##關於@value的springapplication容器的問題
1.在src/main/resources下創建stu.properties文件
##
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
2.創建實體類
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
}
3.錯誤的方法
@RestController
public class StudentController {
@RequestMapping("/getStu")
public Student getStu() {
Student stu=new Student();
System.out.println(stu);
return stu;
}
}
4.###效果如圖
5.正確的方法爲
**總結:從上面方法得知,第一種方法沒有獲取到值是因爲沒有在springapplication容器裏獲取student的bean,因爲在實體類加上了@comment註解,這個註解就是把student變成一個bean,才能讀取到,不能new 一個對象調用
**
[如有遇到springboot掃描不到controller請點擊鏈接,如果你感覺解決方式可以的話,請點個贊。(https://blog.csdn.net/qq_42274641/article/details/83063350)