reading Json and Xml

renee Nay

I am running this code and it works great ..except when I am reading the xml. it reads the json but not the xml.

I was following the directions in this post Combine XML And Json Requests And Responses In ASP.NET Core Web API .

I am trying to give the user the function to send data in either json or xml.

I don't know how to get it to also read the xml in the post function or what I did wrong

here is my code

[[Route("api/[controller]")]
    public class CancelController : Controller
    {
        [HttpGet("get.{format}"), FormatFilter]
        public IEnumerable Get()
        {
            List cancel = new List
                {
                    new BatchData { BatchNumber = "1"},
                    new BatchData { BatchNumber = "2"}
                };
            return cancel;
        }

        [HttpPost("post.{format}"), FormatFilter]
        public BatchData Post([FromBody] BatchData cancel)
        {
            if (ModelState.IsValid)
            {
                return cancel;
            }
            else
            {
                return cancel;
            }
        }
    ]

6 Replies

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Jaimin Shethiya5y ago
Hello Renee,

could you please check the below link.

https://andrewlock.net/formatting-response-data-as-xml-or-json-based-on-the-url-in-asp-net-core/#:~:text=You%20want%20to%20be%20able,format%20the%20result%20as%20JSON.

Thanks.
renee Nay5y ago
THank you for trying to help. I am trying to make a web service that allows the posting of json or xml.
when I post json it works fine, when I post xml it passes null no error and gives status on postman of 204
I need all of it to work :)
Rijwan Ansari5y ago
hi,

You can trying by adding this as well
public IServiceProvider ConfigureServices(IServiceCollection services)
{
    services.AddMvc();

    services.ConfigureMvc(options =>
    {
        // This adds both Input and Output formatters based on DataContractSerializer
        options.AddXmlDataContractSerializerFormatter();

        // To add XmlSerializer based Input and Output formatters.
        options.InputFormatters.Add(new XmlSerializerInputFormatter());
        options.OutputFormatters.Add(new XmlSerializerOutputFormatter());
    });
Rijwan Ansari5y ago
Hi,

Please skip step 2, if you are goind for alternative.

Addtionally, add this in post method in controller
[Consumes("application/xml")]
[HttpPost("post.{format}"), FormatFilter]
public BatchData Post([FromBody] BatchData cancel)
{
Can you try this way?
renee Nay5y ago
I had the first 2 steps already and the third also didn't work.

so I have this code also and agian the only thing that doesn't work is the xml string being submited and the line public batchdata post([frombody] batchData Batch is null only when I send xml
< batchData>
431864
4/13/2021 12:15:25 PM
DEMO
jgalt
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;

namespace GaltBatchWebService.Controllers
{
    [Route("api/[controller]")]
    public class BatchController : Controller
    {
        [HttpGet("get.{format}"), FormatFilter]
        public IEnumerable Get()
        {
            List batch = new List
                {
                    new BatchData { BatchNumber = "1", DateProcessed = "Sarath Lal",DealerNumber="Cochin",MemberUsername ="MyName" },
                    new BatchData { BatchNumber = "2", DateProcessed = "Anil Kumar",DealerNumber="Bangalore",MemberUsername = "myName"}
                };
            return batch;
        }
        [HttpPost("post.{format}"), FormatFilter]
        public BatchData Post([FromBody] BatchData batch)
        {
            if (ModelState.IsValid)
            {
                return batch;
            }
            else
            {
                return null;
            }
        }
    }
}
Rijwan Ansari5y ago
Hi,

You can resolve by these steps:

1. add Microsoft.AspNetCore.Mvc.Formatters.Xml package from nuget

2. Add in configurationservice
public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc()
        .AddXmlSerializerFormatters();
}
Alternatively, if the issue persist
public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc(options =>
    {
        options.FormatterMappings.SetMediaTypeMappingForFormat
            ("xml", MediaTypeHeaderValue.Parse("application/xml"));
        options.FormatterMappings.SetMediaTypeMappingForFormat
            ("config", MediaTypeHeaderValue.Parse("application/xml"));
        options.FormatterMappings.SetMediaTypeMappingForFormat
            ("js", MediaTypeHeaderValue.Parse("application/json"));
    })
        .AddXmlSerializerFormatters();
Try this to resolve.