AppEngine ChannelAPI警告：找不到以下文件：/ _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");
    }

}

我总是收到这个错误：

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

我的请求处理程序出了什么问题？

Answer 1

在网址模式中添加反斜杠可以使其正常工作。

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