Ubuntu 20.04安装fcrepo-service-activemq Karaf Feature报错求解决

问题场景 #

在Ubuntu 20.04系统中执行以下命令安装Karaf Feature：

/opt/karaf/bin/client feature:install fcrepo-service-activemq

触发以下错误：

Error executing command: Unable to resolve root: missing requirement [root] osgi.identity; osgi.identity=fcrepo-service-activemq; type=karaf.feature; version="[5.0.0,5.0.0]"; filter="(&amp;(osgi.identity=fcrepo-service-activemq)(type=karaf.feature)(version>=5.0.0)(version<=5.0.0))" [caused by: Unable to resolve fcrepo-service-activemq/5.0.0: missing requirement [fcrepo-service-activemq/5.0.0] osgi.identity; osgi.identity=activemq-camel; type=karaf.feature; version="[5.14.0,6.0.0)" [caused by: Unable to resolve activemq-camel/5.15.11: missing requirement [activemq-camel/5.15.11] osgi.identity; osgi.identity=org.apache.activemq.activemq-camel; type=osgi.bundle; version="[5.15.11,5.15.11]"; resolution:=mandatory [caused by: Unable to resolve org.apache.activemq.activemq-camel/5.15.11: missing requirement [org.apache.activemq.activemq-camel/5.15.11] osgi.wiring.package; filter="(&amp;(osgi.wiring.package=org.springframework.jms.connection)(version>=4.0.0)(!(version>=6.0.0)))"]]]

错误核心：activemq-camel/5.15.11依赖的org.springframework.jms.connection包（版本范围4.0.0~6.0.0）缺失。

解决步骤 #

1. 安装Spring JMS Feature #

先手动补装缺失的Spring JMS相关依赖：

/opt/karaf/bin/client feature:install spring-jms

2. 预安装指定版本的activemq-camel #

按照错误提示的版本要求，先安装activemq-camel/5.15.11：

/opt/karaf/bin/client feature:install activemq-camel/5.15.11

如果这一步仍提示Spring版本不兼容，可指定安装兼容的Spring 4.x版本Feature：

/opt/karaf/bin/client feature:install spring/4.3.30.RELEASE

3. 重新安装目标Feature #

完成依赖补全后，再次执行原安装命令：

/opt/karaf/bin/client feature:install fcrepo-service-activemq

4. 备选：添加缺失的Karaf仓库 #

若上述步骤仍无法获取依赖，添加ActiveMQ和Spring的官方Karaf仓库：

/opt/karaf/bin/client repo-add activemq https://repository.apache.org/content/groups/snapshots-group/org/apache/activemq/activemq-karaf/5.15.11/
/opt/karaf/bin/client repo-add spring https://repo.spring.io/release/org/springframework/karaf/spring-karaf/4.3.30.RELEASE/

添加后重新执行安装命令即可。

内容的提问来源于stack exchange，提问作者Frazer Nyambe