servlets - 找不到工厂 : javax. faces.context.FacesContextFactory

Question

我注意到，当尝试设置在 jetty 上运行的 JSF 2 Web 应用程序时，出现此错误:

java.lang.IllegalStateException: Application was not properly initialized at startup, could not find Factory: javax.faces.context.FacesContextFactory

通过将其添加到我的 web.xml 可以轻松解决

<listener>
    <listener-class>
        com.sun.faces.config.ConfigureListener
    </listener-class>
</listener>

我尝试寻找详细的解释，但徒劳无功..

jetty-maven-plugin:8.0.3.v20111011:运行 + jdk 7 + eclipse indigo

这是我的 Maven 依赖项:

<dependencies>
    <dependency>
        <groupId>org.glassfish</groupId>
        <artifactId>javax.faces</artifactId>
        <version>2.1.3</version>
        <scope>compile</scope>
    </dependency>
</dependencies>

这是我的 web.xml:

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    version="2.5">
    <display-name>Basic Setup Web Application</display-name>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>faces/index.xhtml</welcome-file>
    </welcome-file-list>
    <listener>
        <listener-class>
            com.sun.faces.config.ConfigureListener
        </listener-class>
    </listener>
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
</web-app>

这是 jetty 插件的输出:

[INFO] <<< jetty-maven-plugin:8.0.3.v20111011:run (default-cli) @ BasicSetup <<<
[INFO] 
[INFO] --- jetty-maven-plugin:8.0.3.v20111011:run (default-cli) @ BasicSetup ---
[INFO] Configuring Jetty for project: BasicSetup Maven Webapp
[INFO] webAppSourceDirectory C:\Users\albert\workspace\BasicSetup\src\main\webapp does not exist. Defaulting to C:\Users\albert\workspace\BasicSetup\src\main\webapp
[INFO] Reload Mechanic: automatic
[INFO] Classes = C:\Users\albert\workspace\BasicSetup\target\classes
[INFO] Context path = /basicSetup
[INFO] Tmp directory = C:\Users\albert\workspace\BasicSetup\target\tmp
[INFO] Web defaults = org/eclipse/jetty/webapp/webdefault.xml
[INFO] Web overrides =  none
[INFO] web.xml file = file:/C:/Users/albert/workspace/BasicSetup/src/main/webapp/WEB-INF/web.xml
[INFO] Webapp directory = C:\Users\albert\workspace\BasicSetup\src\main\webapp
2011-10-25 14:24:51.091:INFO:oejs.Server:jetty-8.0.3.v20111011
2011-10-25 14:24:51.334:INFO:oejpw.PlusConfiguration:No Transaction manager found - if your webapp requires one, please configure one.
2011-10-25 14:24:52.108:INFO:oejsh.ContextHandler:started o.m.j.p.JettyWebAppContext{/basicSetup,[file:/C:/Users/albert/workspace/BasicSetup/src/main/webapp/, jar:file:/C:/Users/albert/.m2/repository/org/glassfish/javax.faces/2.1.3/javax.faces-2.1.3.jar!/META-INF/resources/]},file:/C:/Users/albert/workspace/BasicSetup/src/main/webapp/
2011-10-25 14:24:52.108:INFO:oejsh.ContextHandler:started o.m.j.p.JettyWebAppContext{/basicSetup,[file:/C:/Users/albert/workspace/BasicSetup/src/main/webapp/, jar:file:/C:/Users/albert/.m2/repository/org/glassfish/javax.faces/2.1.3/javax.faces-2.1.3.jar!/META-INF/resources/]},file:/C:/Users/albert/workspace/BasicSetup/src/main/webapp/
2011-10-25 14:24:52.108:INFO:oejsh.ContextHandler:started o.m.j.p.JettyWebAppContext{/basicSetup,[file:/C:/Users/albert/workspace/BasicSetup/src/main/webapp/, jar:file:/C:/Users/albert/.m2/repository/org/glassfish/javax.faces/2.1.3/javax.faces-2.1.3.jar!/META-INF/resources/]},file:/C:/Users/albert/workspace/BasicSetup/src/main/webapp/
2011-10-25 14:24:52.149:WARN:/basicSetup:unavailable
java.lang.IllegalStateException: Application was not properly initialized at startup, could not find Factory: javax.faces.context.FacesContextFactory
    at javax.faces.FactoryFinder$FactoryManager.getFactory(FactoryFinder.java:967)
    at javax.faces.FactoryFinder.getFactory(FactoryFinder.java:316)
    at javax.faces.webapp.FacesServlet.init(FacesServlet.java:302)
    at org.eclipse.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:456)
    at org.eclipse.jetty.servlet.ServletHolder.doStart(ServletHolder.java:276)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
    at org.eclipse.jetty.servlet.ServletHandler.initialize(ServletHandler.java:779)
    at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:255)
    at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1212)
    at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:610)
    at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:453)
    at org.mortbay.jetty.plugin.JettyWebAppContext.doStart(JettyWebAppContext.java:256)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
    at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:224)
    at org.eclipse.jetty.server.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:167)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
    at org.eclipse.jetty.server.handler.HandlerCollection.doStart(HandlerCollection.java:224)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
    at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:89)
    at org.eclipse.jetty.server.Server.doStart(Server.java:262)
    at org.mortbay.jetty.plugin.JettyServer.doStart(JettyServer.java:65)
    at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:59)
    at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:511)
    at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:364)
    at org.mortbay.jetty.plugin.JettyRunMojo.execute(JettyRunMojo.java:514)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:107)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:319)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:534)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
[INFO] Started Jetty Server
2011-10-25 14:24:52.165:INFO:oejs.AbstractConnector:Started SelectChannelConnector@0.0.0.0:8080 STARTING
[INFO] Starting scanner at interval of 10 seconds.

