AEM 6.3 - 使用OSGi R6注释创建事件处理程序

Question

我已经按照 https://github.com/nateyolles/aem-osgi-annotation-demo/blob/master/core/src/main/java/com/nateyolles/aem/osgiannotationdemo/core/listeners/SampleOsgiResourceListener.java 创建了一个事件处理程序，它工作正常。但是，我收到警告"字段SlingConstants.TOPIC_RESOURCE_ADDED已弃用"。我做了一些搜索，找到了这个线程：https://forums.adobe.com/thread/2325819

以下是我面临的挑战：

1） 我想为我的事件处理程序创建一个单独的配置接口。我试过这个，但它不起作用

package com.aem.sites.interfaces;
import org.apache.sling.api.SlingConstants;
import org.osgi.service.event.EventConstants;
import org.osgi.service.metatype.annotations.AttributeDefinition;
import org.osgi.service.metatype.annotations.AttributeType;
import org.osgi.service.metatype.annotations.ObjectClassDefinition;
@ObjectClassDefinition(name = "Temperature Listener Configuration")
public @interface TemperatureListenerConfiguration {
    @AttributeDefinition(
            name = EventConstants.EVENT_FILTER,
            description = "Configurable paths for temperature event listener",
            type = AttributeType.STRING
            )
    String getPaths() default "/content/aemsite/en/jcr:content/root/responsivegrid/banner";
    @AttributeDefinition(
            name = EventConstants.EVENT_TOPIC,
            description = "Event types",
            type = AttributeType.STRING
            )
    String[] getEventTypes() default  {SlingConstants.TOPIC_RESOURCE_ADDED,SlingConstants.TOPIC_RESOURCE_CHANGED, SlingConstants.TOPIC_RESOURCE_REMOVED};
}
package com.aem.sites.listeners;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Modified;
import org.osgi.service.event.Event;
import org.osgi.service.event.EventHandler;
import org.osgi.service.metatype.annotations.Designate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.aem.sites.interfaces.TemperatureListenerConfiguration;
@Component(immediate=true,
service=EventHandler.class,
configurationPid = "com.aem.sites.listeners.EventHandler")
@Designate(ocd=TemperatureListenerConfiguration.class)
public class TemperaturePropertyListener implements EventHandler{
     private final Logger logger = LoggerFactory.getLogger(getClass());
    @Override
    public void handleEvent(Event event) {
        logger.info("*********************Event handler*****************************");
    }
    @Activate
    @Modified
    public void activate(TemperatureListenerConfiguration config) {
        //config.getPaths();
        logger.info("**************************TemperaturePropertyListener******************activate**********************");
    }
}

我还想要SlingConstants弃用问题的解决方案。不确定 ResourceChangeListener 是否是我问题的答案，如果是，那么所有内容将在代码中协同工作。

提前致谢

=====================================

最新代码

package com.aem.sites.listeners;
import java.util.List;
import org.apache.sling.api.resource.observation.ResourceChange;
import org.apache.sling.api.resource.observation.ResourceChangeListener;
import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Modified;
import org.osgi.service.metatype.annotations.Designate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.aem.sites.interfaces.TemperatureListenerConfiguration;

@Component(immediate=true,
service=ResourceChangeListener.class,
configurationPid = "com.aem.sites.listeners.TemperaturePropertyListener")
@Designate(ocd=TemperatureListenerConfiguration.class)
public class TemperaturePropertyListener implements ResourceChangeListener{
     private final Logger logger = LoggerFactory.getLogger(getClass());
    @Override
    public void onChange(List<ResourceChange> changes) {
        for (final ResourceChange change : changes) {
            logger.info("**************************TemperaturePropertyListener******************change type**********************"+change.getType());
        }
    }

    @Activate
    @Modified
    public void activate(TemperatureListenerConfiguration config) {
        //config.getPaths();
        logger.info("**************************TemperaturePropertyListener******************activate**********************");
    }
}

界面

package com.aem.sites.interfaces;
import org.apache.sling.api.resource.observation.ResourceChangeListener;
import org.osgi.service.metatype.annotations.AttributeDefinition;
import org.osgi.service.metatype.annotations.AttributeType;
import org.osgi.service.metatype.annotations.ObjectClassDefinition;
@ObjectClassDefinition(name = "Temperature Listener Configuration")
public @interface TemperatureListenerConfiguration {
    @AttributeDefinition(
            name = ResourceChangeListener.PATHS,
            description = "Configurable paths for temperature event listener",
            type = AttributeType.STRING
            )
    String[] getPaths() default {"/content/aemsite/en/jcr:content/root/responsivegrid/banner"};
    @AttributeDefinition(
            name = ResourceChangeListener.CHANGES,
            description = "Event types",
            type = AttributeType.STRING
            )
    String[] getEventTypes() default  {"ADDED","REMOVED","CHANGED","PROVIDER_ADDED", "PROVIDER_REMOVED"};
}

Answer 1

查看 Javadoc 以了解 sling 9 文档中的org.apache.sling.api.SlingConstants：http://sling.apache.org/apidocs/sling9/org/apache/sling/api/SlingConstants.html

它明确告诉您TOPIC_RESOURCE_ADDED已被弃用：

荒废的。改为注册 ResourceChangeListener

阅读 ResourceChangeListener 的文档，此外，还可以查看 ACS 示例中的示例 SCR 服务：

将其转换为 R6 声明性服务应该不难。

此外，这里有两个来自吊索项目ResourceBackedPojoChangeMonitor和OsgiObservationBridge的例子

。

尝试使用同一类中的属性来模拟这些类。