

I know this will access the file in maven's resource folder.

But how can I create a new file in maven resource folder.

Answer 1

您不能简单地将类路径映射到URL或JAR文件，并且无法在现有的JAR或远程URL中“创建”资源。

Answer 2

If you know that the class file for the given class won't be loaded from a JAR file when its code executes, you can use something like this:

File file = new File(getClass().getResource(filename).toURI());
file.createNewFile();

This pattern can be useful in unit test code, which typically executes before any class files are packed into a jar.

Note that you may need to wrap this in a try-catch block, because the URL.toURI() method may throw a URISyntaxException. However, for test code, you might just want to add a throws clause to the method declaration.