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POjava.util.zip - Recreating directory structure
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copied!<p>While trying to zip an archive using the <code>java.util.zip</code> I ran into a lot of problems most of which I solved. Now that I finally get some output I struggle with getting the "right" output. I have an extracted ODT file (directory would be more fitting a description) to which I did some modifications. Now I want to compress that directory as to recreate the ODT file structure. Zipping the directory and renaming it to end with .odt works fine so there should be no problem.</p> <p>The main problem is that I lose the internal structure of the directory. Everything becomes "flat" and I do not seem to find a way to preserve the original multi-layered structure. I would appreciate some help on this as I can not seem to find the problem.</p> <p>Here are the relevant code snippets:</p> <pre><code>ZipOutputStream out = new ZipOutputStream(new FileOutputStream( FILEPATH.substring(0, FILEPATH.lastIndexOf(SEPARATOR) + 1).concat("test.zip"))); compressDirectory(TEMPARCH, out); </code></pre> <p>The <code>SEPARATOR</code> is the system file separator and the <code>FILEPATH</code> is the filepath of the original ODT which I will override but have not done here for testing purposes. I simply write to a test.zip file in the same directory.</p> <pre><code>private void compressDirectory(String directory, ZipOutputStream out) throws IOException { File fileToCompress = new File(directory); // list contents. String[] contents = fileToCompress.list(); // iterate through directory and compress files. for(int i = 0; i < contents.length; i++) { File f = new File(directory, contents[i]); // testing type. directories and files have to be treated separately. if(f.isDirectory()) { // add empty directory out.putNextEntry(new ZipEntry(f.getName() + SEPARATOR)); // initiate recursive call compressDirectory(f.getPath(), out); // continue the iteration continue; }else{ // prepare stream to read file. FileInputStream in = new FileInputStream(f); // create ZipEntry and add to outputting stream. out.putNextEntry(new ZipEntry(f.getName())); // write the data. int len; while((len = in.read(data)) > 0) { out.write(data, 0, len); } out.flush(); out.closeEntry(); in.close(); } } } </code></pre> <p>The directory that contains the files to zip is somewhere in the user space and not in the same directory as the resulting file. I assume this could be trouble but I can not really see how. Also I figured that the problem could be in using the same stream for outputting but again I can not see how. I saw in some examples and tutorials that they use <code>getPath()</code> instead of <code>getName()</code> but changing that gives me an empty zip file.</p>

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