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JavaIntermediate#spring

What is the difference between @RequestParam, @PathVariable, and @RequestBody?

@RequestParam extracts query string parameters, @PathVariable extracts values embedded in the URL path, and @RequestBody deserializes the HTTP request body (typically JSON) into a Java object.

Example
@GetMapping("/users/{id}")
User getUser(@PathVariable Long id, @RequestParam(required=false) String filter) { ... }
@PostMapping("/users")
User create(@RequestBody User user) { ... }

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