The type javax.servlet.ServletContext and javax.servlet.ServletException cannot be resolved

Question

I\'m trying to include Spring Security to my web project, i\'m following this tutorial http://docs.spring.io/spring-security/site/docs/current/guides/html5//helloworld.html<

Answer 1

Just add the javax.servlet API to the compile time dependencies. You don't need to include it in the build, it's already provided by the target servlet container.

Your current pom suggests that you're deploying to a barebones servlet container (Tomcat, Jetty, etc) instead of a full fledged Java EE application server (WildFly, TomEE, GlassFish, Liberty, etc), otherwise you'd have run into classloading-related trouble by providing JSF along with the webapp instead of using the container-provided one.

In that case, adding the below dependency should do for a Servlet 3.1 container like Tomcat 8:

    javax.servlet
    javax.servlet-api
    3.1.0
    provided

Or if you're actually targeting an older Servlet 3.0 container like Tomcat 7, change the to 3.0.1 (note: there's no 3.0 due to a mistake on their side).

If you happen to actually deploy to a Java EE 7 application server like WildFly 8, use the below dependency instead. It covers the entire Java EE API, including javax.servlet (and javax.faces, so you'd then remove those individual JSF API/impl dependencies):

    javax
    javaee-api
    7.0
    provided

Also here, if you're targeting an older Java EE 6 application server like JBoss AS 7, change the to 6.0.