JSON extension class--jsonhelper

1. Refer to the Newtonsoft.json Library (json.net).

2. Copy and paste the Jsonhelper bar.

Source:

Using system;using system.collections.generic;using system.linq;using newtonsoft.json;using Newtonsoft.json.converters;namespace allen.core{public static partial class Jsonhelper {#region Private fie        lds private static readonly jsonserializersettings jsonsettings;        Private Const string Emptyjson = "[]"; #endregion #region Constructor Static jsonhelper () {var datetimeconverter = new Isodateti            meconverter {DateTimeFormat = "yyyy-mm-dd HH:mm:ss"}; Jsonsettings = new Jsonserializersettings {missingmemberhandling = Missingmemberhandling.ignore , nullvaluehandling = nullvaluehandling.ignore, referenceloophandling = Referenceloophandlin            G.ignore};        JSONSETTINGS.CONVERTERS.ADD (Datetimeconverter); } #endregion #region Public Methods//<summary>//Apply Formatting.none and designated jsonserialize Rsettings Settings, serializing objectsString to JSON format///</summary>//<param name= "obj" > any object </param>//<param name= "Jsonsettings" > Specify settings on a Newtonsoft.Json.JsonSerializer object, if NULL, use default settings </param>//<returns> Standard J            Son format string </returns> public static string ToJson (Object obj, Jsonserializersettings jsonsettings) {        return ToJson (obj, Formatting.none, jsonsettings); }///<summary>///Apply the specified formatting enumeration value of None and the specified jsonserializersettings setting, serialize the object to a JSON-formatted string///&LT ;/summary>//<param name= "obj" > any object </param>//<param name= "format" > Specify Newtonsoft. Json.jsontextwriter formatting options </param>///<param Name= "Jsonsettings" > in a Newtonsoft.Json.JsonSerializer pair As specified on the settings, if NULL, the default setting is used </param>///<returns> Standard JSON-formatted string </returns> public static string T        Ojson (object obj, formatting format, jsonserializersettings jsonsettings){try {return obj = = null?} EmptyJson:JsonConvert.SerializeObject (obj, format, jsonsettings??).            Jsonsettings);            } catch (Exception) {//todo LOG return emptyjson;        }}///<summary>///apply Formatting.none and specified jsonserializersettings settings to deserialize JSON data as a dynamic object <para> If an jsonserializationexception exception occurs, retry again as a collection, removing the first dynamic object of the collection. </para>///<para> conversion fails, or other exception occurs, returns the default value of the dynamic object </para>///</summary>//&lt ;p Aram Name= "JSON" > JSON string to Deserialize </param>//<param name= "Jsonsettings" > in a Newtonsoft.Json.JsonSer Specify settings on the Ializer object, and if NULL, use the default settings </param>///<returns>dynamic objects </returns> public static dyn Amic Fromjson (This string json, Jsonserializersettings jsonsettings) {return fromjson<dynamic> (JS On, Formatting.none, jsonsettings);        }///<summary>///Apply the specified formatting enumeration value of None and the specified jsonserializersettings setting to deserialize the JSON data as a dynamic object <para> If an jsonserializationexception exception occurs, retry again as a collection, removing the first dynamic object of the collection. </para>///<para> conversion fails, or other exception occurs, returns the default value of the dynamic object </para>///</summary>//&lt  ;p Aram Name= "JSON" > JSON string to Deserialize </param>//<param name= "format" > Specify Newtonsoft.Json.JsonTextWriter formatting options </param>///<param Name= "jsonsettings" > Specify settings on a Newtonsoft.Json.JsonSerializer object, if NULL, use the default Settings </param>//<returns>dynamic object </returns> public static dynamic Fromjson (This string JS On, formatting format, jsonserializersettings jsonsettings) {return fromjson<dynamic> (JSON, forma        T, jsonsettings); }///<summary>///apply Formatting.none and specified jsonserializersettings settings to deserialize JSON data to the specified. NET type object///&L t;para> if jsonserializationexcept occursIon exception, and then retry again as a collection, removing the first T object of the collection.  </para>///<para> conversion fails, or other exception occurs, returns the default value of the T object </para>///</summary>//<param Name= "JSON" > JSON string to Deserialize </param>//<param name= "Jsonsettings" > in a Newtonsoft.Json.JsonSerialize Specify settings on R object, if NULL, use default settings </param>//<typeparam name= "T" > Deserialization object Type </typeparam>//<re  turns></returns> public static T fromjson<t> (string json, Jsonserializersettings jsonsettings) where        T:class, New () {return fromjson<t> (JSON, Formatting.none, jsonsettings); }///<summary>///Apply the specified formatting enumeration value of None and the specified jsonserializersettings setting to deserialize the JSON data into the specified. NET type object/ <para> If an jsonserializationexception exception occurs, retry again as a collection, removing the first T object of the collection.  </para>///<para> conversion fails, or other exception occurs, returns the default value of the T object </para>///</summary>//<param Name= "JSON" > JSON string to Deserialize </param>//&LT;param name= "Format" > Specify formatting options for Newtonsoft.Json.JsonTextWriter </param>//<param name= "Jsonsettings" & gt; Specify settings on a Newtonsoft.Json.JsonSerializer object, if NULL, use default settings </param>///<typeparam Name= "T" > Deserialization object Type </typeparam>///<returns></returns> public static T fromjson<t> (string json, Format            Ting format, jsonserializersettings jsonsettings) where T:class, new () {T result;            if (jsonsettings = = null) {jsonsettings = jsonsettings; } try {result = string. Isnullorwhitespace (JSON)?            Default (T): jsonconvert.deserializeobject<t> (JSON, jsonsettings);            } catch (Jsonserializationexception)//After the exception has occurred, retry again in the same way as the collection. {//log try {var array = Jsonconvert.deserializeobject&lt    ;ienumerable<t>> (JSON, jsonsettings);                result = array.                