程序包 cn.taketoday.web.resource

类 CssLinkResourceTransformer

java.lang.Object

cn.taketoday.web.resource.ResourceTransformerSupport

cn.taketoday.web.resource.CssLinkResourceTransformer

所有已实现的接口:

ResourceTransformer

public class CssLinkResourceTransformer
extends ResourceTransformerSupport

A ResourceTransformer implementation that modifies links in a CSS file to match the public URL paths that should be exposed to clients (e.g. with an MD5 content-based hash inserted in the URL).

The implementation looks for links in CSS @import statements and also inside CSS url() functions. All links are then passed through the ResourceResolvingChain and resolved relative to the location of the containing CSS file. If successfully resolved, the link is modified, otherwise the original link is preserved.

从以下版本开始:

4.0

作者:

Rossen Stoyanchev

嵌套类概要

嵌套类

修饰符和类型	类	说明
protected static class	CssLinkResourceTransformer.AbstractLinkParser	Abstract base class for CssLinkResourceTransformer.LinkParser implementations.
private static class	CssLinkResourceTransformer.ContentChunkInfo
private static class	CssLinkResourceTransformer.ImportStatementLinkParser
protected static interface	CssLinkResourceTransformer.LinkParser	Extract content chunks that represent links.
private static class	CssLinkResourceTransformer.UrlFunctionLinkParser

字段概要

字段

修饰符和类型	字段	说明
private static final Charset	DEFAULT_CHARSET
private final List<CssLinkResourceTransformer.LinkParser>	linkParsers
private static final cn.taketoday.logging.Logger	logger

构造器概要

构造器

构造器	说明
CssLinkResourceTransformer()

方法概要

修饰符和类型	方法	说明
private boolean	hasScheme(String link)
cn.taketoday.core.io.Resource	transform(RequestContext request, cn.taketoday.core.io.Resource resource, ResourceTransformerChain transformerChain)	Transform the given resource.

从类继承的方法 cn.taketoday.web.resource.ResourceTransformerSupport

getResourceUrlProvider, resolveUrlPath, setResourceUrlProvider, toAbsolutePath

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

DEFAULT_CHARSET

private static final Charset DEFAULT_CHARSET

logger

private static final cn.taketoday.logging.Logger logger

linkParsers

private final List<CssLinkResourceTransformer.LinkParser> linkParsers

构造器详细资料

CssLinkResourceTransformer

public CssLinkResourceTransformer()

方法详细资料

transform

public cn.taketoday.core.io.Resource transform(RequestContext request,
 cn.taketoday.core.io.Resource resource,
 ResourceTransformerChain transformerChain)
                                        throws IOException

从接口复制的说明: ResourceTransformer

Transform the given resource.

参数:

request - the current request

resource - the resource to transform

transformerChain - the chain of remaining transformers to delegate to

返回:

the transformed resource (never null)

抛出:

IOException - if the transformation fails

hasScheme

private boolean hasScheme(String link)