osgi实战学习之路:4.Bundle

</pre></h1><h1 style="margin:0 0 0 40px; border:none; padding:0px"><pre name="code" class="java">源码下载

pan.baidu.com/s/1qWmD39E

Bundle是什么?

一个Bundle能够理解为osgi的一个模块
Bundle是一个标准的jar,仅仅是在META-INF/MANIFEST.MF中增加Bundle元数据的描写叙述

Bundle元数据标识

Bundle-ManifestVersion: 2
Bundle-Name: student-model
Bundle-SymbolicName: com.demo.student-model
Bundle-Version: 0.0.1.SNAPSHOT

Export-Package

导出Bundle的某些包中的代码让其他Bundle訪问,以逗号分隔

Export-Package: org.student.model;version="0.0.1.SNAPSHOT"

Import-Package

导入其他Bundle的包中的代码,以逗号分隔

Import-Package: org.osgi.framework;version="[1.5,2)",org.student.model;v
 ersion="[0.0,1)",org.student.management;version="[0.0,1)"

demo中Bundle依赖图

demo中Manifest

student-model:

Manifest-Version: 1.0
Bnd-LastModified: 1403962466615
Build-Jdk: 1.6.0_41
Built-By: Administrator
Bundle-ManifestVersion: 2
Bundle-Name: student-model
Bundle-SymbolicName: com.demo.student-model
Bundle-Version: 0.0.1.SNAPSHOT
Created-By: Apache Maven Bundle Plugin
Export-Package: org.student.model;version="0.0.1.SNAPSHOT"
Tool: Bnd-2.1.0.20130426-122213

student-management

Manifest-Version: 1.0
Bnd-LastModified: 1403962467467
Build-Jdk: 1.6.0_41
Built-By: Administrator
Bundle-ManifestVersion: 2
Bundle-Name: student-management
Bundle-SymbolicName: com.demo.student-management
Bundle-Version: 0.0.1.SNAPSHOT
Created-By: Apache Maven Bundle Plugin
Export-Package: org.student.management;uses:="org.student.model";version
 ="0.0.1.SNAPSHOT"
Import-Package: org.student.model;version="[0.0,1)"
Tool: Bnd-2.1.0.20130426-122213

student-management-impl

Manifest-Version: 1.0
Bnd-LastModified: 1403962467667
Build-Jdk: 1.6.0_41
Built-By: Administrator
Bundle-Activator: org.student.management.impl.StudentManagementActivator
Bundle-ManifestVersion: 2
Bundle-Name: student-management-impl
Bundle-SymbolicName: com.demo.student-management-impl
Bundle-Version: 0.0.1.SNAPSHOT
Created-By: Apache Maven Bundle Plugin
Import-Package: org.osgi.framework;version="[1.5,2)",org.student.model;v
 ersion="[0.0,1)",org.student.management;version="[0.0,1)"
Tool: Bnd-2.1.0.20130426-122213

student-management-main

Manifest-Version: 1.0
Bnd-LastModified: 1403962467881
Build-Jdk: 1.6.0_41
Built-By: Administrator
Bundle-Activator: org.student.management.main.MainActivator
Bundle-ManifestVersion: 2
Bundle-Name: student-management-main
Bundle-SymbolicName: com.demo.student-management-main
Bundle-Version: 0.0.1.SNAPSHOT
Created-By: Apache Maven Bundle Plugin
Export-Package: org.student.management.main;uses:="org.osgi.framework";v
 ersion="0.0.1.SNAPSHOT"
Import-Package: org.osgi.framework;version="[1.5,2)",org.student.model;v
 ersion="[0.0,1)",org.student.management;version="[0.0,1)"
Tool: Bnd-2.1.0.20130426-122213

部署到karaf:

bundle:install wrap:mvn:com.demo/student-model/0.0.1-SNAPSHOT
bundle:start 80
bundle:install wrap:mvn:com.demo/student-management/0.0.1-SNAPSHOT
bundle:start 81
bundle:install wrap:mvn:com.demo/student-management-impl/0.0.1-SNAPSHOT
bundle:start 82
bundle:install wrap:mvn:com.demo/student-management-main/0.0.1-SNAPSHOT
bundle:start 83