springboot环境搭建

（1）IDEA环境搭建

• Spring Initializr

• 选择Spring Web

• 目录结构

（2）Hello World

• 入口类Application ```java package com.monkey.springdemo;

import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication public class SpringdemoApplication {

public static void main(String[] args) {
    SpringApplication.run(SpringdemoApplication.class, args);
}

}

- 新建一个Controller
```java
package com.monkey.springdemo.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
    private static final Logger logger = LoggerFactory.getLogger(HelloController.class);
    @RequestMapping("/index")
    public String index() {
        logger.info("你好");
        return "Hello World";
    }
}

• 浏览器访问http://localhost:8080/index

（3）打包Jar

• 生成jar文件

• 部署服务

  java -jar springdemo-0.0.1-SNAPSHOT.jar