Java Socket使用加密协议进行传输对象的方法

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

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

ps：关于加密解密感兴趣的朋友还可以参考本站在线工具：

文字在线加密解密工具（包含aes、des、rc4等）：

md5在线加密工具:
http://tools.jb51.net/password/createmd5password

在线散列/哈希算法加密工具:

在线md5/hash/sha-1/sha-2/sha-256/sha-512/sha-3/ripemd-160加密工具：

在线sha1/sha224/sha256/sha384/sha512加密工具：

更多关于java相关内容感兴趣的读者可查看本站专题：《java socket编程技巧总结》、《java文件与目录操作技巧汇总》、《java数据结构与算法教程》、《java操作dom节点技巧总结》和《java缓存操作技巧汇总》

希望本文所述对大家java程序设计有所帮助。