【SpringBoot】类中获取使用自定义配置变量

classroom.id=3
classroom.name=zhangsan

package com.bennyrhys.com.shop;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 类中获取使用自定义配置变量
 */
@RestController
public class PropertiesController {
    /**
     * 法1 @Value
     * 缺点：${classroom.id}获取配置文件内容容易写错
     * 解决：利用对象类配置
     */
    @Value("${classroom.id}")
    private Integer id;
    @Value("${classroom.name}")
    private String name;

    @GetMapping("/info")
    public String info() {
        return "id: " + id + "name: " + name;
    }
}

@Component
@ConfigurationProperties(prefix = "classroom")
public class ClassRoomConfig {
    Integer id;
    String name;
    // get set

package com.bennyrhys.com.shop;

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

@RestController
public class OppController {
    @Autowired
    ClassRoomConfig classRoomConfig;

    @GetMapping("/info2")
    public String info2() {
        return "id: " + classRoomConfig.id + "name: " + classRoomConfig.name;
    }
}