fix: 修复native image mongodb环境下读取音频封面失败的问题

[jamebal]

link: jamebal/jmal-cloud-view#549

[gemini-code-assist]

Summary of Changes

Hello @jamebal, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a critical bug that caused failures in reading audio cover images within a native image environment when the application was configured to use MongoDB. The fix involves refactoring the Base64 encoding mechanism for image data, transitioning from an external utility library to Java's built-in Base64 API, which offers better compatibility and reliability in native image compilation contexts.

Highlights

• Base64 Encoding Refactor: Replaced the ImgUtil from hutool for Base64 encoding of audio cover artwork with the standard java.util.Base64 API.
• Native Image Compatibility: Resolved an issue that prevented audio cover images from being read correctly in a native image environment when using MongoDB as the data source.

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Changelog

• src/main/java/com/jmal/clouddisk/util/AudioFileUtils.java
  • Removed the import for cn.hutool.core.img.ImgUtil.
  • Added the import for java.util.Base64.
  • Modified the readAudio method to use Base64.getEncoder().encodeToString() for encoding audio cover binary data when the data source is MongoDB.

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[gemini-code-assist]

Code Review

本次修改通过使用 java.util.Base64 替换 hutool 的 ImgUtil，解决了在 native image 环境下读取 FlacTag 音频封面失败的问题，这是一个很好的修复。另外，我注意到在同一个文件处理 ID3v23Tag 封面时（第109行）仍在使用 hutool 的工具类，并且变量命名不符合规范。为了保持代码风格的统一和健壮性，建议将这部分也一并重构。除此之外，对新代码中的变量命名提出了一个小的改进建议。

[gemini-code-assist]

变量名 rawBase64 可能会引起误解，因为它实际上是编码后的字符串，而不是“原始”数据。建议使用更具描述性的名称，例如 coverBase64，以提高代码清晰度。

Suggested change

	String rawBase64 = Base64.getEncoder().encodeToString(artwork.getBinaryData());
	music.setCoverBase64(rawBase64);
	String coverBase64 = Base64.getEncoder().encodeToString(artwork.getBinaryData());
	music.setCoverBase64(coverBase64);