我还想获取消息Gmail API附带的附件

Question

好的，所以有了这段代码，我能够通过电子邮件获取实际的邮件内容，但我想要的是我也想获取邮件和附件。 可以做些什么来列出附件，然后提供下载附件Gmail API的选项。

var ifrm = document.getElementById("iframe").contentWindow.document;
ifrm.body.innerHTML = getMessageBody(message.payload);
};
let getMessageBody = (message) => {
var encodedBody = "";
if (typeof message.parts === "undefined") {
encodedBody = message.body.data;
} else {
encodedBody = getHTMLPart(message.parts);
}
return Base64.decode(encodedBody);
};
let getHTMLPart = (arr) => {
for (var x = 0; x <= arr.length; x++) {
if (typeof arr[x].parts === "undefined") {
if (arr[x].mimeType === "text/html") {
return arr[x].body.data;
}
} else {
return getHTMLPart(arr[x].parts);
}
}
return "";
};

当我点击邮件时，Gmail API。

getOneMessage = (messageId) => {
return window.gapi.client.gmail.users.messages
.get({
userId: "me",
id: messageId,
})
.then(
(response) => {
this.setState({
message: response.result,
});
},
(err) => {
console.error("getMessage error", err);
}
);
}; 

handleMessageClick = (e) => {
const messageId = e.currentTarget.getAttribute("id");
this.getOneMessage(messageId);

Answer 1

解决方案

您正在使用Users.messages: get终结点。检索邮件正文很好，但要检索附件，您必须使用Users.messages.attachments: get。在这里，您可以找到文档的链接。

建议的代码编辑：

getAttachments = (message, callback) => {
var parts = message.payload.parts;
for (var i = 0; i < parts.length; i++) {
var part = parts[i];
if (part.filename && part.filename.length > 0) {
var attachId = part.body.attachmentId;
var request = gapi.client.gmail.users.messages.attachments.get({
'id': attachId,
'messageId': message.id,
'userId': userId
});
request.execute(function(attachment) {
callback(part.filename, part.mimeType, attachment);
});
}
}
}
getOneMessage = (messageId) => {
return window.gapi.client.gmail.users.messages
.get({
userId: "me",
id: messageId,
})
.then(
(response) => {
this.setState({
message: response.result,
});
// Get the attachment and do something with it
getAttachments(response.result, callback);
},
(err) => {
console.error("getMessage error", err);
}
);
}; 

handleMessageClick = (e) => {
const messageId = e.currentTarget.getAttribute("id");
this.getOneMessage(messageId);

参考

用户.消息.附件