如何创建嵌入式WebSocket服务器Jetty 9？ [英] How do I create an embedded WebSocket server Jetty 9?

问题描述

我讨厌问这么模糊的问题，但我很难找到一个简单的例子。以下是我到目前为止的内容：

I hate asking such a vague question, but I'm having a hard time finding a simple example. Here's what I have so far:

public class JettyWebSocketServlet extends WebSocketServlet{
    @Override
    public void configure(WebSocketServletFactory factory) {
        factory.register(MyEchoSocket.class);
    }
}

@WebSocket
public class MyEchoSocket {
    @OnWebSocketMessage
    public void onText(WebSocketConnection conn, String message) {
        System.out.println("text: " + message);
        try {
            conn.write(null, new FutureCallback(), "got: " + message);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

我可以使用嵌入式Jetty示例find总是显示如下所示的内容，以启动Server实例运行，但我不知道如何实例化我的WebSocketServlet。

The embedded Jetty examples I can find always show something like the following, to start a Server instance running, but I don't know how to instantiate my WebSocketServlet.

        Server server = new Server(8080);
        server.start();
        server.join();

如何创建可以处理WebSocket连接请求的嵌入式服务器？

How do I create an embedded server that can handle WebSocket connection requests?

推荐答案

更新日期：2013年12月2日

带有WebSocket的Embedded Jetty的日期示例，请参阅：

For an up to date example of the Embedded Jetty with WebSocket see:

https://github.com/jetty-project/embedded-jetty-websocket-examples

原始答案

测试用例中有一个例子。

There's an example found in the test cases.

http://git.eclipse.org/c/jetty/org.eclipse.jetty.project.git/tree/jetty-websocket/websocket-server/src/test/java /org/eclipse/jetty/websocket/server/examples/echo/ExampleEchoServer.j ava

简答：

Server server = new Server(8080);
WebSocketHandler wsHandler = new WebSocketHandler()
    {
        @Override
        public void configure(WebSocketServletFactory factory)
        {
            factory.register(MyEchoSocket.class);
        }
    };
server.addHandler(wsHandler);
server.start();
server.join();

这将创建一个处理1个上下文的简单服务器，即根上下文。

This will create a simple server that handles 1 context, the root context.

http://localhost:8080/

如果要将WebSocketHandler绑定到另一个上下文，请将其包装在ContextHandler中。

If you want to bind the WebSocketHandler to another context, wrap it in a ContextHandler.

Server server = new Server(8080);
WebSocketHandler wsHandler = new WebSocketHandler()
    {
        @Override
        public void configure(WebSocketServletFactory factory)
        {
            factory.register(MyEchoSocket.class);
        }
    };
ContextHandler context = new ContextHandler();
context.setContextPath("/echo");
context.setHandler(wsHandler);
server.addHandler(context);
server.start();
server.join();

这会将你的websocket绑定到

This will bind your websocket to

http://localhost:8080/echo/

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