grok 正则也支持常规正则

2016-08-29 17:40:01,19 INFO com.zjzc.common.utils.HttpUtil - 请求接口： https://www.zjcap.cn/pay/interface/querypayorder,耗时=-173 

^\s*%{TIMESTAMP_ISO8601}

{
  "TIMESTAMP_ISO8601": [
    [
      "2016-08-29 17:40:01,19"
    ]
  ],"YEAR": [
    [
      "2016"
    ]
  ],"MONTHNUM": [
    [
      "08"
    ]
  ],"MONTHDAY": [
    [
      "29"
    ]
  ],"HOUR": [
    [
      "17",null
    ]
  ],"MINUTE": [
    [
      "40","SECOND": [
    [
      "01,"ISO8601_TIMEZONE": [
    [
      null
    ]
  ]
}