【spring boot】3.spring boot项目，绑定资源文件为bean并使用

package com.sxd.secondemo;

import com.sxd.beans.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
* spring boot 的主入口类
* @RestController = @ResponseBody + @Controller
* @SpringBootApplication  spring boot的核心注解
* @EnableConfigurationProperties 激活绑定资源文件的Bean，例如这里的User.class或者更多
*/
@RestController
@SpringBootApplication
@EnableConfigurationProperties(User.class)
public class SecondemoApplication {

/**
* @Autowired  自动注入，需要@EnableConfigurationProperties中声明已经激活的Bean才能自动注入成功
*/
@Autowired
User user;

/**
* 请求地址为localhost:8080/即可访问到本方法
* @return
*/
@RequestMapping("/")
public String hello(){
/**
* idea中 System.out.println()快捷方式为sout，然后Alt+Enter才能出来
*/
System.out.println(user.getResume());

return "打印简历:"+user.getResume()+"\n"+"uu是否有值："+user.getUu();
}

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