@ConfigurationProperties配置参数注入

   1. pom中引入配置文件增加配置提示

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

2.properties/yml加入配置参数

zdf:
  name: test123
  age: 23
  hobby:
    game: LOL
    study: java
3.创建Zdf类

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

@Data
@Component
@ConfigurationProperties(prefix = "zdf")
public class Zdf {

    private String name;
    private Integer age;
    private Hobby hobby;
}
4.创建Hobby类

package com.zdf.order.server;

import lombok.Data;

@Data
public class Hobby {

    private String game;
    private String study;
}
5.创建测试类

import com.alibaba.fastjson.JSON;
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;

@RestController
@RequestMapping("/test")
public class ConfController {

    @Autowired
    private Zdf zdf;

    @GetMapping("/get")
    public String get(){
        return JSON.toJSONString(zdf);
    }
}

6.结果