Agfdhyk

I used to use this method to read text files in my maven's resources/ directory, so that I can use relative path:

public static BufferedReader fileReaderAsResource(String filePath) throws IOException {

        InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(filePath);

        if (is == null) {

            throw new FileNotFoundException(" Not found: " + filePath);

        }

        return new BufferedReader(new InputStreamReader(is, DEFAULT_ENCODING));

    }

Now I need to read zip file due to its size and I still want to use relative path to file in my "resources" directory. Is there a way to do this?

I have this method to read zip file, but it only reads in file through absolute path:

public static BufferedReader fileZipReader(String fileName) throws IOException, URISyntaxException {

        URL zipUrl = IOUtils.class.getClassLoader().getResource(fileName);

        File zipFile = new File(zipUrl.toURI());

        ZipFile zip = new ZipFile(zipFile);

        for (Enumeration e = zip.entries(); e.hasMoreElements(); ) {

            ZipEntry zipEntry = (ZipEntry) e.nextElement();

            if (!zipEntry.isDirectory()) {

                return new BufferedReader(new InputStreamReader(zip.getInputStream(zipEntry)));

            }

        }

        throw new FileNotFoundException("File not found: " + fileName);

    }

How to read zip file through relative path to my standard maven's resources/ directory?

You can wrap an InputStream with a ZipInputStream, i.e. :

InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(filePath);

if (is == null) {

    throw new FileNotFoundException(" Not found: " + filePath);

}

ZipInputStream zis = new ZipInputStream(is);

EDIT:

Use the method above named as "fileReaderZipAsResource", I read the file normally:

try {

            BufferedReader br = fileReaderZipAsResource(qaFilePath);

            String line;

            while ((line = br.readLine()) != null) {

                if (line.isEmpty()) {

                    throw new RuntimeException("Invalid entry ... 2");

                }

                line = line.trim();

                textKGKB.add(line);

            }

        } catch (IOException ioe) {

            ioe.printStackTrace();

        }

But the debugging shows that the program doesn't enter the loop. It simply pass by the loop and continue the logic, without throwing an exception either. My text file is a 4-column text file delimited with tab key. I simply zip it and name it as xyy.zip, and pass it as parameter to the method above.

What's the problem? Does the wrapping of ZipInputStream really work?