Java Socket实战之三 传输对象 – yuanyuan

前面两篇文章介绍了怎样建立Java Socket通信，这一篇说一下怎样使用Java Socket来传输对象。

首先需要一个普通的对象类，由于需要序列化这个对象以便在网络上传输，所以实现java.io.Serializable接口就是必不可少的了，入下：

[java] view plaincopyprint?

package com.googlecode.garbagecan.test.socket.sample3; publicclass Userimplements java.io.Serializable { privatestaticfinallong serialVersionUID = 1L; private String name; private String password; public User() { } public User(String name, String password) { this.name = name; this.password = password; } public String getName() { return name; } publicvoid setName(String name) { this.name = name; } public String getPassword() { return password; } publicvoid setPassword(String password) { this.password = password; } }

package com.googlecode.garbagecan.test.socket.sample3;public class User implements java.io.Serializable {private static final long serialVersionUID = 1L;private String name;private String password;public User() {}public User(String name, String password) {this.name = name;this.password = password;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}}

对于Server端的代码，代码中分别使用了ObjectInputStream和ObjectOutputStream来接收和发送socket中的InputStream和OutputStream，然后转换成Java对象，如下：[java] view plaincopyprint?

package com.googlecode.garbagecan.test.socket.sample3; import java.io.*; import java.net.ServerSocket; import java.net.Socket;import java.util.logging.Level; import java.util.logging.Logger; publicclass MyServer { privatefinalstatic Logger logger = Logger.getLogger(MyServer.class.getName()); publicstaticvoid main(String[] args) throws IOException { ServerSocket server = new ServerSocket(10000); while (true) { Socket socket = server.accept(); invoke(socket); } } privatestaticvoid invoke(final Socket socket)throws IOException { new Thread(new Runnable() { publicvoid run() { ObjectInputStream is = null; ObjectOutputStream os = null; try { is = new ObjectInputStream(new BufferedInputStream(socket.getInputStream())); os = new ObjectOutputStream(socket.getOutputStream()); Object obj = is.readObject(); User user = (User)obj; System.out.println("user: " + user.getName() +"/" + user.getPassword()); user.setName(user.getName() + "_new"); user.setPassword(user.getPassword() + "_new"); os.writeObject(user); os.flush(); } catch (IOException ex) { logger.log(Level.SEVERE, null, ex); } catch(ClassNotFoundException ex) { logger.log(Level.SEVERE, null, ex); } finally { try { is.close(); } catch(Exception ex) {} try { os.close(); } catch(Exception ex) {} try { socket.close(); } catch(Exception ex) {} } } }).start(); } }

package com.googlecode.garbagecan.test.socket.sample3;import java.io.*;import java.net.ServerSocket;import java.net.Socket;import java.util.logging.Level;import java.util.logging.Logger;public class MyServer {private final static Logger logger = Logger.getLogger(MyServer.class.getName());public static void main(String[] args) throws IOException {ServerSocket server = new ServerSocket(10000);while (true) {Socket socket = server.accept();invoke(socket);}}private static void invoke(final Socket socket) throws IOException {new Thread(new Runnable() {public void run() {ObjectInputStream is = null;ObjectOutputStream os = null;try {is = new ObjectInputStream(new BufferedInputStream(socket.getInputStream()));os = new ObjectOutputStream(socket.getOutputStream());Object obj = is.readObject();User user = (User)obj;System.out.println("user: " + user.getName() + "/" + user.getPassword());user.setName(user.getName() + "_new");user.setPassword(user.getPassword() + "_new");os.writeObject(user);os.flush();} catch (IOException ex) {logger.log(Level.SEVERE, null, ex);} catch(ClassNotFoundException ex) {logger.log(Level.SEVERE, null, ex);} finally {try {is.close();} catch(Exception ex) {}try {os.close();} catch(Exception ex) {}try {socket.close();} catch(Exception ex) {}}}}).start();}}

Client也和Server端类似，同样使用ObjectOutputStream和ObjectInputStream来处理，如下：[java] view plaincopyprint?

package com.googlecode.garbagecan.test.socket.sample3; import java.io.BufferedInputStream;import java.io.IOException; import java.io.ObjectInputStream;import java.io.ObjectOutputStream; import java.net.Socket;import java.util.logging.Level; import java.util.logging.Logger; publicclass MyClient { privatefinalstatic Logger logger = Logger.getLogger(MyClient.class.getName()); publicstaticvoid main(String[] args) throws Exception { for (int i =0; i < 100; i++) { Socket socket = null; ObjectOutputStream os = null; ObjectInputStream is = null; try { socket = new Socket("localhost",10000); os = new ObjectOutputStream(socket.getOutputStream()); User user = new User("user_" + i,"password_" + i); os.writeObject(user); os.flush(); is = new ObjectInputStream(new BufferedInputStream(socket.getInputStream())); Object obj = is.readObject(); if (obj !=null) { user = (User)obj; System.out.println("user: " + user.getName() +"/" + user.getPassword()); } } catch(IOException ex) { logger.log(Level.SEVERE, null, ex); } finally { try { is.close(); } catch(Exception ex) {} try { os.close(); } catch(Exception ex) {} try { socket.close(); } catch(Exception ex) {} } } } }

package com.googlecode.garbagecan.test.socket.sample3;import java.io.BufferedInputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.net.Socket;import java.util.logging.Level;import java.util.logging.Logger;public class MyClient {private final static Logger logger = Logger.getLogger(MyClient.class.getName());public static void main(String[] args) throws Exception {for (int i = 0; i < 100; i++) {Socket socket = null;ObjectOutputStream os = null;ObjectInputStream is = null;try {socket = new Socket("localhost", 10000);os = new ObjectOutputStream(socket.getOutputStream());User user = new User("user_" + i, "password_" + i);os.writeObject(user);os.flush();is = new ObjectInputStream(new BufferedInputStream(socket.getInputStream()));Object obj = is.readObject();if (obj != null) {user = (User)obj;System.out.println("user: " + user.getName() + "/" + user.getPassword());}} catch(IOException ex) {logger.log(Level.SEVERE, null, ex);} finally {try {is.close();} catch(Exception ex) {}try {os.close();} catch(Exception ex) {}try {socket.close();} catch(Exception ex) {}}}}}

最后测试上面的代码，首先运行Server类，然后运行Client类，就可以分别在Server端和Client端控制台看到接收到的User对象实例了。继续期待我的下一个旅行，拿起背包，