logstash date 问题

date {
       match => ["logtime","HH:mm:ss,SSS","ISO8601"]
       target => "logtime1"
       locale => "cn"
       timezone => "Asia/Shanghai"
     }

配了这个后，取出的时间
logtime
13:43:12,009

logtime1
2018-01-01T05:43:12.009Z