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).setUseLastModified(this.resourceProperties.getCache().isUseLastModified()));
}
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).setUseLastModified(this.resourceProperties.getCache().isUseLastModified()));
}
}
}
/webjars/**都去
classpath:/META-INF/resources/webjars/找资源； webjars：以jar的方式导入静态资源；https://www.webjars.org/
localhost:8081/webjars/jquery/3.3.1/jquery.js访问
<!-- 引入jquery的web模块-->在访问的时候只需要写webjars下的资源的名称
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.3.1</version>
</dependency>
2./** 访问当前项目的任何资源，（静态资源的文件夹）
“classPath：/META-INF/resources/” "classPath:/resources/" "classPath:/static/" "classPath:/public" "/" 当前项目根路径
localhost:8081/abc ===去静态资源文件夹下找abc
//配置欢迎页的映射
@Bean public WelcomePageHandlerMapping welcomePageHandlerMapping(ApplicationContext applicationContext, FormattingConversionService mvcConversionService, ResourceUrlProvider mvcResourceUrlProvider) { WelcomePageHandlerMapping welcomePageHandlerMapping = new WelcomePageHandlerMapping(new TemplateAvailabilityProviders(applicationContext), applicationContext, this.getWelcomePage(), this.mvcProperties.getStaticPathPattern()); welcomePageHandlerMapping.setInterceptors(this.getInterceptors(mvcConversionService, mvcResourceUrlProvider)); welcomePageHandlerMapping.setCorsConfigurations(this.getCorsConfigurations()); return welcomePageHandlerMapping; }
3.欢迎页，静态资源文件夹下的所以index.html页面； 被/**映射
localhost:8081/ 找index
原文：https://www.cnblogs.com/gagaAurora/p/14024090.html