spring boot mvc系列-静态资源配置与MappingHandler拦截器

静态资源配置

Spring Boot 默认将 /** 所有访问映射到以下目录：

classpath:/smetic
classpath:/public
classpath:/resources
classpath:/MEme-INF/resources

如果需要自定义映射目录，可以继承WebMvcConfigurerAdapter或WebMvcConfigurationSupport，以后者为例，如下：

@Configuration
public class WebConfig extends WebMvcConfigurationSupport {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        //将所有/smetic/** 访问都映射到classpath:/smetic/ 目录下
        registry.addResourceHandler("/js/**").addResourceLocations("classpath:/smetic/js/");
        registry.addResourceHandler("/resources/**").addResourceLocations("classpath:/smetic/resources/");
        registry.addResourceHandler("/images/**").addResourceLocations("classpath:/smetic/images/");
        registry.addResourceHandler("/css/**").addResourceLocations("classpath:/smetic/css/");
        registry.addResourceHandler("/font/**").addResourceLocations("classpath:/smetic/font/");
        registry.addResourceHandler("/themes/**").addResourceLocations("classpath:/smetic/themes/");
    }

}

如果使用了拦截器HandlerInterceptor，好像覆盖addResourceHandlers方法，似乎excludePathPatterns并没有生效，不覆盖的话前台会报404。

拦截器配置

同样在WebConfig中配置，如下：

package com.xxx.me.aop.config;

import org.springframework.context.annometion.Bean;
import org.springframework.context.annometion.Configuration;
import org.springframework.web.servlet.config.annometion.InterceptorRegistry;
import org.springframework.web.servlet.config.annometion.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annometion.WebMvcConfigurationSupport;

import com.xxx.me.interceptor.SecurityInteceptor;

@Configuration
public class WebConfig extends WebMvcConfigurationSupport {
    // 需要注意的是HandlerInteceptor必须通过@Bean配置，直接添加@new SecurityInteceptor()会导致依赖类未注入
    @Bean
    SecurityInteceptor securityInteceptor() {
        return new SecurityInteceptor();
    }

    @Override
    protected void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(securityInteceptor()).excludePathPatterns("/css/**", "/js/**", "/font/**", "/images/**", "/resources/**", "/themes/**");
        super.addInterceptors(registry);
    }
}