java - AppEngine ChannelAPI 警告 : No file found for:/_ah/channel/connected/

Question

在我的 web.xml 中

<servlet>
    <servlet-name>channelConnected</servlet-name>
    <servlet-class>ChannelConnected</servlet-class>
</servlet>

<servlet-mapping>
    <servlet-name>channelConnected</servlet-name>
    <url-pattern>/_ah/channel/connected</url-pattern>
</servlet-mapping>

我的servlet

public class ChannelConnected extends HttpServlet{

    private static final long serialVersionUID = 1L;

    protected void doPost(HttpServletRequest req, HttpServletResponse resp) 
            throws ServletException, IOException{
          System.out.println("hello world");
    }

}

我总是收到此错误:

WARNING: No file found for: /_ah/channel/connected/

我的请求处理程序出了什么问题？

Answer 1

在 url 模式中添加反斜杠即可使其正常工作。

<url-pattern>/_ah/channel/connected/</url-pattern>