WEBAPI Return JSON format optimization

First, set WEBAPI return JSON format

Under App_start, add the following code to the register of the Webapiconfig registration function register

Config. Formatters.remove (config. Formatters.xmlformatter);

Second, set the return JSON key value uniform to lowercase

Create a new class and inherit from Defaultcontractresolver, overriding the Resolvepropertyname method,

public class Underlinesplitcontractresolver:defaultcontractresolver {     protected override string Resolvepropertyname (String propertyname)     {         //return camelcasetounderlinesplit (PropertyName);         return Propertyname.tolower ();     } }

Adding configuration code in the Webapiconfig.register method

Use mixed case for JSON data. The same size as the property name. Output Config.Formatters.JsonFormatter.SerializerSettings.ContractResolver = new Underlinesplitcontractresolver ();

Three, there are two very unhappy problems in the returned JSON format.

Look at the picture:

The first question is a null string, and here also returns NULL, feeling Back "" feel a little better

The second problem, Lastupdate is the time format, this kind of formatting looks a bit uncomfortable, if it is "2016-03-25 17:19:17" feel better.

Resolved as follows:

In solving the second problem, our new class Underlinesplitcontractresolver overrides the Createproperties method:

Resolves API NULL and time format issues protected override ilist<jsonproperty> Createproperties (type type, memberserialization memberserialization) {     return type. GetProperties
           . Select (p = =           {               var jp = base. CreateProperty (P, memberserialization);               if (JP. PropertyType = = typeof (System.String))                   JP. Valueprovider = new Nulltoemptystringvalueprovider (p);               if (JP. Propertytype.tostring (). Contains ("System.DateTime"))                   JP. Converter = new Isodatetimeconverter () {DateTimeFormat = "yyyy-mm-dd HH:mm:ss"};               return JP;           }). ToList ();}

The Nulltoemptystringvalueprovider class inherits the Ivalueprovider code as follows:

    <summary>///    resolve return JSON data null problem///    </summary> public    class Nulltoemptystringvalueprovider:ivalueprovider    {        PropertyInfo _memberinfo;        Public Nulltoemptystringvalueprovider (PropertyInfo memberInfo)        {            _memberinfo = memberInfo;        }        public object GetValue (object target)        {            Object result = _memberinfo.getvalue (target);            if (result = = NULL)             //    result = "";            if (_memberinfo.propertytype = = typeof (string) && result = = null)                result = "";            return result;        }        public void SetValue (object target, object value)        {            _memberinfo.setvalue (target, value);        }    }

The problem is resolved and the JSON returned is as follows:

Does it look more comfortable?

Four, tidy up the code

Create a new file InitAPI.cs with the following code:

  public class Initapi {public static void Init (Httpconfiguration config) {//httpconfigurati            on config = globalconfiguration.configuration; Config. Formatters.remove (config.            Formatters.xmlformatter); Resolves a circular reference issue in JSON serialization config. Formatters.JsonFormatter.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore            ; Use mixed case for JSON data.            Camel, but it is the lowercase form of the JavaScript first letter. Config.            Formatters.JsonFormatter.SerializerSettings.ContractResolver = new Camelcasepropertynamescontractresolver (); Use mixed case for JSON data. The same size as the property name. Output CONFIG.        Formatters.JsonFormatter.SerializerSettings.ContractResolver = new Underlinesplitcontractresolver (); }} public class Underlinesplitcontractresolver:defaultcontractresolver {protected override string Reso            Lvepropertyname (String propertyname) {//return camelcasetounderlinesplit (PropertyName);return Propertyname.tolower (); private string Camelcasetounderlinesplit (string name) {return name.        ToLower (); }//Resolve API NULL and time format issues protected override ilist<jsonproperty> Createproperties (type type, memberserial ization memberserialization) {return type. GetProperties (). Select (P = = {var JP = base.                       CreateProperty (P, memberserialization); if (JP. PropertyType = = typeof (System.String)) JP.                       Valueprovider = new Nulltoemptystringvalueprovider (p); if (JP. Propertytype.tostring (). Contains ("System.DateTime")) JP.                       Converter = new Isodatetimeconverter () {DateTimeFormat = "yyyy-mm-dd HH:mm:ss"};                   return JP; }).        ToList (); }}///<summary>//Resolve return JSON data null problem///</summary> public class NulltoempTystringvalueprovider:ivalueprovider {PropertyInfo _memberinfo;        Public Nulltoemptystringvalueprovider (PropertyInfo memberInfo) {_memberinfo = MemberInfo;            public object GetValue (object target) {object result = _memberinfo.getvalue (target);            if (result = = NULL)//result = "";            if (_memberinfo.propertytype = = typeof (string) && result = = NULL) result = "";        return result;        } public void SetValue (object target, object value) {_memberinfo.setvalue (target, value); }    }

To call Initapi.init (config) directly in Webapiconfig, the code is as follows:

public static class Webapiconfig    {public        static void Register (httpconfiguration config)        {            //Web API Configuration and service            //Web API Route            config. Maphttpattributeroutes ();            Config. Routes.maphttproute (               name: "Defaultapi",               routetemplate: "Api/{controller}/{id}",               defaults:new {id = Routeparameter.optional}           );            Initapi.init (config);        }    }

End

WEBAPI Return JSON format optimization