java 如何从我的 WAR 中的 classes 目录读取文件？
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How can I read file from classes directory in my WAR?
提问by newbie
I need to read text file from the classpath in Java WAR application. How can I read it as InputStream. File is located in /WEB-INF/classes/ folder, but when I use following code, it just returns null.
我需要从 Java WAR 应用程序的类路径中读取文本文件。我怎么能把它读作 InputStream。文件位于 /WEB-INF/classes/ 文件夹中，但是当我使用以下代码时，它只返回 null。
InputStream input = servletContext.getClass().getClassLoader().getResourceAsStream("my_filename.txt");
回答by Bozho
Prefix it with a forward slash to denote the root of the classpath:
用正斜杠作为前缀来表示类路径的根：
getResourceAsStream("/my_filename.txt")
Alternatively, you can use the serlvetContext.getResourceAsStream(..)which looks for resources relative to the context root. So classes would be /WEB-INF/classes.
或者，您可以使用serlvetContext.getResourceAsStream(..)which 查找相对于上下文根的资源。所以类将是/WEB-INF/classes.
