Spring Static Resource Mapping - spring

Question

I have been followed by this error since I started using Spring
I can't handle static content
My dispatcher-servlet configuration
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<import resource="applicationContext.xml"/>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WEB-INF/jsp/"
p:suffix=".jsp" />
<mvc:resources mapping="/captcha/*" location="/resources/captcha/" />
<mvc:annotation-driven />
<mvc:default-servlet-handler/>
</beans>
My web configuration
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<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>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</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>*.jpg</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.PNG</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>Login.jsp</welcome-file>
</welcome-file-list>
</web-app>
Finally the image I want to add is
<img src="<c:url value="/resources/captcha/13.PNG"/>"/>
But my log displays this:
01:19:10,801 DEBUG RequestMappingHandlerMapping:220 - Looking up handler method for path /resources/captcha/35.png
01:19:10,803 DEBUG RequestMappingHandlerMapping:230 - Did not find handler method for [/resources/captcha/35.png]
01:19:10,803 DEBUG SimpleUrlHandlerMapping:169 - Matching patterns for request [/resources/captcha/35.png] are [/**]
01:19:10,804 DEBUG SimpleUrlHandlerMapping:194 - URI Template variables for request [/resources/captcha/35.png] are {}
01:19:10,805 DEBUG SimpleUrlHandlerMapping:124 - Mapping [/resources/captcha/35.png] to HandlerExecutionChain with handler [org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler#eea824] and 1 interceptor
01:19:10,805 DEBUG DispatcherServlet:912 - Last-Modified value for [/project/resources/captcha/35.png] is: -1
01:19:10,805 DEBUG DispatcherServlet:999 - Null ModelAndView returned to DispatcherServlet with name 'dispatcher': assuming HandlerAdapter completed request handling
01:19:10,806 DEBUG DispatcherServlet:966 - Successfully completed request
Am I missing more configuration?
Thanks

Answer 1

When you try to access
/resources/captcha/13.PNG
It is mapped to default servlet by virtue of
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.PNG</url-pattern>
</servlet-mapping>
It is not mapped to /resources/captcha/ because the resources looks for paths which have the pattern of type http://localhost:8080/captcha/* and not the ones with http://localhost:8080/resources/captcha/* so to handle such requests, you need to have a view resolver to respond to /resources/* pattern
something like
#RequestMapping(path = '/resources/*')
public Object handler(){...}
My guess is you want to render the PNG image as a static resource and you should probably have <img src="<c:url value="/resources/captcha/13.PNG"/>"/>.
NOTE: I am not sure what I suggested works or not. I am answering solely based on my memory and have not tested any of the situations you mentioned.