POST json进入WCF服务返回（400 BAD请求）

Question

I Trying to POST a json data into self hosted WCF service

POST is working good when json string such as

{"data": "testdata"}

same POST is doesn't working and returning 400 (Bad Request) error message when json string as

{data: [{
     data1: "testvalue1",
     data2: "testvalue2",
     data3: "testvalue3",
     data4: "testvalue4",
}]
}

And this is my WCF service Code

<OperationContract>
<WebInvoke(Method:="POST", ResponseFormat:=WebMessageFormat.Json, RequestFormat:=WebMessageFormat.Json, BodyStyle:=WebMessageBodyStyle.Wrapped)>
Private Function DoWork(ByVal data As string) As system.servicemodel.channels.message

    // DO SOMETHING WITH DATA

end function

What is difference between json string and nested json string in my case

And how can i solve my problem

Thanks.

Answer 1

WCF cannot deserialize complex object represented in json into string . In order to make the example work you need to accept a collection of complex objects in operation

//complex object class
[DataContract]
public class DataModel
{
    [DataMember(Name = "data1")]
    public string Data1 { get; set; }

    [DataMember(Name = "data2")]
    public string Data2 { get; set; }

    [DataMember(Name = "data3")]
    public string Data3 { get; set; }

    [DataMember(Name = "data4")]
    public string Data4 { get; set; }
}

private Message DoWork(List<DataModel> data)