springboot入门

1、创建Maven工程，必须继承spring-boot-stater-parent工程

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.2.RELEASE</version>
</parent>

2、编写Controller实现业务逻辑

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.Map;

@RestController
public class HelloController {
    @RequestMapping("/hello")
    public Map sayWeiWu(){
        Map map = new HashMap();
        map.put("weiwu","java");
        return map;
    }
}

3、编写启动类，添加一个main方法，添加注解@SpringBootApplication

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

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

4、启动main方法