Springboot two ways to obtain the value in the configuration file Value annotation and the use of ConfigurationProperties annotation

First, use the controller code for the value annotation

package com.quan.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.quan.service.HuaweiService;
import com.quan.service.HuaweiService2;

/**
 * @author yangquan
 */

@RestController
@RequestMapping("/controller")
public class HuaweiController {

    @Autowired
    private HuaweiService huaweiService;
    @Autowired
    private HuaweiService2 huaweiService2;

    @RequestMapping("/test")
    public void test(){
        huaweiService.test();
    }

    @RequestMapping("/test2")
    public void test2(){
        huaweiService2.test();
    }
}

service code

package com.quan.service.impl;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Service;

import com.quan.service.HuaweiService;

// @ConfigurationProperties(
//     prefix = "huawei"
// )
@Service
public class HuaweiServiceImpl implements HuaweiService {

    /**用户在华为开发者联盟申请Push服务获取的服务参数*/
    // private static  String appId = "12345678";
    @Value("${huawei.app-id}")
    private String appId;
    /**用户在华为开发者联盟申请Push服务获取的服务参数*/
    // private static String appSecret = "appSecret";
    @Value("${huawei.app-secret}")
    private String appSecret;

    @Override
    public void test() {
        System.out.println(appId+"  "+appSecret);
    }
}

Second, the use of service code for ConfigurationProperties annotations

package com.quan.service.impl;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Service;

import com.quan.service.HuaweiService;
import com.quan.service.HuaweiService2;

import lombok.Data;

/**
 * @author yangquan
 */
@Data
// @Configuration
@ConfigurationProperties(prefix="hw")
@Service
public class HuaweiServiceImpl2 implements HuaweiService2 {

    /**用户在华为开发者联盟申请Push服务获取的服务参数*/
    // private static  String appId = "12345678";
    private String appId;
    /**用户在华为开发者联盟申请Push服务获取的服务参数*/
    // private static String appSecret = "appSecret";
    private String appSecret;


    @Override
    public void test() {
        System.out.println(appId+"  "+appSecret);
    }
}

yml configuration file

server:
  port: 8802

huawei:
  app-id: 123
  app-secret: 123
hw:
  app-id: 234
  app-secret: 234

Request path

http://localhost:8802/controller/test2
http://localhost:8802/controller/test2

Running results There is

a saying on the Internet that using the annotation of ConfigurationProperties needs to add the following dependencies

 <!-- 支持 @ConfigurationProperties 注解 -->
        <!--<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>-->

I haven't added it here, but I can get the value in the configuration file. Everyone can decide for themselves

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In this life, persistence or non-persistence is not terrible, what is afraid is to walk alone on the road of persistence! ! !