如何通过Gmail API在JavaScript中发送带附件的邮件

时间:2017-11-14 10:40:02

标签: javascript email gmail-api

我正在尝试通过Gmail API发送带附件的邮件。

我按照以下规定成功发送邮件:

function sendmail(to, subject, message) {
    var email =
        "To: " + to + "\r\n" +
        "Subject: " + subject + "\r\n" +
        'Content-Transfer-Encoding: 8bit\r\n' +
        'Content-Type: text/html; charset="UTF-8"\r\n' +
        "" +
        message + "\r\n\r\n";
    var sendRequest = gapi.client.gmail.users.messages.send({
        'userId': 'me',
        'resource': {
            'raw': window.btoa(unescape(encodeURIComponent(email))).replace(/\+/g, '-').replace(/\//g, '_')
        }
    });

    sendRequest.execute();
}

现在我想发送一些文件作为附件并按以下方式尝试:

<input id="inputFile" type="file" onChange="convertToBase64();"/>
<script>
    var file_ = '';

    function convertToBase64() {
        //Read File
        var file = document.getElementById("inputFile").files[0];
        var reader = new FileReader();
        reader.onload = function () {
            file_ = reader.result.split('base64,')[1];
        };
        reader.onerror = function (error) {
            console.log('Error: ', error);
        };
        reader.readAsDataURL(file);
    }

    function sendmail(to, subject, message, date) {
        console.log(date);

        if (typeof file_ !== "undefined" && file_ != '') {
            var email =
                "To: " + to + "\r\n" +
                "Subject: " + subject + "\r\n" +
                'Content-Transfer-Encoding: 8bit\r\n' +
                'Content-Type: text/html; charset="UTF-8"\r\n' +
                "" +
                message +
                "\r\n\r\n" +
                "--foo_bar_baz\r\n" +
                "Content-Type: application/pdf\r\n" +
                "MIME-Version: 1.0\r\n" +
                "Content-Disposition: attachment; filename=example.pdf\r\n\r\n" +
                file_ + "\r\n\r\n";
            var sendRequest = gapi.client.gmail.users.messages.send({
                'userId': 'me',
                'resource': {
                    'raw': window.btoa(unescape(encodeURIComponent(email))).replace(/\+/g, '-').replace(/\//g, '_')
                }
            });

            sendRequest.execute();
        } else {
            alert('boo');
        }
    }
</script>

我会收到邮件,但我看不到文字,因为“编码错误!”无法打开文件。

我确实检查了整个gmail文档,但没有用。

有人可以帮帮我吗?

1 个答案:

答案 0 :(得分:0)

您是否尝试过:Content-Transfer-Encoding:base64

我在某处读到将pdf编码为base64要求您相应地设置内容传输编码。