問題背景：
在使用asp.net mvc 結(jié)合jquery esayui做一個系統(tǒng)，但是在使用使用this.json方法直接返回一個json對象，在列表中顯示時發(fā)現(xiàn)datetime類型的數(shù)據(jù)在轉(zhuǎn)為字符串是它默認(rèn)轉(zhuǎn)為Date(84923838332223)的格式，在經(jīng)過查資料發(fā)現(xiàn)使用前端來解決這個問題的方法不少，但是我又發(fā)現(xiàn)在使用jquery easyui時，加載列表數(shù)據(jù)又不能對數(shù)據(jù)進行攔截，進行數(shù)據(jù)格式轉(zhuǎn)換之后再加載，后來發(fā)現(xiàn)可以通過自定義JsonResult實現(xiàn)，認(rèn)為這種方法比較可行，就開始研究
我們先來看看jsonResult的源碼
public class JsonResult : ActionResult
{
public JsonResult()
{
this.JsonRequestBehavior = System.Web.Mvc.JsonRequestBehavior.DenyGet;
}
public override void ExecuteResult(ControllerContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
if ((this.JsonRequestBehavior == System.Web.Mvc.JsonRequestBehavior.DenyGet) && string.Equals(context.HttpContext.Request.HttpMethod, "GET", StringComparison.OrdinalIgnoreCase))
{
throw new InvalidOperationException(MvcResources.JsonRequest_GetNotAllowed);
}
HttpResponseBase response = context.HttpContext.Response;
if (!string.IsNullOrEmpty(this.ContentType))
{
response.ContentType = this.ContentType;
}
else
{
response.ContentType = "application/json";
}
if (this.ContentEncoding != null)
{
response.ContentEncoding = this.ContentEncoding;
}
if (this.Data != null)
{
JavaScriptSerializer serializer = new JavaScriptSerializer();
response.Write(serializer.Serialize(this.Data));
}
}
public Encoding ContentEncoding { get; set; }
public string ContentType { get; set; }
public object Data { get; set; }
public System.Web.Mvc.JsonRequestBehavior JsonRequestBehavior { get; set; }
}
}
當(dāng)我看到上面代碼中的紅色部分，我感到有些熟悉，心里比較高興，以前使用過ashx來傳json的都應(yīng)該用過此方法吧
原來它也是使用這個方法進行序列化的。我們就可以在這個地方先獲取到j(luò)son序列化之后的字符串！然后做寫“小動作”，就ok了
下面我就定義了一個自己的JsonResult了
/// <summary>
/// 自定義Json視圖
/// </summary>
public class CustomJsonResult:JsonResult
{
/// <summary>
/// 格式化字符串
/// </summary>
public string FormateStr
{
get;
set;
}
/// <summary>
/// 重寫執(zhí)行視圖
/// </summary>
/// <param name="context">上下文</param>
public override void ExecuteResult(ControllerContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
HttpResponseBase response = context.HttpContext.Response;
if (string.IsNullOrEmpty(this.ContentType))
{
response.ContentType = this.ContentType;
}
else
{
response.ContentType = "application/json";
}
if (this.ContentEncoding != null)
{
response.ContentEncoding = this.ContentEncoding;
}
if (this.Data != null)
{
JavaScriptSerializer jss = new JavaScriptSerializer();
string jsonString = jss.Serialize(Data);
string p = @"\\/Date\((\d+)\)\\/";
MatchEvaluator matchEvaluator = new MatchEvaluator(this.ConvertJsonDateToDateString);
Regex reg = new Regex(p);
jsonString = reg.Replace(jsonString, matchEvaluator);
response.Write(jsonString);
}
}
/// <summary>
/// 將Json序列化的時間由/Date(1294499956278)轉(zhuǎn)為字符串 .
