java.lang.Object
- org.springframework.web.servlet.resource.ResourceUrlProvider

所有已实现的接口:
EventListener, ApplicationListener<ContextRefreshedEvent>
```
public class ResourceUrlProvider
extends Object
implements ApplicationListener<ContextRefreshedEvent>
```
A central component to use to obtain the public URL path that clients should use to access a static resource.
This class is aware of Spring MVC handler mappings used to serve static resources and uses the ResourceResolver chains of the configured ResourceHttpRequestHandlers to make its decisions.
从以下版本开始:
4.1
作者:
Rossen Stoyanchev

字段概要
字段
修饰符和类型字段说明
protected Log logger

构造器概要
构造器
构造器说明
ResourceUrlProvider()

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
`protected void`	`detectResourceHandlers(ApplicationContext appContext)`
`String`	`getForLookupPath(String lookupPath)`	Compare the given path against configured resource handler mappings and if a match is found use the `ResourceResolver` chain of the matched `ResourceHttpRequestHandler` to resolve the URL path to expose for public use.
`String`	`getForRequestUrl(HttpServletRequest request, String requestUrl)`	A variation on `getForLookupPath(String)` that accepts a full request URL path (i.e. including context and servlet path) and returns the full request URL path to expose for public use.
`Map<String,ResourceHttpRequestHandler>`	`getHandlerMap()`	Return the resource mappings, either manually configured or auto-detected when the Spring `ApplicationContext` is refreshed.
`PathMatcher`	`getPathMatcher()`	Return the configured `PathMatcher`.
`UrlPathHelper`	`getUrlPathHelper()`	Return the configured `UrlPathHelper`.
`boolean`	`isAutodetect()`	Return `false` if resource mappings were manually configured, `true` otherwise.
`void`	`onApplicationEvent(ContextRefreshedEvent event)`	Handle an application event.
`void`	`setHandlerMap(Map<String,ResourceHttpRequestHandler> handlerMap)`	Manually configure the resource mappings.
`void`	`setPathMatcher(PathMatcher pathMatcher)`	Configure a `PathMatcher` to use when comparing target lookup path against resource mappings.
`void`	`setUrlPathHelper(UrlPathHelper urlPathHelper)`	Configure a `UrlPathHelper` to use in `getForRequestUrl(javax.servlet.http.HttpServletRequest, String)` in order to derive the lookup path for a target request URL path.

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
  - logger
```
protected final Log logger
```
- 构造器详细资料
  - ResourceUrlProvider
```
public ResourceUrlProvider()
```
- 方法详细资料
  - setUrlPathHelper
```
public void setUrlPathHelper(UrlPathHelper urlPathHelper)
```
    Configure a UrlPathHelper to use in getForRequestUrl(javax.servlet.http.HttpServletRequest, String) in order to derive the lookup path for a target request URL path.
  - getUrlPathHelper
```
public UrlPathHelper getUrlPathHelper()
```
    Return the configured UrlPathHelper.
    从以下版本开始:
    4.2.8
  - setPathMatcher
```
public void setPathMatcher(PathMatcher pathMatcher)
```
    Configure a PathMatcher to use when comparing target lookup path against resource mappings.
  - getPathMatcher
```
public PathMatcher getPathMatcher()
```
    Return the configured PathMatcher.
  - setHandlerMap
```
public void setHandlerMap(@Nullable
                          Map<String,ResourceHttpRequestHandler> handlerMap)
```
    Manually configure the resource mappings.
    Note: by default resource mappings are auto-detected from the Spring ApplicationContext. However if this property is used, the auto-detection is turned off.
  - getHandlerMap
```
public Map<String,ResourceHttpRequestHandler> getHandlerMap()
```
    Return the resource mappings, either manually configured or auto-detected when the Spring ApplicationContext is refreshed.
  - isAutodetect
```
public boolean isAutodetect()
```
    Return false if resource mappings were manually configured, true otherwise.
  - onApplicationEvent
```
public void onApplicationEvent(ContextRefreshedEvent event)
```
    从接口复制的说明: ApplicationListener
    Handle an application event.
    指定者:
    onApplicationEvent 在接口中 ApplicationListener<ContextRefreshedEvent>
    参数:
    event - the event to respond to
  - detectResourceHandlers
```
protected void detectResourceHandlers(ApplicationContext appContext)
```
  - getForRequestUrl
```
@Nullable
public final String getForRequestUrl(HttpServletRequest request,
                                     String requestUrl)
```
    A variation on getForLookupPath(String) that accepts a full request URL path (i.e. including context and servlet path) and returns the full request URL path to expose for public use.
    参数:
    request - the current request
    requestUrl - the request URL path to resolve
    返回:
    the resolved public URL path, or null if unresolved
  - getForLookupPath
```
@Nullable
public final String getForLookupPath(String lookupPath)
```
    Compare the given path against configured resource handler mappings and if a match is found use the ResourceResolver chain of the matched ResourceHttpRequestHandler to resolve the URL path to expose for public use.
    It is expected that the given path is what Spring MVC would use for request mapping purposes, i.e. excluding context and servlet path portions.
    If several handler mappings match, the handler used will be the one configured with the most specific pattern.
    参数:
    lookupPath - the lookup path to check
    返回:
    the resolved public URL path, or null if unresolved

类 ResourceUrlProvider

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

logger

构造器详细资料

ResourceUrlProvider

方法详细资料

setUrlPathHelper

getUrlPathHelper

setPathMatcher

getPathMatcher

setHandlerMap

getHandlerMap

isAutodetect

onApplicationEvent

detectResourceHandlers

getForRequestUrl

getForLookupPath