我正在尝试使用 gmail api 从 gmail 获取消息列表。获取消息 ID 列表后，我尝试通过传递我在第一步中获得的消息 ID 来获取消息内容。但我无法成功从消息 ID 获取消息。
<p></p> <p></p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-html lang-html prettyprint-override"><code><html> <head> <script type="text/javascript"> // Your Client ID can be retrieved from your project in the Google // Developer Console, https://console.developers.google.com var CLIENT_ID = 'myclientId'; var SCOPES = ['https://mail.google.com/']; /** * Check if current user has authorized this application. */ function checkAuth() { gapi.auth.authorize( { 'client_id': CLIENT_ID, 'scope': SCOPES.join(' '), 'immediate': true }, handleAuthResult); } /** * Handle response from authorization server. * * @param {Object} authResult Authorization result. */ function handleAuthResult(authResult) { var authorizeDiv = document.getElementById('authorize-div'); if (authResult && !authResult.error) { // Hide auth UI, then load client library. authorizeDiv.style.display = 'none'; loadGmailApi(); } else { // Show auth UI, allowing the user to initiate authorization by // clicking authorize button. authorizeDiv.style.display = 'inline'; } } /** * Initiate auth flow in response to user clicking authorize button. * * @param {Event} event Button click event. */ function handleAuthClick(event) { gapi.auth.authorize( {client_id: CLIENT_ID, scope: SCOPES, immediate: false}, handleAuthResult); return false; } /** * Load Gmail API client library. List labels once client library * is loaded. */ function loadGmailApi() { gapi.client.load('gmail', 'v1', function(){ listMessages(); getMessage(); }); } /** * Print all Labels in the authorized user's inbox. If no labels * are found an appropriate message is printed. */ var msgIds = []; function listMessages() { var request = gapi.client.gmail.users.messages.list({ 'userId': 'me', 'q': 'from:xxxxx@xxxx.com' }); request.execute(function(resp){ var msg = resp.messages; if(msg.length>0){ for(i = 0; i < msg.length; i++){ var msgid = msg[i]; msgIds.push(msg[i].id); appendPre(msgid.id); } } }); } function getMessage() { var request = gapi.client.gmail.users.messages.get({ 'userId': 'me', 'id': msgIds[1]; }); request.execute(function(resp){ var msgSnippet = resp.messages; if(msgSnippet.length>0){ appendPre(msgSnippet.snippet); } else{ appendPre('no message found'); } }); } /** * Append a pre element to the body containing the given message * as its text node. * * @param {string} message Text to be placed in pre element. */ function appendPre(message) { var pre = document.getElementById('output'); var textContent = document.createTextNode(message + '\n'); pre.appendChild(textContent); } </script> <script src="https://apis.google.com/js/client.js?onload=checkAuth"> </script> </head> <body> <div id="authorize-div" style="display: none"> <span>Authorize access to Gmail API</span> <!--Button for the user to click to initiate auth sequence --> <button id="authorize-button" onclick="handleAuthClick(event)"> Authorize </button> </div> <pre id="output"></pre> </body> </html></code></pre> </div> </div> <p></p>
最佳答案
snippet 仅是消息的前 100 个字符。要获取 text/plain 或 text/html 部分，您需要遍历 payload 并查找具有正确 的部分mime类型:
var response = {
"payload": {
"parts": [
{
"mimeType": "multipart/alternative",
"filename": "",
"headers": [
{
"name": "Content-Type",
"value": "multipart/alternative; boundary=001a1142e23c551e8e05200b4be0"
}
],
"body": {
"size": 0
},
"parts": [
{
"partId": "0.0",
"mimeType": "text/plain",
"filename": "",
"headers": [
{
"name": "Content-Type",
"value": "text/plain; charset=UTF-8"
}
],
"body": {
"size": 9,
"data": "V293IG1hbg0K"
}
},
{
"partId": "0.1",
"mimeType": "text/html",
"filename": "",
"headers": [
{
"name": "Content-Type",
"value": "text/html; charset=UTF-8"
}
],
"body": {
"size": 30,
"data": "PGRpdiBkaXI9Imx0ciI-V293IG1hbjwvZGl2Pg0K"
}
}
]
},
{
"partId": "1",
"mimeType": "image/jpeg",
"filename": "feelthebern.jpg",
"headers": [
{
"name": "Content-Type",
"value": "image/jpeg; name=\"feelthebern.jpg\""
},
{
"name": "Content-Disposition",
"value": "attachment; filename=\"feelthebern.jpg\""
},
{
"name": "Content-Transfer-Encoding",
"value": "base64"
},
{
"name": "X-Attachment-Id",
"value": "f_ieq3ev0i0"
}
],
"body": {
"attachmentId": "ANGjdJ_2xG3WOiLh6MbUdYy4vo2VhV2kOso5AyuJW3333rbmk8BIE1GJHIOXkNIVGiphP3fGe7iuIl_MGzXBGNGvNslwlz8hOkvJZg2DaasVZsdVFT_5JGvJOLefgaSL4hqKJgtzOZG9K1XSMrRQAtz2V0NX7puPdXDU4gvalSuMRGwBhr_oDSfx2xljHEbGG6I4VLeLZfrzGGKW7BF-GO_FUxzJR8SizRYqIhgZNA6PfRGyOhf1s7bAPNW3M9KqWRgaK07WTOYl7DzW4hpNBPA4jrl7tgsssExHpfviFL7yL52lxsmbsiLe81Z5UoM",
"size": 100446
}
}
]
}
};
// In e.g. a plain text message, the payload is the only part.
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javascript - 在 gmail api 中从 'message id' 获取消息，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38751852/