Servlets JSF2&x2B；漂亮脸蛋->；已为此响应调用了IllegalStateException:PWC3990:getWriter（）

我有一个JavaEE应用程序，它有JSF2+PrettyFaces+Facelets+EJB3+EclipseLink

如上所述，由于JSF2+Faceletes渲染模型与PrettyFaces和h:link标记一起工作时存在一些不一致，我不断遇到一个非法状态异常

根据使用JSF2+Faceletes时的良好实践，我删除了所有旧的JSTL标记和所有commandLink标记

在web.xml中：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" 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_3_0.xsd">
  <display-name>atlPortal</display-name>

    <context-param>
        <param-name>com.sun.faces.prefer.XHTML</param-name>
        <param-value>true</param-value>
    </context-param>

  <context-param>
    <param-name>javax.faces.PROJECT_STAGE</param-name>
    <param-value>Development</param-value>
  </context-param>

    <context-param>
        <param-name>javax.faces.FACELETS_LIBRARIES</param-name>
        <param-value>/WEB-INF/facelets/customTags.taglib.xml</param-value>
    </context-param>

  <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>

    <servlet>
        <servlet-name>imageServlet</servlet-name>
        <servlet-class>com.mindvortex.atl.web.common.servlet.ImageServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>imageServlet</servlet-name>
        <url-pattern>/image/*</url-pattern>
        <url-pattern>/pages/image/*</url-pattern>
        <url-pattern>/pages/protected/image/*</url-pattern>
    </servlet-mapping>

    <filter>
       <filter-name>Pretty Filter</filter-name>
       <filter-class>com.ocpsoft.pretty.PrettyFilter</filter-class>    
       <async-supported>false</async-supported>    
    </filter>

    <filter-mapping> 
       <filter-name>Pretty Filter</filter-name>    
       <url-pattern>/*</url-pattern>
       <dispatcher>FORWARD</dispatcher> 
       <dispatcher>REQUEST</dispatcher>
       <dispatcher>ERROR</dispatcher>
    </filter-mapping>

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

  <!-- servlets and such would be above -->

    <login-config>
        <auth-method>FORM</auth-method>
        <realm-name>userauth</realm-name>
        <form-login-config>
            <form-login-page>/login.faces</form-login-page>
            <form-error-page>/loginError.xhtml</form-error-page>
        </form-login-config>                
    </login-config>

    <security-constraint>
        <display-name>Block All XHTML</display-name>
        <web-resource-collection>
            <web-resource-name>blockXHTML</web-resource-name>
            <description></description>
            <url-pattern>*.xhtml</url-pattern>
            <http-method>GET</http-method>
            <http-method>POST</http-method>
            <http-method>HEAD</http-method>
            <http-method>PUT</http-method>
            <http-method>OPTIONS</http-method>
            <http-method>TRACE</http-method>
            <http-method>DELETE</http-method>
        </web-resource-collection>
        <auth-constraint />             
    </security-constraint>


    <security-constraint>   
        <display-name>ConstraintSSL</display-name>
        <web-resource-collection>
            <web-resource-name>protected</web-resource-name>
            <description/>
            <url-pattern>/pages/protected/*</url-pattern>
            <url-pattern>/login/*</url-pattern>
            <url-pattern>/login.*</url-pattern>
            <url-pattern>/account/*</url-pattern>
            <http-method>GET</http-method>
            <http-method>POST</http-method>
            <http-method>HEAD</http-method>
            <http-method>PUT</http-method>
            <http-method>OPTIONS</http-method>
            <http-method>TRACE</http-method>
            <http-method>DELETE</http-method>
        </web-resource-collection>

        <user-data-constraint>
          <description>SSL not required for Development</description>
          <transport-guarantee>CONFIDENTIAL</transport-guarantee>
        </user-data-constraint>        
    </security-constraint>

    <security-constraint>   
        <display-name>ConstraintUser</display-name>
        <web-resource-collection>
            <web-resource-name>user</web-resource-name>
            <description/>
            <url-pattern>/account/*</url-pattern>
            <http-method>GET</http-method>
            <http-method>POST</http-method>
            <http-method>HEAD</http-method>
            <http-method>PUT</http-method>
            <http-method>OPTIONS</http-method>
            <http-method>TRACE</http-method>
            <http-method>DELETE</http-method>
        </web-resource-collection>
        <auth-constraint>       
            <description/>
            <role-name>ADMINISTRATORS</role-name>
            <role-name>USERS</role-name>
        </auth-constraint>

