jsonHelper帮助类

使用前，需引用开源项目类using Newtonsoft.Json

链接：https://pan.baidu.com/s/1htK784XyRCl2XaGGM7RtEg
提取码：gs2n

 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
     /// 作者：陈彦斌
     /// 最后更新日期：2019年9月28日20:11:36
     /// 使用前需引用开源项目类库：Newtonsoft.Json.dll
     /// </summary>
     public sealed class JsonHelper
     {
         /// <summary>
         /// 将实体类序列化字符串
         /// </summary>
         /// <typeparam name="T">实体类</typeparam>
         /// <param name="t"></param>
         /// <returns></returns>
         public static string SerializeObject<T>(T t)
         {
             try
             {
                 return JsonConvert.SerializeObject(t);
             }
             catch (Exception ex)
             {
                 throw ex;
             }
         }
         /// <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;
         }
     }
 }