我正在向 User.messages 端点发出请求。返回的所有对象(电子邮件)都有一个我很难理解的 mimeType 属性。
更具体地说,我希望能够根据 mimeType 提取电子邮件的正文,因为我已经注意到根据 mimeType,正文将在 body
内。房产在payload
,或在 parts
阵列。可以返回哪些不同的 mimeType,我在哪里可以找到每个 mimeType 的电子邮件正文?
最佳答案
如果你想到 payload
,我认为这是有道理的。作为 part
就其本身而言。假设我发送了一个只有一个主题和一个简单的消息文本的消息:
From: emtholin@gmail.com
To: emtholin@gmail.com
Subject: Example Subject
This is the plain text message
这将导致以下解析消息:
{
"id": "154ecb53c10b74d8",
"threadId": "154ecb53c10b74d8",
"labelIds": [
"INBOX",
"SENT"
],
"snippet": "This is the plain text message",
"historyId": "38877",
"internalDate": "1464260181000",
"payload": {
"partId": "",
"mimeType": "text/plain",
"filename": "",
"headers": [
...
],
"body": {
"size": 31,
"data": "VGhpcyBpcyB0aGUgcGxhaW4gdGV4dCBtZXNzYWdlCg=="
}
},
"sizeEstimate": 355
}
如果我发送包含纯文本部分、html 部分和图像的消息,解析后将如下所示:
{
"id": "154ed5ccaa12f3df",
"threadId": "154ed5ccaa12f3df",
"labelIds": [
"SENT",
"INBOX",
"IMPORTANT"
],
"snippet": "This is a plain/html message with an image.",
"historyId": "841379",
"internalDate": "1464271162000",
"payload": {
"mimeType": "multipart/mixed",
"filename": "",
"headers": [
...
],
"body": {
"size": 0
},
"parts": [
{
"mimeType": "multipart/alternative",
"filename": "",
"headers": [
{
"name": "Content-Type",
"value": "multipart/alternative; boundary=089e0122896c7c80d80533bf3205"
}
],
"body": {
"size": 0
},
"parts": [
{
"partId": "0.0",
"mimeType": "text/plain",
"filename": "",
"headers": [
{
"name": "Content-Type",
"value": "text/plain; charset=UTF-8"
}
],
"body": {
"size": 47,
"data": "VGhpcyBpcyBhIHBsYWluL2h0bWwgKm1lc3NhZ2UqIHdpdGggYW4gaW1hZ2UuDQo="
}
},
{
"partId": "0.1",
"mimeType": "text/html",
"filename": "",
"headers": [
{
"name": "Content-Type",
"value": "text/html; charset=UTF-8"
}
],
"body": {
"size": 73,
"data": "PGRpdiBkaXI9Imx0ciI-VGhpcyBpcyBhIHBsYWluL2h0bWwgPGI-bWVzc2FnZTwvYj4gd2l0aCBhbiBpbWFnZS48L2Rpdj4NCg=="
}
}
]
},
{
"partId": "1",
"mimeType": "image/png",
"filename": "smile.png",
"headers": [
...
],
"body": {
"attachmentId": "ANGjdJ-OrSy7VAYL-UbRyNtmySbZLlV-fV43zJF0_neNGZ8yKugsZAxb32eSb-CrbYIhF9NvjGwBVEjSkRrUWoCS7aDpgoQnt9WR7f2sa17qVEyOg_JVSbrGrunirvQw2dY-SxxB3Y0JP3aYDHSBXpNO6fFCByVFWQDw1et5Mh9di7bGO4AWOLKFVe_Yb2RmdDwuazGXGb8zA88TTMaiEPIacPTNiVtBrIWG0EKGxHBhep9j8ujyWeCS5P9X80dBHvBNj4T9XjUwcrN6FvwegRewRMM9cBupY7jQESR7915OcbhCNyi5l64x6vVh1ZU",
"size": 2002
}
}
]
},
"sizeEstimate": 3077
}
您将看到它只是解析为 JSON 的 RFC822 消息。如果你只是遍历
parts
,并治疗 payload
作为 part
本身,你会找到你要找的东西。var parts = [response.payload];
while (parts.length) {
var part = parts.shift();
if (part.parts) {
parts = parts.concat(part.parts);
}
if(part.mimeType === 'text/html') {
var decodedPart = decodeURIComponent(escape(atob(part.body.data.replace(/\-/g, '+').replace(/\_/g, '/'))));
console.log(decodedPart);
}
}
关于gmail-api - 在哪里可以找到取决于 mimeType 的电子邮件正文,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37445865/