java 查找 Web 应用程序的类路径
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Finding the classpath of a web app
提问by Zemzela
When I'm working on my web app in Eclipse, I can search all the classes and JAR files with
当我在 Eclipse 中处理我的 Web 应用程序时，我可以搜索所有类和 JAR 文件
String cp = System.getProperty("java.class.path");
but when I deploy on Tomcat or Jetty, I get nothing.
但是当我部署在 Tomcat 或 Jetty 上时，我什么也没得到。
I want to find all *.propertiesfiles which are located in the webapp (either in the JAR or, if exploded, in folders).
我想找到*.properties位于 webapp 中的所有文件（在 JAR 中，或者如果分解，则在文件夹中）。
String cp = System.getProperty("java.class.path");
String pathSep = File.pathSeparator;
String[] jarOrDirectories = cp.split(pathSep);
for (String fileName : jarOrDirectories) {
File file = new File(fileName);
if (file.isFile()) {
logger.debug("From jar "+file.getName());
loadFromJar(file.getPath());
} else {
logger.debug("From folder "+file.getName());
listFolder(file);
}
}
This way, running the web application in Eclipse gives me all JAR files and all class folders, but not when I deploy the application in Tomcat.
这样，在 Eclipse 中运行 Web 应用程序会给我所有 JAR 文件和所有类文件夹，但当我在 Tomcat 中部署应用程序时不会。
It would be enough if I could just get the path to WEB_INF. From there, it's easy.
如果我能找到通往WEB_INF. 从那里，这很容易。
回答by Zemzela
If someone needs the answer, I found a very obvious answer.
如果有人需要答案，我找到了一个非常明显的答案。
getServletContext().getRealPath("/WEB-INF")
Then when you receive the real path you can easily search through the folders and JARs.
然后，当您收到真实路径时，您可以轻松地搜索文件夹和 JAR。
