• C#解析Json值中含数组


    可以使用开源的类库Newtonsoft.Json。

    例如解析如下

    string json =
    {
    "result": "ok", // ret 值为 ok 时 返回 data 数据 为err时返回msg数据
    "data": [
    "ava", /
    "ben",
    "ccc",
    "ddd",
    ]
    };

    函数如下

    public string cutJson(string json,string item,int index)
    {
    JObject jo = (JObject)JsonConvert.DeserializeObject(json);
    string value = jo[item][index].ToString();
    return value;
    }

    其中item表示为Json中的key(名称), index表示某个item对应的value(值对)中的特定项

    拓展:

    Api接口接受Post过来的查询条件并返回数据

    Post查询条件 (用Postman放在Body里调试)

    {
    "PN": "ABCDEFGHIJ-00",
    "cuPNList": [
    {
    "cuPN": "9A200000000000000"
    } ,
    {
    "cuPN": "900000000030000"
    }
    ]
    }

    Api接口

     1 [HttpGet]
     2 [Route("api/GetLotCardMIMAFInfo")]
     3 public HttpResponseMessage GetLotCardMIMAFInfo()
     4 {
     5 var data = Request.Content.ReadAsStringAsync().Result; 
     6 var PNlist = "";
     7 JObject jsonObj = JObject.Parse(data);
     8 string PNno = jsonObj["PN"].ToString();
     9 
    10 JArray jsonAry = JArray.Parse(jsonObj["cuPNList"].ToString());
    11 JObject stu1Obj = JObject.Parse(jsonAry[0].ToString());
    12 string cuPN = stu1Obj["cuPN"].ToString();
    13 foreach (var ss in jsonAry) //查找某个字段与值
    14 {
    15 PNlist = PNlist + ss["cuPN"].ToString() + ","; // ((JObject)ss)["cuPN"]; // JObject.Parse(jsonAry[0].ToString());
    16 } 
    17 JsonData jd = new JsonData();
    18 //JavaScriptSerializer js = new JavaScriptSerializer();
    19 //var resultqq = JsonConvert.DeserializeObject<List<PNitem>>(cuPNList);
    20 //List<PNitem> lst = js.Deserialize<List<PNitem>>(cuPNList);
    21 //var PNlist = "";
    22 //for (int i = 0; i < lst.Count; i++)
    23 //{
    24 // PNlist = PNlist + lst[i].cuPN +",";
    25 //} 
    26 DataTable dt = checkInplanservice.GettLotCardInfoTable(PNno);
    27 DataTable dtMAF = checkInplanservice.GettLotCardMAFInfoTable(PNlist);
    28 //OBJ转化成JSON
    29 jd.Status = HandleStatus.Success;
    30 jd.Data = new
    31 {
    32 cuLayerType = dt.Rows[0]["LayerLevel"],
    33 cuCustomer = dt.Rows[0]["MiCustPn"],
    34 cuCustomerName = dt.Rows[0]["MiCustName"],
    35 cuQRCustomerPN = "",
    36 cuQRCustomerPNVersion = "",
    37 cuPNLOrigin = dt.Rows[0]["lvdr"],
    38 cuSize = dt.Rows[0]["Value"],
    39 cuCurrSize = dt.Rows[0]["MiSetArea"],
    40 cuHSFRequirement = dt.Rows[0]["AttrCode"],
    41 cuPNList = dtMAF,
    42 test= new[] {new {Name ="Tom",Age=30},
    43 new {Name ="Lily", Age=22}}
    44 };
    45 string msgAll = JsonConvert.SerializeObject(jd);
    46 return JsonResult(msgAll);
    47 
    48 
    49 //string json = JsonConvert.SerializeObject(dt); 
    50 ////返回json数
    51 //return new HttpResponseMessage()
    52 //{
    53 // Content = new StringContent(json, Encoding.UTF8, "application/json"),
    54 //};
    55 
    56 }
    View Code
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  • 原文地址:https://www.cnblogs.com/Depingblogs/p/13831040.html
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