Features of HTTP Interceptor
- Request Modification: Interceptors can modify outgoing HTTP requests before they are sent to the server. This includes adding headers, transforming request bodies, or even cancelling requests altogether.
- Response Modification: Interceptors can also modify incoming HTTP responses before they reach the application code. This can involve transforming response data, handling errors, or adding custom logic based on the response.
- Global Applicability: Interceptors are registered at the module level and are automatically applied to all HTTP requests and responses within the application, ensuring consistent behavior across different components and services.
- Chaining: Multiple interceptors can be registered and chained together, allowing for modular and reusable code.
- Dependency Injection: Interceptors can be injected with other services or dependencies, enabling more complex logic and integration with other parts of the application.
HTTP Interceptors in Angular
In Angular, HTTP interceptors are a powerful feature that allows you to intercept and modify HTTP requests and responses at a centralized location. They act as middleware, sitting between the application’s HTTP client (typically the built-in HttpClient module) and the server.