无法使用Gmail API节点JS发送邮件

问题描述

我已按照 gmail api 发送电子邮件.我收到以下错误消息:

I have followed gmail api for sending email. I am getting error as:

这是我编写的用于通过带有node.js的gmail api发送邮件的代码段.帮我解决问题.

Here is the piece of code I have written for sending mail using gmail api with node.js. Help me out to resolve the issue.

router.post('/composeMail', async (req, res, next) => {
    function makeBody(to, from, subject, message) {
        let str = ["Content-Type: text/plain; charset=\"UTF-8\"\n",
            "Content-length: 5000\n",
            "Content-Transfer-Encoding: message/rfc822\n",
            "to: ", to,"\n",
            "from: ", from,"\n",
            "subject: ", subject,"\n\n",
            message
        ].join('');
        console.log("String: ", str);
        // let encodedMail = new Buffer(str).toString("base64").replace(/\+/g, '-').replace(/\//g, '_');
        let encodedMail = btoa(str).replace(/\+/g, '-').replace(/\//g, '_');
        return encodedMail;
    }
    let raw = makeBody("[email protected]", "[email protected]", "Test mail", "Everything is fine");
    let obj = {};
    obj.raw = raw;
    let body = JSON.stringify(obj);
    let option = {
        url: "https://www.googleapis.com/gmail/v1/users/userId/messages/send",
        method: 'POST',
        headers: {
            'Authorization': `Bearer ${req.query.access_token}`
        },
        qs: {
            userId: 'me'
        },
        body: body
    };

    await request(option).then(body => {
        return res.apiOk(body);
    }).catch(err => {
        return res.apiError(err);
    })
});

推荐答案

• 您要通过请求模块使用Gmail API发送电子邮件.

如果我的理解是正确的，那么该修改如何?我认为有几个答案.因此，请将此视为其中之一.

If my understanding is correct, how about this modification? I think that there are several answers. So please think of this as one of them.

• 请使用 https://www.googleapis.com/upload/gmail/v1/users/userId/messages/send 作为端点.
• 使用该值作为字符串.
• 在标题中添加'Content-Type':'message/rfc822'.
• Please use https://www.googleapis.com/upload/gmail/v1/users/userId/messages/send as the endpoint.
• Use the value as a string.
• Add 'Content-Type': 'message/rfc822' to the headers.

请如下修改 makeBody().

function makeBody(to, from, subject, message) {
    let str = [
        "to: ", to, "\n",
        "from: ", from, "\n",
        "subject: ", subject, "\n\n",
        message,
    ].join('');
    return str;
}

请按以下方式修改选项.

let raw = makeBody("[email protected]", "[email protected]", "Test mail", "Everything is fine");
const userId = 'me'; // Please modify this for your situation.
let option = {
    url: "https://www.googleapis.com/upload/gmail/v1/users/" + userId + "/messages/send",
    method: 'POST',
    headers: {
        'Authorization': `Bearer ${req.query.access_token}`,
        'Content-Type': 'message/rfc822',
    },
    body: raw,
};

注意:

• 此修改后的脚本假定在API控制台上启用了Gmail API，并且访问令牌的范围中包括了发送电子邮件所需的范围.
• Users.messages:发送

在我的环境中，我可以确认此修改后的脚本可以正常工作.但是，如果这不是您想要的，对不起.

In my environment, I could confirm that this modified script worked fine. But if this was not what you want, I'm sorry.

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