在Java中解压缩文件时的ZipException

Question

我对使用Java处理zip文件完全是新鲜的，我遇到了一个奇怪的情况。

下面是我正在使用的解压方法：

public void unzip(File zipFile, File rootDir) throws IOException
{
    ZipFile zip = new ZipFile(zipFile);
    Enumeration<ZipEntry> entries = (Enumeration<ZipEntry>) zip.entries();

    while(entries.hasMoreElements()) {
        ZipEntry entry = entries.nextElement();
        java.io.File f = new java.io.File(rootDir, entry.getName());
        if (entry.isDirectory()) { // if its a directory, create it
            continue;
        }

        if (!f.exists()) {
            f.getParentFile().mkdirs();
            f.createNewFile();
        }

        /*BufferedInputStream bis = new BufferedInputStream(zip.getInputStream(entry)); // get the input stream
        BufferedOutputStream bos = new BufferedOutputStream(new java.io.FileOutputStream(f));
        while (bis.available() > 0) {  // write contents of 'is' to 'fos'
            bos.write(bis.read());
        }
        bos.close();
        bis.close();*/

        InputStream is = zip.getInputStream(entry);
        OutputStream os = new java.io.FileOutputStream(f);
        byte[] buf = new byte[4096];
        int r ;
        while ((r = is.read(buf)) != -1) {
            os.write(buf, 0, r);
        }
        os.close();
        is.close();
    }   
}

信息jvm 1 201 2/11/30 01:58:05 at java.util.zip.zipfile.(zipfile.java:127)

信息jvm 1 201 2/11/30 01:58:05 at java.util.zip.zipfile.(zipfile.java:143)

有人能帮我吗？

更新：

我使用Linux作为测试环境。解压目录的权限是drwxr-xr-x-

更新02：

Answer 1

你能试试这个方法吗：

private void unzip() throws IOException {
    int BUFFER = 2048;
    BufferedOutputStream dest = null;
    BufferedInputStream is = null;
    ZipEntry entry;
    ZipFile zipfile = new ZipFile("latest.zip");
    Enumeration e = zipfile.entries();
    (new File(root)).mkdir();
    while (e.hasMoreElements()) {
        entry = (ZipEntry) e.nextElement();
        //outText.setText(outText.getText() + "\nExtracting: " + entry);
        if (entry.isDirectory()) {
            (new File(root + entry.getName())).mkdir();
        } else {
            (new File(root + entry.getName())).createNewFile();
            is = new BufferedInputStream(zipfile.getInputStream(entry));
            int count;
            byte data[] = new byte[BUFFER];
            FileOutputStream fos = new FileOutputStream(root + entry.getName());
            dest = new BufferedOutputStream(fos, BUFFER);
            while ((count = is.read(data, 0, BUFFER)) != -1) {
                dest.write(data, 0, count);
            }
            dest.flush();
            dest.close();
            is.close();
        }
    }
}