java 如何从jar中添加和读取资源文件
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how to add and read resource file from jar
提问by harshit
I have hibernate.cfg.xml and test.txt in the path which i read by java program. Now when i created the jar using maven those files were not present. So i read that i should put in the resources folder , so now my directory structure is
我在java程序读取的路径中有hibernate.cfg.xml和test.txt。现在，当我使用 maven 创建 jar 时，这些文件不存在。所以我读到我应该放在资源文件夹中，所以现在我的目录结构是
scr -> main-> java
->resources
scr -> main-> java
->resources
Now i can see the files in the jar but they are not inside resource folder it bascically
现在我可以看到 jar 中的文件，但它们基本上不在资源文件夹中
myjar.jar -> com (source code)
-> META -INF -> hibernate.cfg.xml -> test.txt
myjar.jar -> com（源代码）
-> META -INF -> hibernate.cfg.xml -> test.txt
I tried accessing using
我尝试访问使用
getClass().getResourceAsStream("test.txt")
getClass().getResourceAsStream("test.txt")
but got null..
但得到了空..
Let me know what steps are wrong ?
让我知道哪些步骤是错误的？
回答by pajton
getClass().getResourceAsStream(name)searches for the resource in the same dir as the class for which this method is called is in.
getClass().getResourceAsStream(name)在与调用此方法的类相同的目录中搜索资源。
For instance, you have class Aand resource test.txtin the same dir the you call getClass().getResourceAsStream("test.txt"). If it's located in some subdir, you need to express that in name: getClass().getResourceAsStream("subdir/test.txt").
例如，您在您调用的同一个目录中拥有类A和资源。如果它位于某个子目录中，则需要在: 中表示。test.txtgetClass().getResourceAsStream("test.txt")namegetClass().getResourceAsStream("subdir/test.txt")
I haven't tested that, but looking in dirs above current should be possible with: getClass().getResourceAsStream("../test.txt").
我没有测试过这一点，但看在高于目前迪尔斯应该是可能的：getClass().getResourceAsStream("../test.txt")。
回答by Raghuram
Looking at this article, Does getClass().getResourceAsStream("/test.txt")make a difference?
看了这篇文章，有getClass().getResourceAsStream("/test.txt")什么区别吗？
