Downloaded 328 times
![ "opt-out" approach
"opt-in" approach
public class Product
{
public string Name { get; set; }
public decimal Price { get; set; }
[JsonIgnore]
public int ProductCode { get; set; }
}
[DataContract] public class Product
{
[DataMember] public string Name { get; set; }
[DataMember] public decimal Price { get; set; }
// omitted by default
public int ProductCode { get; set; }
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/85/The-Full-Power-of-ASP-NET-Web-API-36-320.jpg)
![public object Get()
{
return new {
Name = "Alice",
Age = 23,
Pets = new List<string> { "Fido", "Polly", "Spot" } };
}
public void Post(JObject person)
{
string name = person["Name"].ToString();
int age = person["Age"].ToObject<int>();
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/85/The-Full-Power-of-ASP-NET-Web-API-37-320.jpg)
![public class ProductMD
{
[StringLength(50), Required]
public string Name { get; set; }
[Range(0, 9999)]
public int Weight { get; set; }
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/85/The-Full-Power-of-ASP-NET-Web-API-44-320.jpg)
![ [Required]
[Exclude]
[DataType]
[Range]
[MetadataTypeAttribute( typeof( Employee.EmployeeMetadata ) )]
public partial class Employee
internal sealed class EmployeeMetadata
[StringLength(60)]
[RoundtripOriginal]
public string AddressLine { get; set; }
}
}
[StringLength(60)]
[RegularExpression]
[AllowHtml]
[Compare]](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/85/The-Full-Power-of-ASP-NET-Web-API-45-320.jpg)
![public class ModelValidationFilterAttribute : ActionFilterAttribute
{
public override void OnActionExecuting(HttpActionContext actionContext)
{
if (actionContext.ModelState.IsValid == false)
{
// Return the validation errors in the response body.
var errors = new Dictionary<string, IEnumerable<string>>();
foreach ( var keyValue in actionContext.ModelState )
{
errors[keyValue.Key] =
keyValue.Value.Errors.Select(e => e.ErrorMessage);
}
actionContext.Response =
actionContext
.Request
.CreateResponse(HttpStatusCode.BadRequest, errors);
}
}
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/85/The-Full-Power-of-ASP-NET-Web-API-47-320.jpg)
![public class ModelValidationFilterAttribute : ActionFilterAttribute
{
public override void OnActionExecuting(HttpActionContext actionContext)
{
if (actionContext.ModelState.IsValid == false)
{
// Return the validation errors in the response body.
var errors = new Dictionary<string, IEnumerable<string>>();
foreach ( var keyValue in actionContext.ModelState )
{
errors[keyValue.Key] =
keyValue.Value.Errors.Select(e => e.ErrorMessage);
}
actionContext.Response =
actionContext
.Request
.CreateResponse(HttpStatusCode.BadRequest, errors);
}
}
}
protected void Application_Start() {
// ...
GlobalConfiguration
.Configuration
.Filters.Add(new ModelValidationFilterAttribute());
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/85/The-Full-Power-of-ASP-NET-Web-API-48-320.jpg)
![ "opt-out" approach
"opt-in" approach
public class Product
{
public string Name { get; set; }
public decimal Price { get; set; }
[JsonIgnore]
public int ProductCode { get; set; }
}
[DataContract] public class Product
{
[DataMember] public string Name { get; set; }
[DataMember] public decimal Price { get; set; }
// omitted by default
public int ProductCode { get; set; }
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/75/The-Full-Power-of-ASP-NET-Web-API-36-2048.jpg)
![public object Get()
{
return new {
Name = "Alice",
Age = 23,
Pets = new List<string> { "Fido", "Polly", "Spot" } };
}
public void Post(JObject person)
{
string name = person["Name"].ToString();
int age = person["Age"].ToObject<int>();
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/75/The-Full-Power-of-ASP-NET-Web-API-37-2048.jpg)
![public class ProductMD
{
[StringLength(50), Required]
public string Name { get; set; }
[Range(0, 9999)]
public int Weight { get; set; }
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/75/The-Full-Power-of-ASP-NET-Web-API-44-2048.jpg)
![ [Required]
[Exclude]
[DataType]
[Range]
[MetadataTypeAttribute( typeof( Employee.EmployeeMetadata ) )]
public partial class Employee
internal sealed class EmployeeMetadata
[StringLength(60)]
[RoundtripOriginal]
public string AddressLine { get; set; }
}
}
[StringLength(60)]
[RegularExpression]
[AllowHtml]
[Compare]](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/75/The-Full-Power-of-ASP-NET-Web-API-45-2048.jpg)
![public class ModelValidationFilterAttribute : ActionFilterAttribute
{
public override void OnActionExecuting(HttpActionContext actionContext)
{
if (actionContext.ModelState.IsValid == false)
{
// Return the validation errors in the response body.
