[KARAF-7548] currentThread.contextClassLoader does not include the Servlet bundle using http whiteboard

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 4.4.1
• Component/s: karaf
• Labels: whiteboard
• Assignee: Unassigned
• Reporter: Weichun Qian
• Created: 14/Sep/22 03:45
• Updated: 14/Sep/22 03:45

Description

Registering the servlet to http whiteboard:

Dictionary<String, String> props = new Hashtable<>(); props.put(HTTP_WHITEBOARD_SERVLET_PATTERN, "/hello"); props.put(HTTP_WHITEBOARD_SERVLET_NAME, "helloservlet"); props.put(HTTP_WHITEBOARD_SERVLET_ASYNC_SUPPORTED, "true"); props.put(HTTP_WHITEBOARD_CONTEXT_SELECT, String.format("(osgi.http.whiteboard.context.name=%s)", "default")); context.registerService(Servlet.class, new MyServlet(), props);

The following code will get an exception.

 

public class MyServlet extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.getWriter().println("<h1>it worked</h1>");
		try {
			Thread.currentThread().getContextClassLoader().loadClass(MyServlet.class.getName());
		} catch (ClassNotFoundException e) {
			throw new RuntimeException(e);
		}
	}
} 

 

 
 
The demo project is here.demo.zip