Java 项目启动时先加载某些方法可用于 redis 缓存预热

import lombok.extern.slf4j.Slf4j;import org.springframework.stereotype.Service;
import javax.annotation.PostConstruct;
@Slf4j@Servicepublic class FirstService {
    @PostConstruct    public void test() {        System.out.println("First-PostConstruct:开始运行...");    }

}



import lombok.extern.slf4j.Slf4j;import org.springframework.boot.CommandLineRunner;import org.springframework.stereotype.Service;
import javax.annotation.PostConstruct;
@Slf4j@Servicepublic class TwoService implements CommandLineRunner {    @Override    public void run(String... args) throws Exception {        System.out.println("Two-CommandLineRunner:开始运行...");    }}





import lombok.extern.slf4j.Slf4j;import org.springframework.boot.ApplicationArguments;import org.springframework.boot.ApplicationRunner;import org.springframework.boot.CommandLineRunner;import org.springframework.stereotype.Service;
@Slf4j@Servicepublic class ThreeService implements ApplicationRunner {
    @Override    public void run(ApplicationArguments args) throws Exception {        System.out.println("Three-ApplicationRunner:开始运行...");    }}