Android_文件上传与断点续传

安卓端

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

public class DBOpenHelper extends SQLiteOpenHelper {

    public DBOpenHelper(Context context) { 
        super(context, "upload.db", null, 1);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        
        db.execSQL("create table uploadlog (_id integer primary key autoincrement,uploadfilepath varchar(123),sourceid varchar(10))");

    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        db.execSQL("drop table if exists uploadlog");
        onCreate(db);
    }

}

import java.io.File;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;

public class UploadLogService {

    private DBOpenHelper dbOpenHelper;

    public UploadLogService(Context context) {
        this.dbOpenHelper = new DBOpenHelper(context);
    }

    public void save(String sourceid, File uploadFile) {

        SQLiteDatabase db = dbOpenHelper.getWritableDatabase();

        db.execSQL(
                "insert into uploadlog (uploadfilepath,sourceid) values (?,?)",
                new Object[] { uploadFile.getAbsolutePath(), sourceid });
    }

    public void delete(File uploadFile) {

        SQLiteDatabase db = dbOpenHelper.getWritableDatabase();

        db.execSQL("delete from uploadlog where uploadfilepath=?",
                new Object[] { uploadFile.getAbsolutePath() });
    }

    public String getBindId(File uploadFile) {

        SQLiteDatabase db = dbOpenHelper.getWritableDatabase();

        Cursor cursor = db.rawQuery(
                "select sourceid from uploadlog where uploadfilepath=?",
                new String[] { uploadFile.getAbsolutePath() });
        
        if(cursor.moveToFirst()) {
            return cursor.getString(0);
        }
        
        cursor.close();
        
        return null;
    }
}

import java.io.File;
import java.io.OutputStream;
import java.io.PushbackInputStream;
import java.io.RandomAccessFile;
import java.net.Socket;

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;

import com.alin.service.UploadLogService;
import com.alin.util.StreamTool;

public class UploadActivity extends Activity {

    private EditText filenameText;

    private ProgressBar progressBar;

    private TextView percentView;

    private UploadLogService logService;

    private Handler handler = new Handler() {

        public void handleMessage(Message msg) {

            int progress = msg.getData().getInt("size");

            progressBar.setProgress(progress);

            double temp = (double) progressBar.getProgress()
                    / (double) progressBar.getMax();

            int percent = (int) (temp * 100);

            Log.i("percent", percent + "");

            percentView.setText(percent + "%");

            if (progressBar.getProgress() == progressBar.getMax()) {
                Toast.makeText(UploadActivity.this, R.string.success,
                        Toast.LENGTH_LONG).show();
            }
        };
    };

    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        logService = new UploadLogService(this);

        filenameText = (EditText) this.findViewById(R.id.filename);
        progressBar = (ProgressBar) this.findViewById(R.id.uploadbar);
        percentView = (TextView) this.findViewById(R.id.percent);

        Button button = (Button) this.findViewById(R.id.button);

        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                String filename = filenameText.getText().toString();

                if (Environment.getExternalStorageState().equals(
                        Environment.MEDIA_MOUNTED)) {

                    File uploadfile = new File(Environment
                            .getExternalStorageDirectory(), filename);

                    if (uploadfile.exists()) {

                        uploadFile(uploadfile);

                    } else {
                        Toast.makeText(UploadActivity.this,
                                R.string.filenotexist, Toast.LENGTH_LONG)
                                .show();
                    }

                } else {

                    Toast.makeText(UploadActivity.this, R.string.sdcarderror,
                            Toast.LENGTH_LONG).show();
                }
            }

        });

    }

    /**
     * 上传文件
     * 
     * @param uploadfile
     */
    private void uploadFile(final File uploadfile) {

        new Thread(new Runnable() {

            @Override
            public void run() {

                try {

                    progressBar.setMax((int) uploadfile.length());

                    String sourceid = logService.getBindId(uploadfile);
                    String head = "Content-Length=" + uploadfile.length()
                            + ";filename=" + uploadfile.getName()
                            + ";sourceid=" + (sourceid == null ? "" : sourceid)
                            + "\r\n";

                    Socket socket = new Socket("10.0.2.2", 7878);
                    OutputStream outStream = socket.getOutputStream();
                    outStream.write(head.getBytes());

