java.lang.IllegalStateException:在呈现响应后非法尝试设置ViewHandler

Question

我的Java EE Web应用程序与Glassfish 2.1一起正常运行.现在我想迁移到Glassfish 3.1.1,但在成功部署war文件后,它会出现以下错误:

WARNING: ApplicationDispatcher[/Myapp] PWC1231: Servlet.service() for servlet Faces Servlet threw exception
java.lang.IllegalStateException: Illegal attempt to set ViewHandler after a response has been rendered.

我的应用程序使用以下框架.

• Spring Framework 3.0.2
• JSF 2.0
• RichFaces 3.3.3决赛

它是用JDK 1.6编译的.

这个问题是怎么造成的,怎么解决？

编辑

我已经按照这里提供的修改

我对richfaces的依赖关系如下: -

   <dependency>
        <groupId>org.richfaces.framework</groupId>
        <artifactId>richfaces-api</artifactId>
        <version>3.3.3.Final</version>
    </dependency>
    <dependency>
        <groupId>org.richfaces.framework</groupId>
        <artifactId>richfaces-impl-jsf2</artifactId>
        <version>3.3.3.Final</version>
    </dependency>
    <dependency>
        <groupId>org.richfaces.ui</groupId>
        <artifactId>richfaces-ui</artifactId>
        <version>3.3.3.Final</version>
    </dependency>

我的jsf依赖是

        <dependency>
            <groupId>com.sun.faces</groupId> 
            <artifactId>jsf-api</artifactId> 
            <version>2.0.2</version> 
        </dependency>
        <dependency>
            <groupId>com.sun.faces</groupId> 
            <artifactId>jsf-impl</artifactId> 
            <version>2.0.2</version> 
        </dependency>

在web.xml中添加了上下文参数如下: -

<context-param>
    <param-name>org.ajax4jsf.VIEW_HANDLERS</param-name>
    <param-value>com.sun.facelets.FaceletViewHandler</param-value>
</context-param>
<context-param>
    <param-name>javax.faces.DISABLE_FACELET_JSF_VIEWHANDLER</param-name>
    <param-value>true</param-value>
</context-param>

使用2.5版修改了我的应用程序描述符:

<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

我的 在faces-config中如下: -

 <application>
        <navigation-handler >
            org.navigation.CustomNavigationHandler
        </navigation-handler>

        <view-handler>
            org.ajax4jsf.application.AjaxViewHandler
        </view-handler>
<!--        <view-handler>
            com.sun.facelets.FaceletViewHandler
        </view-handler>-->
        <variable-resolver>org.springframework.web.jsf.DelegatingVariableResolver</variable-resolver>
        <message-bundle>MyMessages</message-bundle>
    </application>

应用程序成功部署但在此之后我在浏览器中启动应用程序时遇到类转换异常错误:

服务器日志如下:

INFO: myApp was successfully deployed in 21,635 milliseconds.
SEVERE: Error Rendering View[/login.xhtml]
javax.faces.FacesException: java.lang.ClassCastException: java.lang.String cannot be cast to javax.faces.component.UIComponent
    at com.sun.faces.application.ApplicationImpl.createComponentApplyAnnotations(ApplicationImpl.java:1923)

我怎么解决这个？

Answer 1

java.lang.IllegalStateException:在呈现响应后非法尝试设置ViewHandler.

当您在JSF 2.x环境中使用JSF 1.2目标组件库时,这是一个典型的错误消息.RichFaces 3.3.x是为JSF 1.2设计的,但Glassfish 3.1附带JSF 2.1而不是Glassfish 2.1中的JSF 1.2.在JSF 2中,视图处理领域有很多变化,因为JSP已被弃用并被Facelets取代.

RichFaces有一个很好的指南,如何在JSF 2环境中安装和配置RichFaces 3.3.3:RichFaces 3.3.3和JSF 2.0.解决此特定异常的关键步骤是添加以下上下文参数,该参数禁用JSF 2 Facelets视图处理程序:

<context-param>
     <param-name>javax.faces.DISABLE_FACELET_JSF_VIEWHANDLER</param-name>
     <param-value>true</param-value>
</context-param>

但是还需要做更多的步骤.彻底阅读本指南.