Spring Boot2.0+中，自定义配置类扩展springMVC的功能

在spring boot1.0+，我们可以使用WebMvcConfigurerAdapter来扩展springMVC的功能，其中自定义的拦截器并不会拦截静态资源（js、css等）。

@Configuration
public class MyMvcConfig extends WebMvcConfigurerAdapter {@Overridepublic void addViewControllers(ViewControllerRegistry registry) {// super.addViewControllers(registry);//浏览器发送 /atguigu 请求来到 successregistry.addViewController("/atguigu").setViewName("success");}//所有的WebMvcConfigurerAdapter组件都会一起起作用@Bean //将组件注册在容器public WebMvcConfigurerAdapter webMvcConfigurerAdapter(){WebMvcConfigurerAdapter adapter = new WebMvcConfigurerAdapter() {@Overridepublic void addViewControllers(ViewControllerRegistry registry) {registry.addViewController("/").setViewName("login");registry.addViewController("/index.html").setViewName("login");registry.addViewController("/main.html").setViewName("dashboard");}//注册拦截器@Overridepublic void addInterceptors(InterceptorRegistry registry) {//super.addInterceptors(registry);//静态资源；  *.css , *.js//SpringBoot已经做好了静态资源映射registry.addInterceptor(new LoginHandlerInterceptor()).addPathPatterns("/**").excludePathPatterns("/index.html","/","/user/login");}};return adapter;}@Beanpublic LocaleResolver localeResolver(){return new MyLocaleResolver();}}

在spring boot2.0+以后，WebMvcConfigurerAdapter就过时了，目前通过继承WebMvcConfigurationSupport类（ps：继承后好像MVC自动配置不生效了）或者实现WebMvcConfigurer接口来扩展springMVC的功能。然而该版本自定义的拦截器会拦截静态资源，因此在使用spring2.0+时，配置拦截器之后，我们要把静态资源的路径加入到不拦截的路径之中。

@Configuration
public class MyMvcConfig implements WebMvcConfigurer{@Overridepublic void addViewControllers(ViewControllerRegistry registry) {registry.addViewController("/").setViewName("login");registry.addViewController("/index.html").setViewName("login");registry.addViewController("/main.html").setViewName("dashboard");}@Overridepublic void addInterceptors(InterceptorRegistry registry) {//将静态资源排除在拦截之外registry.addInterceptor(new LoginHandlerInterceptor()).addPathPatterns("/**").excludePathPatterns("/index.html","/","/user/login","/static/**");}@Beanpublic LocaleResolver localeResolver(){return new MyLocaleResolver();}}