Springboot静态资源使用说明

男娘i 2021-07-24 20:54 302阅读 0赞

**目录**

点睛

关键源码

访问webjar中的静态资源

--------------------

# 点睛 #

1 在Springboot，我们可以使用以下方式处理静态资源

webjars：映射 localhost:8080/webjars/

public,static,/\*\*,resources  映射 localhost:8080/

2 优先级：resources>static(默认)>public

3 webjars

说明： [http://www.mamicode.com/info-detail-2081046.html][http_www.mamicode.com_info-detail-2081046.html]

官网： [https://www.webjars.org/][https_www.webjars.org]

# 关键源码 #

1 资源加载的位置（ResourceProperties）

@ConfigurationProperties(prefix = "spring.resources", ignoreUnknownFields = false)
    public class ResourceProperties {
    
    
       private static final String[] CLASSPATH_RESOURCE_LOCATIONS = {
             "classpath:/META-INF/resources/", "classpath:/resources/",
             "classpath:/static/", "classpath:/public/" };

2 加载资源源代码（WebMvcAutoConfiguration）

@Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
       if (!this.resourceProperties.isAddMappings()) {
          logger.debug("Default resource handling disabled");
          return;
       }
       Duration cachePeriod = this.resourceProperties.getCache().getPeriod();
       CacheControl cacheControl = this.resourceProperties.getCache()
             .getCachecontrol().toHttpCacheControl();
       if (!registry.hasMappingForPattern("/webjars/**")) {
          customizeResourceHandlerRegistration(registry
                .addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/")
                .setCachePeriod(getSeconds(cachePeriod))
                .setCacheControl(cacheControl));
       }
       String staticPathPattern = this.mvcProperties.getStaticPathPattern();
       if (!registry.hasMappingForPattern(staticPathPattern)) {
          customizeResourceHandlerRegistration(
                registry.addResourceHandler(staticPathPattern)
                      .addResourceLocations(getResourceLocations(
                            this.resourceProperties.getStaticLocations()))
                      .setCachePeriod(getSeconds(cachePeriod))
                      .setCacheControl(cacheControl));
       }
    }

# 访问webjar中的静态资源 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

[http_www.mamicode.com_info-detail-2081046.html]: http://www.mamicode.com/info-detail-2081046.html
[https_www.webjars.org]: https://www.webjars.org/
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/b58a3837dc1d452db5765a6169b0547b.png