本文實例講述了Java Socket使用加密協議進行傳輸對象的方法。分享給大家供大家參考，具體如下：
前面的幾篇文章介紹了Socket中一些常見的用法，但是對于一些有安全要求的應用就需要加密傳輸的數據，此時就需要用到SSLSocket了。
還是一樣需要一個實現了Java.io.Serializable接口的簡單Java對象
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package com.googlecode.garbagecan.test.socket.ssl;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; }} |
SSL Server類，這里需要用到ServerSocketFactory類來創建SSLServerSocket類實例，然后在通過SSLServerSocket來獲取SSLSocket實例，這里考慮到面向對象中的面向接口編程的理念，所以代碼中并沒有出現SSLServerSocket和SSLSocket，而是用了他們的父類ServerSocket和Socket。在獲取到ServerSocket和Socket實例以后，剩下的代碼就和不使用加密方式一樣了。
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package com.googlecode.garbagecan.test.socket.ssl;import java.io.BufferedInputStream;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 javax.net.ServerSocketFactory;import javax.net.ssl.SSLServerSocketFactory;public class MyServer { private final static Logger logger = Logger.getLogger(MyServer.class.getName()); public static void main(String[] args) { try { ServerSocketFactory factory = SSLServerSocketFactory.getDefault(); ServerSocket server = factory.createServerSocket(10000); while (true) { Socket socket = server.accept(); invoke(socket); } } catch (Exception ex) { ex.printStackTrace(); } } 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(); }} |
SSL Client類和SSL Server類類似，只是將其中獲取Socket的方式有所變化，其余的代碼也和不使用加密方式一樣。
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package com.googlecode.garbagecan.test.socket.ssl;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;import javax.net.SocketFactory;import javax.net.ssl.SSLSocketFactory;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 { SocketFactory factory = SSLSocketFactory.getDefault(); socket = factory.createSocket("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) {} } } }} |
代碼寫完了，下面就需要產生keystore文件了，運行下面的命令
復制代碼 代碼如下:
keytool -genkey -alias mysocket -keyalg RSA -keystore mysocket.jks
在提示輸入項中，密碼項自己給定，其它都不改直接回車，這里我使用的密碼是“mysocket”。
運行Server
復制代碼 代碼如下:
java -Djavax.net.ssl.keyStore=mysocket.jks -Djavax.net.ssl.keyStorePassword=mysocket com.googlecode.garbagecan.test.socket.ssl.MyServer
運行Client
復制代碼 代碼如下:
java -Djavax.net.ssl.trustStore=mysocket.jks -Djavax.net.ssl.trustStorePassword=mysocket com.googlecode.garbagecan.test.socket.ssl.MyClient
希望本文所述對大家java程序設計有所幫助。
