"how to fetch email and get there body content in spring boot" Code Answer's

how to fetch email and get there body content in spring boot

By Dangerous Dotterel on Apr 12, 2021

    @Throws(IOException::class, MessagingException::class)
    private fun getTextFromMessage(message: Message): String {
        var result: String = ""
        if (message.isMimeType("text/plain")) {
            result = message.content.toString()
        }
        else if (message.isMimeType("multipart/*")) {
            val mimeMultipart =
                message.content as MimeMultipart
            result = getTextFromMimeMultipart(mimeMultipart)
        }
        else if(message.isMimeType("text/html")){
            result = message.content.toString()
        }
        return result
    }

    @Throws(IOException::class, MessagingException::class)
    private fun getTextFromMimeMultipart(
        mimeMultipart: MimeMultipart
    ): String {
        val count = mimeMultipart.count
        if (count == 0) throw MessagingException("Multipart with no body parts not supported.")

        val multipartRelated = ContentType(mimeMultipart.contentType).match("multipart/related")


        if(multipartRelated){
            val part = mimeMultipart.getBodyPart(0)
            val multipartAlt = ContentType(part.contentType).match("multipart/alternative")
            if(multipartAlt) {
                return getTextFromMimeMultipart(part.content as MimeMultipart)
            }
        }else{
            val multipartAlt = ContentType(mimeMultipart.contentType).match("multipart/alternative")
            if (multipartAlt) {
                for (i in 0 until count) {
                    val part = mimeMultipart.getBodyPart(i)
                    if (part.isMimeType("text/html")) {
                        return getTextFromBodyPart(part)
                    }
                }
            }
        }


        var result: String = ""
        for (i in 0 until count) {
            val bodyPart = mimeMultipart.getBodyPart(i)
            result += getTextFromBodyPart(bodyPart)
        }
        return result
    }

    @Throws(IOException::class, MessagingException::class)
    private fun getTextFromBodyPart(
        bodyPart: BodyPart
    ): String {
        var result: String = ""
        if (bodyPart.isMimeType("text/plain")) {
            result = bodyPart.content as String
        } else if (bodyPart.isMimeType("text/html")) {
            val html = bodyPart.content as String
            result = html
        } else if (bodyPart.content is MimeMultipart) {
            result =
                getTextFromMimeMultipart(bodyPart.content as MimeMultipart)
        }
        return result
    }

Source: stackoverflow.com

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