Integrate Spring security java configuration with xml configuration-based project - spring

Question

I am new in spring framework and right now i am struggling to integrate an example of spring security java-based configuration with an existent xml-based project configuration.
I have included the following lines into the web.xml in order to link the security config to xml config:
<?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" id="WebApp_ID" version="3.0">
<display-name>MobileDrive_Maven</display-name>
<servlet>
<servlet-name>spring-dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>spring-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- Loads Spring Security config file -->
<context-param>
<param-name>contextClass</param-name>
<param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</context-param>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>com.websystique.springmvc.security</param-value>
<!-- <param-value>/WEB-INF/spring-security.xml</param-value> -->
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>
What am I missing because I am getting an error that it could not autowire stuff inside(Injection of autowired dependencies failed)?