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| 基于SSL服务器套接字的安全登录 |
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import javax.net.ssl.SSLServerSocket;
import javax.net.ssl.SSLServerSocketFactory;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
class LoginClient {
public LoginClient() {
try {
SSLSocketFactory socketFactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
SSLSocket socket = (SSLSocket) socketFactory.createSocket("localhost", 7070);
PrintWriter output = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
String userName = "MyName";
output.println(userName);
String password = "MyPass";
output.println(password);
output.flush();
BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String response = input.readLine();
System.out.println(response);
output.close();
input.close();
socket.close();
} catch (IOException ioException) {
ioException.printStackTrace();
} finally {
System.exit(0);
}
}
public static void main(String args[]) {
new LoginClient();
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
class LoginServer {
private static final String CORRECT_USER_NAME = "Java";
private static final String CORRECT_PASSWORD = "HowToProgram";
private SSLServerSocket serverSocket;
public LoginServer() throws Exception {
SSLServerSocketFactory socketFactory = (SSLServerSocketFactory) SSLServerSocketFactory
.getDefault();
serverSocket = (SSLServerSocket) socketFactory.createServerSocket(7070);
}
private void runServer() {
while (true) {
try {
System.err.println("Waiting for connection...");
SSLSocket socket = (SSLSocket) serverSocket.accept();
BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter output = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));
String userName = input.readLine();
String password = input.readLine();
if (userName.equals(CORRECT_USER_NAME) && password.equals(CORRECT_PASSWORD)) {
output.println("Welcome, " + userName);
} else {
output.println("Login Failed.");
}
output.close();
input.close();
socket.close();
} catch (IOException ioException) {
ioException.printStackTrace();
}
}
}
public static void main(String args[]) throws Exception {
LoginServer server = new LoginServer();
server.runServer();
}
}
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