请写一个简单的Proxy程序的Java代码
时间: 2023-09-30 19:12:19 浏览: 37
好的,以下是一个简单的Java代理程序的代码示例:
```java
import java.io.*;
import java.net.*;
public class ProxyServer {
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = new ServerSocket(8080);
while (true) {
Socket clientSocket = serverSocket.accept();
new Thread() {
public void run() {
try {
BufferedReader clientReader = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
String requestLine = clientReader.readLine();
String[] requestComponents = requestLine.split(" ");
String method = requestComponents[0];
String url = requestComponents[1];
String version = requestComponents[2];
URL serverUrl = new URL(url);
HttpURLConnection serverConnection = (HttpURLConnection) serverUrl.openConnection();
serverConnection.setRequestMethod(method);
BufferedReader serverReader = new BufferedReader(new InputStreamReader(serverConnection.getInputStream()));
OutputStream clientOut = clientSocket.getOutputStream();
String responseLine = serverConnection.getHeaderField(0);
clientOut.write(responseLine.getBytes());
clientOut.write("\r\n".getBytes());
String serverLine;
while ((serverLine = serverReader.readLine()) != null) {
clientOut.write(serverLine.getBytes());
clientOut.write("\r\n".getBytes());
}
clientOut.flush();
clientOut.close();
clientSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}.start();
}
}
}
```
这个程序是一个简单的代理服务器,它监听8080端口,并在收到客户端的连接请求时,将客户端请求转发到指定的URL,并将响应返回给客户端。这个程序使用Java的Socket和URL类来实现代理服务器的功能。