Build production Spring Boot applications - REST APIs, Security, Data, Actuator
Build production Spring Boot applications with REST APIs, security, data access, and Actuator monitoring. Use when creating Spring Boot projects, configuring security (OAuth2/JWT), setting up JPA repositories, or implementing monitoring endpoints.
/plugin marketplace add pluginagentmarketplace/custom-plugin-java/plugin install pluginagentmarketplace-java-development-assistant@pluginagentmarketplace/custom-plugin-javaThis skill is limited to using the following tools:
assets/config.yamlassets/schema.jsonreferences/GUIDE.mdreferences/PATTERNS.mdscripts/validate.pyBuild production-ready Spring Boot applications with modern best practices.
This skill covers Spring Boot development including REST APIs, security configuration, data access, actuator monitoring, and cloud integration. Follows Spring Boot 3.x patterns with emphasis on production readiness.
Use when you need to:
// REST Controller
@RestController
@RequestMapping("/api/users")
@Validated
public class UserController {
@GetMapping("/{id}")
public ResponseEntity<User> getUser(@PathVariable Long id) {
return userService.findById(id)
.map(ResponseEntity::ok)
.orElse(ResponseEntity.notFound().build());
}
@PostMapping
public ResponseEntity<User> createUser(@Valid @RequestBody UserRequest request) {
User user = userService.create(request);
URI location = URI.create("/api/users/" + user.getId());
return ResponseEntity.created(location).body(user);
}
}
// Security Configuration
@Configuration
@EnableWebSecurity
public class SecurityConfig {
@Bean
public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
return http
.csrf(csrf -> csrf.disable())
.sessionManagement(s -> s.sessionCreationPolicy(STATELESS))
.authorizeHttpRequests(auth -> auth
.requestMatchers("/actuator/health/**").permitAll()
.requestMatchers("/api/public/**").permitAll()
.anyRequest().authenticated())
.oauth2ResourceServer(oauth2 -> oauth2.jwt(Customizer.withDefaults()))
.build();
}
}
// Exception Handler
@RestControllerAdvice
public class GlobalExceptionHandler {
@ExceptionHandler(EntityNotFoundException.class)
public ProblemDetail handleNotFound(EntityNotFoundException ex) {
return ProblemDetail.forStatusAndDetail(NOT_FOUND, ex.getMessage());
}
}
# application.yml
spring:
application:
name: ${APP_NAME:my-service}
profiles:
active: ${SPRING_PROFILES_ACTIVE:local}
jpa:
open-in-view: false
properties:
hibernate:
jdbc.batch_size: 50
management:
endpoints:
web:
exposure:
include: health,info,metrics,prometheus
endpoint:
health:
probes:
enabled: true
server:
error:
include-stacktrace: never
Controller → Service → Repository → Database
↓ ↓ ↓
DTOs Entities Entities
public record CreateUserRequest(
@NotBlank @Size(max = 100) String name,
@Email @NotBlank String email,
@NotNull @Min(18) Integer age
) {}
| Problem | Cause | Solution |
|---|---|---|
| Bean not found | Missing @Component | Add annotation or @Bean |
| Circular dependency | Constructor injection | Use @Lazy or refactor |
| 401 Unauthorized | Security config | Check permitAll paths |
| Slow startup | Heavy auto-config | Exclude unused starters |
debug=true
logging.level.org.springframework.security=DEBUG
spring.jpa.show-sql=true
□ Check /actuator/conditions
□ Verify active profiles
□ Review security filter chain
□ Check bean definitions
□ Test health endpoints
Skill("java-spring-boot")
java-testing - Spring test patternsjava-jpa-hibernate - Data accessThis skill should be used when the user asks to "create an agent", "add an agent", "write a subagent", "agent frontmatter", "when to use description", "agent examples", "agent tools", "agent colors", "autonomous agent", or needs guidance on agent structure, system prompts, triggering conditions, or agent development best practices for Claude Code plugins.
This skill should be used when the user asks to "create a slash command", "add a command", "write a custom command", "define command arguments", "use command frontmatter", "organize commands", "create command with file references", "interactive command", "use AskUserQuestion in command", or needs guidance on slash command structure, YAML frontmatter fields, dynamic arguments, bash execution in commands, user interaction patterns, or command development best practices for Claude Code.
This skill should be used when the user asks to "create a hook", "add a PreToolUse/PostToolUse/Stop hook", "validate tool use", "implement prompt-based hooks", "use ${CLAUDE_PLUGIN_ROOT}", "set up event-driven automation", "block dangerous commands", or mentions hook events (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, SessionEnd, UserPromptSubmit, PreCompact, Notification). Provides comprehensive guidance for creating and implementing Claude Code plugin hooks with focus on advanced prompt-based hooks API.