/// </summary>
/// <param name="m">正則匹配</param>
/// <returns>格式化后的字符串</returns>
private string ConvertJsonDateToDateString(Match m)
{
string result = string.Empty;
DateTime dt = new DateTime(1970, 1, 1);
dt = dt.AddMilliseconds(long.Parse(m.Groups[1].Value));
dt = dt.ToLocalTime();
result = dt.ToString(FormateStr);
return result;
}
}
在這里做的“小動作”就是紅色部分，得到字符串以后，通過正則表達式的方式獲得Date(12347838383333)的字符串，然后把它轉(zhuǎn)換為DateTime類型，最后在轉(zhuǎn)為我們想要的格式即可，這個格式可以使用FormateStr屬性設(shè)置。
剩下的就是使用我們自己定義的JsonResult來替換asp.net mvc默認(rèn)的JsonResult的問題了，接著從源碼中找答案，下面是Controller類的部分代碼
protected internal JsonResult Json(object data)
{
return this.Json(data, null, null, JsonRequestBehavior.DenyGet);
}
protected internal JsonResult Json(object data, string contentType)
{
return this.Json(data, contentType, null, JsonRequestBehavior.DenyGet);
}
protected internal JsonResult Json(object data, JsonRequestBehavior behavior)
{
return this.Json(data, null, null, behavior);
}
protected internal virtual JsonResult Json(object data, string contentType, Encoding contentEncoding)
{
return this.Json(data, contentType, contentEncoding, JsonRequestBehavior.DenyGet);
}
protected internal JsonResult Json(object data, string contentType, JsonRequestBehavior behavior)
{
return this.Json(data, contentType, null, behavior);
}
protected internal virtual JsonResult Json(object data, string contentType, Encoding contentEncoding, JsonRequestBehavior behavior)
{
return new JsonResult { Data = data, ContentType = contentType, ContentEncoding = contentEncoding, JsonRequestBehavior = behavior };
}
以上是Controller類來實例化JsonResult的所有代碼。我們只需寫一個BaseController類，重寫最后一個方法即可，然后我們自己的Controller在繼承BaseController即可
下面是BaseController類的部分代碼，我們?yōu)榉奖阕约簜€性化的需要又定義了兩個MyJosn的方法
/// <summary>
/// 返回JsonResult
/// </summary>
/// <param name="data">數(shù)據(jù)</param>
/// <param name="contentType">內(nèi)容類型</param>
/// <param name="contentEncoding">內(nèi)容編碼</param>
/// <param name="behavior">行為</param>
/// <returns>JsonReuslt</returns>
protected override JsonResult Json(object data, string contentType, System.Text.Encoding contentEncoding, JsonRequestBehavior behavior)
{
return new CustomJsonResult
{
Data = data,
ContentType = contentType,
ContentEncoding =contentEncoding,
JsonRequestBehavior = behavior,
FormateStr = "yyyy-MM-dd HH:mm:ss"
};
}
/// <summary>
/// 返回JsonResult.24 /// </summary>
/// <param name="data">數(shù)據(jù)</param>
/// <param name="behavior">行為</param>
/// <param name="format">json中dateTime類型的格式</param>
/// <returns>Json</returns>
protected JsonResult MyJson(object data, JsonRequestBehavior behavior,string format)
{
return new CustomJsonResult
{
Data = data,
JsonRequestBehavior = behavior,
FormateStr = format
};
}
/// <summary>
/// 返回JsonResult42 /// </summary>
/// <param name="data">數(shù)據(jù)</param>
/// <param name="format">數(shù)據(jù)格式</param>
/// <returns>Json</returns>
protected JsonResult MyJson(object data, string format)
{
return new CustomJsonResult
{
Data = data,
FormateStr = format
};
}
最后我們在自己的Controller中調(diào)用即可
public class ProjectMileStoneController : BaseController
{
/// <summary>
/// 首頁視圖
/// </summary>
/// <returns>視圖</returns>
public ActionResult Index()
{
return this.View();
}
#region 項目里程碑查詢
/// <summary>
/// 根據(jù)項目編號獲取項目里程碑
/// </summary>
/// <param name="projectId">項目編號</param>
/// <returns>項目里程碑</returns>
public JsonResult GetProjectMileStoneByProjectId(int projectId)
{
IList<ProjectMileStone> projectMileStones = FacadeContainer.Get<IProjectMileStoneService>().GetProjectMileStonesByProjectId(projectId);
return this.MyJson(projectMileStones, "yyyy.MM.dd");
}
#endregion
}
以上就是Asp.net Mvc返回JsonResult中DateTime類型數(shù)據(jù)格式問題的解決方法，希望對大家的學(xué)習(xí)有所幫助。
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