Angular Interceptor

Angular interceptor: two implementation methods and application scenarios

This article introduces Angular interceptor, including class -based interceptors (using

) and function -based interceptors (using withInterceptorsFromDi), and explain its modification requests, processing response, global error handling and request logs Record application. withInterceptors

Core function:

Add licensed token:

Add licensed token to the security API.
• Modify the request or response: Add head information and convert data.
• Automatic processing error: Display error information when the request fails.
Request log records:
• track all HTTP requests for easy debugging.
The type of interceptor comparison:
Function -based interceptor:

Simple lightweight.

Class -based interceptor: The function is more powerful and easier to expand.

• Which interceptor depends on the complexity and needs of the project. For simple scenarios, the interceptor of the function is sufficient; and for more complex scenarios, the interceptor -based interceptor is more flexible and maintained.

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