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

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

            com.github.tobato
            fastdfs-client
            1.26.1-RELEASE
        

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