var errors = new Dictionary<string, IEnumerable<string>>();
foreach ( var keyValue in actionContext.ModelState )
{
errors[keyValue.Key] =
keyValue.Value.Errors.Select(e => e.ErrorMessage);
}
actionContext.Response =
actionContext
.Request
.CreateResponse(HttpStatusCode.BadRequest, errors);
}
}
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/75/The-Full-Power-of-ASP-NET-Web-API-47-2048.jpg)
![public class ModelValidationFilterAttribute : ActionFilterAttribute
{
public override void OnActionExecuting(HttpActionContext actionContext)
{
if (actionContext.ModelState.IsValid == false)
{
// Return the validation errors in the response body.
var errors = new Dictionary<string, IEnumerable<string>>();
foreach ( var keyValue in actionContext.ModelState )
{
errors[keyValue.Key] =
keyValue.Value.Errors.Select(e => e.ErrorMessage);
}
actionContext.Response =
actionContext
.Request
.CreateResponse(HttpStatusCode.BadRequest, errors);
}
}
}
protected void Application_Start() {
// ...
GlobalConfiguration
.Configuration
.Filters.Add(new ModelValidationFilterAttribute());
}](https://image.slidesharecdn.com/asp-netwebapi-130529230752-phpapp02/75/The-Full-Power-of-ASP-NET-Web-API-48-2048.jpg)
Uploaded byEyal Vardi
The Full Power of ASP.NET Web API
The document discusses various aspects of building RESTful web APIs with ASP.NET Web API, including content negotiation, model validation, serialization, and self-hosting. It provides code examples for adding validation filters, configuring formatters for different content types, and setting up a self-hosted API server. The document also references resources for learning more about RESTful architecture and building hypermedia-driven APIs with ASP.NET Web API.
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The Full Power of ASP.NET Web API
- 4. Browser Request Index.html MVC4 Traditional Request/ Response for ALL rendered content and assets
- 5. Initial Request Application.htm MVC4 RequireJS Loader Page1Partial.htm IndexViewModel.js Application.js (bootstrap) ViewModel (#index) ViewModel (#login) Model (LoginModel) JSON Requests HTML5 localstorage Handling disconnection
- 6. Source: www.programmableweb.com –current APIs: 4,535
- 9. POST SimpleService.asmx/EchoString HTTP/1.1 Host:localhost:1489 User-Agent: Mozilla/5.0 Accept: text/html Content-Type: application/json; Content-Length: 27 ... XML, JSON, SOAP, AtomPub ... Headers Data Verb URL
- 10. POST SimpleService.asmx/EchoString HTTP/1.1 Host:localhost:1489 User-Agent: Mozilla/5.0 Accept: text/html,application/xhtml+xml Content-Type: application/json; Content-Length: 27 ... { "Age":37, "FirstName":"Eyal", "ID":"123", "LastName":"Vardi“ } Headers Data Verb URL <Envelope> <Header> <!–- Headers --> <!-- Protocol's & Polices --> </Header> <Body> <!– XML Data --> </Body> </Envelope>
- 11. SOAP REST ODataJSON POX ??
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- 17. “An architectural stylefor building distributed hypermedia systems.”
- 18. WSDL description ofa web services types defined in <xsd:schema> simple messages parts of messages interface specification operations of an interface input message output message binding of interface to protocols & encoding description of the binding for each operation service description URI and binding to port <definitions> <types></types> <message> <part></part> </message> <portType> <operation> <input> <output> </operation> </portType> <binding> <operation> </binding> <service> <port> </service> </definitions>
- 19. ASP.NET MVC 4and the Web API: Building a REST Service from Start to Finish book
- 20. ASP.NET MVC 4and the Web API: Building a REST Service from Start to Finish book
- 21. ASP.NET MVC 4and the Web API: Building a REST Service from Start to Finish book
- 22. <?xml version="1.0" encoding="utf-8"?> <Tasks> <TaskInfoId="1234" Status="Active" > <link rel="self" href="/api/tasks/1234" method="GET" /> <link rel="users" href="/api/tasks/1234/users" method="GET" /> <link rel="history" href="/api/tasks/1234/history" method="GET" /> <link rel="complete" href="/api/tasks/1234" method="DELETE" /> <link rel="update" href="/api/tasks/1234" method="PUT" /> </TaskInfo> <TaskInfo Id="0987" Status="Completed" > <link rel="self" href="/api/tasks/0987" method="GET" /> <link rel="users" href="/api/tasks/0987/users" method="GET" /> <link rel="history" href="/api/tasks/0987/history" method="GET" /> <link rel="reopen" href="/api/tasks/0987" method="PUT" /> </TaskInfo> </Tasks> /api/tasks
- 23. ASP.NET MVC 4and the Web API: Building a REST Service from Start to Finish book
- 30. ASP.NET and WebTools 2012.2 Update Adding a simple Test Client to ASP.NET Web API Help Page
- 33. Serialization Validation DeserializationResponse Controller / Action Request HTTP/1.1200 OK Content-Length: 95267 Content-Type: text/html | application/json Accept: text/html, application/xhtml+xml, application/xml
- 34.
