java 代码传输 执行 java传输对象

Java的对象序列化是指将那些实现了Serializable接口的对象转换成一个字符序列，并能够在以后将这个字节序列完全恢复为原来的对象。这一过程甚至可通过网络进行，这意味着序列化机制能自动弥补不同操作系统之间的差异。 只要对象实现了Serializable接口（记住，这个接口只是一个标记接口，不包含任何的方法      如果我们想要序列化一个对象，首先要创建某些OutputStream(如FileOutputStream、ByteArrayOutputStream等)，然后将这些OutputStream封装在一个ObjectOutputStream中。这时候，只需要调用writeObject()方法就可以将对象序列化，并将其发送给OutputStream（记住：对象的序列化是基于字节的，不能使用Reader和Writer等基于字符的层次结构）。而反序列的过程（即将一个序列还原成为一个对象），需要将一个InputStream(如FileInputstream、ByteArrayInputStream等)封装在ObjectInputStream内，然后调用readObject()即可。      对象序列化过程不仅仅保存单个对象，还能追踪对象内所包含的所有引用，并保存那些对象（这些对象也需实现了Serializable接口）。

要传递对象的引用属性类：

package yh.tcp.server;
import java.io.Serializable;
public class CoordObject implements Serializable{
 private static final long serialVersionUID = 1L;
 private double x;
 private double y;
 public double getX() {
  return x;
 }
 public void setX(double x) {
  this.x = x;
 }
 public double getY() {
  return y;
 }
 public void setY(double y) {
  this.y = y;
 }
 public CoordObject(double x, double y) {
  super();
  this.x = x;
  this.y = y;
 }
 @Override
 public String toString() {
  return "CoordObject [x=" + x + ", y=" + y + "]";
 }
}
package yh.tcp.server;
import java.io.Serializable;
public class CoordObject implements Serializable{
 private static final long serialVersionUID = 1L;
 private double x;
 private double y;
 public double getX() {
  return x;
 }
 public void setX(double x) {
  this.x = x;
 }
 public double getY() {
  return y;
 }
 public void setY(double y) {
  this.y = y;
 }
 public CoordObject(double x, double y) {
  super();
  this.x = x;
  this.y = y;
 }
 @Override
 public String toString() {
  return "CoordObject [x=" + x + ", y=" + y + "]";
 }
}

 要传递的对象类型：

package yh.tcp.server;
import java.io.Serializable;
public class PersonObject implements Serializable{
 private static final long serialVersionUID = 1L;
 private String name;
 private int age;
 private CoordObject coord;
 public PersonObject(String name, int age, CoordObject coord) {
  super();
  this.name = name;
  this.age = age;
  this.coord = coord;
 }
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 public int getAge() {
  return age;
 }
 public void setAge(int age) {
  this.age = age;
 }
 public CoordObject getCoord() {
  return coord;
 }
 public void setCoord(CoordObject coord) {
  this.coord = coord;
 }
 @Override
 public String toString() {
  return "PersonObject [name=" + name + ", age=" + age + ", coord="
    + coord + "]";
 }
}
 package yh.tcp.server;
import java.io.Serializable;
public class PersonObject implements Serializable{
 private static final long serialVersionUID = 1L;
 private String name;
 private int age;
 private CoordObject coord;
 public PersonObject(String name, int age, CoordObject coord) {
  super();
  this.name = name;
  this.age = age;
  this.coord = coord;
 }
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 public int getAge() {
  return age;
 }
 public void setAge(int age) {
  this.age = age;
 }
 public CoordObject getCoord() {
  return coord;
 }
 public void setCoord(CoordObject coord) {
  this.coord = coord;
 }
 @Override
 public String toString() {
  return "PersonObject [name=" + name + ", age=" + age + ", coord="
    + coord + "]";
 }
}

服务端：

package yh.tcp.server;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class TCPServer {
 public static void main(String[] args) throws IOException {
  ServerSocket server = null;
  Socket client = null;
  ObjectOutputStream oos = null;
  ObjectInputStream ois = null;
  server = new ServerSocket(8888);
  System.out.println("服务器开启,等待客户端访问……");
  client = server.accept();
 
  
  CoordObject coord=new CoordObject(1.1, 2.2);
  PersonObject person=new PersonObject("name", 123, coord);
  oos=new ObjectOutputStream(client.getOutputStream());
  oos.writeObject(person);
  oos.close();
  client.close();
 }
}
package yh.tcp.server;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class TCPServer {
 public static void main(String[] args) throws IOException {
  ServerSocket server = null;
  Socket client = null;
  ObjectOutputStream oos = null;
  ObjectInputStream ois = null;
  server = new ServerSocket(8888);
  System.out.println("服务器开启,等待客户端访问……");
  client = server.accept();
 
  
  CoordObject coord=new CoordObject(1.1, 2.2);
  PersonObject person=new PersonObject("name", 123, coord);
  oos=new ObjectOutputStream(client.getOutputStream());
  oos.writeObject(person);
  oos.close();
  client.close();
 }
}

客户端：

package yh.tcp.client;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.net.Socket;
import java.net.UnknownHostException;
public class TCPClient {
 public static void main(String[] args) throws UnknownHostException, IOException, ClassNotFoundException {
  Socket client = null;
  ObjectInputStream ois=null; 
  client =new Socket("localhost",8888);
  ois=new ObjectInputStream(client.getInputStream());
  Object object=ois.readObject(); 
  System.out.println(object);  
  ois.close();
  client.close();
 }
}
package yh.tcp.client;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.net.Socket;
import java.net.UnknownHostException;
public class TCPClient {
 public static void main(String[] args) throws UnknownHostException, IOException, ClassNotFoundException {
  Socket client = null;
  ObjectInputStream ois=null; 
  client =new Socket("localhost",8888);
  ois=new ObjectInputStream(client.getInputStream());
  Object object=ois.readObject(); 
  System.out.println(object);  
  ois.close();
  client.close();
 }
}

