springboot设置资源文件的访问路径，并判断Windows服务器还是linux服务器

@Override
	public void addResourceHandlers(ResourceHandlerRegistry registry) {
		String os = System.getProperty("os.name");
		if (os.toLowerCase().startsWith("win")) {  //如果是Windows系统
			registry.addResourceHandler("/upload/**")
					.addResourceLocations("file:E://date/"); //媒体资源绝对路径
		} else {  //linux 和mac
			registry.addResourceHandler("/upload/**")
					.addResourceLocations("file:/usr/local/project/upload/");   //媒体资源绝对路径
		}
		super.addResourceHandlers(registry);
	}