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Do not use Servlet 3.0 API in doOptions()

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Refactor FrameworkServlet.doOptions() to capture the "Allow" header
by using a HttpServletResponseWrapper.

Prior to this commit the HttpServletResponse.getHeader() method was
used which is only available in Servlet 3.0 environments.

Issue: SPR-10341
This commit is contained in:
Phillip Webb
2013-02-28 17:48:12 -08:00
parent c986a1efc1
commit b27fc0ef30
2 changed files with 17 additions and 5 deletions
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17
spring-webmvc/src/main/java/org/springframework/web/servlet/FrameworkServlet.java
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@@ -26,6 +26,7 @@ import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import org.springframework.beans.BeanUtils;
import org.springframework.context.ApplicationContext;
@@ -866,10 +867,18 @@ public abstract class FrameworkServlet extends HttpServletBean {
return;
}
}
super.doOptions(request, response);
String allowedMethods = response.getHeader("Allow");
allowedMethods += ", " + RequestMethod.PATCH.name();
response.setHeader("Allow", allowedMethods);
// Use response wrapper for Servlet 2.5 compatibility where
// the getHeader() method does not exist
super.doOptions(request, new HttpServletResponseWrapper(response) {
@Override
public void setHeader(String name, String value) {
if("Allow".equals(name)) {
value = (StringUtils.hasLength(value) ? value + ", " : "") + RequestMethod.PATCH.name();
}
super.setHeader(name, value);
}
});
}
/**