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Date: Fri, 13 Mar 2009 17:28:50 -0700 (PDT)
From: "Leonardo Uribe (JIRA)" <dev@myfaces.apache.org>
To: dev@myfaces.apache.org
Subject: [jira] Commented: (MYFACES-1955) MyFaces 1.2.4 and WebLogic 10.3-
 strict servlet API: cannot call getWriter() after getOutputStream()
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    [ https://issues.apache.org/jira/browse/MYFACES-1955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681955#action_12681955 ] 

Leonardo Uribe commented on MYFACES-1955:
-----------------------------------------

 After doing a lot of tests, the problem became clear:

1st call:
        at java.lang.Thread.dumpStack(Thread.java:1206)
        at org.apache.myfaces.application.jsp.ViewResponseWrapper.getOutputStream(ViewResponseWrapper.java:116)
        at weblogic.servlet.internal.DelegateChunkWriter.write(DelegateChunkWriter.java:108) 

DelegateChunkWriter violates servlet spec, calling "getOutputStream" from "write" method. Myfaces is doing right, but weblogic do not. That is the reason why myfaces works well in other containers (they never call getOutputStream).

 Bad luck this time. It is a bug on weblogic.

> MyFaces 1.2.4 and WebLogic 10.3- strict servlet API: cannot call getWriter() after getOutputStream()
> ----------------------------------------------------------------------------------------------------
>
>                 Key: MYFACES-1955
>                 URL: https://issues.apache.org/jira/browse/MYFACES-1955
>             Project: MyFaces Core
>          Issue Type: Bug
>    Affects Versions: 1.2.2, 1.2.3, 1.2.4
>         Environment: Windows Vista, WebLogic 10.3, MyFaces 1.2.4
>            Reporter: Paulo Moreira
>            Assignee: Leonardo Uribe
>         Attachments: MYFACES-1955.patch
>
>
> I am trying to run a very simple JSF application using myFaces 1.2.4 and WebLogic 10.3. The application has the following content:
> web.xml:
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <web-app 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_2_5.xsd"
>         version="2.5">
>    <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>index.html</welcome-file>
>    </welcome-file-list>
> </web-app>
> faces-config.xml:
> <?xml version="1.0"?>
> <faces-config 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-facesconfig_1_2.xsd"
>         version="1.2">
>    <navigation-rule>
>       <from-view-id>/index.jsp</from-view-id>
>       <navigation-case>
>          <from-outcome>login</from-outcome>
>          <to-view-id>/welcome.jsp</to-view-id>
>       </navigation-case>
>    </navigation-rule>
>    <managed-bean>
>       <managed-bean-name>user</managed-bean-name>
>       <managed-bean-class>pt.pm.richfaces.UserBean</managed-bean-class>
>       <managed-bean-scope>session</managed-bean-scope>
>    </managed-bean>
> </faces-config>
> index.html:
> <html>
>    <head>
>       <meta http-equiv="Refresh" content= "0; URL=index.faces"/>
>       <title>Start Web Application</title>
>    </head>
>    <body>
>       <p>Please wait for the web application to start...</p>
>    </body>
> </html>
> index.jsp:
> <html>
> <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
> <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
> <f:view>
>         <head>
>         <title>A Simple JavaServer Faces Application</title>
>         </head>
>         <body>
>         <h:form>
>                 <h3>Please enter your name and password.</h3>
>                 <table>
>                         <tr>
>                                 <td>Name:</td>
>                                 <td><h:inputText value="#{user.name}" /></td>
>                         </tr>
>                         <tr>
>                                 <td>Password:</td>
>                                 <td><h:inputSecret value="#{user.password}" /></td>
>                         </tr>
>                 </table>
>                 <p><h:commandButton value="Login" action="login" /></p>
>         </h:form>
>         </body>
> </f:view>
> </html>
> My WEB_INF/lib contains the following jars: commons-beanutils-1.7.0, commons-codec-1.3, commons-collections-3.2, commons-digester-1.8, commons-discovery-0.4, commons-logging-1.1.1, glassfish.el_2.1.0, glassfish.jstl_1.2.0.1, myfaces-api-1.2.4, myfaces-impl-1.2.4.
> Whenever I try to run my application I get the following exception:
> java.lang.IllegalStateException: strict servlet API: cannot call getWriter() aft
> er getOutputStream()
>         at weblogic.servlet.internal.ServletResponseImpl.getWriter(ServletRespon
> seImpl.java:308)
>         at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspV
> iewHandlerImpl.java:362)
>         at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderRes
> ponseExecutor.java:41)
>         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:
> 140)
>         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:155)
> If instead of using myFaces I use the Sun Reference implementation everything goes well. If I deploy the application (using myFaces) in JBoss 5 it works well. So the problem seems to be related with the use of WLS 10.3 and myFaces 1.2.4.
> I tried with 1.2.3 and 1.2.2 and got the issue with both. I tried with 1.2.0 and got another error:
> javax.faces.FacesException: weblogic.servlet.jsp.CompilationException: Failed to compile JSP /index.jsp
> index.jsp:14:22: Static attribute must be a String literal, its illegal to specify an expression.
>                                 <td><h:inputText value="#{user.name}" /></td>

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