Skip to content

spring-springboot.md

Latest commit

 

History

History
41 lines (36 loc) · 1.03 KB

spring-springboot.md

File metadata and controls

41 lines (36 loc) · 1.03 KB

Spring and Spring Boot (Study Guide + Examples)

Contents

  • Inversion of Control (IoC) and Dependency Injection (DI)
  • Bean scopes and lifecycle
  • Configuration styles (XML, Java Config, Component Scan)
  • Stereotypes: @Component, @Service, @Repository, @Controller
  • @Configuration, @Bean, @Profile
  • Spring Boot starters and auto-configuration
  • Externalized configuration (properties/yaml), profiles
  • REST controllers and validation
  • Exception handling (@ControllerAdvice)
  • Data access with Spring Data JPA
  • Caching (Redis)
  • Actuator endpoints and security
  • Testing with Spring Boot

IoC and DI

@Configuration
class AppConfig {
    @Bean Foo foo(Bar bar){ return new Foo(bar); }
}

REST Example

@RestController
@RequestMapping("/api/v1/users")
class UserController {
    private final UserService svc;
    UserController(UserService svc){ this.svc = svc; }

    @GetMapping("/{id}")
    public ResponseEntity<UserDto> get(@PathVariable Long id){
        return ResponseEntity.ok(svc.find(id));
    }
}