Path, Query and Body — Three Ways In

A request carries data in three different places, and a controller method has a separate annotation for each.

java

@RestController
@RequestMapping("/rides")
class RideController {

    @GetMapping("/{id}")
    ResponseEntity<Ride> getRide(@PathVariable String id) { /* ... */ }

    @GetMapping
    ResponseEntity<?> list(@RequestParam(defaultValue = "all") String status) { /* ... */ }

    @PostMapping
    ResponseEntity<Ride> createRide(@RequestBody Ride ride) { /* ... */ }
}

Where each one reads from
Annotation	Reads from	Example
`@PathVariable`	A segment of the URL itself	`/rides/42` → `id = "42"`
`@RequestParam`	The query string	`/rides?status=active` → `status = "active"`
`@RequestBody`	The request body, deserialized by Jackson	A JSON object → a `Ride`

Spring Boot
REST APIs