FirstOrDefault ();                } catch (Exception) {//log result = default (T); }} catch (Exception) {//log result = Default (T            );        } return result;        } #endregion #region Public Extend Methods//<summary>///deserialize JSON data as a dynamic object <para> If an jsonserializationexception exception occurs, retry again as a collection, removing the first dynamic object of the collection. </para>///<para> conversion fails, or other exception occurs, returns the default value of the dynamic object </para>///</summary>//&lt ;p Aram Name= "JSON" > JSON string to Deserialize </param>//<returns>dynamic object </returns> public Stati C Dynamic Fromjson (this string json) {return fromjson<dynamic> (JSON, Formatting.none, jsonsetting        s);   }///<summary>//Deserialize JSON data to the specified. NET type Object     <para> If an jsonserializationexception exception occurs, retry again as a collection, removing the first T object of the collection.  </para>///<para> conversion fails, or other exception occurs, returns the default value of the T object </para>///</summary>//<param Name= "JSON" > JSON string to Deserialize </param>//<typeparam name= "T" > type of deserialized object </typeparam>///            lt;returns></returns> public static T fromjson<t> (this string json) where T:class, new () {        Return fromjson<t> (JSON, Formatting.none, jsonsettings); }///<summary>///Apply the default formatting enumeration value of None and the default Jsonserializersettings setting, serialize the object to a JSON-formatted string///&LT ;/summary>//<param name= "obj" > any object </param>//<returns> standard JSON-formatted string </returns&        Gt        public static string ToJson (This object obj) {return ToJson (obj, Formatting.none, jsonsettings); } public static string tojson<tsource> (this ienumerable<tsource> source, func&Lt TSource, bool> predicate, bool Isfilternull = True) {return Delegatetojson (source, enumerable = Enumerable.        Where (predicate), isfilternull);  } public static string tojson<tsource> (this ienumerable<tsource> source, func<tsource, int, bool> predicate, bool Isfilternull = True) {return Delegatetojson (source, enumerable = enumerable.        Where (predicate), isfilternull); } public static string Tojson<tsource, tresult> (this ienumerable<tsource> source, Func<tsource, TRes Ult> selector, bool Isfilternull = True) {return Delegatetojson (source, enumerable = enumerable. Where (t = = null).        Select (selector), isfilternull);  } public static string Tojson<tsource, tresult> (this ienumerable<tsource> source, func<tsource, int, Tresult> selector, bool Isfilternull = True) {return Delegatetojson (source, enumerable = Enumerable. Where (t = = null).        Select (selector), isfilternull); } public static string Tojson<tsource, tresult> (this ienumerable<tsource> source, Func<tsource, BOOL > Predicate, Func<tsource, tresult> selector, bool Isfilternull = True) {return Delegatetojson (source, enumerable = enumerable. Where (predicate).        Select (selector), isfilternull); } public static string Tojson<tsource, tresult> (this ienumerable<tsource> source, Func<tsource, BOOL > predicate, func<tsource, int, tresult> selector, bool Isfilternull = True) {return delegatet Ojson (source, enumerable = enumerable. Where (predicate).        Select (selector), isfilternull);  } public static string Tojson<tsource, tresult> (this ienumerable<tsource> source, func<tsource, int, bool> predicate, Func<tsource, tresult> selector, bool Isfilternull = True) {return DelegatEtojson (source, enumerable = enumerable. Where (predicate).        Select (selector), isfilternull);  } public static string Tojson<tsource, tresult> (this ienumerable<tsource> source, func<tsource, int, bool> predicate, func<tsource, int, tresult> selector, bool Isfilternull = True) {return Dele Gatetojson (source, enumerable = enumerable. Where (predicate).        Select (selector), isfilternull); } #endregion #region Private Methods///<summary>///delegate processing of objects that need to be serialized into JSON format, returning the standard JSON-formatted word        Character string.        By default, NULL objects are filtered, and if a null object needs to be filtered on its own when the upper layer is called,///set Isfilternull to False, Isfilternull set to False is not recommended. </summary>//<typeparam name= "TSource" ></typeparam>//<typeparam name= "TResult" ></typeparam>//<param name= "source" > objects that need to be converted to JSON format Strings </param>///<param name= "Fu NC "> Collection/Array conditional filter method delegate, return filtered collection/array </param>///<param Name= "Isfilternull" > whether to filter null objects in Ienumerable<tsource> source, default to true</param>//<returns> Standard JSON-formatted string </returns> private static string Delegatetojson<tsource, Tresult> (ienumerable<tsource> Source, func<tsource[], ienumerable<tresult>> Func, bool Isfilternull = True) {return Deleg Atetojson (source, enumerable = func (enumerable).        ToJson (), isfilternull);        }///<summary>///delegate processing of objects that need to be serialized in JSON format, return a standard JSON-formatted string.        By default, NULL objects are filtered, and if a null object needs to be filtered on its own when the upper layer is called,///set Isfilternull to False, Isfilternull set to False is not recommended. </summary>//<typeparam name= "TSource" ></typeparam>//<param name= "source" > Required object to convert to JSON-formatted string </param>///<param Name= "func" >json processing method delegate, returns a JSON-formatted string </param>///&LT;PA Ram Name= "Isfilternull" > whether to filter null objects in Ienumerable<tsource> source, default to True</param>//<returnS> standard JSON-formatted string </returns> private static string delegatetojson<tsource> (Ienumerable<tsource> s                Ource, func<tsource[], string> Func, bool Isfilternull = True) {if (source = = null) {            return Emptyjson;            } tsource[] Enumerable; if (isfilternull) {//filter null enumerable = source. Where (t = = null).            ToArray ();                } else {//does not filter null, but the upper layer needs to be aware that there are null objects inside, which can cause a where or select to throw an exception. Enumerable = Source as tsource[]?? Source.            ToArray (); } return Enumerable. Any ()?        Func (enumerable): Emptyjson; } #endregion}}

