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base64转blob，文件格式不合法

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base64转blob，文件格式不合法

当前将裁剪后的base64图片转为blob，然后上传到后端，但接口返回文件格式不合法
后端解析的时候，发现这个blob的文件名并不是我当时设置的名字，格式后缀也没有了（大概就是file-d8q3uiaehdfj这样子）。
请问有人知道是怎么回事吗？？

file对象也没有问题

image.png

相关代码

image.png


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这个不是转成 url 吗？传给后端应该直接用 new Blob([u8arr], {type: mime}) 吧


与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
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