        <user-data-constraint>
          <description>SSL not required for Development</description>
          <transport-guarantee>CONFIDENTIAL</transport-guarantee>
        </user-data-constraint>        
    </security-constraint>

    <security-role>
        <description/>
        <role-name>USERS</role-name>
    </security-role>
    <security-role>
        <description/>
        <role-name>ADMINISTRATORS</role-name>
    </security-role>

  <session-config>
    <session-timeout>30</session-timeout>
    <tracking-mode>COOKIE</tracking-mode>
  </session-config>

   <welcome-file-list>
    <welcome-file>init.faces</welcome-file>    
   </welcome-file-list>

</web-app>

未调用commentsMB.save Bean操作，我得到一个页面未找到错误，日志中抛出异常

堆栈跟踪：

[#|2012-03-30T13:47:54.968-0300|SEVERE|glassfish3.1.1|org.apache.jasper.servlet.JspServlet|_ThreadID=25;_ThreadName=http-thread-pool-8084(4);|PWC6117:
 File "C%3A%5CGBL%5Cprop%5Cprogs%5Cglassfish-3.1.1%5Cglassfish3%5Cglassfish%5Cdomains%5Cdomain1%5Capplications%5CatlanteusEAR%5CatlanteusPortal-1.0.0_
war%5Ccomments%5Csave%5CcontactUs.jsp" not found|#]

[#|2012-03-30T13:47:54.976-0300|WARNING|glassfish3.1.1|org.apache.catalina.core.ApplicationDispatcherForward|_ThreadID=25;_ThreadName=http-thread-pool
-8084(4);|Exception processing ErrorPage[errorCode=404, location=/pages/error/error404.xhtml]
java.lang.IllegalStateException: PWC1227: Cannot forward after response has been committed
        at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:370)
        at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:350)
        at org.apache.catalina.core.ApplicationDispatcherForward.custom(ApplicationDispatcherForward.java:253)
        at org.apache.catalina.core.ApplicationDispatcherForward.status(ApplicationDispatcherForward.java:209)
        at org.apache.catalina.core.ApplicationDispatcherForward.commit(ApplicationDispatcherForward.java:131)
        at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:353)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:300)
        at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:110)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
        at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
        at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
        at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
        at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
        at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
        at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
        at java.lang.Thread.run(Thread.java:619)
|#]

虽然我只使用XHTML，但JSF似乎将导航解释为.jsp

---

有人能帮我找出我做错了什么吗？自从我开始使用JSF2+Facelets以来，这是我的主要问题。

您的“contactUs.faces”视图id值前面不需要斜杠“/”吗

我认为应该是：

“/contactUs.faces”，对吗

---

~Lincoln

在考虑了答案后，我提出了最终的解决方案，因此我将在这里发布，供其他人理解：

更改了所有JSF资源在pretty-faces.xml中的URL映射以完全限定： 例如，如果contactUs.xhtml位于/pages/下，则映射为：

<url-mapping id="viewContactUs">
  <pattern value="/contactUs/" />
  <view-id value="/pages/contactUs.faces" />
  <action>#{commentsMB.openContactUs}</action></url-mapping>            

#{commentsMB.openContactUs}

从faces-config.xml中删除了所有JSF导航规则。例如，规则如下：

<navigation-case>
    <from-outcome>contactUs</from-outcome>
    <to-view-id>/pages/contactUs.xhtml</to-view-id>         
</navigation-case>

联系人
/pages/contactUs.xhtml

---

将被删除或注释掉。完成此操作后，实际的导航映射将仅出现在pretty-config.xml中，并且将与PrettyFaces筛选器一起正常工作。

请编辑您的问题以包含stacktrace。通过这种方式，我们可以找出谁在试图写信给回复作者，而回复作者显然不应该这样做。@BalusC按照您的建议做了，谢谢！好的，是PrettyFaces的

