如何解决由于 karaf 中违反使用限制,捆绑包未得到解决
如何克服这种链依赖问题。?
Error executing command: Error executing command on bundles:
Error starting bundle 429: Could not resolve module: com.sample.eventhistory [429]
Bundle was not resolved because of a uses contraint violation.
org.osgi.service.resolver.ResolutionException: Uses constraint violation. Unable to resolve resource com.sample.eventhistory [osgi.identity; osgi.identity="com.sample.eventhistory"; type="osgi.bundle"; version:Version="1.90.0.SNAPSHOT"] because it exports package 'com.sample.restenquiry.exceptions' and is also exposed to it from resource com.sample.eventhistory [osgi.identity; osgi.identity="com.sample.eventhistory"; type="osgi.bundle"; version:Version="1.90.0.SNAPSHOT"] via the following dependency chain:
com.sample.eventhistory [osgi.identity; osgi.identity="com.sample.eventhistory"; type="osgi.bundle"; version:Version="1.90.0.SNAPSHOT"]
import: (osgi.wiring.package=com.sample.restutil.impl)
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export: osgi.wiring.package=com.sample.restutil.impl; uses:=com.sample.restservice
rest [osgi.identity; osgi.identity="edmexporest"; type="osgi.bundle"; version:Version="1.90.0.SNAPSHOT"]
import: (&(osgi.wiring.package=com.sample.restservice)(&(version>=1.90.0)(!(version>=2.0.0))))
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export: osgi.wiring.package: com.sample.restservice; uses:=com.sample.restenquiry.exceptions
export: osgi.wiring.package=com.sample.restenquiry.exceptions
com.sample.eventhistory [osgi.identity; osgi.identity="com.sample.eventhistory"; type="osgi.bundle"; version:Version="1.90.0.SNAPSHOT"]
虽然部署捆绑服务没有出现。而是在 karaf 控制台中出现上述错误
解决方法
OSGi 允许导出相同的包——只要版本号不同。在这种情况下,您有两个包导出相同的包+版本。
一个好的做法是将接口和异常放在一个bundle中(即service-api),然后消费者bundle和提供者bundle都可以导入这些包,但不需要让消费者直接依赖提供者.
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