Java框架spring Boot学习笔记（一）：开始第一个项目

新建一个项目，选择Spring initializr

修改group和项目名

添加依赖包Web,MongoDB

设置保存位置和工程名

新建一个test的文件

输入代码：

 package com.xxx.test.spider;

 import org.springframework.stereotype.Service;

 import javax.annotation.PostConstruct;
 import java.util.Date;

 import static java.lang.Thread.*;

 //如果一个类带了@Service注解，将自动注册到Spring容器
 @Service
 public class test {
     //启动spring时运行这个方法
     @PostConstruct
     public void fun(){
         while (true){
             try {
                 Thread.sleep(1000); //每隔1秒
             } catch (InterruptedException e) {
                 e.printStackTrace();
             }
             System.out.println(new Date()); //打印当前时间
         }
     }
 }

运行输出：

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.8.RELEASE)

2017-10-30 15:33:23.583  INFO 8108 --- [           main] com.xxx.test.TestApplication             : Starting TestApplication on CXYF-100-049 with PID 8108 (D:\IdeaProjects\x\test\target\classes started by jacky.jiang in D:\IdeaProjects\x\test)
2017-10-30 15:33:23.585  INFO 8108 --- [           main] com.xxx.test.TestApplication             : No active profile set, falling back to default profiles: default
2017-10-30 15:33:23.621  INFO 8108 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@6dde5c8c: startup date [Mon Oct 30 15:33:23 CST 2017]; root of context hierarchy
Mon Oct 30 15:33:24 CST 2017
Mon Oct 30 15:33:25 CST 2017
Mon Oct 30 15:33:26 CST 2017