SpringBoot Web开发if (!this.resourceProperties.logger.Duration

web自动配置规则

WebMvcAutoConfiguration
WebMvcProperties
ViewResolver自动配置
静态资源自动映射
Formatter与Converter自动配置
HttpMessageConverter自动配置
静态首页
favicon
错误处理

SpringBoot对于静态资源的映射规则

webMvcAutoConfiguration类的addResourceHandlers方法（添加资源的映射）

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

        String staticPathPattern = this.mvcProperties.getStaticPathPattern();
        if (!registry.hasMappingForPattern(staticPathPattern)) {
            this.customizeResourceHandlerRegistration(registry.addResourceHandler(new String[]{staticPathPattern}).addResourceLocations(WebMvcAutoConfiguration.getResourceLocations(this.resourceProperties.getStaticLocations())).setCachePeriod(this.getSeconds(cachePeriod)).setCacheControl(cacheControl));
        }

    }
}

所有的/webjars/**都要去classpath:/META-INF/resources/webjars/路径下找资源
webjars：以jar包的形式引入静态资源

资源映射

数组中的值	在项目中的位置
classpath:/META-INF/resources/	src/main/resources/META-INF/resources/
classpath:/resources/	src/main/resources/resources/
classpath:/static/	src/main/resources/static/
classpath:/public/	src/main/resources/public/

网站图标映射

图标一般为favicon.ico格式的文件，一般都是在静态资源文件夹下