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服務(wù)器端代碼：

import java.net.*;import javax.net.ssl.*;import java.io.*;import java.security.*;public class SSLServer {private static int port = 50003;private static SSLServerSocket server;public static void initSSLServerSocket() {try {/** 要使用的證書(shū)名 **/String cert = "\\key.cert";/** 要使用的證書(shū)密碼 **/char certPass[] = "123456".toCharArray();/** 證書(shū)別稱(chēng)所使用的主要密碼 **/char certAliaMainPass[] = "123456".toCharArray();/** 創(chuàng  )建JKS密鑰庫 **/KeyStore keyStore = KeyStore.getInstance("JKS");keyStore.load(new FileInputStream(cert), certPass);/** 創(chuàng  )建管理JKS密鑰庫的X.509密鑰管理器 **/KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance("SunX509");keyManagerFactory.init(keyStore, certAliaMainPass);SSLContext sslContext = SSLContext.getInstance("TLSV1");/** 想使用SSL時(shí)，更改成如下,注釋部分 **///SSLContext sslContext = SSLContext.getInstance("SSLV3");sslContext.init(keyManagerFactory.getKeyManagers(), null, null);SSLServerSocketFactory sslServerSocketFactory = sslContext.getServerSocketFactory();server = (SSLServerSocket) sslServerSocketFactory.createServerSocket(port);} catch (Exception e) {e.printStackTrace();}}public static void main(String args[]) {try {initSSLServerSocket();System.out.println("服務(wù)器在端口 [" + port + "] 等待連接...");while (true) {SSLSocket socket = (SSLSocket) server.accept();new CreateThread(socket);}} catch (Exception e) {e.printStackTrace();}}}class CreateThread extends Thread {private static BufferedReader in;private static PrintWriter out;private static Socket s;public CreateThread(Socket socket) {try {s = socket;in = new BufferedReader(new InputStreamReader(s.getInputStream(), "GB2312"));out = new PrintWriter(s.getOutputStream(), true);start();} catch (Exception e) {e.printStackTrace();}}public void run() {try {String msg = in.readLine();System.out.println("接收到: " + msg);out.write("服務(wù)器接收到的信息是: " + msg);out.flush();s.close();} catch (Exception e) {e.printStackTrace();}}}

客戶(hù)端代碼：

import java.net.*;import javax.net.ssl.*;import java.io.*;public class SSLClient {static int port = 50003;public static void main(String args[]) {try {SSLSocketFactory factory = (SSLSocketFactory) SSLSocketFactory.getDefault();Socket s = factory.createSocket("192.168.12.41", port);BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream(), "GB2312"));PrintWriter out = new PrintWriter(s.getOutputStream(), true);out.println("證書(shū)啟用成功!");System.out.println(in.readLine());out.close();s.close();} catch (Exception e) {e.printStackTrace();}}}

服務(wù)器啟動(dòng)：java SSLServer
            key.cert 文件需要和 SSLServer.class 同一目錄下

客戶(hù)端運行：java -Djavax.net.ssl.trustStore=key.cert SSLClient

key文件生成：keytool -genkey -keystore Key.cert -keyalg rsa –alias tempkey
或者： keytool -genkey -alias tempkey -keysize 512 -validity 3650 -keyalg RSA -dname "CN=sariel.javaeye.com, OU=sariel CA,  O=sariel Inc, L=Stockholm, S=Stockholm, C=SE" -keypass 123456 -storepass 123456 -keystore key.cert