假如json字符串:string str = "{
"code": 1,
"msg": "成功获取数据.",
"value": {
"rows": [
{
"MYROWNUM": 1,
"WEIZHIDIANID": "GL1_GRQ04_GP021_001_02",
"EQUIPMENTID": "GL1_GRQ04_GP021_001_02",
"BEGINDATE": "2013-09-23",
"ENDDATE": "2013-10-25",
"MEASUREWEARRATE": 0,
}
],
"total": 1
}}"
其中的
MEASUREWEARRATE 是可选项,也许
MEASUREWEARRATE 中不包含
MEASUREWEARRATE 这一键值对,所以得到str对应的Jobject后,怎么判断它的某一键值是否存在?
大神们 快帮忙吧!