压缩解压缩例子2

public class XZip {   
    public XZip(){   
    }   
    /**  
     * 取得压缩包中的 文件列表(文件夹,文件自选)  
     * @param zipFileString     压缩包名字  
     * @param bContainFolder    是否包括 文件夹  
     * @param bContainFile      是否包括 文件  
     * @return  
     * @throws Exception  
    */  
    public static java.util.List<java.io.File> GetFileList(String zipFileString, boolean bContainFolder, boolean bContainFile)throws Exception {   
        android.util.Log.v("XZip", "GetFileList(String)");   
        java.util.List<java.io.File> fileList = new java.util.ArrayList<java.io.File>();   
        java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(new java.io.FileInputStream(zipFileString));   
        java.util.zip.ZipEntry zipEntry;   
        String szName = "";   
       while ((zipEntry = inZip.getNextEntry()) != null) {   
            szName = zipEntry.getName();   
            if (zipEntry.isDirectory()) {   
                // get the folder name of the widget   
                szName = szName.substring(0, szName.length() - 1);   
                java.io.File folder = new java.io.File(szName);   
                if (bContainFolder) {   
                    fileList.add(folder);   
                }   
            } else {   
                java.io.File file = new java.io.File(szName);   
                if (bContainFile) {   
                    fileList.add(file);   
                }   
            }   
        }//end of while   
        inZip.close();   
        return fileList;   
    }   
    /**  
     * 返回压缩包中的文件InputStream  
     * @param zipFileString     压缩文件的名字  
     * @param fileString    解压文件的名字  
     * @return InputStream  
     * @throws Exception  
     */  
    public static java.io.InputStream UpZip(String zipFileString, String fileString)throws Exception {   
        android.util.Log.v("XZip", "UpZip(String, String)");   
        java.util.zip.ZipFile zipFile = new java.util.zip.ZipFile(zipFileString);   
        java.util.zip.ZipEntry zipEntry = zipFile.getEntry(fileString);   
        return zipFile.getInputStream(zipEntry);   
    }  

    /**  
     * 解压一个压缩文档 到指定位置  
     * @param zipFileString 压缩包的名字  
     * @param outPathString 指定的路径  
     * @throws Exception  
     */  
    public static void UnZipFolder(String zipFileString, String outPathString)throws Exception {   
        android.util.Log.v("XZip", "UnZipFolder(String, String)");   
        java.util.zip.ZipInputStream inZip = new java.util.zip.ZipInputStream(new java.io.FileInputStream(zipFileString));   
        java.util.zip.ZipEntry zipEntry;   
        String szName = "";   

        while ((zipEntry = inZip.getNextEntry()) != null) {   
            szName = zipEntry.getName();   

            if (zipEntry.isDirectory()) {   

                // get the folder name of the widget   
                szName = szName.substring(0, szName.length() - 1);   
                java.io.File folder = new java.io.File(outPathString + java.io.File.separator + szName);   
                folder.mkdirs();   

            } else {   

                java.io.File file = new java.io.File(outPathString + java.io.File.separator + szName);   
                file.createNewFile();   
                // get the output stream of the file   
                java.io.FileOutputStream out = new java.io.FileOutputStream(file);   
                int len;   
                byte[] buffer = new byte[1024];   
                // read (len) bytes into buffer   
                while ((len = inZip.read(buffer)) != -1) {   
                    // write (len) byte from buffer at the position 0   
                    out.write(buffer, 0, len);   
                    out.flush();   
                }   
                out.close();   
            }   
        }//end of while   

        inZip.close();   

    }//end of func   


    /**  
     * 压缩文件,文件夹  
     * @param srcFileString 要压缩的文件/文件夹名字  
     * @param zipFileString 指定压缩的目的和名字  
     * @throws Exception  
     */  
    public static void ZipFolder(String srcFileString, String zipFileString)throws Exception {   
        android.util.Log.v("XZip", "ZipFolder(String, String)");   

        //创建Zip包   
        java.util.zip.ZipOutputStream outZip = new java.util.zip.ZipOutputStream(new java.io.FileOutputStream(zipFileString));   

        //打开要输出的文件   
        java.io.File file = new java.io.File(srcFileString);   

        //压缩   
        ZipFiles(file.getParent()+java.io.File.separator, file.getName(), outZip);   

        //完成,关闭   
        outZip.finish();   
        outZip.close();   

    }//end of func   

    /**  
     * 压缩文件  
     * @param folderString  
     * @param fileString  
     * @param zipOutputSteam  
     * @throws Exception  
     */  
    private static void ZipFiles(String folderString, String fileString, java.util.zip.ZipOutputStream zipOutputSteam)throws Exception{   
        android.util.Log.v("XZip", "ZipFiles(String, String, ZipOutputStream)");   

        if(zipOutputSteam == null)   
            return;   

        java.io.File file = new java.io.File(folderString+fileString);   

        //判断是不是文件   
        if (file.isFile()) {   

            java.util.zip.ZipEntry zipEntry =  new java.util.zip.ZipEntry(fileString);   
            java.io.FileInputStream inputStream = new java.io.FileInputStream(file);   
            zipOutputSteam.putNextEntry(zipEntry);   

            int len;   
            byte[] buffer = new byte[4096];   

            while((len=inputStream.read(buffer)) != -1)   
            {   
                zipOutputSteam.write(buffer, 0, len);   
            }   

            zipOutputSteam.closeEntry();   
        }   
        else {   

            //文件夹的方式,获取文件夹下的子文件   
            String fileList[] = file.list();   

            //如果没有子文件, 则添加进去即可   
            if (fileList.length <= 0) {   
                java.util.zip.ZipEntry zipEntry =  new java.util.zip.ZipEntry(fileString+java.io.File.separator);   
                zipOutputSteam.putNextEntry(zipEntry);   
                zipOutputSteam.closeEntry();                   
            }   

            //如果有子文件, 遍历子文件   
            for (int i = 0; i < fileList.length; i++) {   
                ZipFiles(folderString, fileString+java.io.File.separator+fileList[i], zipOutputSteam);   
            }//end of for   

        }//end of if   

    }//end of func   

    public void finalize() throws Throwable {   

    }   
}