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Java Proxy代理可以通过多种方式提升网络安全性,以下是一些主要的方法:
以下是一个简单的Java代理服务器示例,使用java.net.Proxy
和java.net.Socket
类:
import java.io.*;
import java.net.*;
public class SimpleProxyServer {
public static void main(String[] args) throws IOException {
int port = 8080; // 代理服务器监听的端口
ServerSocket serverSocket = new ServerSocket(port);
System.out.println("Proxy server is running on port " + port);
while (true) {
Socket clientSocket = serverSocket.accept();
new Thread(new ProxyHandler(clientSocket)).start();
}
}
static class ProxyHandler implements Runnable {
private Socket clientSocket;
public ProxyHandler(Socket clientSocket) {
this.clientSocket = clientSocket;
}
@Override
public void run() {
try {
BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
String requestLine = in.readLine();
System.out.println("Received request: " + requestLine);
URL url = new URL(requestLine.split(" ")[1]);
String host = url.getHost();
int port = url.getPort() == -1 ? 80 : url.getPort();
Socket serverSocket = new Socket(host, port);
OutputStream out = serverSocket.getOutputStream();
InputStream inFromServer = serverSocket.getInputStream();
// 将客户端请求转发到目标服务器
out.write(requestLine.getBytes());
out.write("\r\n".getBytes());
out.flush();
// 将目标服务器的响应转发回客户端
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = inFromServer.read(buffer)) != -1) {
out.write(buffer, 0, bytesRead);
}
inFromServer.close();
out.close();
serverSocket.close();
clientSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
通过合理配置和使用Java Proxy代理,可以显著提升网络的安全性和可靠性。
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