SpringBoot中配置常量注解@ConfigurationProperties的基本使用

1. 导入依赖

           <!--配置处理器-->
   <dependency>
   	<groupId>org.springframework.boot</groupId>
   	<artifactId>spring-boot-configuration-processor</artifactId>
   	<optional>true</optional>
   </dependency>
   

2. 创建bean

   @Data
   @AllArgsConstructor
   @NoArgsConstructor
   public class TestConfig {
       private String id;
       private String name;
   }
   

3. 入口函数上加@EnableConfigurationProperties({TestConfig.class})

   @EnableConfigurationProperties({TestConfig.class})
   @SpringBootApplication
   public class Demo1Application {
       public static void main(String[] args) {
           ConfigurableApplicationContext run = SpringApplication.run(Demo1Application.class, args);
       }
   }
   

4. application.yaml写入：

   testconfig:
     id: 1
     name: aaa
   

5. 在bean上加@ConfigurationProperties(prefix = “testconfig”)

   @Data
   @AllArgsConstructor
   @NoArgsConstructor
   @ConfigurationProperties(prefix = "testconfig")
   public class TestConfig {
       private String id;
       private String name;
   
   }
   

6. 自动注入此对象

   @Autowired
   private TestConfig testConfig;