POST xml to .Net Core Web API

Question

I have this action on a .Net Core Web API Controller called HomeController:

[HttpPost]
public IActionResult TestMethod([FromForm] DocumentDto xml) {
    int abc = 0;

    return Ok();
}

and the model DocumentDto:

[XmlRoot(ElementName = "document", Namespace = "")]
public class DocumentDto
{
    [XmlElement(DataType = "string", ElementName = "id")]
    public string Id { get; set; }

    [XmlElement(DataType = "string", ElementName = "content")]
    public string Content { get; set; }

    [XmlElement(DataType = "string", ElementName = "author")]
    public string Author { get; set; }
}

I have also added a breakpoint on the int abc = 0; and I use Postman to hit the action as displayed below

The xml used for the request is the following

<document>
    <id>12345</id>
    <content>This is a Test</content>
    <author>vchan</author>
</document>

However, during debugging the xml variable has null properties as shown below

Also, on the Startup.cs file I have included the AddXmlSerializerFormatters() and it is as below:

services
    .AddMvc()
    .AddXmlSerializerFormatters()
    .SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

Why is the xml not parsed?

Check xmlbounty.Models.DocumentDto which is your input from the test method and see if you are inputting the xml. — jdweng
– jdweng, Commented Aug 14, 2020 at 9:01
I do not understand what you mean with "see if you are inputting the xml" — vchan
– vchan, Commented Aug 14, 2020 at 9:25
Where are you reading the xml? The issue is not parsing. You are parsing an empty xml file. — jdweng
– jdweng, Commented Aug 14, 2020 at 9:35
@jdweng I am not reading it since I am not sending an xml file but a string in the request body which should be decoded as xml. — vchan
– vchan, Commented Aug 14, 2020 at 10:01

itdoesntwork · Accepted Answer · 2020-08-14 09:59:23Z

2

Based on your request the raw XML should be parsed [FromBody] and not [FromForm].

answered Aug 14, 2020 at 9:59

itdoesntwork

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1 Comment

vchan Over a year ago

That did it. Now .net reads and understands the raw request body. Thank you!

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