反序列化此json字符串时遇到问题:
{
"UserName": "Person1",
"TechOpinion": "Under Repair",
"CodeStatus": "0",
"DateYear": "2016",
"TechCode": "Person2",
"CReception": [{
"CodeRecep": "146001"
}, {
"CodeRecep": "146002"
}, {
"CodeRecep": "146003"
}, {
"CodeRecep": "146004"
}]
}
我想每次调用一个带有根值和一个CodeRecep值的存储过程(按存储过程将调用的{{4次}}中的CodeRecep值的数量}} 我在两个单独的.class文件中为json类型编写了两个类 第一个保存根值如下:
Public Class ArrayJSONParameter
Dim _UserName As String
Dim _TechOpinion As String
Dim _CodeStatus As String
Dim _DateYear As String
Dim _TechCode As String
Dim _CReception As CodeReceptions
Public Property UserName() As String
Get
Return _UserName
End Get
Set(ByVal value As String)
_UserName = value
End Set
End Property
Public Property TechOpinion() As String
Get
Return _TechOpinion
End Get
Set(ByVal value As String)
_TechOpinion = value
End Set
End Property
Public Property CodeStatus() As String
Get
Return _CodeStatus
End Get
Set(ByVal value As String)
_CodeStatus = value
End Set
End Property
Public Property DateYear() As String
Get
Return _DateYear
End Get
Set(ByVal value As String)
_DateYear = value
End Set
End Property
Public Property TechCode() As String
Get
Return _TechCode
End Get
Set(ByVal value As String)
_TechCode = value
End Set
End Property
Public Property CReception() As CodeReceptions
Get
Return _CReception
End Get
Set(ByVal value As CodeReceptions)
_CReception = value
End Set
End Property
End Class
和第二个保持在数组内部如下:
Public Class CodeReceptions
Dim _CodeRece As String
Public Property CodeRecep() As String
Get
Return _CodeRece
End Get
Set(ByVal value As String)
_CodeRece = value
End Set
End Property
End Class
我在webservice中的主要方法代码是:
<WebMethod()> _
Public Function JsonSample(ByVal jsonTxt As String) As String
Dim _JSONArray As ArrayJSONParameter = JsonConvert.DeserializeObject(Of ArrayJSONParameter)(jsonTxt)
Return "sample text" '_JSONArray.UserName
End Function
但是当我尝试使用我的json字符串执行web服务时,我遇到了这个错误:
Newtonsoft.Json.JsonSerializationException: Cannot deserialize the current JSON array (e.g. [1,2,3]) into type 'CodeReceptions' because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.
To fix this error either change the JSON to a JSON object (e.g. {"name":"value"}) or change the deserialized type to an array or a type that implements a collection interface (e.g. ICollection, IList) like List<T> that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array.
Path 'CReception', line 1, position 119.
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureArrayContract(JsonReader reader, Type objectType, JsonContract contract) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 823
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateList(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, Object existingValue, String id) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 848
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 293
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 1018
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 2393
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 485
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 291
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\Serialization\JsonSerializerInternalReader.cs:line 196
at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\JsonSerializer.cs:line 823
at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\JsonConvert.cs:line 863
at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\JsonConvert.cs:line 820
at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value) in C:\Development\Releases\Json\Working\Newtonsoft.Json\Working-Signed\Src\Newtonsoft.Json\JsonConvert.cs:line 757
at JSONWS.JsonSample(String jsonTxt)
我花了最后两天阅读反序列化互联网中的线程,但类似的线程使用简单的json文本,但我的问题是在数组内部。 我找不到正确的答案,所以请帮助我。 为什么我得到那个错误?以及如何在代码中访问内部数组值?
答案 0 :(得分:0)
您的CReception
媒体资源必须是CodeReceptions
的数组,而不是CodeReceptions
个数组:
Dim _CReception As CodeReceptions()
'...
Public Property CReception() As CodeReceptions()
Get
Return _CReception
End Get
Set(ByVal value As CodeReceptions())
_CReception = value
End Set
End Property
如果您愿意,可以是List(Of CodeReceptions)
。