如果使用Maven进行构建，则需要确保将图像实际放置到存档中.

If you are building using Maven, you'll want to make sure the image actually gets placed into the archive.

将资源放入您的src/main/resources目录.然后使用以下命令访问它们:

Put resources in your src/main/resources directory. Then access them with:

this.getClass().getResource("/logo.png"); 

或:

Thread.currentThread().getContextClassLoader().getResource("logo.png"); 

(以上注释中的代码示例，但请在答案中显示得更明显)

(Code samples from comment above, but put in the answer to be more visible)