从 Felix SCR 迁移到 OSGI Declarative Services 时，Karaf 中未列出服务

Question

我正在从 Felix SCR Annotations 迁移到 R6 OSGI Declarative Services，但是该服务没有在 karaf 中列出。按照下面的代码 SampleServiceImpl 应该列出的是 karaf 。但是它是不上市。在 pom.xml 中我还需要进行其他配置吗？

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 2 个方法，bindAgentService 和 unbindAgentService，它们没有出现在您的 class 中。您还可以将 @Reference 注释应用于字段。你想要什么？现场注入？方法注入？两个都？如果你只想要字段注入，请删除注释中的 bind 和 unbind 元素。

从 Felix SCR 迁移到 OSGI Declarative Services 时，Karaf 中未列出服务

Services are not listed in Karaf while migrating from Felix SCR to OSGI Declarative Services

osgi

declarative-services

maven

apache-felix

osgi-bundle