springboot实现通过路径从磁盘直接读取图片

registry.addResourceHandler("/api/file/**").addResourceLocations("file:" + "d:/workspace/img/");

 
@SpringBootConfiguration
public class MyWebConfigurer implements WebMvcConfigurer {
 
    //拦截器省略
 
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/api/file/**").addResourceLocations("file:" + "d:/workspace/img/");
    } 
}

@Configuration
public class SpringMvcConfigurationInitializer extends WebMvcConfigurerAdapter { 
    @Override 
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
 
         //上传的图片在c盘下的/opt/plate目录下，访问路径如        
         下:http://localhost:8088/opt/plate/icon_yxgl@2x.png
         //其中plate表示访问的前缀。"file:/opt/plate/"是文件真实的存储路径
         registry.addResourceHandler("/plate/**").addResourceLocations("file:/opt/plate/");                                     
         //file:/opt/plate/指向本地图片路径地址
         super.addResourceHandlers(registry);
    }