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Java Socket實(shí)現(xiàn)傳輸壓縮對(duì)象的方法示例

發(fā)布時(shí)間：2020-10-13 09:43:08 來源：腳本之家 閱讀：141 作者：kongxx 欄目：編程語(yǔ)言

本文實(shí)例講述了Java Socket實(shí)現(xiàn)傳輸壓縮對(duì)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(shí)現(xiàn)的傳輸對(duì)象功能示例》說到了用Java Socket來傳輸對(duì)象，但是在有些情況下比如網(wǎng)絡(luò)環(huán)境不好或者對(duì)象比較大的情況下需要把數(shù)據(jù)對(duì)象進(jìn)行壓縮然后在傳輸，此時(shí)就需要壓縮這些對(duì)象流，此時(shí)就可以GZIPInputStream和GZIPOutputStream來處理一下socket的InputStream和OutputStream。

仍然需要一個(gè)實(shí)現(xiàn)了java.io.Serializable接口的簡(jiǎn)單Java對(duì)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(cè)試上面的代碼，首先運(yùn)行Server類，然后運(yùn)行Client類，就可以分別在Server端和Client端控制臺(tái)看到接收到的User對(duì)象實(shí)例了。

更多關(guān)于java相關(guān)內(nèi)容感興趣的讀者可查看本站專題：《Java Socket編程技巧總結(jié)》、《Java文件與目錄操作技巧匯總》、《Java數(shù)據(jù)結(jié)構(gòu)與算法教程》、《Java操作DOM節(jié)點(diǎn)技巧總結(jié)》和《Java緩存操作技巧匯總》

希望本文所述對(duì)大家java程序設(shè)計(jì)有所幫助。

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