前面几篇博文提到了Socket中一些常用的用法,但是对于一些有安全要求的应用就需要加密传输的数据,此时就需要用到SSLSocket了。
还是一样需要一个实现了java.io.Serializable接口的简单Java对象:
- 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类,这里需要用到ServerSocketFactory类来创建SSLServerSocket类实例,然后在通过SSLServerSocket来获取SSLSocket实例,这里考虑到面向对象中的面向接口编程的理念,所以代码中并没有出现SSLServerSocket和SSLSocket,而是用了他们的父类ServerSocket和Socket。在获取到ServerSocket和Socket实例以后,剩下的代码就和不使用加密方式一样了。
- 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类和SSL Server类类似,只是将其中获取Socket的方式有所变化,其余的代码也和不使用加密方式一样。
- 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) {}
- }
- }
- }
- }
代码写完了,下面就需要产生keystore文件了,运行下面的命令
- keytool -genkey -alias mysocket -keyalg RSA -keystore mysocket.jks
在提示输入项中,密码项自己给定,其它都不改直接回车,这里我使用的密码是“mysocket”。
运行Server
- java -Djavax.net.ssl.keyStore=mysocket.jks -Djavax.net.ssl.keyStorePassword=mysocket com.googlecode.garbagecan.test.socket.ssl.MyServer
运行Client
- java -Djavax.net.ssl.trustStore=mysocket.jks -Djavax.net.ssl.trustStorePassword=mysocket com.googlecode.garbagecan.test.socket.ssl.MyClient
原文链接:http://blog.csdn.net/kongxx/article/details/7259837
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