本文实例讲述了Java Socket使用加密协议进行传输对象的方法。分享给大家供大家参考，具体如下：
前面的几篇文章介绍了Socket中一些常见的用法，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
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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;
}
}
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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。
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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();
}
}
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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。
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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) {}
}
}
}
}
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代码写完了，下面就需要产生keystore文件了，运行下面的命令
复制代码 代码如下:
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
复制代码 代码如下:
java -Djavax.net.ssl.keyStore=mysocket.jks -Djavax.net.ssl.keyStorePassword=mysocket com.googlecode.garbagecan.test.socket.ssl.MyServer
运行Client
复制代码 代码如下:
java -Djavax.net.ssl.trustStore=mysocket.jks -Djavax.net.ssl.trustStorePassword=mysocket com.googlecode.garbagecan.test.socket.ssl.MyClient
希望本文所述对大家java程序设计有所帮助。