编辑代码

import groovy.json.*
class ReqParam{
    String billingCode
    String base64
    String type
}
def paramConvert(param){
    def json = new JsonSlurper()
    def object = json.parseText(param)
    def reqParam = new ReqParam(billingCode:object.BAR_NO,base64:object.reportFile,type:'pdf')
    return JsonOutput.toJson(reqParam)
}