                    // 服务端返回sourceid=xxx;position=xxx
                    PushbackInputStream inStream = new PushbackInputStream(
                            socket.getInputStream());
                    String response = StreamTool.readLine(inStream);
                    String[] items = response.split(";");
                    String responseid = items[0].substring(items[0]
                            .indexOf("=") + 1);
                    String position = items[1]
                            .substring(items[1].indexOf("=") + 1);

                    if (sourceid == null) {

                        // 代表原来没有上传过此文件,往数据库添加一条绑定记录
                        logService.save(responseid, uploadfile);
                    }

                    RandomAccessFile fileOutStream = new RandomAccessFile(
                            uploadfile, "r");
                    fileOutStream.seek(Integer.valueOf(position));
                    byte[] buffer = new byte[1024];
                    int len = -1;

                    // 获得进度条的进度值
                    int length = Integer.valueOf(position);

                    while ((len = fileOutStream.read(buffer)) != -1) {

                        outStream.write(buffer, 0, len);

                        length += len;

                        Message message = new Message();

                        message.getData().putInt("size", length);

                        handler.sendMessage(message);
                    }

                    fileOutStream.close();
                    outStream.close();
                    inStream.close();
                    socket.close();

                    if (length == uploadfile.length()) {
                        logService.delete(uploadfile);
                    }

                } catch (Exception e) {

                    Log.e("error", e.toString());

                    // e.printStackTrace();
                }
            }
        }).start();
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout   xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView  
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:text="@string/filename"
        />
    
    <EditText  
        android:id="@+id/filename"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:text="YoudaoDict.exe"
        />
        
    <Button  
        android:id="@+id/button"
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="@string/button"
        />
        
    <ProgressBar  
        android:id="@+id/uploadbar"
        android:layout_width="fill_parent" 
        android:layout_height="20px" 
        style="?android:attr/progressBarStyleHorizontal"
        />
        
    <TextView  
        android:id="@+id/percent"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:gravity="center"
        />
        
</LinearLayout>

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PushbackInputStream;

public class StreamTool {

    public static void save(File file, byte[] data) throws Exception {
        FileOutputStream outStream = new FileOutputStream(file);
        outStream.write(data);
        outStream.close();
    }

    public static String readLine(PushbackInputStream in) throws IOException {
        char buf[] = new char[128];
        int room = buf.length;
        int offset = 0;
        int c;
        loop: while (true) {
            switch (c = in.read()) {
            case -1:
            case '\n':
                break loop;
            case '\r':
                int c2 = in.read();
                if ((c2 != '\n') && (c2 != -1))
                    in.unread(c2);
                break loop;
            default:
                if (--room < 0) {
                    char[] lineBuffer = buf;
                    buf = new char[offset + 128];
                    room = buf.length - offset - 1;
                    System.arraycopy(lineBuffer, 0, buf, 0, offset);

                }
                buf[offset++] = (char) c;
                break;
            }
        }
        if ((c == -1) && (offset == 0))
            return null;
        return String.copyValueOf(buf, 0, offset);
    }

    /**
     * 读取流
     * 
     * @param inStream
     * @return 字节数组
     * @throws Exception
     */
    public static byte[] readStream(InputStream inStream) throws Exception {
        ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len = -1;
        while ((len = inStream.read(buffer)) != -1) {
            outSteam.write(buffer, 0, len);
        }
        outSteam.close();
        inStream.close();
        return outSteam.toByteArray();
    }
}

服务端

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PushbackInputStream;
import java.io.RandomAccessFile;
import java.net.ServerSocket;
import java.net.Socket;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

import cn.alin.utils.StreamTool;

public class FileServer {
     private ExecutorService executorService;//线程池
     private int port;//监听端口
     private boolean quit = false;//退出
     private ServerSocket server;
     private Map<Long, FileLog> datas = new HashMap<Long, FileLog>();//存放断点数据
     
     public FileServer(int port){
         this.port = port;
         //创建线程池，池中具有(cpu个数*50)条线程
         executorService = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors() * 50);
     }
     /**
      * 退出
      */
     public void quit(){
        this.quit = true;
        try {
            server.close();
        } catch (IOException e) {
        }
     }
     /**
      * 启动服务
      * @throws Exception
      */
     public void start() throws Exception{
         server = new ServerSocket(port);
         while(!quit){
             try {
               Socket socket = server.accept();
               //为支持多用户并发访问，采用线程池管理每一个用户的连接请求
               executorService.execute(new SocketTask(socket));
             } catch (Exception e) {
                 e.printStackTrace();
             }
         }
     }
     
     private final class SocketTask implements Runnable{
        private Socket socket = null;
        public SocketTask(Socket socket) {
            this.socket = socket;
        }
        
