问使用Websockets在两个JAVA web应用程序之间进行通信

EN

@ServerEndpoint(value = "/chat/{sessionId}",
    encoders = ChatMessageCodec.class,
    decoders = ChatMessageCodec.class,
    configurator = ChatEndpoint.EndpointConfigurator.class)

@WebListener
public class ChatEndpoint implements HttpSessionListener
{
 .....

var server;
try {
      server = new WebSocket('ws://' + window.location.host +'<c:url 
                              value="/chat/${chatSessionId}" />');
      server.binaryType = 'arraybuffer';

     } 
catch(error) {
               modalErrorBody.text(error);
               modalError.modal('show');
               return;
             }