无法解析标准的Java进口

Question

我是一个Java新手，很新的Eclipse/OSGi的等

我想运行一个OSGi包。我已经在OSGi中安装了所有依赖的jar。 不过，虽然在OSGi控制台启动包，我收到以下错误：

org.osgi.framework.BundleException: The bundle could not be resolved. 
Reason:Missing Constraint:Require-Bundle:org.eclipse.xtext;bundle-version="0.0.0" 

标准的进口都没有解决。我该如何解决这个问题？
让我知道我是否应该发布更多信息。

osgi> diag 24 
file:///C:\Users\<user>\Desktop\RuleEngineDependency 
\org.eclipse.core.runtime_3.8.0.v20120912-155025.jar [24] 
**Missing required bundle org.eclipse.osgi_[3.7.0,4.0.0).** 
Missing required bundle org.eclipse.equinox.common_[3.6.100,4.0.0). 
Missing required bundle org.eclipse.core.jobs_[3.2.0,4.0.0). 
Missing required bundle org.eclipse.equinox.registry_[3.4.0,4.0.0). 
Missing required bundle org.eclipse.equinox.preferences_[3.4.0,4.0.0). 
Missing required bundle org.eclipse.core.contenttype_[3.3.0,4.0.0). 
Missing optionally required bundle org.eclipse.core.runtime.compatibility.auth_[3.2.0,4.0.0). 
Missing required bundle org.eclipse.equinox.app_1.0.0. 
Missing imported package org.eclipse.core.internal.runtime.auth_0.0.0. 

osgi> install file:///C:\Users\<user>\Desktop\RuleEngineDependency \org.eclipse.osgi_3.8.2.v20130124-134944.jar 
Bundle id is 25 

osgi> diag 25 
file:///C:\Users\<user>\Desktop\RuleEngineDependency\org.eclipse.osgi_3.8.2.v20130124-134944.jar [25] 
No unresolved constraints. 

osgi> diag 24 
file:///C:\Users\<user>\Desktop\RuleEngineDependency\org.eclipse.core.runtime_3.8.0.v20120912-155025.jar [24] 
**Missing required bundle org.eclipse.osgi_[3.7.0,4.0.0).** 
Missing required bundle org.eclipse.equinox.common_[3.6.100,4.0.0). 
Missing required bundle org.eclipse.core.jobs_[3.2.0,4.0.0). 
Missing required bundle org.eclipse.equinox.registry_[3.4.0,4.0.0). 
Missing required bundle org.eclipse.equinox.preferences_[3.4.0,4.0.0). 
Missing required bundle org.eclipse.core.contenttype_[3.3.0,4.0.0). 
Missing optionally required bundle org.eclipse.core.runtime.compatibility.auth_[3.2.0,4.0.0). 
Missing required bundle org.eclipse.equinox.app_1.0.0. 
Missing imported package org.eclipse.core.internal.runtime.auth_0.0.0. 

即使在添加org.eclipse.osgi包之后，它仍会列为缺少的依赖项。

Answer 1

你的包没有误解标准的java导入。捆绑包清单包含Require-Bundle指令，所以一旦部署了org.eclipse.xtext捆绑包，捆绑包将只会被resovle。由于该指令不是自动添加的，您必须手动添加它或从另一个Manifest复制。

你的包真的需要xtext吗？如果是，那么您必须将外部软件包部署到OSGi环境中。如果没有，则删除Require-Bundle头，它应该可以工作。