从HTTP地址下载.zip文件 解析GZIP文件

package com.example.zipjiexitest;

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.zip.CRC32;
import java.util.zip.CheckedInputStream;
import java.util.zip.GZIPInputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.Menu;
import android.widget.TextView;

public class ZIPActivity extends Activity {

    private TextView tv;
    private String str;
    private Handler handler;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_zip);
        tv=(TextView)findViewById(R.id.tv);
//        unbyte();
//        new Thread(thread).start();
       try {
        this.zipdecompress();
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
        handler=new Handler(){
            @Override
            public void handleMessage(Message msg) {
                // TODO Auto-generated method stub
                super.handleMessage(msg);
                tv.setText(str);
                
            }
        };
    }
    private Runnable thread=new Runnable(){
        public void run(){
            try {
                getZip();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            handler.sendMessage(handler.obtainMessage());
        }
    };

    @SuppressLint("SdCardPath")
    private void getZip() throws IOException{
        String strurl="http://172.16.2.10:16834/hqApplet/data/day/00TSLA.day.zip";
        URL url = null;
        int line=0;
        try {
            url=new URL(strurl);
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        HttpURLConnection httpurl=(HttpURLConnection) url.openConnection();
        httpurl.connect();
        String filename="/sdcard/abc.zip";
        
        BufferedInputStream bis=new BufferedInputStream(httpurl.getInputStream());
        FileOutputStream fos=new FileOutputStream(filename);
        byte[] buf=new byte[8096];
        while ((line = bis.read(buf)) != -1) {   
             fos.write(buf,0,line);
        }   
        fos.close();
        bis.close();
        httpurl.disconnect();
        
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_zip, menu);
        return true;
    }
   
        /*
         * 这个是解压ZIP格式文件的方法
         * 
         * @zipFileName：是传进来你要解压的文件路径，包括文件的名字；
         * 
         * @outputDirectory:选择你要保存的路劲；
         * 
         */
    private void unbyte(){
        try {
            DataInputStream dis=new DataInputStream(new FileInputStream(new File("/sdcard/abc")));
            int zip=dis.readInt();
            System.out.println("-------------"+zip);
            for(int i=0;i<zip;i++){
                int date=dis.readInt()+19970000;
                System.out.println("-------------"+date);
                float f1=dis.readFloat();
                float f2=dis.readFloat();
                float f3=dis.readFloat();
                float f4=dis.readFloat();
                float f5=dis.readFloat();
                long l=dis.readLong();
                float f6=dis.readFloat();
                int it=dis.readInt();
            }
            
            
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
    }
    private String TAG="zip----------------";
        private void unzip()
                throws Exception {
            ZipFile zf=new ZipFile("/sdcard/abc.zip");
            System.out.println("--------------"+zf.size());
            CheckedInputStream cis = new CheckedInputStream(new FileInputStream(new File("/sdcard/abc.zip")), new CRC32());   

            ZipInputStream in = new ZipInputStream(cis);
            ZipEntry z;
            String name = "";
            String extractedFile = "";
            int counter = 0;
            Log.d(TAG, "unzipping file: " + 111111);
            while ((z = in.getNextEntry()) != null) {
                name = z.getName();
                Log.d(TAG, "unzipping file: " + name);
                if (z.isDirectory()) {
                    Log.d(TAG, name + "is a folder");
                    // get the folder name of the widget
                    name = name.substring(0, name.length() - 1);
                    File folder = new File("/sdcard/" + File.separator + name);
                    folder.mkdirs();
                    if (counter == 0) {
                        extractedFile = folder.toString();
                    }
                    counter++;
                    Log.d(TAG, "mkdir " + "/sdcard/" + File.separator + name);
                } else {
                    Log.d(TAG, name + "is a normal file");
                    File file = new File("/sdcard/" + File.separator + name);
                    file.createNewFile();
                    // get the output stream of the file
                    FileOutputStream out = new FileOutputStream(file);
                    int ch;
                    byte[] buffer = new byte[1024];
                    // read (ch) bytes into buffer
                    while ((ch = in.read(buffer)) != -1) {
                        // write (ch) byte from buffer at the position 0
                        out.write(buffer, 0, ch);
                        out.flush();
                    }
                    out.close();
                }
            }

            in.close();

        }

        /**
         * 数据解压缩
         * 
         * @param is
         * @param os
         * @throws Exception
         */
        @SuppressLint({ "SdCardPath", "SdCardPath" })
        public static void zipdecompress()
                throws Exception {
            System.out.println("-------------zipdecompress");
            GZIPInputStream gis = new GZIPInputStream(new FileInputStream(new File("/sdcard/abc.zip")));
            File file=new File("/sdcard/zip");
            file.createNewFile();
            FileOutputStream fos=new FileOutputStream(file);
            int count;
            byte data[] = new byte[1024];
            while ((count = gis.read(data, 0, 1024)) != -1) {
                fos.write(data, 0, count);
            }
            System.out.println("-------------zipdecompress");
            gis.close();
        }    
   
}

java 压缩解压缩技术

http://snowolf.iteye.com/blog/642492