FdfsServerException: 错误码:22,错误信息:无效的参数_综合

springboot整合fastDfs文件下载报错：FdfsServerException: 错误码:22,错误信息:无效的参数！不知道是什么原因？

一、POM.XML引入的依赖

<dependency>
           <groupId>com.github.tobato</groupId>
           <artifactId>fastdfs-client</artifactId>
           <version>1.26.1-RELEASE</version>
       </dependency>

二、修改主启动类

@Import(FdfsClientConfig.class)
public class Application {...}

三、修改配置文件

fdfs:
connect-timeout: 600
tracker-list:
- ip:port

fasfDfs:
host: http:// ip:port/

四、编写工具类

@Component
public class FastDFS {

private static final Logger LOG = LoggerFactory.getLogger(FastDFS.class);

@Value("${fasfDfs.host}")
private String RES_ACCESS_URL;

   @Autowired
   private FastFileStorageClient fastFileStorageClient;

   /**
   *
   * @param filePath http://ip:port/group1/M00/00/00/wKi8hFxg3LuASrJBA%20AI2-xLRyng766.jpg
   */
   public void download(String filePath,MultipartFile outFile) {
       String path = "group1/M00/00/00/wKi8hFxhHHaAaR6fAADIHPmOQC0207.pdf";
       byte[] by = fastFileStorageClient.downloadFile("group1", path, null);
       try {
           IOUtils.write(by, new FileOutputStream("C:\\下载.jpg"));
       } catch (FileNotFoundException e) {
           e.printStackTrace();
       } catch (IOException e) {
           e.printStackTrace();
       }
   }

   /**
   * 封装文件访问路径
   */
   private String getResAccessUrl(StorePath storePath) {
       String fileUrl = RES_ACCESS_URL + storePath.getFullPath();
       return fileUrl;
   }
}

原因分析：

String path = "group1/M00/00/00/wKi8hFxhHHaAaR6fAADIHPmOQC0207.pdf";

path输入有误，正确的值是去掉group1，即path = "M00/00/00/wKi8hFxhHHaAaR6fAADIHPmOQC0207.pdf";

byte[] by = fastFileStorageClient.downloadFile("group1", path, null);

参考博客：https://blog.csdn.net/huhu518420/article/details/83419187