Consuming WebApi in MVC3

问题:

Using WebApi, what is the best way to consume a service in a MVC client?

If the response comes back as:

<?xml version="1.0" encoding="UTF-8"?>
<ArrayOfContact 
    xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <Contact>
        <Id>1</Id>
        <Name>Bilbo Baggins</Name>
    </Contact>
    <Contact>
        <Id>2</Id>
        <Name>Frodo Baggins</Name>
    </Contact>
</ArrayOfContact>

How can I take that, get my Contacts out and list them in a MVC3 Razor View using @Model?

There's a lot of examples online for the latest preview of WebApi but I can't find any that go a step further and show a client consuming the service, say using WebClient.

Thanks,

R.

回答1:

You could define a model:

public class Contact
{
    public int Id { get; set; }
    public string Name { get; set; }
}

and then consume:

var url = "http://localhost:9000/api/contacts";
using (var client = new WebClient())
using (var reader = XmlReader.Create(client.OpenRead(url)))
{
    var serializer = new XmlSerializer(typeof(Contact[]));
    var contacts = (Contact[])serializer.Deserialize(reader);
    // TODO: Do something with the contacts
}

回答2:

WCF Web API comes with a new, improved HttpClient implementation. Please take a look at this sample (which is included in the source code you can download here).

[Update]

var client = new HttpClient();
var task = client.GetAsync("http://webapi/Contacts");
var contacts = task.ContinueWith(
    t => {
        return t.Result.Content.ReadAsAsync<List<Contact>>();
    }).Unwrap().Result;

Console.WriteLine(contacts.Count);