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What are the advantages of using a JSON string in the POST body as opposed to using key/value pairs in the POST body? It seems like there are a lot of API’s out there that do it.
Example of what I mean: user={“username”:”bob”, “age”:1} vs username=bob&age=1 in the POST form data.
When you use a JSON string, you just have to encode/decode your object and are ready to go. This especially useful when using multiple platforms.
Also, when you want to add new values/fields to your request, you just add it to the JSON object, instead of having to add extra validations in multiple files, possibly breaking code already works.
Another thing I can think of is that when using JSON you can code one single component with the only purpose of send/receive data, where you declare the function that will receive the decoded JSON and do whatever it wants with it. That way, you don’t repeat code and let every function/class/file/whatever do the specific functionality it’s meant to.