springboot在yml配置文件中配置类的属性笔记

首先建立一个简单的实体类，我这里以学生为例，并加上@Component和@ConfigurationProperties(prefix ="student")注解，其中prefix ="student"对应yml文件中的student

package com.example.demomybatis.model;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

import java.util.Map;
@Component//将此javaBean加入到spring容器中
@ConfigurationProperties(prefix ="student")
public class Student {
    private String name;
    private Map<String,Object> location;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Map<String, Object> getLocation() {
        return location;
    }

    public void setLocation(Map<String, Object> location) {
        this.location = location;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", location=" + location +
                '}';
    }
}

然后在yml文件中对student属性进行配置

student:
  name: yyy
  location: {province: 浙江}//map类型配置写法

此外，要在pom.xml中加入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
    <optional>true</optional>
</dependency>