namespaceTestWebApi

{public static classWebApiConfig

{public static voidRegister(HttpConfiguration config)

{//Web API 配置和服務(wù)

#region [=>1、WebApi 返回JSON，不推薦做法性能不高]

/*config.Formatters.Clear();

config.Formatters.Remove(config.Formatters.XmlFormatter);

config.Formatters.Add(new JsonMediaTypeFormatter());

config.Formatters.JsonFormatter.SerializerSettings = new JsonSerializerSettings

{

ContractResolver = new UnderlineSplitContractResolver(), //小寫(xiě)命名法。

DateFormatString = "yyyy-MM-dd HH:mm:ss",//解決json時(shí)間帶T的問(wèn)題

Formatting = Newtonsoft.Json.Formatting.Indented,//解決json格式化縮進(jìn)問(wèn)題

ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore//解決json序列化時(shí)的循環(huán)引用問(wèn)題

};*/

#endregion

#region [=>2、WebApi 返回JSON，推薦做法性能最高]config.Services.Replace(typeof(IContentNegotiator), new JsonContentNegotiator(newJsonMediaTypeFormatter()));#endregion

//Web API 路由

config.MapHttpAttributeRoutes();

config.Routes.MapHttpRoute(

name:"DefaultApi",

routeTemplate:"api/{controller}/{action}/{id}",

defaults:new { id =RouteParameter.Optional }

);

}

}///

///在全局設(shè)置中，使用自定義的只返回Json Result。只讓api接口中替換xml，返回json。這種方法的性能是最高的！///

public classJsonContentNegotiator : IContentNegotiator

{private readonlyJsonMediaTypeFormatter _jsonFormatter;publicJsonContentNegotiator(JsonMediaTypeFormatter formatter)

{

_jsonFormatter=formatter;

}public ContentNegotiationResult Negotiate(Type type, HttpRequestMessage request, IEnumerableformatters)

{//對(duì) JSON 數(shù)據(jù)使用混合大小寫(xiě)。駝峰式,但是是javascript 首字母小寫(xiě)形式.小駝峰命名法。//config.Formatters.JsonFormatter.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();//對(duì) JSON 數(shù)據(jù)使用混合大小寫(xiě)。跟屬性名同樣的大小.輸出

_jsonFormatter.SerializerSettings.ContractResolver = new UnderlineSplitContractResolver(); //小寫(xiě)命名法。

_jsonFormatter.SerializerSettings.DateFormatString = "yyyy-MM-dd HH:mm:ss";//解決json時(shí)間帶T的問(wèn)題

_jsonFormatter.SerializerSettings.Formatting = Newtonsoft.Json.Formatting.Indented;//解決json格式化縮進(jìn)問(wèn)題

_jsonFormatter.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore;//解決json序列化時(shí)的循環(huán)引用問(wèn)題

var result = new ContentNegotiationResult(_jsonFormatter, new MediaTypeHeaderValue("application/json"));returnresult;

}

}///

///Json.NET 利用ContractResolver解決命名不一致問(wèn)題

///解決問(wèn)題：通過(guò)無(wú)論是序列化還是反序列化都達(dá)到了效果，即：ProjectName -> project_name 和 project_name -> ProjectName///

public classUnderlineSplitContractResolver : DefaultContractResolver

{protected override string ResolvePropertyName(stringpropertyName)

{return CamelCaseToUnderlineSplit(propertyName);//下劃線分割命名法//return propertyName.ToLower();//小寫(xiě)命名法

}private string CamelCaseToUnderlineSplit(stringname)

{

StringBuilder builder= newStringBuilder();for (int i = 0; i < name.Length; i++)

{var ch =name[i];if (char.IsUpper(ch) && i > 0)

{var prev = name[i - 1];if (prev != '_')

{if (char.IsUpper(prev))

{if (i < name.Length - 1)

{var next = name[i + 1];if (char.IsLower(next))

{

builder.Append('_');

}

}

}else{

builder.Append('_');

}

}

}

builder.Append(char.ToLower(ch));

}returnbuilder.ToString();

}

}

}

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