Приложение Spring Boot для Azure - проблема с подключением Sock JS - PullRequest
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Приложение Spring Boot для Azure - проблема с подключением Sock JS

0 голосов
/ 17 января 2020

Я создал простое приложение Spring Boot и клиент javascript, где связь осуществляется через соединение через веб-сокет с использованием Stomp.

Все отлично работает на локальном хосте и на локальном удаленном сервере, но когда Я загружаю приложение в облаке Azure, получаю эту ошибку: 

ERROR 115 --- [p-nio-80-exec-6] o.s.b.w.servlet.support.ErrorPageFilter  : 
Forwarding to error page from request /gs-guide-websocket/123/...] due to exception [Uncaught failure in SockJS request, uri=..../azurewebsites.net/gs-guide-websocket/123/...; 
  nested exception is org.springframework.web.socket.sockjs.SockJsTransportFailureException: Failed to open session; 
  nested exception is java.lang.IllegalArgumentException: Async support must be enabled on a servlet and for all filters involved in async request processing. 
  This is done in Java code using the Servlet API or by adding "<async-supported>true</async-supported>" to servlet and filter declarations in web.xml. 
  Also you must use a Servlet 3.0+ container]

    at org.springframework.web.socket.sockjs.support.SockJsHttpRequestHandler.handleRequest(SockJsHttpRequestHandler.java:137) 
    at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:53)  
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)  
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) 
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)  
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)  
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)  
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)  
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)  
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)  
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)  
    at com.microsoft.azure.appservice.filters.AppServiceFilter.doFilter(AppServiceFilter.java:35)  
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)  
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 
    at com.microsoft.azure.appservice.EasyAuthFilter.doFilter(EasyAuthFilter.java:51)  
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)  
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)  
    at com.myapp.MyCustomFilter.doFilter(MyCustomFilter.java:27)      // -> my custom filter
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)  
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) 
    .....

Чтобы включить asyn c, я реализовал интерфейс WebApplicationInitializer: 

public class ApplicationInitializer implements WebApplicationInitializer 
{

    public void onStartup(ServletContext servletContext) throws ServletException {
        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();

        Dynamic servlet = servletContext.addServlet("springDispatcher", new DispatcherServlet(ctx));
        servlet.addMapping("/");
        servlet.setAsyncSupported(true);
        servlet.setLoadOnStartup(1);
    }
}

Я даже создал собственный фильтр и убедился, что он также поддерживает asyn c, и, похоже, он запускается нормально, это часть журнала при запуске приложения: 

[INFO]  init() method has been get invoked
[INFO]  Filter name is myCustomFilter
[INFO]  {"filterDef":{"filterClass":"com.myapp.MyCustomFilter","filterName":"myCustomFilter","parameters":{},"asyncSupported":"true"}}
[INFO]  ServletContext name isorg.apache.catalina.core.ApplicationContextFacade@80249b0
[INFO]  init() method is ended

[INFO]  2020-01-17 15:20:19.122  INFO 115 --- [MessageBroker-1] o.s.w.s.c.WebSocketMessageBrokerStats    : WebSocketSession[0 current WS(0)-HttpStream(0)-HttpPoll(0), 0 total, 0 closed abnormally (0 connect failure, 0 send limit, 0 transport error)], stompSubProtocol[processed CONNECT(0)-CONNECTED(0)-DISCONNECT(0)], stompBrokerRelay[null], inboundChannel[pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0], outboundChannel[pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0], sockJsScheduler[pool size = 1, active threads = 1, queued tasks = 0, completed tasks = 0]

Websockets включены с платформы Azure.

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