解决SpringBoot @value注解取不到值的问题

##
student.name=Tom
student.age=22
student.birthday=1996/01/10
student.sex=true
student.hobbies[0]=swimming
student.hobbies[1]=basketball
student.skills[0]=programming
student.skills[1]=test
student.address.province=henan
student.address.city=zhengzhou

package com.fcy.entity;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;
@Component
@PropertySource({"classpath:stu.properties"})
public class Student {
  @Value("${student.name}")
  private String name;
  @Value("${student.age}")
  private int age;
  @Value("${student.sex}")
  private boolean sex;
  @Value("${student.birthday}")
  private Date birthday;
  private String[] hobbies;
  private List<String> skills;
  private Map<String, Object> address;
 //省略getter和setter方法
}

@RestController
public class StudentController {
 @RequestMapping("/getStu")
 public Student getStu() {
  Student stu=new Student();
  System.out.println(stu);
  return stu;
 }
}