Sending array as parameters using POST method in senchatouch2

问题

Using this service i want to store array value into database using POST method in senchatouch2..Service is written in (WCF)

Service declaration :

[OperationContract]
[WebInvoke(Method = "POST", 
           ResponseFormat = WebMessageFormat.Json,
           RequestFormat = WebMessageFormat.Json,
           BodyStyle = WebMessageBodyStyle.Wrapped,
           UriTemplate = "/Check1")]
int Psngr(string[] FirstName);

Service definition :

public static int Psngr(string[] FirstName)
{  
    List<Psgr> psgr = new List<Psgr>();
    var getVal = from s in FirstName select s;
    int count = getVal.Count();

    SqlConnection con = new SqlConnection(WebConfigurationManager.ConnectionStrings["db"].ToString());
    con.Open();

    using (var cmd = new SqlCommand("SP_InsertCheck1", con))
    {
        int result;
        cmd.CommandType = CommandType.StoredProcedure;

        for (int i = 0; i < count; i++)
        {
            cmd.Parameters.Clear();
            cmd.Parameters.AddWithValue("@FirstName", FirstName[i]);

            using (var Da = new SqlDataAdapter(cmd))
            using (var Ds = new DataSet())
            {
                Da.Fill(Ds);
                result = Convert.ToInt16(Ds.Tables[0].Rows[0]["Result"].ToString());
            }
        }
        return 1;
    }
}

I accesssed this service through my ajax request as follows:

Ext.Ajax.request({
    url:'http://ws.easy4booking.com/E4b.svc/Check1',                                                   
    method:'POST',                                            
    disableCaching: false,                                          
    headers: {
       'Accept': 'application/json',
       'Content-Type': 'application/json'
    },
    params: {
        FirstName:fname_toString,  //FirstName:["Sam","Paul"],
},
    success:function(response) {
        console.log(response);
    }
});

When I accessed this service lik mentioned above i got following error

Request Error:

The server encountered an error processing the request. The exception message is 'The formatter threw an exception while trying to deserialize the message: Error in deserializing body of request message for operation 'Psngr'. Encountered unexpected character 'F'.'. See server logs for more details. The exception stack trace is:

at System.ServiceModel.Dispatcher.OperationFormatter.DeserializeRequest(Message message, Object[] parameters) at System.ServiceModel.Dispatcher.DemultiplexingDispatchMessageFormatter.DeserializeRequest(Message message, Object[] parameters) at System.ServiceModel.Dispatcher.UriTemplateDispatchFormatter.DeserializeRequest(Message message, Object[] parameters) at System.ServiceModel.Dispatcher.CompositeDispatchFormatter.DeserializeRequest(Message message, Object[] parameters) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.DeserializeInputs(MessageRpc& rpc) at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage41(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage3(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage2(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage11(MessageRpc& rpc) at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage1(MessageRpc& rpc) at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)

回答1:

When v use POST method to pass parameters in SenchaTouch2 use jsonData in Ajax Request like,

Ext.Ajax.request({ url:'', method:'POST', disableCaching:false, headers: { 'Accept':'application/json', 'Content-Type':'application/json' }, jsonData: { FirstName:fname //{"FirstName":["Sam","paul"]} }, success: function(response) { console.log(response.responseText); }, failure: function(response) { console.log(response.responseText); }, });

回答2:

When your client does a request to the WCF Rest service the raw request should look something like below:

POST http://localhost/SampleService/RestService/Check1 HTTP/1.1
User-Agent: Fiddler
Content-Type: application/json
Host: localhost
Content-Length: 33

{"FirstName":["Sam","paul"]}

Seems like your sencha code is passing the string[] which WCF is not able to deserialize. You might consider to pass it as jsonData rather than param.

Also look at this link which might help.(The service they are trying to consume is in Spring MVC but i guess it should be the same for WCF service as well)

来源：https://stackoverflow.com/questions/16012922/sending-array-as-parameters-using-post-method-in-senchatouch2