强制grails将字符串参数视为字符串集合

class CustomTagLib {
    static namespace = "custom"

    def stringToList = { attrs ->
        String inputString = attrs.inputString
        List<String> stringList = inputString.split(",").collect { it.trim() }
        out<< stringList
    }
}

<%@ taglib prefix="custom" tagdir="/WEB-INF/tags/custom" %><custom:stringToList inputString="${params.inputString}"/>

def someAction = {
    String inputString = params.inputString
    List<String> stringList = inputString.split(",").collect { it.trim() }
    [inputStringList: stringList]
}

<g:each in="${inputStringList}" var="item">
    ${item}
</g:each>