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The knowledge points of this article "SpringBoot static resource mapping method" are not quite understood by most people, so the editor summarizes the following content, detailed content, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "SpringBoot static resource mapping method" article.

Static resource mapping

SpringBoot's automatic configuration of SpringMVC is in the WebMVCAutoConfiguration class.

One of the static inner classes, WebMvcAutoConfigurationAdapter, implements the WebMvcConfigurer interface. (361)

The default mapping relationship for addResourceHandlers to handle static resources is defined in the WebMvcConfigurer interface.

AddResourceHandlers is implemented in the WebMvcAutoConfigurationAdapter class

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));}

Among them

This.resourceProperties.getStaticLocations ()

Returns the default mapping of static resources

The getStaticLocations () method is defined in ResourceProperties

Among them

Private static final String [] CLASSPATH_RESOURCE_LOCATIONS = new String [] {"classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/"}

Classpath:/META-INF/resources/

Classpath:/resources/

Classpath:/static/

Classpath:/public/

The fifth default resource mapping: defined in the static method getResourceLocations

/

Summary:

By default, static resources can be placed in the following five locations

Classpath:/META-INF/resources/classpath:/resources/classpath:/static/classpath:/public//

[static resources are generally placed in the classpath:/static/ directory]

Custom favicon, custom index.html

Favicon.ico is the icon in the upper left corner of the browser, which can be placed under the static resource path or under the classpath. The static resource path has high priority.

After SpringBoot starts, it looks for index.html in the static resource directory by default. If it is not found, it will go to the resource/templates directory to look for index.html (using Thymeleaf template).

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