前面的android-async-http下載zip檔案儲存或解壓有個問題：當我下載的zip檔案壓縮的只是一個文件時解壓或者儲存都正常，但是如果我的zip檔案含有很多子目錄或者有多層子目錄時，得到的zip檔案大小會變成0位元組，具體原因大概是因為read()方法只正對非壓縮檔案有效，有時間再去深究，這裡先貼出正確的下載並存儲同時解壓的程式碼

package com.example.chengvi.download;

import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import
 
 android.util.Log;

import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.File;
import
 
 java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import
 
 java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import cz.msebera.android.httpclient.Header;


public class MainActivity extends AppCompatActivity {
    String url = "http://192.168.8.2:8088/download/www.zip";
    private ZipEntry zipEntry = null;
    private ZipInputStream zipIn = null;
    private FileOutputStream fileOut = null;
    private int readedBytes = 0;
    private int total = 0;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        AsyncHttpClient client = new AsyncHttpClient();
        RequestParams params = new RequestParams();
        params.put("name", "java");
        client.get(url, params, new AsyncHttpResponseHandler() {
                @Override
                public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {
                    BufferedOutputStream bos = null;
                    FileOutputStream fos = null;
                    File file = null;
                    String filename = "zip.zip";
                    File zip_path = Environment.getExternalStoragePublicDirectory(
                            Environment.DIRECTORY_MOVIES);
                    try {
                        file = new File(zip_path.toString() + "/" + filename);
                        fos = new FileOutputStream(file);
                        bos = new BufferedOutputStream(fos);
                        bos.write(responseBody);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }


                    File zipFile = new File(zip_path + "/" + filename);
                    String unzip_path = zip_path + "/unzip/";
                    File file_unzip_path = new File(unzip_path);
                    if (!file_unzip_path.exists()) {
                        file_unzip_path.mkdir();
                    }

                    try {
                        upZip(zipFile,unzip_path);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }

                @Override
                public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) {
                    Log.d("fail", "fail");

                }
            });
        }


    public int upZip(File zipFile, String folderPath)throws ZipException,IOException {
        //public static void upZipFile() throws Exception{
        ZipFile zfile=new ZipFile(zipFile);
        Enumeration zList=zfile.entries();
        ZipEntry ze=null;
        byte[] buf=new byte[1024];
        while(zList.hasMoreElements()){
            ze=(ZipEntry)zList.nextElement();
            if(ze.isDirectory()){
                Log.d("upZipFile", "ze.getName() = "+ze.getName());
                String dirstr = folderPath + ze.getName();
                //dirstr.trim();
                dirstr = new String(dirstr.getBytes("8859_1"), "GB2312");
                Log.d("upZipFile", "str = "+dirstr);
                File f=new File(dirstr);
                f.mkdir();
                continue;
            }
            Log.d("upZipFile", "ze.getName() = "+ze.getName());
            OutputStream os=new BufferedOutputStream(new FileOutputStream(getRealFileName(folderPath, ze.getName())));
            InputStream is=new BufferedInputStream(zfile.getInputStream(ze));
            int readLen=0;
            while ((readLen=is.read(buf, 0, 1024))!=-1) {
                os.write(buf, 0, readLen);
            }
            is.close();
            os.close();
        }
        zfile.close();
        return 0;
    }


    public static File getRealFileName(String baseDir, String absFileName){
        String[] dirs=absFileName.split("/");
        File ret=new File(baseDir);
        String substr = null;
        if(dirs.length>1){
            for (int i = 0; i < dirs.length-1;i++) {
                substr = dirs[i];
                try {
                    //substr.trim();
                    substr = new String(substr.getBytes("8859_1"), "GB2312");

                } catch (UnsupportedEncodingException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                ret=new File(ret, substr);

            }
            Log.d("upZipFile", "1ret = "+ret);
            if(!ret.exists())
                ret.mkdirs();
            substr = dirs[dirs.length-1];
            try {
                //substr.trim();
                substr = new String(substr.getBytes("8859_1"), "GB2312");
                Log.d("upZipFile", "substr = "+substr);
            } catch (UnsupportedEncodingException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

            ret=new File(ret, substr);
            Log.d("upZipFile", "2ret = "+ret);
            return ret;
        }

        return ret;
    }

}