除非我添加验证回调方法,否则我的 iPOJO 组件的注入(inject)回调不会被调用。
import javax.swing.DefaultBoundedRangeModel;
import org.apache.felix.ipojo.annotations.*;
import org.osgi.service.log.*;
@Component
@Instantiate
@Provides
public class MyBoundedRangeModel extends DefaultBoundedRangeModel {
@Requires
org.osgi.service.log.LogService logService;
@Bind
public void bindLogService(LogService logService) {
System.out.println("Binded the log service");
}
@Unbind
public void unbindLogService(LogService logService) {
System.out.println("Unbinded the log service");
}
// @Validate
// public void validate(){
// System.out.println("Validated the pdf bounded range model");
// }
}
但是当我键入命令“instances”时,OSGi 控制台会列出该组件是有效的。 有什么问题吗?
g! instances
Instance org.apache.felix.ipojo.arch.gogo.Arch-0 -> valid
Instance temp.MyBoundedRangeModel-0 -> valid
g! Instance temp.MyBoundedRangeModel-0
instance name="temp.MyBoundedRangeModel-0" state="valid" bundle="7" component.type="temp.MyBoundedRangeModel"
handler name="org.apache.felix.ipojo:requires" state="valid"
requires specification="org.osgi.service.log.LogService" id="org.osgi.service.log.LogService" optional="false" aggregate="false" proxy="true" binding-policy="dynamic" state="resolved"
selected service.id="22"
matches service.id="22"
requires specification="org.osgi.service.log.LogService" id="LogService" optional="false" aggregate="false" proxy="true" binding-policy="dynamic" state="resolved"
selected service.id="22"
matches service.id="22"
handler name="org.apache.felix.ipojo:provides" state="valid"
provides specifications="[javax.swing.BoundedRangeModel,java.io.Serializable]" state="registered" service.id="51"
property name="instance.name" value="temp.MyBoundedRangeModel-0"
property name="factory.name" value="temp.MyBoundedRangeModel"
handler name="org.apache.felix.ipojo:architecture" state="valid"
最佳答案
@Bind 回调将在创建对象时调用(当需要时,因此在您的情况下是第一次使用已发布的服务)。
无需添加@Validate 回调,并且仅当您需要提前创建对象时,才使用:
@Component(immediate=true)
关于java - 除非添加验证返回,否则不会调用 iPOJO 组件注入(inject)回调,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25257355/