Spring Boot 自定義配置文件異常"expected single matching bean but found 2"

運行環境：Spring Boot 2.5.0, IDEA 2020.3.2

異常詳細信息：

Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type 'com.example.demo.config.MyConfigProperties' 
available: expected single matching bean but found 2: myConfigProperties,test-com.example.demo.config.MyConfigProperties

一開始是這樣寫的

@Configuration
@PropertySource("classpath:myConfig.properties")
@ConfigurationProperties(prefix = "test")
@Component
@Data
public class MyConfigProperties {
    private String name;
    private int age;
}

@SpringBootApplication
@EnableConfigurationProperties(MyConfigProperties.class)
public class DemoApplication {

	public static void main(String[] args) {

		SpringApplication.run(DemoApplication.class, args);
	}

}

@RestController
public class IndexController {
    @Resource
    private  MyConfigProperties myConfig;

    @RequestMapping("/config")
    String customConfig() {
        String name = myConfig.getName();
        return  name + myConfig.getAge();
    }
}

 

然后，運行的時候就報了上面那個錯。

 

解決方案是刪除入口類上的 

@EnableConfigurationProperties(MyConfigProperties.class)