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網上找了很多例子，看了很多資料發現都不能完全重現一個OSGi的Web Demo
本文結合了《OSGi原理與最佳實踐》+公司同事的《OSGi開發》+自己的理解。
環境WindowXP + eclipse3.4 + Spring OSGi1.2.1
1. 創建timeservice Bundle，提供輸出時間的功能
1.1 eclipse內創建Maven Project，選quickstart project：timeservice，package org.osgichina.demo.timeservice
1.2 創建好后，remove maven的jar包，刪掉project中的App和AppTest，在項目上右鍵->PDE Tools->Convert
1.3
package org.osgichina.demo.timeservice;
public interface TimeService {
String getCurrentTime();
}
public class TimeServiceImpl implements TimeService {
public String getCurrentTime() {
return (new Date()).toString();
}
}
1.4 Spring配置
配置放在META-INF/spring目錄下，框架啟動時會按照這個路徑去尋找配置文件
timeservice.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<!-- timeService bean -->
<bean name="timeService" class="org.osgichina.demo.timeservice.impl.TimeServiceImpl" />
</beans>
timeservice-osgi.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:osgi="http://www.springframework.org/schema/osgi"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd">
<!-- 將timeService 這個bean發布為OSGi服務的定義-->
<osgi:service id="osgiTimeService" ref="timeService" interface="org.osgichina.demo.timeservice.TimeService">
</osgi:service>
</beans>
這個Bundle到此已經完成了，下一節會講解helloworldweb Bundle，涉及Import Package，OSGi的啟動，Spring+Web的配置等
專注于Java，數據庫性能，Web Server負載，數據挖掘，機器學習等方向
posted on 2011-09-18 21:13
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