ClassPathResource 未获取类路径
在我的应用程序中，我想使用文件夹 media/src/main/resources/testMediaExif 中存在的资源
为了获取该路径，我使用了位于 media 中的这段代码/src/main/java/com/project/MyClass.java：
ClassPathResource resource = new ClassPathResource("classpath:testMediaExif");
File file = resource.getFile();
String absolutePath = file.getAbsolutePath();
显示的错误是：
java.io.FileNotFoundException: class path resource [classpath:testMediaExif] cannot be resolved to URL because it does not exist
如果我更改该代码：
ClassPathResource resource = new ClassPathResource("testMediaExif");
变量absolutePath采用这个值：
/Users/blanca/desarrollo/media/target/test-classes/testMediaExif
为什么它指向目标路径？我怎样才能改变它？
In my application, I would like to use a resource that exist in a folder media/src/main/resources/testMediaExif
To get that path, I used this piece of code, located in media/src/main/java/com/project/MyClass.java:
ClassPathResource resource = new ClassPathResource("classpath:testMediaExif");
File file = resource.getFile();
String absolutePath = file.getAbsolutePath();
The error shown is:
java.io.FileNotFoundException: class path resource [classpath:testMediaExif] cannot be resolved to URL because it does not exist
If I change that code:
ClassPathResource resource = new ClassPathResource("testMediaExif");
The variable absolutePath takes this value:
/Users/blanca/desarrollo/media/target/test-classes/testMediaExif
Why does it point to the target path? How could I change it?
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new ClassPathResource("classpath:testMediaExif")有两个问题：classpath:前缀仅在配置文件（例如 XML 文件）中使用，不应使用如果您直接使用ClasspathResource。classpath:testMediaExif引用类路径根目录中的资源，而不是相对于您在其中进行引用的文件。试试这个：
或者
这些将构造一个相对于
MyClass的对名为testMediaExif的资源的引用。还有一件事：
ClasspathResource.getFile()只能在资源确实是文件的情况下工作。如果它打包在 JAR 中，那么它就不起作用。There are two problems with
new ClassPathResource("classpath:testMediaExif"):classpath:prefix is only used in config files (e.g. XML files), and should not be used if you're usingClasspathResourcedirectly.classpath:testMediaExifrefers to a resource in the root of the classpath, not relative to the file in which you're making the reference.Try this instead:
or
These will construct a refernce to a resource called
testMediaExifrelative toMyClass.One more thing:
ClasspathResource.getFile()will only work in the resource really is a file. If it's packed in a JAR, then it won't work.我的猜测是绝对路径问题是由于 maven POM 目标中的 outputDirectory 造成的。在我的项目中，outputDirectory war/WEB-INF/classes 是从这里执行类的。如果我将其更改为某个垃圾值，该类将不再被执行。
所以我相信绝对路径必须与 .class 文件的位置有关。希望这有帮助。
My guess is that the absolute path issue is because of the outputDirectory in the target of your maven POM . In my project the outputDirectory war/WEB-INF/classes and the it is from here the classes get executed . If I change it to some junk value , the class no longer gets executed .
So I believe the absolute path has to do something with the location of your .class files . Hope this helps .