从Felix SCR迁移到OSGI声明性服务时，服务未在Karaf中列出

Question

我正在从Felix SCR注释迁移到R6 OSGI声明性服务，但该服务未在karaf中列出。根据下面的代码示例，ServiceImpl应该列出的是karaf。但它没有上市。是否有任何其他配置，我必须在pom。xml？

package com.sample.test;


import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;
import org.osgi.service.component.annotations.ReferencePolicy;
import org.osgi.service.component.annotations.ConfigurationPolicy;
import org.osgi.service.component.annotations.Deactivate;

    @Component (configurationPolicy = ConfigurationPolicy.OPTIONAL, immediate = true, service = SampleService.class)
    public class SampleServiceImpl implements SampleService
    {
    
     @Reference (policy = ReferencePolicy.DYNAMIC, service = AgentService.class , bind = "bindAgentService",unbind ="unbindAgentService")
    private AgentService agentService;
    
     
     @Activate
        protected void activate() {
            System.out.println("activate ");
        }
    
        @Deactivate
        protected void deactivate() {
            System.out.println("de-activate ");
        }
    }

这是我正在使用的pom.xml。

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <groupId>com.test.sample</groupId>
  <artifactId>compile</artifactId>
  <version>1.0.0</version>

  
  <dependencies>      
     <dependency>
       <groupId>org.osgi</groupId>
       <artifactId>osgi.cmpn</artifactId>
       <version>6.0.0</version>
       <scope>provided</scope>
    </dependency>
  </dependencies>

<build>
    <plugins>
      <plugin>
        <groupId>org.apache.felix</groupId>
        <artifactId>maven-bundle-plugin</artifactId>
      </plugin>
    </plugins>   
  </build>
</project>

Answer 1

@Reference (policy = ReferencePolicy.DYNAMIC, service = AgentService.class , bind = "bindAgentService",unbind ="unbindAgentService")

您列出了两个方法，bindAgentService和unbindAgentService，它们没有出现在您的类中。您还可以将@Reference注释应用于字段。你想要什么？现场注射？方法注射？二者都如果只需要字段注入，请删除批注中的bind和unbind元素。