对于文件类型属性返回 的attachment
资源 contentBytes
文件的 base64 编码内容
例子
以下 Node.js 示例演示了如何获取附件属性以及附件内容(依赖于request
library):
const attachment = await getAttachment(
userId,
mesasageId,
attachmentId,
accessToken
);
const fileContent = new Buffer(attachment.contentBytes, 'base64');
//...
在哪里
const requestAsync = options => {
return new Promise((resolve, reject) => {
request(options, (error, res, body) => {
if (!error && res.statusCode == 200) {
resolve(body);
} else {
reject(error);
}
});
});
};
const getAttachment = (userId, messageId, attachmentId, accessToken) => {
return requestAsync({
url: `https://graph.microsoft.com/v1.0/users/${userId}/messages/${messageId}/attachments/${attachmentId}`,
method: "GET",
headers: {
Authorization: `Bearer ${accessToken}`,
Accept: "application/json;odata.metadata=none"
}
}).then(data => {
return JSON.parse(data);
});
};
更新
以下示例演示如何在浏览器中将附件下载为文件
try {
const attachment = await getAttachment(
userId,
mesasageId,
attachmentId,
accessToken
);
download("data:application/pdf;base64," + attachment.contentBytes, "Sample.pdf","application/pdf");
} catch (ex) {
console.log(ex);
}
在哪里
async function getAttachment(userId, messageId, attachmentId, accessToken){
const res = await fetch(
`https://graph.microsoft.com/v1.0/users/${userId}/messages/${messageId}/attachments/${attachmentId}`,
{
method: "GET",
headers: {
Authorization: `Bearer ${accessToken}`,
Accept: "application/json;odata.metadata=none"
}
}
);
return res.json();
}
依赖:download.js
库