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本文實例講述了Java Socket實現傳輸壓縮對象的方法。分享給大家供大家參考，具體如下：
前面文章《Java Socket實現的傳輸對象功能示例》說到了用Java Socket來傳輸對象，但是在有些情況下比如網絡環境不好或者對象比較大的情況下需要把數據對象進行壓縮然后在傳輸，此時就需要壓縮這些對象流，此時就可以GZIPInputStream和GZIPOutputStream來處理一下socket的InputStream和OutputStream。
仍然需要一個實現了java.io.Serializable接口的簡單Java對象
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首先被包裝成GZIPInputStream，然后又被包裝成ObjectInputStream，而socket的OutputStream首先被包裝成GZIPOutputStream，然后又被包裝成ObjectOutputStream，如下：
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端類似，同樣要不socket的XXXStream包裝成GZIPXXXStream，然后再包裝成ObjectXXXStream，如下：
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) {}
}
}
}
}
最后測試上面的代碼，首先運行Server類，然后運行Client類，就可以分別在Server端和Client端控制臺看到接收到的User對象實例了。
更多關于java相關內容感興趣的讀者可查看本站專題：《Java Socket編程技巧總結》、《Java文件與目錄操作技巧匯總》、《Java數據結構與算法教程》、《Java操作DOM節點技巧總結》和《Java緩存操作技巧匯總》
希望本文所述對大家java程序設計有所幫助。
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