PrettyFilter

没有检查响应是否已提交。好吧，至少你自己的代码被排除在原因之外。我将把这个问题留给那些更熟悉漂亮面孔的人。这可能是PrettyFaces本身的一个bug，也可能是对

pretty config.xml

的错误配置。我看到了许多与JSF相关的帖子，我将JSF2与Facelets一起使用，因为建议不要使用commandLink和JSTL，对于我可以使用的基于托管Bean操作方法提供导航的任何其他标记，您有什么建议吗？这不会和已经调用的getWriter的问题一样吗？提前感谢。您的问题是由PrettyFaces引起的，而不是由JSF/Facelets引起的。你的JSF/Facelets代码非常好。Lincoln，当我使用a/slash时，链接URL无法解析：[#|2012-03-30T13:32:49.050-0300 |警告| glassfish3.1.1 | javax.enterprise.resource.webcontainer.JSF.renderkit | u ThreadID=21；| u ThreadName=http线程池-8084（5）；| JSF1090:组件注释的导航案例未解析。|，这是因为此路径需要完全限定。您需要指定JSF资源的完整路径。我尝试使用JSF资源的完全限定路径，但没有成功，我的页面位于：/pages/contactUs.xhtml-但在我在faces-config.xml中使用的pretty-config.xml中，我有contactUs/pages/contactUs.xhtml，该模式适用于我应用程序中的所有页面。唯一的问题是当我有两个连续的链接呈现与美丽的脸。你有什么建议吗？提前谢谢。为什么要混合导航案例和pretty-config.xml？我会使用其中一个。这可能是您的问题，但这里肯定存在配置问题。如果您想在OCPsoft支持论坛上发布帮助，我们可能会在那里提供更多帮助。因为你可以发布你的整个堆栈跟踪和项目文件。我能猜到的唯一线索是你收到的错误不是根本原因。显示错误页面时出现问题，这意味着是其他错误导致了该问题，然后错误页面也恰好无法显示。寻找第一个错误，你应该找到你的问题。澄清。导航规则是否存在并不重要——除非使用

   <navigation-rule>
        <from-view-id>/*</from-view-id>
        <navigation-case>
            <from-outcome>contactUs</from-outcome>
            <to-view-id>/pages/contactUs.xhtml</to-view-id>         
        <redirect /></navigation-case>

                    <div class="form_row">
                        <h:link id="commentsSave" outcome="pretty:commentsSave" styleClass="contact">
                            #{msg.send}
                        </h:link>
                    </div>

  <url-mapping id="commentsSave">
      <pattern value="/comments/save/" />
      <view-id value="contactUs.faces" />
      <action>#{commentsMB.save}</action>
  </url-mapping>                       

public String save() {
    return save(this.getEntity());
}

[#|2012-03-30T13:47:54.968-0300|SEVERE|glassfish3.1.1|org.apache.jasper.servlet.JspServlet|_ThreadID=25;_ThreadName=http-thread-pool-8084(4);|PWC6117:
 File "C%3A%5CGBL%5Cprop%5Cprogs%5Cglassfish-3.1.1%5Cglassfish3%5Cglassfish%5Cdomains%5Cdomain1%5Capplications%5CatlanteusEAR%5CatlanteusPortal-1.0.0_
war%5Ccomments%5Csave%5CcontactUs.jsp" not found|#]

[#|2012-03-30T13:47:54.976-0300|WARNING|glassfish3.1.1|org.apache.catalina.core.ApplicationDispatcherForward|_ThreadID=25;_ThreadName=http-thread-pool
-8084(4);|Exception processing ErrorPage[errorCode=404, location=/pages/error/error404.xhtml]
java.lang.IllegalStateException: PWC1227: Cannot forward after response has been committed
        at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:370)
        at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:350)
        at org.apache.catalina.core.ApplicationDispatcherForward.custom(ApplicationDispatcherForward.java:253)
        at org.apache.catalina.core.ApplicationDispatcherForward.status(ApplicationDispatcherForward.java:209)
        at org.apache.catalina.core.ApplicationDispatcherForward.commit(ApplicationDispatcherForward.java:131)
        at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:353)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:300)
        at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:110)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:98)
        at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:91)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:162)
        at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:330)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
        at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:174)
        at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)
        at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)
        at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)
        at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)
        at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
        at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
        at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
        at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
        at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
        at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
        at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
        at java.lang.Thread.run(Thread.java:619)
|#]

<url-mapping id="viewContactUs">
  <pattern value="/contactUs/" />
  <view-id value="/pages/contactUs.faces" />
  <action>#{commentsMB.openContactUs}</action></url-mapping>            

<navigation-case>
    <from-outcome>contactUs</from-outcome>
    <to-view-id>/pages/contactUs.xhtml</to-view-id>         
</navigation-case>