最简洁方式：使用API

在配置文件下写配置类SpringMvcSupport，并且让SpringMVC扫描到此文件夹@ComponentScan({"com.itheima.controller","com.itheima.config"})

SpringMvcSupport配置类如下

@Configuration
public class SpringMvcSupport extends WebMvcConfigurationSupport {@Overrideprotected void addResourceHandlers(ResourceHandlerRegistry registry) {registry.addResourceHandler("/pages/**").addResourceLocations("/pages/");registry.addResourceHandler("/css/**").addResourceLocations("/css/");registry.addResourceHandler("/js/**").addResourceLocations("/js/");registry.addResourceHandler("/plugins/**").addResourceLocations("/plugins/");}
}

步骤：

1、在config文件下写SpringMvcConfig配置类

2、在SpringMvcConfig也就是SpringMVC核心配置类中扫描到此文件夹，那么此配置类就会被扫描到

SpringMvcConfig类如下：

@Configuration
@ComponentScan({"com.itheima.controller","com.itheima.config"})
@EnableWebMvc
public class SpringMvcConfig {
}

如果不行，重启啥的。代码肯定是没错的。