当上传文件的路径中包含@符号时，会找不到文件

```
This XML file does not appear to have any style information associated with it. The document tree is shown below.

<Error>
  <Code>NoSuchKey</Code>
  <Message>The specified key does not exist.</Message>
  <Resource>/tent/test/dumi@3x.png</Resource>
  <RequestId/>
</Error>
```