Java lang nullpointerexception at javax faces webapp facesservlet init



Keywords: java lang nullpointerexception at javax faces webapp facesservlet init
Description: The FacesContext is null at that point. This means that the FacesServlet didn't do its job. The stacktrace is also evidence of this; the line at javax.faces.webapp.FacesServlet.service() is missing.

The FacesContext is null at that point. This means that the FacesServlet didn't do its job. The stacktrace is also evidence of this; the line at javax.faces.webapp.FacesServlet.service() is missing.

The request URL needs to match the <url-pattern> of the FacesServlet as you've configured in /WEB-INF/web.xml in order to properly invoke it.

So, if it's for example <url-pattern>*.jsf</url-pattern>. then you should open the page by /hello.jsf instead of /hello.jsp in browser address bar.

Unrelated to the concrete problem, JSP is deprecated since JSF 2.0. You should be discarding this legacy view technology and be looking at its successor Facelets. You should make absolutely sure that you aren't reading books/tutorials/resources targeted on JSF 1.x instead of JSF 2.x. A lot of things are done differently in JSF 2.x as opposed to 1.x, which would in long term only lead to confusion among starters.






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