字符串的长度超过maxJsonLength属性上设置的值。 在MVC3中

MVC3（.cshtml文件）

$.getJSON(URL, Data, function (data) { document.getElementById('divDisplayMap').innerHTML = data; if (data != null) { $('#myTablesId').show(); tdOnclickEvent(); } else { $('#myTablesId').hide(); } }).error(function (xhr, ajaxOptions, thrownError) { debugger; }); 

在服务器端

  public JsonResult ZoneType_SelectedState(int x_Id, int y_Id) { JsonResult result = new JsonResult(); result.Data = "LongString";//Longstring with the length mention below return Json(result.Data,"application/json", JsonRequestBehavior.AllowGet); } 

从服务器端我传递的字符串长度为1194812并且超过了。 但我得到的错误说

 "Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property." 

请帮帮我ASP

Answer 1

您可以编写一个自定义ActionResult，它允许您指定序列化程序可以处理的最大数据长度：

 public class MyJsonResult : ActionResult { private readonly object data; public MyJsonResult(object data) { this.data = data; } public override void ExecuteResult(ControllerContext context) { var response = context.RequestContext.HttpContext.Response; response.ContentType = "application/json"; var serializer = new JavaScriptSerializer(); // You could set the MaxJsonLength to the desired size - 10MB in this example serializer.MaxJsonLength = 10 * 1024 * 1024; response.Write(serializer.Serialize(this.data)); } } 

然后使用它：

 public ActionResult ZoneType_SelectedState(int x_Id, int y_Id) { string data = "LongString";//Longstring with the length mention below; return new MyJsonResult(data); } 

Answer 2

尝试更新您的Controller方法，如下所示：

 public JsonResult ZoneType_SelectedState(int x_Id, int y_Id) { var result = Json("LongString", JsonRequestBehavior.AllowGet); result.MaxJsonLength = int.MaxValue; return result; } 

希望这可以帮助…