GWT & Spring Security: org.springframework.beans.factory.NoSuchBeanDefinitionException - spring

Question

I'm following this tutorial to secure my GWT application with Spring Security.
However, putting
<!-- Spring Security -->
<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>/app</url-pattern>
</filter-mapping>
<!-- END FILTERS -->
<!-- BEGIN Listeners -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- END Listeners -->
<context-param>
<param-name>
contextConfigLocation
</param-name>
<param-value>
classpath:/**/spring-config.xml
</param-value>
</context-param>
into my web.xml file results in an org.springframework.beans.factory.NoSuchBeanDefinitionException exception. Stack trace:
org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'springSecurityFilterChain' is defined
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:660)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1157)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:280)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:962)
at org.springframework.web.filter.DelegatingFilterProxy.initDelegate(DelegatingFilterProxy.java:324)
at org.springframework.web.filter.DelegatingFilterProxy.initFilterBean(DelegatingFilterProxy.java:235)
at org.springframework.web.filter.GenericFilterBean.init(GenericFilterBean.java:199)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:281)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:262)
...
I don't understand why I'm getting this exception - what am I missing?

Answer 1

DelegatingFilterProxy is a Spring Framework class which delegates to a filter implementation which is defined as a Spring bean in your application context. In this case, the bean is named “springSecurityFilterChain”, which is an internal infrastructure bean created by the namespace to handle web security. Note that you should not use this bean name yourself. Once you've added this to your web.xml, you're ready to start editing your application context file. Web security services are configured using the element.
You should check your spring configuration, dependencies...
Also here is good example of simple Spring security
http://www.mkyong.com/spring-security/spring-security-hello-world-example/

Answer 2

Have you defined context-param in your web.xml? for e.g,
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:/META-INF/spring/applicationContext-security.xml
classpath*:/META-INF/spring/applicationContext.xml
classpath*:/META-INF/spring/applicationContext-gwt-dispatch.xml
</param-value>
</context-param>
And in your Spring application context, you have to declare a Spring beans XML file "applicationContext-security.xml" in this case as below,
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:security="http://www.springframework.org/schema/security"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd">
<context:property-placeholder location="classpath*:/META-INF/spring/gwtsecurity.properties" />
<security:user-service id="userService">
<security:user name="user" password="user" authorities="ROLE_USER" />
<security:user name="admin" password="admin" authorities="ROLE_USER, ROLE_ADMIN" />
</security:user-service>
...
<alias name="filterChainProxy" alias="springSecurityFilterChain" />
<bean id="filterChainProxy" class="org.springframework.security.web.FilterChainProxy">
<security:filter-chain-map path-type="ant">
<security:filter-chain
filters="securityContextFilter, logoutFilter, formLoginFilter, requestCacheFilter,
servletApiFilter, rememberMeFilter, anonFilter, sessionMgmtFilter, exceptionTranslator, filterSecurityInterceptor"
pattern="/**" />
</security:filter-chain-map>
</bean>
<bean
...
</bean>
...
</beans>
Ref: https://github.com/dmartinpro/gwt-security/tree/master/gwt-security-sample