服務器端源代碼:
01.import java.net.*;
02.import java.io.*;
03.
04.public class FileServer {
05. public static void main (String [] args ) throws IOException {
06. // create socket
07. ServerSocket servsock = new ServerSocket(13267);
08. while (true) {
09. System.out.println("Waiting...");
10.
11. Socket sock = servsock.accept();
12. System.out.println("Accepted connection : " + sock);
13.
14. // sendfile
15. File myFile = new File ("source.pdf");
16. byte [] mybytearray = new byte [(int)myFile.length()];
17. FileInputStream fis = new FileInputStream(myFile);
18. BufferedInputStream bis = new BufferedInputStream(fis);
19. bis.read(mybytearray,0,mybytearray.length);
20. OutputStream os = sock.getOutputStream();
21. System.out.println("Sending...");
22. os.write(mybytearray,0,mybytearray.length);
23. os.flush();
24. sock.close();
25. }
26. }
27.}
客戶端源代碼:
01.import java.net.*;
02.import java.io.*;
03.
04.public class FileClient{
05. public static void main (String [] args ) throws IOException {
06. int filesize=6022386; // filesize temporary hardcoded
07.
08. long start = System.currentTimeMillis();
09. int bytesRead;
10. int current = 0;
11. // localhost for testing
12. Socket sock = new Socket("127.0.0.1",13267);
13. System.out.println("Connecting...");
14.
15. // receive file
16. byte [] mybytearray = new byte [filesize];
17. InputStream is = sock.getInputStream();
18. FileOutputStream fos = new FileOutputStream("source-copy.pdf");
19. BufferedOutputStream bos = new BufferedOutputStream(fos);
20. bytesRead = is.read(mybytearray,0,mybytearray.length);
21. current = bytesRead;
22.
23. // thanks to A. Cádiz for the bug fix
24. do {
25. bytesRead =
26. is.read(mybytearray, current, (mybytearray.length-current));
27. if(bytesRead >= 0) current += bytesRead;
28. } while(bytesRead > -1);
29.
30. bos.write(mybytearray, 0 , current);
31. bos.flush();
32. long end = System.currentTimeMillis();
33. System.out.println(end-start);
34. bos.close();
35. sock.close();
36. }
37.}
1. Android與PC通訊的第一個例子:
- PC: Java Server
- Android:Java Client
01.public class TCPDesktopServer implements Runnable{
02.
03. public static final String SERVERIP = "192.168.0.149";
04. public static final int SERVERPORT = 51706;
05.
06. public void run() {
07. try {
08. System.out.println("S: Connecting...");
09.
10. ServerSocket serverSocket = new ServerSocket(SERVERPORT);
11. while (true) {
12.
13. Socket client = serverSocket.accept();
14. System.out.println("S: Receiving...");
15.
16. try {
17. BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));
18. String str = in.readLine();
19. System.out.println("S: Received: '" + str + "'");
20. } catch(Exception e) {
21. System.out.println("S: Error");
22. e.printStackTrace();
23. } finally {
24. client.close();
25. System.out.println("S: Done.");
26. }
27.
28. }
29.
30. } catch (Exception e) {
31. System.out.println("S: Error");
32. e.printStackTrace();
33. }
34. }
35.
