Snippet

Dynamic Routing with @PathVariable

Use @PathVariable to extract dynamic values directly from the URL path. This is standard for RESTful APIs when identifying specific resources.

snippet.java

java

@GetMapping("/users/{id}")
public User getUser(@PathVariable("id") Long userId) {
    return userService.findById(userId);
}

spring

Breakdown

@GetMapping("/users/{id}")

Defines a GET route where {id} is a dynamic placeholder.

@PathVariable("id") Long userId

Binds the value from the URL placeholder {id} to the method parameter userId.