Spring AI Is it supported to expose MCP tools by adding spring-ai-starter-mcp-server-webflux to a legacy WebMVC app? No endpoint GET /sse error

Bug description When adding the spring-ai-starter-mcp-server-webflux starter to an existing Spring WebMVC application to expose MCP tools, accessing the /see or /sse endpoints results in an error. The actual exception is:

org.springframework.web.servlet.NoHandlerFoundException: No endpoint GET /sse.
    at org.springframework.web.servlet.DispatcherServlet.noHandlerFound(DispatcherServlet.java:1305)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903)
    at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564)
    at org.springframework.web.servlet.FrameworkServlet.service(HttpServlet.java:885)
    at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:195)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140)

I am not sure if this is a bug or a misconfiguration on my side. Any help or guidance would be appreciated. Is this kind of integration supported? Or is there any official recommendation for integrating MCP into an existing WebMVC application?

Environment - spring-ai-starter-mcp-server-webflux version: 1.0.0 - Spring Boot version: 3.4.5 - Java version: 17

Steps to reproduce 1. Add the spring-ai-starter-mcp-server-webflux dependency to an existing Spring WebMVC application. 2. Start the project. 3. Visit /see or /sse in a browser. 4. The NoHandlerFoundException error above appears.