获取Json中特定的值

 

假如我们得到了一个json的数据：json===》   {"Head":{"TransCode":"X1009","TransId":"20190514145005iQXk"},"Body":{"OrderSN":"95131406006","WHSE":"aaaaa","SNs":[{"SN":"HCMPFD000621"},{"SN":"1212122"}]}}

类似这样。我们要取出来里面特定的值，而且，SNs还是一个集合。

方法如下：

string OrderSn = json["Body"]["OrderSN"].ToString();
string WHSE = json["Body"]["WHSE"].ToString();
string SNs = json["Body"]["SNs"].ToString();

SNs是一个集合，怎么取出来呢：

将json字符串解析为JToken,JObject是JToken的父类，直接使用JToken比较好用

 dynamic Sns =JToken.Parse(SNs) as dynamic

  for (int i = 0; i < Sns.Count; i++)//获取备注里的SN
   {

     if (Sns[i].SN.ToString() != "")
      {
        str += Sns[i].SN.ToString() + ",";
      }
    }

　这样子就可以循环出来里面的值了。

 HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                string response = string.Empty;
                using (StreamReader reader = new StreamReader(httpWebResponse.GetResponseStream()))
                    response = reader.ReadToEnd(); 

                var j = JObject.Parse(response);
                string shop_name = j["Success"]["items"]["item"][0]["shop_name"].ToString();//独一味日化旗舰店、、、一层层的层级关系

{
	"Success": {
		"total_results": "1",
		"items": {
			"item": [{				
				"shop_name": "独一味日化旗舰店",				
				"serial_num": "",
				"order_channel": "直营网店",			
				"updatetime": "",
				"总数量": "3739",
				"maxrowver": "",
				"tid_item": [{
					"storage_id": "1",
					"tid": "S17fdgfgfg0349",
					"pro_detail_code": "191",					
					"book_inventory": "-5.000",					
					"store_location": "",
					"pro_type": "原始产品"
				}, {
					"storage_id": "1",
					"tid": "S1712220000349",
					"pro_detail_code": "152",					
					"book_inventory": "-4.000",					
					"store_location": "",
					"pro_type": "原始产品"
				}]
			}]
		}
	}
}

　　上面这个是其他的厂商返回的一个Json格式的数据，现在可以是Json嵌套的还挺多，其中的一个项次还有数组，现在就是把这些数据捞出来存下来。

                var j = JObject.Parse(response);
                 //这个就是主干的值
                string shop_name = j["Success"]["items"]["item"][0]["shop_name"].ToString();//独一味日化旗舰店
                string tid_item = j["Success"]["items"]["item"][0]["tid_item"].ToString();
                //下面是获取数组的名细可以取出来值
                JArray jArray = JArray.Parse(tid_item);
                for (int i = 0; i < jArray.Count; i++)
                {
                    JObject jdata = (JObject)jArray[i];
                    string pro_detail_code = jdata["pro_detail_code"].ToString();
                }

　　

  //将数据动态插入到数组中去               
 JArray jArray = JArray.Parse(tid_item);
                JArray arr = new JArray();              
                for (int i = 0; i < jArray.Count; i++)
                {
                    JObject obj = new JObject();
                    JObject jdata = (JObject)jArray[i];
                    obj["linenum"] = jdata["cost_price"].ToString();
                    obj["sku"] = jdata["sell_price"].ToString();
                    obj["qty"] = jdata["original_price"].ToString();
                    obj["inventoryname"] = jdata["sys_price"].ToString();
                    obj["price"] = jdata["product_name"].ToString();
                    arr.Add(obj);
                }
                var rss = new JObject
                    {
                        {"Head",new JObject
                            {
                                {"TransCode","X1009" },
                                {"TransId",1212}
                            }
                        },
                        { "Body", new JObject
                            {
                                {"orderno", "orderno" },
                                {"billto","billto"},
                                {"shipto", "shipto"},
                                {"workid", "workid"},
                                {"tocity", "tocity"},
                                {"Address", "Address"},
                                {"Contact", "Contact"},
                                {"Tel", "Tel"},
                                {"detail", arr }
                            }
                        }
                     };