- 35. var json =GlobalConfiguration.Configuration.Formatters.JsonFormatter; json.UseDataContractJsonSerializer = true;
- 36. "opt-out" approach "opt-in" approach public class Product { public string Name { get; set; } public decimal Price { get; set; } [JsonIgnore] public int ProductCode { get; set; } } [DataContract] public class Product { [DataMember] public string Name { get; set; } [DataMember] public decimal Price { get; set; } // omitted by default public int ProductCode { get; set; } }
- 37. public object Get() { returnnew { Name = "Alice", Age = 23, Pets = new List<string> { "Fido", "Polly", "Spot" } }; } public void Post(JObject person) { string name = person["Name"].ToString(); int age = person["Age"].ToObject<int>(); }
- 38. var xml =GlobalConfiguration.Configuration.Formatters.XmlFormatter; xml.UseXmlSerializer = true; The XmlSerializer class supports a narrower set of types than DataContractSerializer, but gives more control over the resulting XML. Consider using XmlSerializer if you need to match an existing XML schema.
- 41. “the process ofselecting the best representation for a given response when there are multiple representations available.”
- 42. public HttpResponseMessage GetProduct(intid) { var product = new Product() { Id = id, Name = "Gizmo", Price = 1.99M }; IContentNegotiator negotiator = this.Configuration .Services.GetContentNegotiator(); ContentNegotiationResult result = negotiator.Negotiate( typeof(Product), this.Request, this.Configuration.Formatters); if (result == null) { var response = new HttpResponseMessage(HttpStatusCode.NotAcceptable); throw new HttpResponseException(response)); } return new HttpResponseMessage() { Content = new ObjectContent<Product>( product, // What we are serializing result.Formatter, // The media formatter result.MediaType.MediaType // The MIME type ) }; }
- 44. public class ProductMD { [StringLength(50),Required] public string Name { get; set; } [Range(0, 9999)] public int Weight { get; set; } }
- 45. [Required] [Exclude] [DataType] [Range] [MetadataTypeAttribute( typeof( Employee.EmployeeMetadata ) )] public partial class Employee internal sealed class EmployeeMetadata [StringLength(60)] [RoundtripOriginal] public string AddressLine { get; set; } } } [StringLength(60)] [RegularExpression] [AllowHtml] [Compare]
- 46. public class ProductsController: ApiController { public HttpResponseMessage Post(Product product) { if ( ModelState.IsValid ) { // Do something with the product (not shown). return new HttpResponseMessage(HttpStatusCode.OK); } else { return new HttpResponseMessage(HttpStatusCode.BadRequest); } } }
- 47. public class ModelValidationFilterAttribute: ActionFilterAttribute { public override void OnActionExecuting(HttpActionContext actionContext) { if (actionContext.ModelState.IsValid == false) { // Return the validation errors in the response body. var errors = new Dictionary<string, IEnumerable<string>>(); foreach ( var keyValue in actionContext.ModelState ) { errors[keyValue.Key] = keyValue.Value.Errors.Select(e => e.ErrorMessage); } actionContext.Response = actionContext .Request .CreateResponse(HttpStatusCode.BadRequest, errors); } } }
- 48. public class ModelValidationFilterAttribute: ActionFilterAttribute { public override void OnActionExecuting(HttpActionContext actionContext) { if (actionContext.ModelState.IsValid == false) { // Return the validation errors in the response body. var errors = new Dictionary<string, IEnumerable<string>>(); foreach ( var keyValue in actionContext.ModelState ) { errors[keyValue.Key] = keyValue.Value.Errors.Select(e => e.ErrorMessage); } actionContext.Response = actionContext .Request .CreateResponse(HttpStatusCode.BadRequest, errors); } } } protected void Application_Start() { // ... GlobalConfiguration .Configuration .Filters.Add(new ModelValidationFilterAttribute()); }
- 52. var config =new HttpSelfHostConfiguration("http://localhost:8080"); config.Routes.MapHttpRoute( "API Default", "api/{controller}/{id}", new { id = RouteParameter.Optional }); using (HttpSelfHostServer server = new HttpSelfHostServer(config)) { server.OpenAsync().Wait(); Console.ReadLine(); }
- 56. http://www.asp.net/web-api/ Why I’m givingREST a rest Building Hypermedia Web APIs with ASP.NET Web API
- 58.