        @Override
        public void run() {
            try {
                System.out.println("accepted connection "+ socket.getInetAddress()+ ":"+ socket.getPort());
                PushbackInputStream inStream = new PushbackInputStream(socket.getInputStream());
                //得到客户端发来的第一行协议数据：Content-Length=143253434;filename=xxx.3gp;sourceid=
                //如果用户初次上传文件，sourceid的值为空。
                String head = StreamTool.readLine(inStream);
                System.out.println(head);
                if(head!=null){
                    //下面从协议数据中提取各项参数值
                    String[] items = head.split(";");
                    String filelength = items[0].substring(items[0].indexOf("=")+1);
                    String filename = items[1].substring(items[1].indexOf("=")+1);
                    String sourceid = items[2].substring(items[2].indexOf("=")+1);        
                    long id = System.currentTimeMillis();//生产资源id，如果需要唯一性，可以采用UUID
                    FileLog log = null;
                    if(sourceid!=null && !"".equals(sourceid)){
                        id = Long.valueOf(sourceid);
                        log = find(id);//查找上传的文件是否存在上传记录
                    }
                    File file = null;
                    int position = 0;
                    if(log==null){//如果上传的文件不存在上传记录,为文件添加跟踪记录
                        String path = new SimpleDateFormat("yyyy/MM/dd/HH/mm").format(new Date());
                        File dir = new File("file/"+ path);
                        if(!dir.exists()) dir.mkdirs();
                        file = new File(dir, filename);
                        if(file.exists()){//如果上传的文件发生重名，然后进行改名
                            filename = filename.substring(0, filename.indexOf(".")-1)+ dir.listFiles().length+ filename.substring(filename.indexOf("."));
                            file = new File(dir, filename);
                        }
                        save(id, file);
                    }else{// 如果上传的文件存在上传记录,读取上次的断点位置
                        file = new File(log.getPath());//从上传记录中得到文件的路径
                        if(file.exists()){
                            File logFile = new File(file.getParentFile(), file.getName()+".log");
                            if(logFile.exists()){
                                Properties properties = new Properties();
                                properties.load(new FileInputStream(logFile));
                                position = Integer.valueOf(properties.getProperty("length"));//读取断点位置
                            }
                        }
                    }
                    
                    OutputStream outStream = socket.getOutputStream();
                    String response = "sourceid="+ id+ ";position="+ position+ "\r\n";
                    //服务器收到客户端的请求信息后，给客户端返回响应信息：sourceid=1274773833264;position=0
                    //sourceid由服务生成，唯一标识上传的文件，position指示客户端从文件的什么位置开始上传
                    outStream.write(response.getBytes());
                    
                    RandomAccessFile fileOutStream = new RandomAccessFile(file, "rwd");
                    if(position==0) fileOutStream.setLength(Integer.valueOf(filelength));//设置文件长度
                    fileOutStream.seek(position);//移动文件指定的位置开始写入数据
                    byte[] buffer = new byte[1024];
                    int len = -1;
                    int length = position;
                    while( (len=inStream.read(buffer)) != -1){//从输入流中读取数据写入到文件中
                        fileOutStream.write(buffer, 0, len);
                        length += len;
                        Properties properties = new Properties();
                        properties.put("length", String.valueOf(length));
                        FileOutputStream logFile = new FileOutputStream(new File(file.getParentFile(), file.getName()+".log"));
                        properties.store(logFile, null);//实时记录文件的最后保存位置
                        logFile.close();
                    }
                    if(length==fileOutStream.length()) delete(id);
                    fileOutStream.close();                    
                    inStream.close();
                    outStream.close();
                    file = null;
                    
