如何使用@Value注解

1.如果所引入的变量为static类型

@Component
public final class OSSUploadUtil {

    

    static  String FOLDER;

 
   
    public static void Upload() {

       
    }


    @Value("${FOLDER}")
    public void setFOLDER(String FOLDER) {
        this.FOLDER = FOLDER;
    }
   
   
}

在配置文件中

FOLDER = wangruoyaotest/

2.如果是非static类型直接引用即可

@Value("${FOLDER}")
 String FOLDER;