AppCacheManifestTransformer (Spring Framework 5.2.12.RELEASE API)

java.lang.Object
- org.springframework.web.reactive.resource.ResourceTransformerSupport
- - org.springframework.web.reactive.resource.AppCacheManifestTransformer

All Implemented Interfaces:
ResourceTransformer
```
public class AppCacheManifestTransformer
extends ResourceTransformerSupport
```
A ResourceTransformer HTML5 AppCache manifests.
This transformer:
- modifies links to match the public URL paths that should be exposed to clients, using configured ResourceResolver strategies
- appends a comment in the manifest, containing a Hash (e.g. "# Hash: 9de0f09ed7caf84e885f1f0f11c7e326"), thus changing the content of the manifest in order to trigger an appcache reload in the browser.
All files with an ".appcache" file extension (or the extension given to the constructor) will be transformed by this class. The hash is computed using the content of the appcache manifest so that changes in the manifest should invalidate the browser cache. This should also work with changes in referenced resources whose links are also versioned.
Since:
5.0
Author:
Rossen Stoyanchev, Brian Clozel
See Also:
HTML5 offline applications spec

Constructor Summary

Constructors
Constructor	Description
`AppCacheManifestTransformer()`	Create an AppCacheResourceTransformer that transforms files with extension ".appcache".
`AppCacheManifestTransformer(String fileExtension)`	Create an AppCacheResourceTransformer that transforms files with the extension given as a parameter.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`reactor.core.publisher.Mono<Resource>`	`transform(ServerWebExchange exchange, Resource inputResource, ResourceTransformerChain chain)`	Transform the given resource.

Methods inherited from class org.springframework.web.reactive.resource.ResourceTransformerSupport
getResourceUrlProvider, resolveUrlPath, setResourceUrlProvider, toAbsolutePath

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AppCacheManifestTransformer
```
public AppCacheManifestTransformer()
```
    Create an AppCacheResourceTransformer that transforms files with extension ".appcache".
  - AppCacheManifestTransformer
```
public AppCacheManifestTransformer(String fileExtension)
```
    Create an AppCacheResourceTransformer that transforms files with the extension given as a parameter.
- Method Detail
  - transform
```
public reactor.core.publisher.Mono<Resource> transform(ServerWebExchange exchange,
                                                       Resource inputResource,
                                                       ResourceTransformerChain chain)
```
    Description copied from interface: ResourceTransformer
    Transform the given resource.
    Parameters:
    exchange - the current exchange
    inputResource - the resource to transform
    chain - the chain of remaining transformers to delegate to
    Returns:
    the transformed resource (never empty)