                }
            } catch (Exception e) {
                e.printStackTrace();
            }finally{
                try {
                    if(socket!=null && !socket.isClosed()) socket.close();
                } catch (IOException e) {}
            }
        }
     }
     
     public FileLog find(Long sourceid){
         return datas.get(sourceid);
     }
     //保存上传记录
     public void save(Long id, File saveFile){
         //日后可以改成通过数据库存放
         datas.put(id, new FileLog(id, saveFile.getAbsolutePath()));
     }
     //当文件上传完毕，删除记录
     public void delete(long sourceid){
         if(datas.containsKey(sourceid)) datas.remove(sourceid);
     }
     
     private class FileLog{
        private Long id;
        private String path;
        public Long getId() {
            return id;
        }
        public void setId(Long id) {
            this.id = id;
        }
        public String getPath() {
            return path;
        }
        public void setPath(String path) {
            this.path = path;
        }
        public FileLog(Long id, String path) {
            this.id = id;
            this.path = path;
        }    
     }

}

import java.awt.BorderLayout;
import java.awt.Frame;
import java.awt.Label;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

public class ServerWindow extends Frame{
    private FileServer s = new FileServer(7878);
    private Label label;
    
    public ServerWindow(String title){
        super(title);
        label = new Label();
        add(label, BorderLayout.PAGE_START);
        label.setText("服务器已经启动");
        this.addWindowListener(new WindowListener() {
            @Override
            public void windowOpened(WindowEvent e) {
                new Thread(new Runnable() {            
                    @Override
                    public void run() {
                        try {
                            s.start();
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }
                }).start();
            }
            
            @Override
            public void windowIconified(WindowEvent e) {
            }
            
            @Override
            public void windowDeiconified(WindowEvent e) {
            }
            
            @Override
            public void windowDeactivated(WindowEvent e) {
            }
            
            @Override
            public void windowClosing(WindowEvent e) {
                 s.quit();
                 System.exit(0);
            }
            
            @Override
            public void windowClosed(WindowEvent e) {
            }
            
            @Override
            public void windowActivated(WindowEvent e) {
            }
        });
    }
    /**
     * @param args
     */
    public static void main(String[] args) {
        ServerWindow window = new ServerWindow("文件上传服务端"); 
        window.setSize(300, 300); 
        window.setVisible(true);
    }

}

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PushbackInputStream;
import java.io.RandomAccessFile;
import java.net.Socket;

import cn.itcast.alin.StreamTool;

public class SocketClient {

    /**
     * @param args
     */
    public static void main(String[] args) {
        try {                    
        //    Socket socket = new Socket("127.0.0.1", 7878);
            Socket socket = new Socket("127.0.0.1", 7878);
            OutputStream outStream = socket.getOutputStream();            
            String filename = "QQWubiSetup.exe";
            File file = new File(filename);
            String head = "Content-Length="+ file.length() + ";filename="+ filename + ";sourceid=1278916111468\r\n";
            outStream.write(head.getBytes());
            
            PushbackInputStream inStream = new PushbackInputStream(socket.getInputStream());    
            String response = StreamTool.readLine(inStream);
            System.out.println(response);
            String[] items = response.split(";");
            String position = items[1].substring(items[1].indexOf("=")+1);
            
            RandomAccessFile fileOutStream = new RandomAccessFile(file, "r");
            fileOutStream.seek(Integer.valueOf(position));
            byte[] buffer = new byte[1024];
            int len = -1;
            int i = 0;
            while( (len = fileOutStream.read(buffer)) != -1){
                outStream.write(buffer, 0, len);
                i++;
                //if(i==10) break;
            }
            fileOutStream.close();
            outStream.close();
            inStream.close();
            socket.close();
        } catch (Exception e) {                    
            e.printStackTrace();
        }

    }
    /**
    * 读取流
    * @param inStream
    * @return 字节数组
    * @throws Exception
    */
    public static byte[] readStream(InputStream inStream) throws Exception{
            ByteArrayOutputStream outSteam = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int len = -1;
            while( (len=inStream.read(buffer)) != -1){
                outSteam.write(buffer, 0, len);
            }
            outSteam.close();
            inStream.close();
            return outSteam.toByteArray();
    }
}