java.lang.Object
- org.springframework.web.servlet.resource.AbstractResourceResolver
- - org.springframework.web.servlet.resource.VersionResourceResolver

所有已实现的接口:
ResourceResolver
```
public class VersionResourceResolver
extends AbstractResourceResolver
```
Resolves request paths containing a version string that can be used as part of an HTTP caching strategy in which a resource is cached with a date in the distant future (e.g. 1 year) and cached until the version, and therefore the URL, is changed.
Different versioning strategies exist, and this resolver must be configured with one or more such strategies along with path mappings to indicate which strategy applies to which resources.
ContentVersionStrategy is a good default choice except in cases where it cannot be used. Most notably the ContentVersionStrategy cannot be combined with JavaScript module loaders. For such cases the FixedVersionStrategy is a better choice.
Note that using this resolver to serve CSS files means that the CssLinkResourceTransformer should also be used in order to modify links within CSS files to also contain the appropriate versions generated by this resolver.
从以下版本开始:
4.1
作者:
Brian Clozel, Rossen Stoyanchev
另请参阅:
VersionStrategy

字段概要
- 从类继承的字段 org.springframework.web.servlet.resource.AbstractResourceResolver
  logger

构造器概要
构造器
构造器说明
VersionResourceResolver()

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`VersionResourceResolver`	`addContentVersionStrategy(String... pathPatterns)`	Insert a content-based version in resource URLs that match the given path patterns.
`VersionResourceResolver`	`addFixedVersionStrategy(String version, String... pathPatterns)`	Insert a fixed, prefix-based version in resource URLs that match the given path patterns, for example: `"{version}/js/main.js"`.
`VersionResourceResolver`	`addVersionStrategy(VersionStrategy strategy, String... pathPatterns)`	Register a custom VersionStrategy to apply to resource URLs that match the given path patterns.
`protected VersionStrategy`	`getStrategyForPath(String requestPath)`	Find a `VersionStrategy` for the request path of the requested resource.
`Map<String,VersionStrategy>`	`getStrategyMap()`	Return the map with version strategies keyed by path pattern.
`protected Resource`	`resolveResourceInternal(HttpServletRequest request, String requestPath, List<? extends Resource> locations, ResourceResolverChain chain)`
`protected String`	`resolveUrlPathInternal(String resourceUrlPath, List<? extends Resource> locations, ResourceResolverChain chain)`
`void`	`setStrategyMap(Map<String,VersionStrategy> map)`	Set a Map with URL paths as keys and `VersionStrategy` as values.

从类继承的方法 org.springframework.web.servlet.resource.AbstractResourceResolver
resolveResource, resolveUrlPath

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - VersionResourceResolver
```
public VersionResourceResolver()
```
- 方法详细资料
  - setStrategyMap
```
public void setStrategyMap(Map<String,VersionStrategy> map)
```
    Set a Map with URL paths as keys and VersionStrategy as values.
    Supports direct URL matches and Ant-style pattern matches. For syntax details, see the AntPathMatcher javadoc.
    参数:
    map - a map with URLs as keys and version strategies as values
  - getStrategyMap
```
public Map<String,VersionStrategy> getStrategyMap()
```
    Return the map with version strategies keyed by path pattern.
  - addContentVersionStrategy
```
public VersionResourceResolver addContentVersionStrategy(String... pathPatterns)
```
    Insert a content-based version in resource URLs that match the given path patterns. The version is computed from the content of the file, e.g. "css/main-e36d2e05253c6c7085a91522ce43a0b4.css". This is a good default strategy to use except when it cannot be, for example when using JavaScript module loaders, use addFixedVersionStrategy(java.lang.String, java.lang.String...) instead for serving JavaScript files.
    参数:
    pathPatterns - one or more resource URL path patterns, relative to the pattern configured with the resource handler
    返回:
    the current instance for chained method invocation
    另请参阅:
    ContentVersionStrategy
  - addFixedVersionStrategy
```
public VersionResourceResolver addFixedVersionStrategy(String version,
                                                       String... pathPatterns)
```
    Insert a fixed, prefix-based version in resource URLs that match the given path patterns, for example: "{version}/js/main.js". This is useful (vs. content-based versions) when using JavaScript module loaders.
    The version may be a random number, the current date, or a value fetched from a git commit sha, a property file, or environment variable and set with SpEL expressions in the configuration (e.g. see @Value in Java config).
    If not done already, variants of the given pathPatterns, prefixed with the version will be also configured. For example, adding a "/js/**" path pattern will also cofigure automatically a "/v1.0.0/js/**" with "v1.0.0" the version String given as an argument.
    参数:
    version - a version string
    pathPatterns - one or more resource URL path patterns, relative to the pattern configured with the resource handler
    返回:
    the current instance for chained method invocation
    另请参阅:
    FixedVersionStrategy
  - addVersionStrategy
```
public VersionResourceResolver addVersionStrategy(VersionStrategy strategy,
                                                  String... pathPatterns)
```
    Register a custom VersionStrategy to apply to resource URLs that match the given path patterns.
    参数:
    strategy - the custom strategy
    pathPatterns - one or more resource URL path patterns, relative to the pattern configured with the resource handler
    返回:
    the current instance for chained method invocation
    另请参阅:
    VersionStrategy
  - resolveResourceInternal
```
protected Resource resolveResourceInternal(@Nullable
                                           HttpServletRequest request,
                                           String requestPath,
                                           List<? extends Resource> locations,
                                           ResourceResolverChain chain)
```
    指定者:
    resolveResourceInternal 在类中 AbstractResourceResolver
  - resolveUrlPathInternal
```
protected String resolveUrlPathInternal(String resourceUrlPath,
                                        List<? extends Resource> locations,
                                        ResourceResolverChain chain)
```
    指定者:
    resolveUrlPathInternal 在类中 AbstractResourceResolver
  - getStrategyForPath
```
@Nullable
protected VersionStrategy getStrategyForPath(String requestPath)
```
    Find a VersionStrategy for the request path of the requested resource.
    返回:
    an instance of a VersionStrategy or null if none matches that request path

类 VersionResourceResolver

字段概要

从类继承的字段 org.springframework.web.servlet.resource.AbstractResourceResolver

构造器概要

方法概要

从类继承的方法 org.springframework.web.servlet.resource.AbstractResourceResolver

从类继承的方法 java.lang.Object

构造器详细资料

VersionResourceResolver

方法详细资料

setStrategyMap

getStrategyMap

addContentVersionStrategy

addFixedVersionStrategy

addVersionStrategy

resolveResourceInternal

resolveUrlPathInternal

getStrategyForPath