我已尝试过此link的组件工厂示例。 接口:
package com.java.examplefactoryservice;
public interface ExampleFactoryService {
public void start();
public void stop();
}
工厂提供商:
package com.java.examplecomponentfactoryserviceprovider;
import java.util.Map;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import com.java.examplefactoryservice.ExampleFactoryService;
@Component(name = "ExampleComponentFactoryServiceProvider", factory = "example.factory.provider")
public class ExampleComponentFactoryServiceProvider implements ExampleFactoryService {
@Activate
public void activate(Map<String, Object> properties) {
System.out.println("Actiavted!!!");
}
@Override
public void start() {
System.out.println("Started !!!!");
}
@Override
public void stop() {
System.out.println("Stopped!!!");
}
}
工厂经理:
package com.java.examplecomponentfatorymanager;
import java.util.Map;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Reference;
import org.osgi.service.component.ComponentFactory;
import org.osgi.service.component.ComponentInstance;
import com.java.examplefactoryservice.ExampleFactoryService;
@Component(name = "ExampleComponentFactoryManager", enabled = true, immediate = true)
public class ExampleComponentFactoryManager {
@Reference(target = "(component.factory=example.factory.provider)", bind = "setFactory", unbind = "unsetFactory")
private ComponentFactory factory;
private ComponentInstance instance;
private ExampleFactoryService service;
@Activate
public void activate(Map<String, Object> properties) {
System.out.println("activate in manager !!!!");
instance = factory.newInstance(null);
service = (ExampleFactoryService) instance.getInstance();
System.out.println("service = " + service.toString());
}
public void setFactory(final ComponentFactory factory) {
this.factory = factory;
System.out.println("setfactory called");
}
public void unsetFactory(ComponentFactory factory) {
this.factory = null;
System.out.println("Unset factory called");
}
}
编译好的一切并安装在karaf 2.3.10中。工厂注册成功。但没有显示任何内容。
karaf输出:
[ 71] [Active ] [ ] [ 80] osgi.cmpn (4.3.1.201210102024)
[ 79] [Active ] [ ] [ 80] testI (0.0.1.SNAPSHOT)
[ 80] [Active ] [ ] [ 80] testImpl (0.0.3.SNAPSHOT)
[ 110] [Active ] [ ] [ 80] Apache Felix Declarative Services (1.6.0)
[ 140] [Active ] [ ] [ 80] ExampleFactoryService (0.0.1.SNAPSHOT)
[ 152] [Active ] [ ] [ 80] ExampleComponentFactoryServiceProvider (0.0.1.SNAPSHOT)
[ 158] [Active ] [ ] [ 80] ExampleComponentFatoryManager (0.0.1.SNAPSHOT)
scr:list output
[9 ] [FACTORY ] ExampleComponentFactoryServiceProvider
SCR:细节
scr:deactivate scr:details
karaf@root> scr:details ExampleComponentFactoryServiceProvider
Component Details
Name : ExampleComponentFactoryServiceProvider
State : FACTORY
Properties :
service.vendor=The Apache Software Foundation
component.factory=example.factory.provider
component.name=ExampleComponentFactoryServiceProvider
References
的pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>ExampleComponentFatoryManager</groupId>
<artifactId>ExampleComponentFatoryManager</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<extensions>true</extensions>
<version>2.3.5</version>
<configuration>
<instructions>
<Import-Package>
*,
javax.servlet*;version="[2.5,4)"
</Import-Package>
</instructions>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-scr-plugin</artifactId>
<version>1.14.0</version>
<executions>
<execution>
<id>generate-scr-scrdescriptor</id>
<goals>
<goal>scr</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>org.apache.felix.scr.annotations</artifactId>
<version>1.9.6</version>
</dependency>
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>org.osgi.compendium</artifactId>
<version>1.4.0</version>
</dependency>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>org.osgi.core</artifactId>
<version>4.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>ExampleFactoryService</groupId>
<artifactId>ExampleFactoryService</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
最初我尝试在karaf命令行中安装捆绑而不是名称,它显示捆绑的绝对路径。一段时间后,我尝试将bundle放入deploy中,它显示了bundle的确切名称。 我没有理解karaf为什么在进行适当的命令行安装时没有显示包名称的行为。而且它根本没有显示任何错误[dependency / compilation / wiredexecption]。任何人都可以告诉我包中有什么问题吗?
答案 0 :(得分:0)
您可以转而导入aQute.bnd.annotation 导入karaf的org.apache.felix.scr.annotations。
参考下面的代码
@Component(name="ExampleComponentFactoryManager",immediate=true,enabled=true)
public class ExampleComponentFactoryManager
{
private static final Logger LOG = LoggerFactory.getLogger(ExampleComponentFactoryManager.class);
private ComponentFactory factory;
// @Reference(target = "(component.factory=example.factory.provider)",unbind = "unsetFactory")
//private ComponentFactory factory;
private ComponentInstance instance;
private ExampleFactoryService service;
@Activate
public void activate(Map<String, Object> properties) {
LOG.info("activation factorymanager");
instance=factory.newInstance(null);
service =(ExampleFactoryService)instance.getInstance();
LOG.info("service instance from factory "+service.toString());
}
@Reference(target = "(component.factory=example.factory.provider)",unbind = "unsetFactory")
public void setFactory(final ComponentFactory factory) {
LOG.info("set Factory");
this.factory = factory;
System.out.println("setfactory called");
}
public void unsetFactory(ComponentFactory factory) {
this.factory = null;
System.out.println("Unset factory called");
}
}