java - Servlet 3.0 without a WAR file? -

is possible launch webapp altogether with:

1) no war file:

http://stephenh.github.io/2009/01/10/war-less-dev-with-jetty.html http://www.jamesward.com/2011/08/23/war-less-java-web-apps

2) no web.xml (i.e., servlet-3.0)

3) embedded web container (e.g., tomcat or jetty...)

example project: https://github.com/jetty-project/embedded-servlet-3.0

you'll still need web-inf/web.xml, it can empty. servlet support level , metadata-complete flags can known.

example: empty servlet 3.0 web.xml

<?xml version="1.0" encoding="utf-8"?> <web-app      xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"     xmlns="http://java.sun.com/xml/ns/javaee"      xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"     metadata-complete="false"     version="3.0"> </web-app> 

then can follow embedme.java example on how set up.

public class embedme {     public static void main(string[] args) throws exception {         int port = 8080;         server server = new server(port);          string wardir = "target/sample-webapp-1-snapshot";          webappcontext context = new webappcontext();         context.setresourcebase(wardir);         context.setdescriptor(wardir + "web-inf/web.xml");         context.setconfigurations(new configuration[] {                 new annotationconfiguration(), new webxmlconfiguration(),                 new webinfconfiguration(), new taglibconfiguration(),                 new plusconfiguration(), new metainfconfiguration(),                 new fragmentconfiguration(), new envconfiguration() });          context.setcontextpath("/");         context.setparentloaderpriority(true);         server.sethandler(context);         server.start();         server.join();     } }