Java SSL/TLS 简介：揭秘安全网络通信的利器

import javax.net.ssl.*;
import java.io.*;
import java.net.Socket;

public class SSLClient {

public static void main(String[] args) throws IOException {
// 创建一个 SSLContext 对象
SSLContext sslContext = SSLContext.getInstance("TLS");

// 创建一个 KeyManagerFactory 对象
KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance("SunX509");

// 创建一个 TrustManagerFactory 对象
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance("SunX509");

// 初始化 SSLContext 对象
sslContext.init(keyManagerFactory.geTKEyManagers(), trustManagerFactory.getTrustManagers(), null);

// 创建一个 SSLSocketFactory 对象
SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();

// 创建一个 SSLSocket 对象
SSLSocket sslSocket = (SSLSocket) sslSocketFactory.createSocket("www.example.com", 443);

// 连接到服务器
sslSocket.connect();

// 使用 SSLSocket 与服务器通信
PrintWriter out = new PrintWriter(sslSocket.getOutputStream(), true);
BufferedReader in = new BufferedReader(new InputStreamReader(sslSocket.getInputStream()));

// 发送请求
out.println("GET / Http/1.1");
out.println("Host: www.example.com");
out.println("Connection: close");
out.println();

// 接收响应
String line;
while ((line = in.readLine()) != null) {
System.out.println(line);
}

// 关闭连接
sslSocket.close();
}
}