Android網路程式設計只區域網傳輸檔案

 package com.jiao.filesend;

 import java.io.BufferedReader;

 import java.io.BufferedWriter;

 import java.io.FileInputStream;

 import java.io.FileOutputStream;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import java.io.OutputStream;

 import java.io.OutputStreamWriter;

 import java.net.ServerSocket;

 import java.net.Socket;

 import android.os.Environment;

 /**

  * Socket管理類

  * 1、接收檔案

  * 2、傳送檔案

  * @author jiaocg

  *

  */

 public class SocketManager {

     private ServerSocket server;

     public SocketManager(ServerSocket server){

         this.server = server;

     }

     //接收檔案

     public String ReceiveFile(){

         try{

             //接收檔名

             Socket name = server.accept();

             //獲取資料的輸入流

             InputStream nameStream = name.getInputStream();

             //字元流轉換為位元組流

             InputStreamReader streamReader = new InputStreamReader(nameStream);

             BufferedReader br = new BufferedReader(streamReader);

             //接收到檔名

             String fileName = br.readLine();

             br.close();

             streamReader.close();

             nameStream.close();

             name.close();

             //接收檔案資料

             Socket data = server.accept();

             InputStream dataStream = data.getInputStream();

             String savePath = Environment.getExternalStorageDirectory().getPath() + "/" + fileName;

             FileOutputStream file = new FileOutputStream(savePath, false);

             byte[] buffer = new byte[1024];

             int size = -1;

             while ((size = dataStream.read(buffer)) != -1){

                 file.write(buffer, 0 ,size);

             }

             file.close();

             dataStream.close();

             data.close();

             return fileName + "---接收完成"+"---儲存至："+savePath;

         }catch(Exception e){

             System.out.println(e.toString());

             return "接收錯誤:\n" + e.getMessage();

         }

     }

     //傳送檔案

     public String SendFile(String fileName, String path, String ipAddress, int port){

         try {

             //傳送檔名

             //首先發送檔名

             Socket name = new Socket(ipAddress, port);

             //建立輸出流

             OutputStream outputName = name.getOutputStream();

             //字元流轉換為位元組流

             OutputStreamWriter outputWriter = new OutputStreamWriter(outputName);

             //緩衝區

             BufferedWriter bwName = new BufferedWriter(outputWriter);

             //寫到緩衝區

             bwName.write(fileName);

             bwName.close();

             outputWriter.close();

             outputName.close();

             name.close();

             //傳送檔案資料

             Socket data = new Socket(ipAddress, port);

             //建立輸出流

             OutputStream outputData = data.getOutputStream();

             //從檔案系統中的某個檔案中獲得輸入位元組

             FileInputStream fileInput = new FileInputStream(path);

             int size = -1;

             byte[] buffer = new byte[1024];

             while((size = fileInput.read(buffer, 0, 1024)) != -1){

                 outputData.write(buffer, 0, size);

             }

             outputData.close();

             fileInput.close();

             data.close();

             return fileName + " 傳送完成";

         } catch (Exception e) {

             return "傳送錯誤:\n" + e.getMessage();

         }

     }

 }

 // 1、檔名 2、檔案路徑 3、目標ip 4、目標埠

 String response = socketManager.SendFile(fileName, filePath,ip, POST);

 Message.obtain(handler, 0, response).sendToTarget();