Add PreAuth Xml sample project

Closes gh-26

servlet/xml/java/preauth/src/main/webapp/WEB-INF/web.xml

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee https://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+
+	<display-name>Spring Security Preauthentication Demo Application</display-name>
+
+	<!--
+	  - Location of the XML file that defines the root application context
+	  - Applied by ContextLoaderListener.
+	  -->
+	<context-param>
+		<param-name>contextConfigLocation</param-name>
+		<param-value>
+			/WEB-INF/applicationContext-security.xml
+		</param-value>
+	</context-param>
+
+	<filter>
+		<filter-name>springSecurityFilterChain</filter-name>
+		<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
+	</filter>
+
+	<filter-mapping>
+	  <filter-name>springSecurityFilterChain</filter-name>
+	  <url-pattern>/*</url-pattern>
+	</filter-mapping>
+
+	<!--
+	  - Loads the root application context of this web app at startup.
+	  - The application context is then available via
+	  - WebApplicationContextUtils.getWebApplicationContext(servletContext).
+	-->
+	<listener>
+		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
+	</listener>
+
+	<login-config>
+		<auth-method>BASIC</auth-method>
+		<realm-name>Preauth Realm</realm-name>
+	</login-config>
+
+	<security-role>
+		<role-name>ROLE_USER</role-name>
+	</security-role>
+	<security-role>
+		<role-name>ROLE_SUPERVISOR</role-name>
+	</security-role>
+	<security-constraint>
+		<web-resource-collection>
+			<web-resource-name>All areas</web-resource-name>
+			<url-pattern>/*</url-pattern>
+		</web-resource-collection>
+		<auth-constraint>
+			<role-name>ROLE_USER</role-name>
+		</auth-constraint>
+	</security-constraint>
+
+</web-app>