编辑代码

import groovy.json.*
class ReqParam{
    String checkNumber
    ResultGroup[] resultGroup
}
class ResultGroup{
    int itemId
    String result
}
def paramConvert(param){
    def json = new JsonSlurper()
    def object = json.parseText(param)
    def resultGroupArray = [];
    resultGroupArray.add(new ResultGroup(itemId:452,result:object.Height.toString()))
    resultGroupArray.add(new ResultGroup(itemId:453,result:object.Weight.toString()))
    resultGroupArray.add(new ResultGroup(itemId:39,result:object.BMI.toString()))
    def reqParam = new ReqParam(checkNumber:object.PatientID,resultGroup:resultGroupArray)
    return JsonOutput.toJson(reqParam)
}