How is data transmitted in HTTP request parameters?

Data in HTTP request parameters are transmitted in several ways, depending on the request type:

1. Query parameters — added to the URL after the question mark ? and separated by an ampersand &. For example:

GET /search?query=java&sort=asc

2. Form data parameters — when sending a POST request with application/x-www-form-urlencoded type, data is transmitted in the request body as key-value pairs, for example:

username=user&password=1234

3. Parameters in the request body — for POST, PUT, and other methods, data can be transmitted in the request body in JSON, XML, or other formats, but these are not URL parameters.

4. Path parameters — part of the URL used to transmit data, for example /users/{id}.

In QA, it is important to verify the correctness of parameter transmission, their encoding, and server processing.