Reading a text file in war archive [duplicate]

Answer 1

If you want to get the java File object, you can try this:

String path = Thread.currentThread().getContextClassLoader().getResource("language/file.xml").getPath();
File f = new File(path);
System.out.println(f.getAbsolutePath());

Answer 2

Try to avoid the File, as this is for reading things from the file system.

As your resource is bundled into the WAR, you can access it via the classloader.

Ensure that the resource is bundled into your WEB-INF/classes folder.

InputStream in =
new InputStreamReader(FileLoader.class.getClassLoader().getResourceAsStream("/resources/email/file.txt") );

This is a good blog on the topic

http://haveacafe.wordpress.com/2008/10/19/how-to-read-a-file-from-jar-and-war-files-java-and-webapp-archive/

Answer 3

I prefer this approach:

InputStream inputStream = getClass().getResourceAsStream("/resources/email/file.txt");

if (inputStream != null) {
    try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
       ...
    } catch ...
} else ...

Three reasons:

• it supports both: loading resources from an absolute path and from a relative path (starting from the given class) -- see also this answer
• the way to obtain the stream is one step shorter
• it utilizes the try-with-resources statement to implicitly close the underlying input stream

Answer 4

Try below:

   InputStream inputStream = 
      getClass().getClassLoader().getResourceAsStream("/resources/email/file.txt");
   BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream ));