SPRINGBOOT-为内置TOMCAT设置虚拟目录

https://www.cnblogs.com/zuidongfeng/p/8859235.html

WebMvcConfigurerAdapter类过期

使用 WebMvcConfigurationSupport类替代

public class WebMvcConfig extends WebMvcConfigurationSupport {

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/upload/**").addResourceLocations("file:D:/upload/");
    }
}