nacos中的配置使用@Value注解获取不到值

<dependencyManagement> <dependencies> <dependency> <groupId></groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>2021.0.3</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId></groupId> <artifactId>spring-cloud-alibaba-dependencies</artifactId> <version>2.2.</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <dependencies> <dependency> <groupId></groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId></groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency> <dependency> <groupId></groupId> <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId> </dependency> <dependency> <groupId></groupId> <artifactId>spring-cloud-starter-bootstrap</artifactId> </dependency> </dependencies>