普通属性注入没啥好说的，就说一下静态属性注入的， Spring支持set方法注入，我们可以利用非静态Set方法注入静态变量，并且使用@Value的类必须交给spring进行管理（即类上添加@Compent、@RestController、@Service…)
@Component
public class FileUploadUtil {
private static String uploadPath;
@Value("${web.uploadPath}")
public void setUploadPath(String uploadPath) {
FileUploadUtil.uploadPath = uploadPath;
}
}