 打印结果：

PersonObject [name=name, age=age, coord=CoordObject [x=1.1, y=2.2]]

以上不具备多次交互，且不支持多线程为多个客户端提供链接的机制。

下面的实例，可以让客户端对服务端序列化的对象进行操作，并且支持多个客户端同时访问。

增加线程类：

package yh.tcp.server;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectOutputStream;
import java.net.Socket;
public class TcpThread implements Runnable {
 private Socket client;
 public Socket getClient() {
  return client;
 }
 public void setClient(Socket client) {
  this.client = client;
 }
 public TcpThread(Socket client) {
  super();
  this.client = client;
 }
 @Override
 public void run() {
  BufferedReader buf = null;
  ObjectOutputStream oos = null;
  try {
   oos = new ObjectOutputStream(client.getOutputStream());
   buf=new BufferedReader(new InputStreamReader(client.getInputStream()));
   boolean flag=true;
   while (flag) {
    String str=buf.readLine();
    if(str==null||"".equals(str)||"bye".equals(str)){
     flag=false;
    }else {
     CoordObject coord=new CoordObject(121.1, 43.1);
     PersonObject person=new PersonObject(str, 100, coord);
     oos.writeObject(person);
    }
   }
   System.out.println("当前断开一位~");
   oos.close();
   client.close();  
  } catch (IOException e) {
   e.printStackTrace();
  }
 }
}
 package yh.tcp.server;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectOutputStream;
import java.net.Socket;
public class TcpThread implements Runnable {
 private Socket client;
 public Socket getClient() {
  return client;
 }
 public void setClient(Socket client) {
  this.client = client;
 }
 public TcpThread(Socket client) {
  super();
  this.client = client;
 }
 @Override
 public void run() {
  BufferedReader buf = null;
  ObjectOutputStream oos = null;
  try {
   oos = new ObjectOutputStream(client.getOutputStream());
   buf=new BufferedReader(new InputStreamReader(client.getInputStream()));
   boolean flag=true;
   while (flag) {
    String str=buf.readLine();
    if(str==null||"".equals(str)||"bye".equals(str)){
     flag=false;
    }else {
     CoordObject coord=new CoordObject(121.1, 43.1);
     PersonObject person=new PersonObject(str, 100, coord);
     oos.writeObject(person);
    }
   }
   System.out.println("当前断开一位~");
   oos.close();
   client.close();  
  } catch (IOException e) {
   e.printStackTrace();
  }
 }
}

 

修改服务端：

package yh.tcp.server;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class TCPServer {
 public static void main(String[] args) throws IOException {
  ServerSocket server = null;
  Socket client = null;
  server = new ServerSocket(8888);
  boolean flag = true;
  while (flag) {
   System.out.println("服务器开启,等待客户端访问……");
   client = server.accept();
   new Thread(new TcpThread(client)).start();
  }
  server.close();
 }
}
 package yh.tcp.server;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class TCPServer {
 public static void main(String[] args) throws IOException {
  ServerSocket server = null;
  Socket client = null;
  server = new ServerSocket(8888);
  boolean flag = true;
  while (flag) {
   System.out.println("服务器开启,等待客户端访问……");
   client = server.accept();
   new Thread(new TcpThread(client)).start();
  }
  server.close();
 }
}

修改客户端：

package yh.tcp.client;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.PrintStream;
import java.net.Socket;
import java.net.UnknownHostException;
public class TCPClient {
 public static void main(String[] args) throws UnknownHostException, IOException, ClassNotFoundException {
  Socket client = null;
  ObjectInputStream ois=null; 
  PrintStream out=null;
  BufferedReader writeInput=null;
  client =new Socket("localhost",8888);
  
  writeInput=new BufferedReader(new InputStreamReader(System.in));//键盘打印流
  out=new PrintStream(client.getOutputStream());//向服务端输出流
  ois=new ObjectInputStream(client.getInputStream());//从服务端接受的输入流
 
  boolean flag=true;
  while (flag) {
   System.out.println("请输入信息~");
   String str=writeInput.readLine();
   out.println(str);
   if ("".equals(str)||null==str||"bye".equals(str)) {
    flag=false;
   }else {
    Object object=ois.readObject(); 
    System.out.println(object);  
   }
  }
  
  ois.close();
  client.close();
  out.close();
 }
}
package yh.tcp.client;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.PrintStream;
import java.net.Socket;
import java.net.UnknownHostException;
public class TCPClient {
 public static void main(String[] args) throws UnknownHostException, IOException, ClassNotFoundException {
  Socket client = null;
  ObjectInputStream ois=null; 
  PrintStream out=null;
  BufferedReader writeInput=null;
  client =new Socket("localhost",8888);
  
  writeInput=new BufferedReader(new InputStreamReader(System.in));//键盘打印流
  out=new PrintStream(client.getOutputStream());//向服务端输出流
  ois=new ObjectInputStream(client.getInputStream());//从服务端接受的输入流
 
  boolean flag=true;
  while (flag) {
   System.out.println("请输入信息~");
   String str=writeInput.readLine();
   out.println(str);
   if ("".equals(str)||null==str||"bye".equals(str)) {
    flag=false;
   }else {
    Object object=ois.readObject(); 
    System.out.println(object);  
   }
  }
  
  ois.close();
  client.close();
  out.close();
 }
}

 打印结果：对于汉字的序列化反序列化也没出现乱码