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This commit is contained in:
Juergen Hoeller
2017-02-20 23:15:05 +01:00
parent f117b804a8
commit 35e37f6b60
3 changed files with 28 additions and 23 deletions
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31
spring-web/src/main/java/org/springframework/web/filter/ShallowEtagHeaderFilter.java
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@@ -19,7 +19,6 @@ package org.springframework.web.filter;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
@@ -46,6 +45,7 @@ import org.springframework.web.util.WebUtils;
*
* @author Arjen Poutsma
* @author Rossen Stoyanchev
* @author Brian Clozel
* @author Juergen Hoeller
* @since 3.0
*/
@@ -61,32 +61,37 @@ public class ShallowEtagHeaderFilter extends OncePerRequestFilter {
private static final String STREAMING_ATTRIBUTE = ShallowEtagHeaderFilter.class.getName() + ".STREAMING";
/** Checking for Servlet 3.0+ HttpServletResponse.getHeader(String) */
private static final boolean servlet3Present =
ClassUtils.hasMethod(HttpServletResponse.class, "getHeader", String.class);
private boolean writeWeakETag = false;
/**
* Set whether the ETag value written to the response should be weak, as per rfc7232.
* <p>Should be configured using an {@code <init-param>} for parameter name
* "writeWeakETag" in the filter definition in {@code web.xml}.
* @see <a href="https://tools.ietf.org/html/rfc7232#section-2.3">rfc7232 section-2.3</a>
*/
public boolean isWriteWeakETag() {
return writeWeakETag;
}
/**
* Return whether the ETag value written to the response should be weak, as per rfc7232.
* Set whether the ETag value written to the response should be weak, as per RFC 7232.
* <p>Should be configured using an {@code <init-param>} for parameter name
* "writeWeakETag" in the filter definition in {@code web.xml}.
* @since 4.3
* @see <a href="https://tools.ietf.org/html/rfc7232#section-2.3">RFC 7232 section 2.3</a>
*/
public void setWriteWeakETag(boolean writeWeakETag) {
this.writeWeakETag = writeWeakETag;
}
/**
* The default value is "false" so that the filter may delay the generation of
* an ETag until the last asynchronously dispatched thread.
* Return whether the ETag value written to the response should be weak, as per RFC 7232.
* @since 4.3
*/
public boolean isWriteWeakETag() {
return this.writeWeakETag;
}
/**
* The default value is {@code false} so that the filter may delay the generation
* of an ETag until the last asynchronously dispatched thread.
*/
@Override
protected boolean shouldNotFilterAsyncDispatch() {