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我面临一个奇怪的问题，在某些情况下会发生，但在常规情况下不会。我有一个 ajax 调用，它将一些数据发送到我的控制器。在大多数情况下，ajax 调用正确地将数据发布到控制器，但它失败的情况（异常）我得到一个日志，表明接收到的 json 不完整。我真的不知道这种错误行为的根本原因是什么。任何指针都会有很大帮助...

这是我的代码 -

C＃

        public class MyController : System.Web.Mvc.Controller {
      ....
      ....
        public JsonResult doPost(string x, string y, int z) {

        private JavaScriptSerializer _serialiser = new JavaScriptSerializer();
        List<Dictionary<string, object>> items = _serialiser.Deserialize<List<Dictionary<string, object>>>(x); 
 // deserialsation throws argument exception
     ...
     // do stuff after that...
    }

    ...
    }

异常详情

类型 - System.ArgumentException

message - 传入的未终止字符串。

堆栈跟踪 -

at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeString()
   at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)
   at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeDictionary(Int32 depth)
   at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)
   at System.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer)
   at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit)
   at System.Web.Mvc.JsonValueProviderFactory.GetValueProvider(ControllerContext controllerContext)
   at System.Web.Mvc.ValueProviderFactoryCollection.<>c__DisplayClassc.<GetValueProvider>b__7(ValueProviderFactory factory)
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
   at System.Web.Mvc.ValueProviderFactoryCollection.GetValueProvider(ControllerContext controllerContext)
   at System.Web.Mvc.ControllerBase.get_ValueProvider()
   at System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor)
   at System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
   at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)

Javascript

// A - is a big object
    var jsonData = { x: JSON.stringify(A),
                    y: new Date().toString(),
                    z: A.Index
                };

$.ajax ({ 
url : '/my/doPost', 
type: 'POST', contentType: 'application/json; charset=utf-8;', 
cache: false, 
data: JSON.stringify(jsonData), 
dataType: 'json', 
async: true, 
success: function () {
  // do something on success
}, 
error: function (jqXhr, textStatus, errorThrown)  {
// do something on error
}
});

谢谢萨尔塔克

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0 回答 0