Spring Web MVC tomcat deployment issues - spring-mvc

Question

I am developing one Spring Web application with Intellij IDEA deployed to tomcat.
I met the issues below:
When I set the application context to the application name(my app) in the Run/Debug configuration page then run tomcat i can access the tomcat homepage and can see "myapp" in the manager page but can't access it.
The URL will be "localhost:8080/request" when clicking myapp in the manager page.
I have to add "myapp" to the URL as "localhost:8080/myapp/request".In this way the requested page can be accessed.
But if i removed "/myapp" from application context leaving it blank in the Run/Debug configuration page then run tomcat i will access the requested page successfully.
The URL is "localhost:8080/request" now the same as before without "myapp".
If I just added the myapp.war file in /webapps folder the result is the same as the first scenario.
What i want is that I put the war file in /webapps folder and start the tomcat server then the page can be accessed.
Anything wrong i have done for the configuration or missed something?
Thanks in advance for the help.
This is the web.xml
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/root-context.xml
</param-value>
</context-param>
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/log4j.properties</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<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>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.gif</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>