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Do not execute ResourceUrlEncodingFilter only once per request

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In case the filter is also registered to the ERROR dispatcher, the
following happens:
* the filter is executed once for the regular execution
* the filter should be executed a second time when dispatched to error

Since the filter is a `OncePerRequestFilter`, the filter is only
executed once and won't be executed when handling the error.

This can lead to situations like spring-projects/spring-boot#7348

This commit makes this filter a simple `GenericFilterBean`.

Issue: SPR-14891
This commit is contained in:
Brian Clozel
2016-11-16 19:02:20 +01:00
parent 9bcc7c3b06
commit b10045dc0e
2 changed files with 32 additions and 47 deletions
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18
spring-webmvc/src/main/java/org/springframework/web/servlet/resource/ResourceUrlEncodingFilter.java
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@@ -19,6 +19,8 @@ package org.springframework.web.servlet.resource;
import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
@@ -26,7 +28,7 @@ import javax.servlet.http.HttpServletResponseWrapper;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.filter.OncePerRequestFilter;
import org.springframework.web.filter.GenericFilterBean;
import org.springframework.web.util.UrlPathHelper;
/**
@@ -41,16 +43,20 @@ import org.springframework.web.util.UrlPathHelper;
* @author Brian Clozel
* @since 4.1
*/
public class ResourceUrlEncodingFilter extends OncePerRequestFilter {
public class ResourceUrlEncodingFilter extends GenericFilterBean {
private static final Log logger = LogFactory.getLog(ResourceUrlEncodingFilter.class);
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
throws ServletException, IOException {
filterChain.doFilter(request, new ResourceUrlEncodingResponseWrapper(request, response));
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain)
throws IOException, ServletException {
if (!(request instanceof HttpServletRequest) || !(response instanceof HttpServletResponse)) {
throw new ServletException("ResourceUrlEncodingFilter just supports HTTP requests");
}
HttpServletRequest httpRequest = (HttpServletRequest) request;
HttpServletResponse httpResponse = (HttpServletResponse) response;
filterChain.doFilter(httpRequest, new ResourceUrlEncodingResponseWrapper(httpRequest, httpResponse));
}