正则表达式

分组匹配

 def main(args: Array[String]): Unit = {
    val str = "<doc table=\"Target\" action=\"Modify\" time=\"2021-02-04 20:46:10\" partitionId=\"0\" partitionSize=\"6\" partitionKey=\"74514480\" source=\"FunDpShopStockSearch\" srcTimeMillis=\"1612442770000\" preConvertTimeMillis=\"1612442770239\" postGenMsgTimeMillis=\"1612442770275\"> targetId=16260698 cpcTgIdx= cpcTgIdxHash=0 </doc>"
    val  pattern = Pattern.compile("(\\w+)=\"(\\d+)\"")
    val  matcher =  pattern.matcher(str)
    while (matcher.find()){
        // 0 是全部
      val rest =matcher.group(1)
      val rest1 =matcher.group(2)

      println(s" ${matcher.group(0)}  $rest => $rest1")
    }
  }

 partitionId="0"  partitionId => 0
 partitionSize="6"  partitionSize => 6
 partitionKey="74514480"  partitionKey => 74514480
 srcTimeMillis="1612442770000"  srcTimeMillis => 1612442770000
 preConvertTimeMillis="1612442770239"  preConvertTimeMillis => 1612442770239
 postGenMsgTimeMillis="1612442770275"  postGenMsgTimeMillis => 1612442770275