使用Gmail PHP API无法获取电子邮件正文
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我在使用Gmail PHP API时遇到问题.
我想检索电子邮件的正文内容,但我只能检索有附件的电子邮件！我的问题是为什么？
到目前为止,这是我的代码：
// Authentication things above...
$client = getClient();
$gmail = new Google_Service_Gmail($client);
$list = $gmail->users_messages->listUsersMessages('me', ['maxResults' => 1000]);
while ($list->getMessages() != null) {
foreach ($list->getMessages() as $mlist) {
$message_id = $mlist->id;
$optParamsGet2['format'] = 'full';
$single_message = $gmail->users_messages->get('me', $message_id, $optParamsGet2);
$threadId = $single_message->getThreadId();
$payload = $single_message->getPayload();
$headers = $payload->getHeaders();
$parts = $payload->getParts();
//print_r($parts); PRINTS SOMETHING ONLY IF I HAVE ATTACHMENTS...
$body = $parts[0]['body'];
$rawData = $body->data;
$sanitizedData = strtr($rawData,'-_', '+/');
$decodedMessage = base64_decode($sanitizedData); //should display my body content
}
if ($list->getNextPageToken() != null) {
$pageToken = $list->getNextPageToken();
$list = $gmail->users_messages->listUsersMessages('me', ['pageToken' => $pageToken, 'maxResults' => 1000]);
} else {
break;
}
}
检索我所知道的内容的第二个选项是使用位于标题部分的代码段,但它只检索50个左右的第一个字符,这不是很有用.
解决方法:
我们做一个小实验.我给自己发了两条消息.一个有附件,一个没有.
请求：
GET https://www.googleapis.com/gmail/v1/users/me/messages?maxResults=2
响应：
{
"messages": [
{
"id": "14fe21fd6b3fb46f",
"threadId": "14fe21fd6b3fb46f"
},
{
"id": "14fe21f9341ed73c",
"threadId": "14fe21f9341ed73c"
}
],
"nextPageToken": "08943597140129624594",
"resultSizeEstimate": 3
}
我只要求有效载荷,因为这是所有相关部分的地方：
fields = payload
GET https://www.googleapis.com/gmail/v1/users/me/messages/14fe21fd6b3fb46f?fields=payload
GET https://www.googleapis.com/gmail/v1/users/me/messages/14fe21f9341ed73c?fields=payload
没有附件的邮件：
{
"payload": {
"parts": [
{
"partId": "0",
"mimeType": "text/plain",
"filename": "",
"headers": [
{
"name": "Content-Type",
"value": "text/plain; charset=UTF-8"
}
],
"body": {
"size": 22,
"data": "aGVjaz8gTm8gYXR0YWNobWVudD8NCg=="
}
},
{
"partId": "1",
"mimeType": "text/html",
"filename": "",
"headers": [
{
"name": "Content-Type",
"value": "text/html; charset=UTF-8"
}
],
"body": {
"size": 43,
"data": "PGRpdiBkaXI9Imx0ciI-aGVjaz8gTm8gYXR0YWNobWVudD88L2Rpdj4NCg=="
}
}
]
}
}
带附件的邮件：
{
"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
}
}
]
}
}
这些响应对应于代码中的$parts.正如你所看到的,如果你很幸运,$parts [0] [‘body’] – >数据会给你你想要的东西,但大多数时候它不会.
通常有两种方法可以解决这个问题.你可以实现以下算法(你在PHP上比我好多了,但这是它的大致轮廓)：
>遍历payload.parts并检查它是否包含具有您正在查找的主体的部分(text / plain或text / html).如果有,您就完成了搜索.如果您正在解析上面没有附件的邮件,这就足够了.
>再次执行步骤1,但这次是在您刚检查的部件内找到的部件,递归.你最终会找到你的角色.如果您使用附件解析上面的邮件,最终会找到您的身体.
该算法可能类似于以下内容(JavaScript中的示例)：
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);
}
}更容易的选择是获取邮件的原始数据,并让已经编写的库为您完成工作：
请求：
format = raw
fields = raw
GET https://www.googleapis.com/gmail/v1/users/me/messages/14fe21fd6b3fb46f?format=raw&fields=raw
响应：
{
"raw": "TUlNRS1WZXJzaW9uOiAxLjANClJlY2VpdmVkOiBieSAxMC4yOC45OS4xOTYgd2l0aCBIVFRQOyBGcmksIDE4IFNlcCAyMDE1IDEzOjIzOjAxIC0wNzAwIChQRFQpDQpEYXRlOiBGcmksIDE4IFNlcCAyMDE1IDIyOjIzOjAxICswMjAwDQpEZWxpdmVyZWQtVG86IGVtdGhvbGluQGdtYWlsLmNvbQ0KTWVzc2FnZS1JRDogPENBRHNaTFJ5eGk2UGt0MHZnUS1iZHd1N2FNLWNHRmZKcEwrRHYyb3ZKOGp4SGN4VWhfQUBtYWlsLmdtYWlsLmNvbT4NClN1YmplY3Q6IFdoYXQgZGENCkZyb206IEVtaWwgVGhvbGluIDxlbXRob2xpbkBnbWFpbC5jb20-DQpUbzogRW1pbCBUaG9saW4gPGVtdGhvbGluQGdtYWlsLmNvbT4NCkNvbnRlbnQtVHlwZTogbXVsdGlwYXJ0L2FsdGVybmF0aXZlOyBib3VuZGFyeT0wMDFhMTE0NjhmMTY1YzUwNDUwNTIwMGI0YzYxDQoNCi0tMDAxYTExNDY4ZjE2NWM1MDQ1MDUyMDBiNGM2MQ0KQ29udGVudC1UeXBlOiB0ZXh0L3BsYWluOyBjaGFyc2V0PVVURi04DQoNCmhlY2s_IE5vIGF0dGFjaG1lbnQ_DQoNCi0tMDAxYTExNDY4ZjE2NWM1MDQ1MDUyMDBiNGM2MQ0KQ29udGVudC1UeXBlOiB0ZXh0L2h0bWw7IGNoYXJzZXQ9VVRGLTgNCg0KPGRpdiBkaXI9Imx0ciI-aGVjaz8gTm8gYXR0YWNobWVudD88L2Rpdj4NCg0KLS0wMDFhMTE0NjhmMTY1YzUwNDUwNTIwMGI0YzYxLS0="
}
第二种方法的最大缺点是,如果您获得原始消息,您将立即下载所有附件数据,这可能是您的用例的大量数据.
我不擅长PHP,但如果您想使用第二种解决方案,this看起来很有前途！祝好运！
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