Springboot项目启动优化方式

@Async
@EventListener(ApplicationReadyEvent.class)
public void init() {
    // 初始化代码
}

@SpringBootApplication(scanBasePackages = "com.example.specific.package")

@SpringBootApplication(exclude = {
    DataSourceAutoConfiguration.class,
    SecurityAutoConfiguration.class
})

spring:
  main:
    lazy-initialization: true
    banner-mode: off
  jmx:
    enabled: false

java -Xms2048m -Xmx2048m -XX:+UseG1GC -jar app.jar

server:
  port: 8080
  servlet:
    context-path: /api

spring:
  application:
    name: my-application

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/db_name
    username: root
    password: root
    driver-class-name: com.mysql.cj.jdbc.Driver

com.example.project
├── config/
├── controller/
├── service/
├── repository/
├── model/
└── Application.java

@ControllerAdvice
public class GlobalExceptionHandler {
    @ExceptionHandler(Exception.class)
    public ResponseEntity<String> handleException(Exception e) {
        return ResponseEntity.status(500).body(e.getMessage());
    }
}

@RestController
@RequestMapping("/api")
public class UserController {
    @GetMapping("/users/{id}")
    public ResponseEntity<User> getUser(@PathVariable Long id) {
        // 实现代码
    }
}

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

management:
  endpoints:
    web:
      exposure:
        include: "*"
  endpoint:
    health:
      show-details: always