使用Jetty阻止响应

import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.handler.AbstractHandler;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class BlockResponseHandler extends AbstractHandler {
    @Override
    public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
        // 判断请求条件，如果需要阻止响应，则设置响应状态码为403 Forbidden
        if (/* 判断条件 */) {
            response.setStatus(HttpServletResponse.SC_FORBIDDEN);
            baseRequest.setHandled(true);
        } else {
            // 继续处理请求
            // ...
        }
    }
}

import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.handler.HandlerList;

public class JettyServer {
    public static void main(String[] args) throws Exception {
        Server server = new Server(8080);

        // 创建自定义处理器
        BlockResponseHandler blockResponseHandler = new BlockResponseHandler();

        // 创建处理器链
        HandlerList handlerList = new HandlerList();
        handlerList.addHandler(blockResponseHandler);

        // 设置处理器链到服务器
        server.setHandler(handlerList);

        // 启动服务器
        server.start();
        server.join();
    }
}