C#解析JSON数组
方式一
第一步:使用前，需下载:Newtonsoft.Json.dll
没有的，请到我百度云盘下载
链接：https://pan.baidu.com/s/1JBkee4qhtW7XOyYFiGOL2Q
提取码：b5uq
第二步：引入命名空间：using Newtonsoft.Json;
第三步：封装一个函数，方便以后使用
待解析JSON数组
函数：
public static Newtonsoft.Json.Linq.JArray GetToJsonList(string json) { Newtonsoft.Json.Linq.JArray jsonArr = (Newtonsoft.Json.Linq.JArray)JsonConvert.DeserializeObject(json); return jsonArr; }
实现：
搞定~
方式二(推荐)：
第一步就是要根据这个JSON来写出对应的实体类。用来存放数据。这个实体类如何写的？其实非常简单。因为一般不需要手动自己写，当然，你要是喜欢也可以自己写。不过我一般使用网站直接转换。自己百度 查一下，JSON转C#实体类，就会有很多网站给你转。
我使用的是这个网站：http://www.bejson.com/convert/json2csharp/
{"message":"ok","nu":"367847964498","ischeck":"1","condition":"F00","com":"shunfeng","status":"200","state":"3","data":[{"time":"2017-09-21 09:33:09","ftime":"2017-09-21 09:33:09","context":"已签收,感谢使用顺丰,期待再次为您服务","location":""},{"time":"2017-09-21 09:09:48","ftime":"2017-09-21 09:09:48","context":"快件交给巩向涛，正在派送途中（联系电话：18806439871）","location":""},{"time":"2017-09-21 07:02:41","ftime":"2017-09-21 07:02:41","context":"快件到达 【淄博市桓台田庄速运营业点 】","location":""},{"time":"2017-09-20 15:32:00","ftime":"2017-09-20 15:32:00","context":"快件在【淄博市桓台县工业街营业点】已装车，准备发往下一站","location":""},{"time":"2017-09-20 13:37:08","ftime":"2017-09-20 13:37:08","context":"快件到达 【淄博市桓台县工业街营业点】","location":""},{"time":"2017-09-20 10:47:07","ftime":"2017-09-20 10:47:07","context":"快件在【淄博高新集散中心】已装车，准备发往下一站","location":""},{"time":"2017-09-20 10:15:47","ftime":"2017-09-20 10:15:47","context":"快件到达 【淄博高新集散中心】","location":""},{"time":"2017-09-19 23:20:18","ftime":"2017-09-19 23:20:18","context":"快件在【深圳总集散中心】已装车，准备发往下一站","location":""},{"time":"2017-09-19 22:39:27","ftime":"2017-09-19 22:39:27","context":"快件到达 【深圳总集散中心】","location":""},{"time":"2017-09-19 18:57:33","ftime":"2017-09-19 18:57:33","context":"快件在【深圳龙华新区华联社区营业部】已装车，准备发往下一站","location":""},{"time":"2017-09-19 16:12:21","ftime":"2017-09-19 16:12:21","context":"顺丰速运 已收取快件","location":""}]}
只需将JSON放到这个网站，自动给我们生成实体类即可
实体类：
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace WindowsFormsApplication1 { /// <summary> /// JSON数据的实体类 /// </summary> public class Root { /// <summary> /// /// </summary> public string message { get; set; } /// <summary> /// /// </summary> public string nu { get; set; } /// <summary> /// /// </summary> public string ischeck { get; set; } /// <summary> /// /// </summary> public string condition { get; set; } /// <summary> /// /// </summary> public string com { get; set; } /// <summary> /// /// </summary> public string status { get; set; } /// <summary> /// /// </summary> public string state { get; set; } /// <summary> /// /// </summary> public List<DataItem> data { get; set; } } public class DataItem { /// <summary> /// /// </summary> public string time { get; set; } /// <summary> /// /// </summary> public string ftime { get; set; } /// <summary> /// 已签收,感谢使用顺丰,期待再次为您服务 /// </summary> public string context { get; set; } /// <summary> /// /// </summary> public string location { get; set; } } }
实体类创建好后，我们还需要一个DLL文件，Newtonsoft.Json.DLL,看方式一
封装一个方法
/// <summary> /// 将JSON转字符串(包括数组) /// </summary> /// <typeparam name="T"></typeparam> /// <param name="json"></param> /// <returns></returns> public static T JsonConvertObject<T>(string json) { return JsonConvert.DeserializeObject<T>(json); }
调用即可
以下JSON帮助类
using System.Collections.Generic; using System.IO; using Newtonsoft.Json; using Newtonsoft.Json.Linq; using System.Data; using System.Reflection; using System; namespace Sam.OA.Common { /// <summary> /// Json帮助类 /// 使用前需引用开源项目类库：Newtonsoft.Json.dll /// </summary> public sealed class JsonHelper { /// <summary> /// 将对象序列化为json格式 /// </summary> /// <param name="obj">序列化对象</param> /// <returns>json字符串</returns> public static string SerializeObjct(object obj) { return JsonConvert.SerializeObject(obj); } /// <summary> /// 解析JSON字符串生成对象实体 /// </summary> /// <typeparam name="T">实体类</typeparam> /// <param name="json">JSON字符串</param> /// <returns></returns> public static T JsonConvertObject<T>(string json) { return JsonConvert.DeserializeObject<T>(json); } /// <summary> /// 解析JSON字符串生成对象实体 /// </summary> /// <typeparam name="T">对象类型</typeparam> /// <param name="json">json字符串</param> /// <returns></returns> public static T DeserializeJsonToObject<T>(string json) where T:class { JsonSerializer serializer = new JsonSerializer(); StringReader sr = new StringReader(json); object obj = serializer.Deserialize(new JsonTextReader(sr), typeof(T)); T t = obj as T; return t; } /// <summary> /// 解析JSON数组生成对象实体集合 /// </summary> /// <typeparam name="T">对象类型</typeparam> /// <param name="json">json数组</param> /// <returns>对象实体集合</returns> public static List<T> DeserializeJsonToList<T>(string json) where T : class { JsonSerializer serializer = new JsonSerializer(); StringReader sr = new StringReader(json); object obj = serializer.Deserialize(new JsonTextReader(sr), typeof(List<T>)); List<T> list = obj as List<T>; return list; } /// <summary> /// 将JSON转数组 /// 用法:jsonArr[0]["xxxx"] /// </summary> /// <param name="json">json字符串</param> /// <returns></returns> public static JArray GetToJsonList(string json) { JArray jsonArr = (JArray)JsonConvert.DeserializeObject(json); return jsonArr; } /// <summary> /// 将DataTable转换成实体类 /// </summary> /// <typeparam name="T">实体类</typeparam> /// <param name="dt">DataTable</param> /// <returns></returns> public static List<T> DtConvertToModel<T>(DataTable dt) where T : new() { List<T> ts = new List<T>(); foreach (DataRow dr in dt.Rows) { T t = new T(); foreach (PropertyInfo pi in t.GetType().GetProperties()) { if (dt.Columns.Contains(pi.Name)) { if (!pi.CanWrite) continue; var value = dr[pi.Name]; if (value != DBNull.Value) { switch (pi.PropertyType.FullName) { case "System.Decimal": pi.SetValue(t, decimal.Parse(value.ToString()), null); break; case "System.String": pi.SetValue(t, value.ToString(), null); break; case "System.Int32": pi.SetValue(t, int.Parse(value.ToString()), null); break; default: pi.SetValue(t, value, null); break; } } } } ts.Add(t); } return ts; } } }
