“标签:价值，标签:价值，.”

Question

我有一个字符串，它看起来像"label:value“项的逗号列表。

package testParsers

import org.scalatest.{Matchers, FlatSpec}

class testReturnStrParser extends FlatSpec with Matchers{
  import parsers.ReturnStringParser

  "return string parser" should "find the height in ret string" in {
    val teststr = "blahblah:123, height:80.3"
    val s = ReturnStringParser.findVal("height", teststr)
    s should have length 1
    s.head shouldEqual ("80.3")
  }

  it should "work if it is in the middle" in {
    val teststr = "blahblah:123, height:80.3,weight:100.0"
    val s = ReturnStringParser.findVal("height", teststr)
    s should have length 1
    s.head shouldEqual ("80.3")
  }

}

当标签height位于中间时，我正试图使类正常工作：

package parsers

object ReturnStringParser {
  def findVal(fieldName: String, s: String) = {
    val rx = s"(?<=$fieldName:)"+"(.*)*[^,\\s]*"
    (rx.r)
      .findAllIn(s)
      .toList
  }
}

Answer 1

这样做是可行的：

val rx = s"(?<=$fieldName:)"+"([^,]*)"

https://regex101.com/r/aC4vA3/1