Java Socket实战之四 传输压缩对象 – yuanyuan

仍然需要一个实现了java.io.Serializable接口的简单Java对象

[java] view plaincopyprint?

package com.googlecode.garbagecan.test.socket.sample4; 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.sample4;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;}}

在Server端使用，socket的InputStream首先被包装成GZIPInputStream，然后又被包装成ObjectInputStream，而socket的OutputStream首先被包装成GZIPOutputStream，然后又被包装成ObjectOutputStream，如下：[java] view plaincopyprint?

package com.googlecode.garbagecan.test.socket.sample4; import java.io.IOException;import java.io.ObjectInputStream; import java.io.ObjectOutputStream;import java.net.ServerSocket; import java.net.Socket;import java.util.logging.Level; import java.util.logging.Logger;import java.util.zip.GZIPInputStream;import java.util.zip.GZIPOutputStream; 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(); socket.setSoTimeout(10 * 1000); invoke(socket); } } privatestaticvoid invoke(final Socket socket)throws IOException { new Thread(new Runnable() { publicvoid run() { GZIPInputStream gzipis = null; ObjectInputStream ois = null; GZIPOutputStream gzipos = null; ObjectOutputStream oos = null; try { gzipis = new GZIPInputStream(socket.getInputStream()); ois = new ObjectInputStream(gzipis); gzipos = new GZIPOutputStream(socket.getOutputStream()); oos = new ObjectOutputStream(gzipos); Object obj = ois.readObject(); User user = (User)obj; System.out.println("user: " + user.getName() +"/" + user.getPassword()); user.setName(user.getName() + "_new"); user.setPassword(user.getPassword() + "_new"); oos.writeObject(user); oos.flush(); gzipos.finish(); } catch (IOException ex) { logger.log(Level.SEVERE, null, ex); } catch(ClassNotFoundException ex) { logger.log(Level.SEVERE, null, ex); } finally { try { ois.close(); } catch(Exception ex) {} try { oos.close(); } catch(Exception ex) {} try { socket.close(); } catch(Exception ex) {} } } }).start(); } }

package com.googlecode.garbagecan.test.socket.sample4;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.net.ServerSocket;import java.net.Socket;import java.util.logging.Level;import java.util.logging.Logger;import java.util.zip.GZIPInputStream;import java.util.zip.GZIPOutputStream;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();socket.setSoTimeout(10 * 1000);invoke(socket);}}private static void invoke(final Socket socket) throws IOException {new Thread(new Runnable() {public void run() {GZIPInputStream gzipis = null;ObjectInputStream ois = null;GZIPOutputStream gzipos = null;ObjectOutputStream oos = null;try {gzipis = new GZIPInputStream(socket.getInputStream());ois = new ObjectInputStream(gzipis);gzipos = new GZIPOutputStream(socket.getOutputStream());oos = new ObjectOutputStream(gzipos);Object obj = ois.readObject();User user = (User)obj;System.out.println("user: " + user.getName() + "/" + user.getPassword());user.setName(user.getName() + "_new");user.setPassword(user.getPassword() + "_new");oos.writeObject(user);oos.flush();gzipos.finish();} catch (IOException ex) {logger.log(Level.SEVERE, null, ex);} catch(ClassNotFoundException ex) {logger.log(Level.SEVERE, null, ex);} finally {try {ois.close();} catch(Exception ex) {}try {oos.close();} catch(Exception ex) {}try {socket.close();} catch(Exception ex) {}}}}).start();}}

Client也和Server端类似，同样要不socket的XXXStream包装成GZIPXXXStream，然后再包装成ObjectXXXStream，如下：[java] view plaincopyprint?

package com.googlecode.garbagecan.test.socket.sample4; import java.io.IOException;import java.io.ObjectInputStream; import java.io.ObjectOutputStream;import java.net.InetSocketAddress; import java.net.Socket;import java.net.SocketAddress; import java.util.logging.Level;import java.util.logging.Logger; import java.util.zip.GZIPInputStream;import java.util.zip.GZIPOutputStream; publicclass MyClient { privatefinalstatic Logger logger = Logger.getLogger(MyClient.class.getName()); publicstaticvoid main(String[] args) throws Exception { for (int i =0; i < 10; i++) { Socket socket = null; GZIPOutputStream gzipos = null; ObjectOutputStream oos = null; GZIPInputStream gzipis = null; ObjectInputStream ois = null; try { socket = new Socket(); SocketAddress socketAddress = new InetSocketAddress("localhost",10000); socket.connect(socketAddress, 10 * 1000); socket.setSoTimeout(10 *1000); gzipos = new GZIPOutputStream(socket.getOutputStream()); oos = new ObjectOutputStream(gzipos); User user = new User("user_" + i,"password_" + i); oos.writeObject(user); oos.flush(); gzipos.finish(); gzipis = new GZIPInputStream(socket.getInputStream()); ois = new ObjectInputStream(gzipis); Object obj = ois.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 { ois.close(); } catch(Exception ex) {} try { oos.close(); } catch(Exception ex) {} try { socket.close(); } catch(Exception ex) {} } } } }

package com.googlecode.garbagecan.test.socket.sample4;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.net.InetSocketAddress;import java.net.Socket;import java.net.SocketAddress;import java.util.logging.Level;import java.util.logging.Logger;import java.util.zip.GZIPInputStream;import java.util.zip.GZIPOutputStream;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 < 10; i++) {Socket socket = null;GZIPOutputStream gzipos = null;ObjectOutputStream oos = null;GZIPInputStream gzipis = null;ObjectInputStream ois = null;try {socket = new Socket();SocketAddress socketAddress = new InetSocketAddress("localhost", 10000); socket.connect(socketAddress, 10 * 1000);socket.setSoTimeout(10 * 1000);gzipos = new GZIPOutputStream(socket.getOutputStream());oos = new ObjectOutputStream(gzipos);User user = new User("user_" + i, "password_" + i);oos.writeObject(user);oos.flush();gzipos.finish();gzipis = new GZIPInputStream(socket.getInputStream());ois = new ObjectInputStream(gzipis);Object obj = ois.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 {ois.close();} catch(Exception ex) {}try {oos.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。坚韧是成功的一大要素，只要在门上敲得够久够大声，终会把人唤醒的。