有什么想法吗？

Answer 1

此监听器自 JSF 1.x 起应由 jsf_core.tld 自动注册。标签库定义文件。您可以在 /META-INF 中找到它JSF 实现 JAR 文件的文件夹。对于 Mojarra 2.1.3(根据日志您似乎正在使用它)，监听器的注册方式如下，从第 80 行开始:

<!-- ============== Configuration Listener ============== -->

<!--
      This ServletContextListener initializes the runtime environment
      of the JavaServer Faces Reference Implementation when a web
      application including it is initialized by the container.
-->
<listener>
   <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
</listener>      

但是，Jetty 显然没有正确接收到这一点。我还在某处读到，当 FacesServlet在处理 TLD 文件之前已经初始化，那么您也将得到这个异常。也许这正在发生在 jetty 。要排除其中之一，请尝试删除 <load-on-startup>条目，以便仅在第一个具体 HTTP 请求时加载该条目，远在 TLD 处理完毕之后。无论如何，在 web.xml 中显式注册监听器确实应该解决它。

此外，从 JSF 2.x 开始，除了 TLD 文件之外，监听器还应该由 ServletContainerInitializer 自动注册。 JAR 文件中的实现，以解决 Glassfish 3 错误。在 Mojarra 2.x 中，这是 com.sun.faces.config.FacesInitializer类，从第 131 行开始有以下几行:

// The following line is temporary until we can solve an ordering
// issue in V3.  Right now the JSP container looks for a mapping
// of the FacesServlet in the web.xml.  If it's not present, then
// it assumes that the application isn't a faces application.  In this
// case the JSP container will not register the ConfigureListener
// definition from our TLD nor will it parse cause or JSP TLDs to
// be parsed.
servletContext.addListener(com.sun.faces.config.ConfigureListener.class);

这仅适用于 Servlet 3.0 容器，例如 Tomcat 7、Glassfish 3、Jetty 8(据说!)等。您似乎使用的是 Jetty 8.0，因此应该符合 Servlet 3.0，但您的 web.xml声明符合 Servlet 2.5，因此容器将以 Servlet 2.5 后备模式运行。改变你的web.xml为了符合 Servlet 3.0 的要求，应该触发此初始化程序。