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POIssue while redirecting from a filter
 

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  1. POIssue while redirecting from a filter
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    <p>I have an issue with a filter in an Spring 3 MVC web application. My enviroment is configured as followed: SpringSource Tool Suite, JDK 7, Tomcat 7, Maven 3.0.2, Hibernate 3 and MySQL 5 database.</p> <p>What I want:</p> <ul> <li>Implement a filter in order that it handles all the incoming HTTP requests (to do some URL blocking) and then forward the request to the Spring handler mapper.</li> </ul> <p>What I get:</p> <ul> <li>When I start the server (Tomcat) everything works fine and the main page (index.jsp) is shown.</li> <li>When I debug, I can see that the filter is intercepting the HTTP request as expected and forwarding to the next filter in the chain. However, when I try accessing an URL from a link in the main page and this link is mapped to a method using the DefaultAnnotationHandlerMapping (e.g annotated with @RequestMethod()), it intercepts the URL but the forward doesn't work as expected (seems to not being intercepted by the DefaultAnnotationHandlerMapping) and it shows an ERROR 404 (resource not available) in the browser.</li> </ul> <p>To provide you some information, these are my files:</p> <p><strong>web.xml:</strong></p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;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 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"&gt; &lt;display-name&gt;cheapig&lt;/display-name&gt; &lt;!--Definição do Contexto Global do Container do Spring com recursos (beans) que são compartilhados com TODOS os Servlets e Filtros --&gt; &lt;context-param&gt; &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt; &lt;param-value&gt;/WEB-INF/spring/root-context.xml&lt;/param-value&gt; &lt;/context-param&gt; &lt;!-- Cria o container do Spring compartilhado com todos os Servlets e Filtros --&gt; &lt;listener&gt; &lt;listener-class&gt;org.springframework.web.context.ContextLoaderListener&lt;/listener-class&gt; &lt;/listener&gt; &lt;!-- Filtro para controlar acesso --&gt; &lt;filter&gt; &lt;filter-name&gt;cheapigFilter&lt;/filter-name&gt; &lt;filter-class&gt;org.springframework.web.filter.DelegatingFilterProxy&lt;/filter-class&gt; &lt;/filter&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;cheapigFilter&lt;/filter-name&gt; &lt;url-pattern&gt;/*&lt;/url-pattern&gt; &lt;/filter-mapping&gt; &lt;!-- Definição do Servlet que processa todos os requests da aplicação. Como se está utilizando o Framework Spring, o servlet é o DispatcherServlet. --&gt; &lt;servlet&gt; &lt;servlet-name&gt;cheapig&lt;/servlet-name&gt; &lt;servlet-class&gt;org.springframework.web.servlet.DispatcherServlet&lt;/servlet-class&gt; &lt;init-param&gt; &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt; &lt;param-value&gt;/WEB-INF/spring/cheapig/servlet-context.xml&lt;/param-value&gt; &lt;/init-param&gt; &lt;load-on-startup&gt;1&lt;/load-on-startup&gt; &lt;/servlet&gt; &lt;!-- Mapeamento dos Servlets e URLs --&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;cheapig&lt;/servlet-name&gt; &lt;url-pattern&gt;*.html&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;/web-app&gt; </code></pre> <p><strong>root-context.xml:</strong></p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" 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/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd"&gt; &lt;!-- Root Context: defines shared resources visible to all other web components --&gt; &lt;!-- Configurações de Internacionalização --&gt; &lt;bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource"&gt; &lt;property name="basename" value="classpath:messages" /&gt; &lt;property name="defaultEncoding" value="latin1"/&gt; &lt;/bean&gt; &lt;bean id="localeChangeInterceptor" class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor"&gt; &lt;property name="paramName" value="lang" /&gt; &lt;/bean&gt; &lt;bean id="localeResolver" class="org.springframework.web.servlet.i18n.CookieLocaleResolver"&gt; &lt;property name="defaultLocale" value="pt"/&gt; &lt;/bean&gt; &lt;bean id="cheapigFilter" class="br.com.cheapig.seguranca.SegurancaFilter" /&gt; &lt;bean id="handlerMapping" class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"&gt; &lt;property name="interceptors"&gt; &lt;ref bean="localeChangeInterceptor" /&gt; &lt;/property&gt; &lt;/bean&gt; &lt;/beans&gt; </code></pre> <p><strong>servlet-context.xml:</strong></p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;beans:beans xmlns="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd 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"&gt; &lt;!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure --&gt; &lt;!-- Enables the Spring MVC @Controller programming model --&gt; &lt;annotation-driven /&gt; &lt;!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory --&gt; &lt;resources mapping="/resources/**" location="/resources/" /&gt; &lt;!-- Imports user-defined @Controller beans that process client requests --&gt; &lt;beans:import resource="controllers.xml" /&gt; &lt;beans:import resource="hibernateMySQL5.xml"/&gt; &lt;beans:import resource="integracaoTiles2.xml"/&gt; &lt;beans:import resource="servicoEmail.xml"/&gt; &lt;context:component-scan base-package="br.com.cheapig" /&gt; &lt;/beans:beans&gt; </code></pre> <p><strong>SegurancaFilter.java:</strong></p> <pre><code>package br.com.cheapig.seguranca; import java.io.IOException; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class SegurancaFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { // TODO Auto-generated method stub } @Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { if (request instanceof HttpServletRequest) { HttpServletRequest req = (HttpServletRequest) request; HttpServletResponse res = (HttpServletResponse) response; String reqURI = req.getRequestURI(); System.out.println("Requested URI: " + reqURI); /*if(reqURI.equals("/cheapig/") || reqURI.contains("/cheapig/resources/")){ chain.doFilter(req, res); }else{ req.getRequestDispatcher("acesso/login").forward(req, res); }*/ chain.doFilter(request, response); } } @Override public void destroy() { // TODO Auto-generated method stub } } </code></pre> <p>What am I missing? Thanks in advance!</p>
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    1. PTQuestion
    1. USDave Newton
    1. USjguilhermemv
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    1. COI don't see a redirect in your filter... can you clarify?
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      1. POIssue while redirecting from a filter
      1. USChristopher Schultz
    2. COThis question was already solved! Thanks for trying to help!
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      1. POIssue while redirecting from a filter
      1. USjguilhermemv
 

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