Question

我确信那里有一个成熟的，广泛使用的ZIP文件工具，我似乎无法找到。与Apache Commons，Google Collections，Joda Time具有相同成熟度的东西

我正在尝试将zip文件作为字节数组（ZipInputStream）进行最简单的任务，并将其解压缩到一个文件夹中。这似乎是一项非常乏味的任务。

我希望有一个语法糖API可以像这样做一些：

public class MyDreamZIPUtils 
      public static void extractToFolder(ZipInputStream zin, File outputFolderRoot){
           ...
      }
      public static void extractToFolder(ZipFile zf, File outputFolderRoot){
           ...
      }

      public static zipFolder(File folderToZip, File zippedFileLocation){
           ...
      }

      public static zipFolder(File folderToZip, ByteArrayOutputStream zipResult){
           ...
      }

这样的事吗？我错过了什么吗？

Answer 1

http://commons.apache.org/compress/

我相信你可以在上面写上“语法糖”。

Javadoc：http://commons.apache.org/compress/apidocs/index.html

Answer 2

我只使用Java API调用...我没有做你所有的方法。你可以从这里弄清楚...请注意我并不声称代码没有错误...使用风险自负：）

    public static void extractToFolder(ZipInputStream zin, File outputFolderRoot)
                throws IOException {

            FileOutputStream fos = null;
            byte[] buf = new byte[1024];
            ZipEntry zipentry;

            for (zipentry = zin.getNextEntry(); zipentry != null; zipentry = zin.getNextEntry()) {

                try {
                    String entryName = zipentry.getName();
                    System.out.println("Extracting: " + entryName);
                    int n;

                    File newFile = new File(outputFolderRoot, entryName);
                    if (zipentry.isDirectory()) {
                        newFile.mkdirs();
                        continue;
                    } else {
                        newFile.getParentFile().mkdirs();
                        newFile.createNewFile();
                    }

                    fos = new FileOutputStream(newFile);

                    while ((n = zin.read(buf, 0, 1024)) > -1)
                        fos.write(buf, 0, n);

                    fos.close();
                    zin.closeEntry();
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    if (fos != null)
                        try {
                            fos.close();
                        } catch (Exception ignore) {
                        }
                }

            }

            zin.close();

        }


    public static void zipFolder(File folderToZip, File zippedFileLocation) throws IOException {
        // create a ZipOutputStream to zip the data to
        ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zippedFileLocation));
        String path = "";
        zipDir(folderToZip, zos, path);
        // close the stream
        zos.close();
    }

    private static void zipDir(File directory, ZipOutputStream zos, String path) throws IOException {
        File zipDir = directory;
        // get a listing of the directory content
        String[] dirList = zipDir.list();
        byte[] readBuffer = new byte[2156];
        int bytesIn = 0;
        // loop through dirList, and zip the files
        for (int i = 0; i < dirList.length; i++) {
            File f = new File(zipDir, dirList[i]);
            if (f.isDirectory()) {
                zipDir(new File(f.getPath()), zos, path + f.getName() + "/");
                continue;
            }
            FileInputStream fis = new FileInputStream(f);
            try {
                ZipEntry anEntry = new ZipEntry(path + f.getName());
                zos.putNextEntry(anEntry);
                bytesIn = fis.read(readBuffer);
                while (bytesIn != -1) {
                    zos.write(readBuffer, 0, bytesIn);
                    bytesIn = fis.read(readBuffer);
                }
            } finally {
                fis.close();
            }
        }
    }

参考Java2s

Zip / Unzip Java实用程序的“Jodatime”/“Apache commons”是什么？

2 个答案: