Unsupported Type for Query Parameters
When receiving query parameters in a URL, it is important to ensure that the data types of the parameters are supported and expected. If an unsupported type is used as a query parameter, it can lead to errors or unexpected behavior in the application.
For example, let’s say we have a simple API that retrieves information about books. The API expects a query parameter called “bookId” which should be an integer. It uses this parameter to fetch the details of a specific book from the database. However, if a non-integer value is passed as the “bookId” query parameter, it would cause issues.
Example:
Suppose we have the following API endpoint:
GET /api/books?bookId=123
This request fetches the book details for the book with the ID of 123.
Now, if an unsupported data type is used for the “bookId” query parameter, such as a string:
GET /api/books?bookId=abc
This request would result in an error or unexpected behavior, as the application expects an integer for the “bookId” parameter.
To avoid such issues, it is important to validate and parse the query parameters correctly. You can use server-side code or JavaScript frameworks to handle this. For example, in a Node.js application, you can use the “querystring” module to parse and validate the query parameters.