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Java Socket怎么传输对象

发布时间:2021-11-07 02:12:55⊙投诉举报

这篇文章给大家介绍Java Socket怎么传输对象,内容非常详细,感兴趣的小伙伴们可以参考借鉴,希望对大家能有所帮助。

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,如下:

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:

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:

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) {}              }          }      }  }

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。

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