WELD-001519 为抽象类“xxx”创建 InjectionTarget 实现。不可能产生这种类型的实例

我正在以下环境中运行应用程序。

• GlassFish 服务器 4.0
• 莫贾拉2.2.4
• PrimeFaces 4.0 最终版
• PrimeFaces 扩展 1.1.0
• OmniFaces 1.6.3

添加OmniFaces后，服务器终端上出现以下警告。

WARNING:   WELD-001519 An InjectionTarget implementation is created for an abstract class org.omnifaces.eventlistener.DefaultServletContextListener. It will not be possible to produce instances of this type!    
WARNING:   WELD-001519 An InjectionTarget implementation is created for an abstract class org.omnifaces.filter.HttpFilter. It will not be possible to produce instances of this type!

//WARNING:   Class 'javax.ejb.PostActivate' not found, interception based on it is not enabled
//WARNING:   Class 'javax.ejb.PrePassivate' not found, interception based on it is not enabled
INFO:   Initializing Mojarra 2.2.4 ( 20131003-1354 https://svn.java.net/svn/mojarra~svn/tags/2.2.4@12574) for context '/Project-war'

WARNING:   WELD-001529 An InjectionTarget implementation is created for a class org.omnifaces.application.OmniApplicationFactory which does not have any appropriate constructor.
WARNING:   WELD-001529 An InjectionTarget implementation is created for a class org.primefaces.context.PrimeFacesContextFactory which does not have any appropriate constructor.
WARNING:   WELD-001529 An InjectionTarget implementation is created for a class org.omnifaces.context.OmniPartialViewContextFactory which does not have any appropriate constructor.
WARNING:   WELD-001529 An InjectionTarget implementation is created for a class org.primefaces.context.PrimePartialViewContextFactory which does not have any appropriate constructor.

INFO:   Running on PrimeFaces 4.0
INFO:   Running on PrimeFaces Extensions null
INFO:   Using OmniFaces version null

INFO:   Loading application [Project#Project-war.war] at [Project-war]
INFO:   Project was successfully deployed in 22,734 milliseconds.

OmniFaces 在给定环境中是否存在任何问题？

不，这些只是警告，而不是错误。 Weld 无法为抽象类或没有默认构造函数的类创建注入目标。注入目标需要能够做到Class.forName(className).newInstance()没有任何麻烦。

这种伐木干扰已被报告为焊接问题 1547自 Weld 2.1.1 / 2.2.0 起，警告级别已降至调试级别。

应该注意的是，还有另一个错误，很可能与 GlassFish 类加载有关。 OmniFaces 有一个VetoAnnotatedTypeExtension这应该排除所有这些 OmniFaces 类，以免不必要地被扫描为 CDI 托管 bean。在 Tomcat 7 和 JBoss 6/7/8 中使用 Weld 时效果很好。 IE。对于 OmniFaces 类，这些警告根本不会出现。