ABFIRST Pvt Ltd
WEB API
Introduction to Web APIs
§ Understanding Web APIs and their role in modern
applications
§ Types of web APIs: RESTful, SOAP, GraphQL
§ Benefits of RESTful Web APIs
§ Overview of HTTP methods (GET, POST, PUT, DELETE)
Building RESTful Services
§ Creating a new ASP.NET Core Web API
project
§ Understanding Controllers and Actions
§ Routing and attribute routing
§ Handling HTTP requests and responses
§ Returning different types of data (JSON,
XML)
§ Content negotiation
Working with Models and Data
§ Defining data models using Plain Old CLR Objects
(POCOs)
§ Validating input data with Data Annotations
§ Working with complex types and collections
§ Using DTOs (Data Transfer Objects)
§ Integrating Entity Framework Core for data access
Handling Requests and Responses
§ Model binding and parameter binding
§ Customizing response formats and status codes
§ Handling errors and exceptions
§ Implementing global exception handling
§ Content negotiation and media types
Routing and Versioning
§ Configuring route templates and route parameters
§ Attribute routing and route constraints
§ Versioning Web APIs (URL versioning, header
versioning, query string versioning)
§ Handling versioning through URL path and headers
Authentication and Authorization
§ Implementing authentication mechanisms (JWT, OAuth,
Basic Authentication)
§ Configuring authentication middleware
§ Securing Web APIs with authorization policies
§ Role-based and claim-based authorization
§ Implementing custom authorization handlers
Testing and Documentation
§ Unit testing Web API controllers and actions
§ Integration testing with test servers
§ Using testing frameworks (xUnit, NUnit, MSTest)
§ Generating API documentation (Swagger/OpenAPI)
§ Documenting endpoints, parameters, and response types
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