36. public static void main (String a[]) {
37. Thread desktopServerThread = new Thread(new TCPDesktopServer());
38. desktopServerThread.start();
39. }
40.}
對上邊的源代碼做一些介紹:
指定Server監聽的端口和服務器IP地址。
1.public static final String SERVERIP = "192.168.0.149";
2.public static final int SERVERPORT = 51706;
應用之前所指定的IP和Port創建一個ServerSocket對象。
1.ServerSocket serverSocket = new ServerSocket(SERVERPORT);
用於偵聽和捕捉通過Socket連接的客戶端。
1.Socket client = serverSocket.accept();
應用Socket創建BufferedReader對象,用於接收Socket Stream中的數據。
1.BufferedReader in = new BufferedReader(new InputStreamReader(client.getInputStream()));
Android Client 源代碼:
01.InetAddress serverAddr = InetAddress.getByName("192.168.0.149");//TCPServer.SERVERIP
02.Log.d("TCP", "C: Connecting...");
03.Socket socket = new Socket(serverAddr, 51706);
04.String message = "AndroidRes,Where is my Pig (Android)?";
05.try {
06. Log.d("TCP", "C: Sending: '" + message + "'");
07. PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);
08. out.println(message);
09.} catch(Exception e) {
10. Log.e("TCP", "S: Error", e);
11.} finally {
12. socket.close();
13.}
對上邊的源代碼做一些介紹:
指定Server的IP地址。
1.InetAddress serverAddr = InetAddress.getByName("192.168.0.149");
應用Server的IP和端口建立Socket對象。
1.Socket socket = new Socket(serverAddr, 51706);
根據已經建立的Socket來創建PrintWriter,將信息通過這個對象來發送給Server,其中包含了三個部分:
1.PrintWriter out = new PrintWriter( new BufferedWriter( new OutputStreamWriter(socket.getOutputStream())),true);
以上是Android與運行在PC上的Java Server通訊的例子。來源由Anddev.org提供
2. Android與PC通訊的第二個例子:
- PC: CSharp Server
- Android:Java Client
通過上邊的例子,本人通過一些轉換,實現了Android與CSharp Server的通訊方法。原理沒有太大差異,僅僅是應用的方法稍有不同。
CSharp Server 源代碼:
01.TcpClient ConnectedClient = ServerListener.AcceptTcpClient();
02.
03.NetworkStream netStream = ConnectedClient.GetStream();
04.
05.BinaryReader br = new BinaryReader(netStream);
06.
07.byte[] tempByte = new byte[8192];
08.
09.tempByte = br.ReadBytes(8192);
10.
11.string RecevieString = System.Text.Encoding.Default.GetString(tempByte);
對上邊的源代碼做一些介紹:
通過TcpListener獲得的Client信息創建一個TcpClient對象。
1.TcpClient ConnectedClient = ServerListener.AcceptTcpClient();
從TcpClient對象中提取NetworkStream對象,其目的是建立Socket數據流。
1.NetworkStream netStream = ConnectedClient.GetStream();
建立BinaryReader對象爲剛剛創建的NetworkStream提供一個接口,藉助於這個接口可以非常方便的讀取信息。
1.BinaryReader br = new BinaryReader(netStream);
讀取Stream中的byte array數據,轉化爲string字符串。
1.byte[] tempByte = new byte[8192];
2.
3.tempByte = br.ReadBytes(8192);
4.
5.string RecevieString = System.Text.Encoding.Default.GetString(tempByte);
Android Client 源代碼:
這個Android Client所應用的方法與第一個例子中有很大區別,請各位特別注意(通過本人的反覆驗證,這個算是Java 與CSharp間可行的通訊方法)。
1.String message = "AndroidRes,Where is my Pig (Android)?";
2.Socket socket = new Socket("192.168.0.149", 51706);
3.OutputStream ops=socket.getOutputStream();
4.DataOutputStream dos=new DataOutputStream(ops);
5.dos.write(message.getBytes());
6.dos.close();
對上邊的源代碼做一些介紹:
同樣是建立Socket對象。
1.Socket socket = new Socket("192.168.0.149", 51706);
根據Socket對象創建OutputStream對象,根據名稱可以很容易的理解這個對象的目的,它是建立一個輸出的NetworkStream。
1.OutputStream ops=socket.getOutputStream();
DataOutputStream類似於BinaryWriter,是爲OutputStream建立一個接口,可以通過這個接口向Socket另外一端寫數據。
1.DataOutputStream dos=new DataOutputStream(ops);
最後這兩行代碼是實施寫的過程。
1.dos.write(message.getBytes());
2.dos.close();
以上就是提供的兩種Android與PC間通訊的方式(其中第一個方法來自Anddev.org,這裏要特別指出)。如果你有更巧妙或者更方便的方法,希望能與大家共同分享!