Springboot-starter的自动配置原理-及案例实现3

3.1 以下开始测试（hello-spring-boot-starter）已经封装完毕

    第一步：创建maven工程myapp并配置pom.xml文件,这里需要导入我们刚才那个maven，注意刚才那个maven不要忘了install

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>cn.itcast</groupId>
    <artifactId>myapp</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--导入自定义starter-->
        <dependency>
            <groupId>cn.itcast</groupId>
            <artifactId>hello-spring-boot-starter</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>
</project>
~~~

第二步：创建application.yml文件

  port: 8080
hello:
  name: kevin
  address: sx

第三步：创建HelloController
```package com.laoyang.controller;

import com.laoyang.service.HelloService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**

• @author:Kevin
• @create: 2022-09-17 09:57

• @Description:
  */
  @RestController
  @RequestMapping("/hello")
  public class hellocontroller {

  @Autowired
  private HelloService helloService;

  @GetMapping("/say")
  public String sayHello(){

   return helloService.sayHello();
  

  }

}
```