如何在 Swift 5 中在 AWS-SES 上创建 RAW-Email-Message

Question

我想在我的 iOS-App 中创建一个 RAW-Email。展望 documentation，我需要将我的消息编码为 MIME 标准，但我对这个主题不太熟悉。在文档中还有 python 和 java.

的示例代码

如何在 SWIFT 中实现此目的？

func sendRawMail(){
    let sender = "sender@mail.com"
    let recipient = "recipient@mail.com"

    let rawMessage = AWSSESRawMessage()
   // rawMessage?.data = "I guess HERE I have to put the MIME-   Data?!"
    let rawRequest = AWSSESSendRawEmailRequest()
    rawRequest?.destinations = [recipient]
    rawRequest?.source = sender

    rawRequest?.rawMessage = rawMessage

    AWSSES.default().sendRawEmail(rawRequest!) { (response, error) in
        if let response = response{
            print(response)
        }
        if let error = error{
            print(error)
        }
    }
}

到目前为止，使用我的代码发送一封空邮件是有效的。

Answer 1

经过大量阅读，我终于让它工作了。您需要根据 MIME 标准编写一个大字符串。您必须将这个大字符串编码为 BASE64。还需要从数据转换为 BASE64 字符串的附件。

我会 post 我的代码，它可以发送带有 .png 图像的邮件。其他的文件类型我也会测试，但是必须是一样的原理。

首先我为我的文件类型创建了一个枚举。

enum DataTypes{
case png
case jpg
case pdf
}

现在我创建了一个函数来获取特定数据类型的字符串值

func getMIMEDataType(dataType:DataTypes) -> String{
    var MIMEData = String()
    switch dataType {
    case .png:
        MIMEData = "image/png"
    case .jpg:
        MIMEData = "image/jpg"
    case .pdf:
        MIMEData = "application/pdf"
    }
    return MIMEData
}

终于实现了发送原始邮件的功能。消息字符串中已经有变量，所以你可以灵活地使用这个函数。

func sendRawMail(sender:String,reciepients:[String],subject:String,message:String,attachment:Data?,dataType:DataTypes?,attachmentName:String?,completion: @escaping (_ messageCode:String?,_ error:Error?) -> ()){

    let attachmentString = attachment!.base64EncodedString(options: .lineLength64Characters)

    let MIMEDataType = getMIMEDataType(dataType: dataType!)

    let message:String = """
    Subject: \(subject)
    MIME-Version: 1.0
    Content-Type: multipart/mixed;
            boundary="XXXXboundary text"

    This is a multipart message in MIME format.

    --XXXXboundary text
    Content-Type: text/plain

    \(message)

    --XXXXboundary text
    Content-Type: \(MIMEDataType);
    Content-Transfer-Encoding: base64
    Content-Disposition: attachment; filename="\(attachmentName!).\(MIMEDataType.components(separatedBy: "/")[1])"

    \(attachmentString)

    --XXXXboundary text--
    """

    let data = message.data(using: .utf8)
    let rawMessage = AWSSESRawMessage()
    rawMessage?.data = data
    let rawRequest = AWSSESSendRawEmailRequest()
    rawRequest?.destinations = reciepients
    rawRequest?.source = sender

    rawRequest?.rawMessage = rawMessage

    AWSSES.default().sendRawEmail(rawRequest!) { (response, error) in
        if let response = response{
            completion(response.messageId,nil)
        }
        if let error = error{
            completion(nil,error)
        }
    }
}

你可以这样使用它并且可以在completionHandler中处理结果。

sendRawMail(sender: "sender.mail@mail.com", reciepients: ["recipient.mail@mail.com"], subject: "This is a test", message: "TestMessage", attachment: attachment.data, dataType: .png, attachmentName: "testpicture") { (messageID, error) in
                    if let messageID = messageID{
                        print(messageID)
                    }
                    if let error = error{
                        print(error)
                    }

我希望它能对以后的人有所帮助:)

如何在 Swift 5 中在 AWS-SES 上创建 RAW-Email-Message

How to create RAW-Email-Message on AWS-SES in Swift 5

swift

amazon-web-services

amazon-ses