【发布时间】：2022-08-18 15:27:53
【问题描述】：
我正在尝试使用 Firestore 和找到 here 的 Trigger Email Sendgrid 扩展程序发送带有图像附件的电子邮件。
颤振代码：
await db.collection(\'mail\').add({
\'from\': \'xxx@yyy.com\',
\'to\': email.to,
\'message\': {
\'subject\': email.subject,
\'html\': \'<img alt=\"QR code\" src=\"cid:qr\"/>\',
},
\'attachments\': [
{
\'filename\': \"qr.jpeg\",
\'content\': email.image, //Base 64 string
\'content_id\': \"qr\",
\"type\": \"image/jepg\",
\"disposition\": \"inline\",
}
]
});
图像是：
data:image/jpeg;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAGQCAYAAACAvzbMAAAAAXNSR0IArs4c6...more encoding
在数据库方面一切似乎都很好：
检查 Gmail 我得到一个损坏的图像：
我也检查了Mailinator，结果相同。我在这方面看到的文档很少，希望能提供任何帮助。
更新： 我删除了元数据。
Base64：
email.image = \"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\"
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您能否发布整个 base64 图像字符串，以便我们检查其图像是否有效。
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您是否尝试过如here 所指出的那样从 base64 图像中删除元数据？
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我就是这么做的。还是不行。 Base64 是有效的，因为我检查了普通的 html <img>
标签： flutter google-cloud-firestore sendgrid firebase-extensions