今天小编给大家分享一下SpringBoot Web静态资源规则与定制化怎么处理的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。
1.相关概念
Spring Boot 默认为我们提供了静态资源处理，使用 WebMvcAutoConfiguration 中的配置各种属性。
建议使用Spring Boot的默认配置方式，如果需要特殊处理的再通过配置文件进行修改。
如果想要自己完全控制WebMVC，就需要在@Configuration注解的配置类上增加@EnableWebMvc, 增加该注解以后WebMvcAutoConfiguration中配置就不会生效，你需要自己来配置需要的每一项(可以使用继承)。
2.静态资源目录
默认只要静态资源放在类路径(resources)下：
/static
/public
/resources
/META-INF/resources
浏览器访问： 当前项目根路径/ + 静态资源名
请求进来，先去找Controller看能不能处理。不能处理的所有请求又都交给静态资源处理器。静态资源也找不到则响应404页面。
我们在controller里写个测试方法来测试一下
把controller里的方法注释后
也可以改变默认的静态资源路径，/static，/public,/resources, /META-INF/resources失效
application.properties
#静态资源路径
spring.resources.static-locations=classpath:/dir1/,classpath:/dir2/
3.静态资源访问前缀
application.properties
#静态资源访问前缀, 就是浏览器网址路径加前缀
spring.mvc.static-path-pattern=/res/**
4.欢迎页支持
就是网址上没有访问映射时, 会自动跳转到欢迎页,
静态资源路径下 index.html。
可以配置静态资源路径
但是不可以配置静态资源的访问前缀。否则导致 index.html不能被默认访问
5.自定义favicon
指网页标签上的小图标。
favicon.ico 放在静态资源目录下即可。
6.源码分析
SpringBoot启动默认加载 xxxAutoConfiguration 类（自动配置类）
SpringMVC功能的自动配置类WebMvcAutoConfiguration生效
@AutoConfiguration( after = {DispatcherServletAutoConfiguration.class, TaskExecutionAutoConfiguration.class, ValidationAutoConfiguration.class})@ConditionalOnWebApplication( type = Type.SERVLET)@ConditionalOnClass({Servlet.class, DispatcherServlet.class, WebMvcConfigurer.class})@ConditionalOnMissingBean({WebMvcConfigurationSupport.class})@AutoConfigureOrder(-2147483638)public class WebMvcAutoConfiguration { public static final String DEFAULT_PREFIX = ""; public static final String DEFAULT_SUFFIX = ""; public static final PathPatternParser pathPatternParser = new PathPatternParser(); private static final String SERVLET_LOCATION = "/"; public WebMvcAutoConfiguration() { }给容器中配置的内容：
配置文件的相关属性的绑定：WebMvcProperties == spring.mvc、WebProperties==spring.web
@Import({WebMvcAutoConfiguration.EnableWebMvcConfiguration.class}) @EnableConfigurationProperties({WebMvcProperties.class, WebProperties.class}) @Order(0) public static class WebMvcAutoConfigurationAdapter implements WebMvcConfigurer, ServletContextAware { private static final Log logger = LogFactory.getLog(WebMvcConfigurer.class); private final Resources resourceProperties; private final WebMvcProperties mvcProperties; private final ListableBeanFactory beanFactory; private final ObjectProvider<HttpMessageConverters> messageConvertersProvider; private final ObjectProvider<DispatcherServletPath> dispatcherServletPath; private final ObjectProvider<ServletRegistrationBean<?>> servletRegistrations; private final WebMvcAutoConfiguration.ResourceHandlerRegistrationCustomizer resourceHandlerRegistrationCustomizer; private ServletContext servletContext;配置类只有一个有参构造器
public WebMvcAutoConfigurationAdapter(WebProperties webProperties, WebMvcProperties mvcProperties, ListableBeanFactory beanFactory, ObjectProvider<HttpMessageConverters> messageConvertersProvider, ObjectProvider<WebMvcAutoConfiguration.ResourceHandlerRegistrationCustomizer> resourceHandlerRegistrationCustomizerProvider, ObjectProvider<DispatcherServletPath> dispatcherServletPath, ObjectProvider<ServletRegistrationBean<?>> servletRegistrations) { this.resourceProperties = webProperties.getResources(); this.mvcProperties = mvcProperties; this.beanFactory = beanFactory; this.messageConvertersProvider = messageConvertersProvider; this.resourceHandlerRegistrationCustomizer = (WebMvcAutoConfiguration.ResourceHandlerRegistrationCustomizer)resourceHandlerRegistrationCustomizerProvider.getIfAvailable(); this.dispatcherServletPath = dispatcherServletPath; this.servletRegistrations = servletRegistrations; this.mvcProperties.checkConfiguration(); }ResourceProperties resourceProperties；获取和spring.resources绑定的所有的值的对象
WebMvcProperties mvcProperties 获取和spring.mvc绑定的所有的值的对象
ListableBeanFactory beanFactory Spring的beanFactory
HttpMessageConverters 找到所有的HttpMessageConverters
ResourceHandlerRegistrationCustomizer 找到 资源处理器的自定义器。
DispatcherServletPath
ServletRegistrationBean 给应用注册Servlet、Filter…
资源处理的默认规则
public void addResourceHandlers(ResourceHandlerRegistry registry) { if (!this.resourceProperties.isAddMappings()) { logger.debug("Default resource handling disabled"); } else { this.addResourceHandler(registry, "/webjars/**", "classpath:/META-INF/resources/webjars/"); this.addResourceHandler(registry, this.mvcProperties.getStaticPathPattern(), (registration) -> { registration.addResourceLocations(this.resourceProperties.getStaticLocations()); if (this.servletContext != null) { ServletContextResource resource = new ServletContextResource(this.servletContext, "/"); registration.addResourceLocations(new Resource[]{resource}); } }); } }根据上述代码，我们可以同过配置禁止所有静态资源规则。
application.properties
#禁用所有静态资源规则
spring.web.resources.add-mappings=false
静态资源处理规则：
public static class Resources { private static final String[] CLASSPATH_RESOURCE_LOCATIONS = new String[]{"classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/"}; private String[] staticLocations; private boolean addMappings; private boolean customized; private final WebProperties.Resources.Chain chain; private final WebProperties.Resources.Cache cache;欢迎页处理规则:
@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; } WelcomePageHandlerMapping(TemplateAvailabilityProviders templateAvailabilityProviders, ApplicationContext applicationContext, Resource welcomePage, String staticPathPattern) { if (welcomePage != null && "/**".equals(staticPathPattern)) { logger.info("Adding welcome page: " + welcomePage); this.setRootViewName("forward:index.html"); } else if (this.welcomeTemplateExists(templateAvailabilityProviders, applicationContext)) { logger.info("Adding welcome page template: index"); this.setRootViewName("index"); } }以上就是“SpringBoot Web静态资源规则与定制化怎么处理”这篇文章的所有内容，感谢各位的阅读！相信大家阅读完这篇文章都有很大的收获，小编每天都会为大家更新不同的知识，如果还想学习更多的知识，请关注编程网行业资讯频道。
