使用java.util.zip包壓縮和解壓縮文件

        File file = new File("F:/zippath.zip");
        ZipFile zipFile = new ZipFile(file);
        System.out.println("壓縮文件的名稱為：" + zipFile.getName());

壓縮單個文件

    /** 壓縮單個文件*/
    public static void ZipFile(String filepath ,String zippath) {
        try {
            File file = new File(filepath);
            File zipFile = new File(zippath);
            InputStream input = new FileInputStream(file);
            ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
            zipOut.putNextEntry(new ZipEntry(file.getName()));
            int temp = 0;
            while((temp = input.read()) != -1){
                zipOut.write(temp);
            }
            input.close();
            zipOut.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

應用：

ZipFile("d:/hello.txt", "d:/hello.zip");

壓縮多個文件（文件夾）

    /** 一次性壓縮多個文件，文件存放至一個文件夾中*/
    public static void ZipMultiFile(String filepath ,String zippath) {
        try {
            File file = new File(filepath);// 要被壓縮的文件夾
            File zipFile = new File(zippath);
            InputStream input = null;
            ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
            if(file.isDirectory()){
                File[] files = file.listFiles();
                for(int i = 0; i < files.length; ++i){
                    input = new FileInputStream(files[i]);
                    zipOut.putNextEntry(new ZipEntry(file.getName() + File.separator + files[i].getName()));
                    int temp = 0;
                    while((temp = input.read()) != -1){
                        zipOut.write(temp);
                    }
                    input.close();
                }
            }
            zipOut.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

應用：

ZipMultiFile("f:/uu", "f:/zippath.zip");

解壓縮單個文件

    /**  解壓縮（解壓縮單個文件）*/
    public static void ZipContraFile(String zippath ,String outfilepath ,String filename) {
        try {
            File file = new File(zippath);//壓縮文件路徑和文件名
            File outFile = new File(outfilepath);//解壓后路徑和文件名
            ZipFile zipFile = new ZipFile(file);
            ZipEntry entry = zipFile.getEntry(filename);//所解壓的文件名
            InputStream input = zipFile.getInputStream(entry);
            OutputStream output = new FileOutputStream(outFile);
            int temp = 0;
            while((temp = input.read()) != -1){
                output.write(temp);
            }
            input.close();
            output.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

應用：

ZipContraFile("d:/hello.zip","d:/eee.txt", "hello.txt");

 解壓縮多個文件

    /**  解壓縮（壓縮文件中包含多個文件）可代替上面的方法使用。
     * ZipInputStream類
     * 當我們需要解壓縮多個文件的時候，ZipEntry就無法使用了，
     * 如果想操作更加復雜的壓縮文件，我們就必須使用ZipInputStream類
     * */
    public static void ZipContraMultiFile(String zippath ,String outzippath){
        try {
            File file = new File(zippath);
            File outFile = null;
            ZipFile zipFile = new ZipFile(file);
            ZipInputStream zipInput = new ZipInputStream(new FileInputStream(file));
            ZipEntry entry = null;
            InputStream input = null;
            OutputStream output = null;
            while((entry = zipInput.getNextEntry()) != null){
                System.out.println("解壓縮" + entry.getName() + "文件");
                outFile = new File(outzippath + File.separator + entry.getName());
                if(!outFile.getParentFile().exists()){
                    outFile.getParentFile().mkdir();
                }
                if(!outFile.exists()){
                    outFile.createNewFile();
                }
                input = zipFile.getInputStream(entry);
                output = new FileOutputStream(outFile);
                int temp = 0;
                while((temp = input.read()) != -1){
                    output.write(temp);
                }
                input.close();
                output.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

應用：

        ZipContraMultiFile("f:/zippath.zip", "d:/");
        ZipContraMultiFile("d:/hello.zip", "d:/");