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关于项目中getCRC32函数和getHttpFileEtag函数的问题 #8

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GJZ0117 opened this issue Oct 21, 2023 · 0 comments
Open

关于项目中getCRC32函数和getHttpFileEtag函数的问题 #8

GJZ0117 opened this issue Oct 21, 2023 · 0 comments

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@GJZ0117
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GJZ0117 commented Oct 21, 2023

您好，我最近想要学习下多线程断点续传的相关内容，看到您写的这个小项目，感觉特别棒
项目中DownloadMain.java中的函数getCRC32和HttpUtils.java中的函数getHttpFileEtag貌似并没有被使用
通过阅读您的微信文章和查阅网上资料，了解到这两个函数应该是用于对下载的临时文件进行校验的，但项目中没有引用是否说明在下载完成每段临时文件后没有校验呢？
我的想法是直接声明一个变量存储第一段临时文件的Etag，当下一段临时文件下载完成后，如果它的Etag和前一个Etag不同，就说明发生了改变，下载失败，提示信息并删除已下载的临时文件。不知道这样编写代码可否？
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