Usage Case:

Class Program {static void Main (string[] args) {//tojson method Test #region default filter null                Object var list1 = new List<test> {new Test {Id = ten, Type = $, name= "Allen"}, New Test {id = one, type = $}, new Test {id = +, Type = +}, new Test {id = 13            , type = $, name= "Peter"}, NULL, new Test {Id = +, Type = $, name=null}}; Specifies the properties required for JSON data string jsonstring = List1. ToJson (t = new {id = t.id, type = T.type}); Recommended notation, even true is omitted//string jsonstring = Jsonhelper.tojson (list1, t = = new {id = t.id, type = T.type}); The wording//string jsonstring = List1 is not recommended.            ToJson (t = new {id = t.id, type = T.type}, True);            Console.WriteLine (jsonstring); Filter out the object named "Allen" string jsonString2 = List1. ToJson (t = T.name = = "Allen"); Recommended notation, even true is omitted//sTring jsonString2 = Jsonhelper.tojson (list1, t = = T.name = "Allen"); The wording//string JsonString2 = List1 is not recommended.            ToJson (t = = T.name = = "Allen", true);            Console.WriteLine (JSONSTRING2); Filter out the object named "Allen", and specify the properties required for JSON data string jsonString3 = List1. ToJson (t = T.name = = "Allen", t = = new {id = t.id, type = T.type}); Recommended notation, even true omitted//string jsonString3 = Jsonhelper.tojson (list1, t = = T.name = "Allen", t = = new {id = T.id, type = T.type}); The wording//string JsonString3 = List1 is not recommended.            ToJson (t = = = T.name = "Allen", t = = new {id = t.id, type = T.type}, True);            Console.WriteLine (JSONSTRING3); #endregion #region do not filter null object var list2 = new List<test> {new Test { id = ten, type = $, name= "Allen"}, new test {Id = one, type = Name=, "Bolong"}, new test {I D = name=, Type = 23°c, "Popo"}, New TeSt {id = +, type = $, name= "Peter"}, new Test {id = +, type = +, name= "Willy"}}; Specifies the properties required for JSON data string jsonString4 = List2.            ToJson (t = new {id = t.id, type = T.type}, False);            Console.WriteLine (JSONSTRING4); Filter out the object named "Allen" string jsonString5 = List2.            ToJson (t = = T.name = = "Allen", false);            Console.WriteLine (JSONSTRING5); Filter out the object named "Allen", and specify the properties required for JSON data string jsonString6 = List2.            ToJson (t = = = T.name = "Allen", t = = new {id = t.id, type = T.type}, False);            Console.WriteLine (JsonString6); #endregion//fromjson<t> method Test list<test> testList1 = jsonstring.fromjson<list<t            Est>> ();            list<test> testList2 = jsonstring2.fromjson<list<test>> ();            Test test = jsonstring3.fromjson<test> (); Weak type Test var test2 = jsonstring.frOmjson ();            Newtonsoft.Json.Linq.JArray test3 = test2;        Console.readkey ();        }} internal class Test {public int Type {get; set;}        public int Id {get; set;}    public string Name {get; set;} }

PS: Is there a better package proposal?

JSON extension class--jsonhelper