map to jsonStr，以及jsonStr to jsonObj(groovy&grails)

map to json：

import grails.converters.JSON;def map2jsonStr ={    def map = [            name:"zhangsan",            age:15,            score:["shuxue":"80","yuwen":"70"]    ]    println (map as JSON).toString()//转换为jsonStr}

输出内容：
{“name”:”zhangsan”,”age”:15,”score”:{“shuxue”:”80”,”yuwen”:”70”}}

jsonStr to jsonObj：

import groovy.json.JsonSlurper;def jsonStr2jsonObj ={    def map = [            name:"zhangsan",            age:15,            score:["shuxue":"80","yuwen":"70"],    ]    def jsonSlurper = new JsonSlurper()     def jsonObject = jsonSlurper.parseText((map as JSON).toString())    println jsonObject[0].score}

输出内容：
[yuwen:70, shuxue:80]