安卓 websocket server 代码

以下是一个简单的基于Java的Android WebSocket服务器代码：

import java.io.IOException;
import java.net.InetSocketAddress;

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

public class AndroidWebSocketServer {

    public static void main(String[] args) throws Exception {
        HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
        server.createContext("/", new MyHandler());
        server.setExecutor(null); // creates a default executor
        server.start();
    }

    static class MyHandler implements HttpHandler {
        public void handle(HttpExchange t) throws IOException {
            String response = "Hello World!";
            t.sendResponseHeaders(200, response.length());
            OutputStream os = t.getResponseBody();
            os.write(response.getBytes());
            os.close();
        }
    }

}

该代码创建了一个基本的HTTP服务器，并为其创建了一个处理程序。您需要添加WebSocket协议的支持，为此，您可以使用Java API for WebSocket（JSR 356）：

import java.io.IOException;
import java.net.InetSocketAddress;

import javax.websocket.DeploymentException;
import javax.websocket.server.ServerContainer;
import javax.websocket.server.ServerEndpointConfig;

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

public class AndroidWebSocketServer {

    public static void main(String[] args) throws Exception {
        HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
        server.createContext("/", new MyHandler());
        server.setExecutor(null); // creates a default executor

        // Add WebSocket support
        ServerContainer container = WebSocketServerContainerProvider.getWebSocketServerContainer();
        container.addEndpoint(ServerEndpointConfig.Builder.create(AndroidWebSocketEndpoint.class, "/").build());

        server.start();
    }

    static class MyHandler implements HttpHandler {
        public void handle(HttpExchange t) throws IOException {
            String response = "Hello World!";
            t.sendResponseHeaders(200, response.length());
            OutputStream os = t.getResponseBody();
            os.write(response.getBytes());
            os.close();
        }
    }

}

在上面的代码中，我们使用了Java API for WebSocket，它提供了一种简单的方式来添加WebSocket支持。我们创建了一个WebSocket容器并向其添加了一个WebSocket端点。该端点将使用AndroidWebSocketEndpoint类来处理WebSocket连接。您需要编写AndroidWebSocketEndpoint类的代码，以便在收到WebSocket消息时执行任何操作。