first commit

2025-09-17 20:04:00 +08:00
commit 3d8675b65c
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+using Newtonsoft.Json;
+using System;
+using System.IO;
+using System.Runtime.Serialization.Json;
+using System.Text;
+
+namespace JinYuan.Helper
+{
+    public class JsonHelper
+    {
+        /// <summary>
+        /// 使用Newtonsoft.json.dll对象序列化成Json字符串
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="t"></param>
+        /// <returns></returns>
+        public static string EntityToJson<T>(T t)
+        {
+            try
+            {
+                return JsonConvert.SerializeObject(t);
+            }
+            catch (Exception)
+            {
+                return string.Empty;
+            }
+        }
+
+        /// <summary>
+        /// 使用Newtonsoft.json.dll 将Json字符串反序列化成对象
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="json"></param>
+        /// <returns></returns>
+        public static T JsonToEntity<T>(string json)
+        {
+            try
+            {
+                return (T)JsonConvert.DeserializeObject(json, typeof(T));
+            }
+            catch (Exception)
+            {
+                return default(T);
+            }
+        }
+
+        /// <summary>
+        /// 实体类转换成JSON字符串
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="obj"></param>
+        /// <returns></returns>
+        public static string EntityToJson2<T>(T obj)
+        {
+            //序列化
+            DataContractJsonSerializer js = new DataContractJsonSerializer(typeof(T));
+            MemoryStream msObj = new MemoryStream();
+            //将序列化之后的Json格式数据写入流中
+            js.WriteObject(msObj, obj);
+            msObj.Position = 0;
+            //从0这个位置开始读取流中的数据
+            StreamReader sr = new StreamReader(msObj, Encoding.Default);
+            string json = sr.ReadToEnd();
+            sr.Close();
+            msObj.Close();
+            return json;
+        }
+
+
+        /// <summary>
+        /// JSON字符串转换成实体类
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="json"></param>
+        /// <returns></returns>
+        public static T JsonToEntity2<T>(string json) where T : class
+        {
+            //反序列化
+            using (var ms = new MemoryStream(Encoding.Default.GetBytes(json)))
+            {
+                DataContractJsonSerializer deseralizer = new DataContractJsonSerializer(typeof(T));
+                T model = (T)deseralizer.ReadObject(ms);// //反序列化ReadObject
+                return model;
+            }
+        }
+
+
+
+    }
+}