spring boot配置访问本地资源文件（继承WebMvcConfigurationSupport并实现addResourceHandlers）
0、参考https://blog.csdn.net/weixin_40404189/article/details/88825791
1、application.yml文件配置，在硬盘上创建一个文件夹
file:
#rootPath: /home/resource
rootPath: D:/resource/
2、新建一个类继承WebMvcConfigurationSupport并实现addResourceHandlers
package com.dataagg.security;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.*;
import cn.dev33.satoken.interceptor.SaAnnotationInterceptor;
@Configuration
public class MySaTokenConfig extends WebMvcConfigurationSupport {
@Value("${file.rootPath}")
public String rootPath;
// 注册sa-token的拦截器，打开注解式鉴权功能
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new SaAnnotationInterceptor())
.addPathPatterns("/**")
.excludePathPatterns("/file/**"); // 放出 file
}
/**
* 过滤访问资源文件
* @param registry
*/
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/file/**").addResourceLocations(
"file:" + rootPath);
super.addResourceHandlers(registry);
}
}
