我正在尝试从 Jetty 9.4 迁移到 Jetty 11（可能为时过早？）并且未能调整代码以设置 websocket。我在 9.4 中实现这一点的方式如下：
Server server = new Server();
HttpConfiguration httpConfig = new HttpConfiguration();
httpConfig.setSendServerVersion(false);
HttpConnectionFactory httpFactory = new HttpConnectionFactory(httpConfig);
ServerConnector httpConnector = new ServerConnector(server, httpFactory);
httpConnector.setPort(port);
server.setConnectors(new Connector[] { httpConnector });
// Setup the basic application "context" for this application at "/"
// This is also known as the handler tree (in jetty speak)
ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
context.setContextPath("/");
// Add a websocket to a specific path spec
ServletHolder holderEvents2 = new ServletHolder("websocket", EventsServlet.class);
context.addServlet(holderEvents2, "/events/*");
HandlerList handlers = new HandlerList();
handlers.setHandlers(new Handler[] { context, new DefaultHandler() });
server.setHandler(handlers);
public class EventsServlet extends WebSocketServlet {
@Override
public void configure(WebSocketServletFactory factory) {
// register a socket class as default
factory.register(EchoSocket.class);
}
}
public class EchoSocket implements WebSocketListener {
// ...
}
由于不再有 WebSocketServlet 类，我摆弄了一下，找到了 JettyWebSocketServlet 类。根据它的JavaDoc，我认为它应该如下所示：
public class EventsServlet extends JettyWebSocketServlet {
@Override
protected void configure(JettyWebSocketServletFactory factory) {
// register a socket class as default
// factory.register(EchoSocket.class);
factory.addMapping("/", (req,res)->new EchoSocket());
}
}
但是 addMapping 的行实际上从未执行过。JettyWebSocketServletFactory 也没有 JettyWebSocketServlet 的 JavaDoc 所建议的名为 setDefaultMaxFrameSize 的方法。
我似乎能在网上找到的只是 Jetty <= 9.4，甚至是https://github.com/jetty-project/embedded-jetty-websocket-examples。
任何帮助将不胜感激。