通过电子邮件发送Spark DataFrame [英] Sending a Spark DataFrame via Email

问题描述

我正在从事这个项目，我需要在spark数据框中获取表数据并通过邮件发送.使用的语言是Scala.

I am working on this project where I need to get the table data in a spark dataframe and send it in a mail. The language to be used is Scala.

用于保存表数据的数据框如下:-

The dataframe to hold the table data is as follows:-

val sqlDfUT = hiveCon.sql("select * from UserTable")

我需要在邮件中将"sqlDfUT"作为消息正文发送.

I need to send "sqlDfUT" as a message body in a mail.

发送邮件的代码是:

sendScalaMail("[e-mail]","Users Data Sent : \n " + sqlDfUT +
                    ",\nMail sent from host: " + java.net.InetAddress.getLocalHost().getHostName(),
                    "12525","Hive Data Checking completed for given User: 12525" )

def sendScalaMail (mailSender:String, strMailBody:String, mailIdList:String, strMailSubj:String)={

if ((mailIdList == null) && (mailIdList.equals(""))){

  writeToLog("Email ID not defined")
}
writeToLog("<----Sender---->"+mailSender)
writeToLog("<----strMailBody---->"+strMailBody)
writeToLog("<----mailIdList---->"+mailIdList)
writeToLog("<----strMailSubj---->"+strMailSubj)

val smtpHost:String = "mail.foo.com"
val prop:Properties = new Properties()
prop.put("mail.smtp.host", smtpHost)
prop.put("mail.debug", "false")
var session:Session = Session.getInstance(prop)
var toPersonList:Array[String] = mailIdList.split(",")

var toMailListSB:StringBuffer = new StringBuffer()
var toPersonName:String = ""
var toMailId:String = ""
var index:Int = 0

for(index <- 0 to toPersonList.length){

  toPersonName = toPersonList(index).asInstanceOf[String]
  toMailId = toPersonName+"@mail.foo.com"
  toMailListSB.append(toMailId)
  toMailListSB.append(";")

}
try{
  var msg:MimeMessage = new MimeMessage(session)
  msg.setFrom(new InternetAddress(mailSender))
  var toList:Array[String] = toMailListSB.toString().split(",")
  var address:Array[InternetAddress] = new InternetAddress(toList.length.toString()).asInstanceOf[Array[InternetAddress]]
  var i:Int = 0
  for(i <- 0 to toList.length){
    address(i) = new InternetAddress(toList(i))
  }
  msg.setRecipients(Message.RecipientType.TO, address)
  msg.setHeader("Content-Type", "text/html")
  msg.setSubject(strMailSubj)
  msg.setSentDate(new Date())       
  msg.setContent(strMailBody, "text/html")

  Transport.send(msg)

}
catch{
  case me:MessagingException =>{
    me.printStackTrace()
    writeToLog("<---Error in method sendScalaMail--->"+me)
  }
} }

但是，我在行中得到了错误

However, I am getting the error in line

msg.setRecipients(Message.RecipientType.TO, address)

，错误消息是

overloaded method value setRecipients with alternatives: (x$1: javax.mail.Message.RecipientType,x$2: String)Unit <and> (x$1: javax.mail.Message.RecipientType,x$2: Array[javax.mail.Address])Unit cannot be applied to (javax.mail.Message.RecipientType, Array[javax.mail.internet.InternetAddress])

如果能得到任何指导，我将感到非常高兴.谢谢

I will be really glad if I could get any guidance. Thank you

推荐答案

var address:Address = new InternetAddress(toMailId).asInstanceOf[Address]

这对我有用！！谢谢拉斐尔:)

this worked for me!! Thank you Raphael :)

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