Illegal attempt to set ViewHandler after a response has been rendered

Question

I am getting the below error on my loging page. Illegal attempt to set ViewHandler after a response has been rendered.

I am using Richfaces 3.3.3 and facelets and jsf and tomcat

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <!-- Start - Richfaces Configuration-->
    <!-- Plugging the "Blue Sky" skin into the project -->
    <context-param>
        <param-name>org.richfaces.SKIN</param-name>
        <param-value>blueSky</param-value>
    </context-param>
    <!-- Making the RichFaces skin spread to standard HTML controls -->
    <context-param>
        <param-name>org.richfaces.CONTROL_SKINNING</param-name>
        <param-value>enable</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.DISABLE_FACELET_JSF_VIEWHANDLER</param-name>
        <param-value>true</param-value>
    </context-param>
    <filter>
        <display-name>RichFaces Filter</display-name>
        <filter-name>richfaces</filter-name>
        <filter-class>org.ajax4jsf.Filter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>richfaces</filter-name>
        <servlet-name>Faces Servlet</servlet-name>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>INCLUDE</dispatcher>
    </filter-mapping>
    <!-- End - Richfaces Configuration-->
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        <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_2_0.xsd"
version="2.0 " metadata-complete="false">
<navigation-rule>
    <from-view-id>/login.xhtml</from-view-id>
    <navigation-case>
        <from-outcome>success</from-outcome>
        <to-view-id>/main.xhtml</to-view-id>
        <redirect />
    </navigation-case>
    <navigation-case>
        <from-outcome>fail</from-outcome>
        <to-view-id>/login.jsp</to-view-id>
        <redirect />
    </navigation-case>
</navigation-rule>
<navigation-rule>
    <from-view-id>/main.xhtml</from-view-id>
    <navigation-case>
        <from-outcome>viewScreen</from-outcome>
        <to-view-id>/view.xhtml</to-view-id>
        <redirect />
    </navigation-case>
</navigation-rule>
<managed-bean>
    <managed-bean-name>mainBean</managed-bean-name>
    <managed-bean-class>coreservlets.MainBean</managed-bean-class>
    <managed-bean-scope>request</managed-bean-scope>
    <managed-property>
        <property-name>sessionMap</property-name>
        <value>#{sessionScope}</value>
    </managed-property>
    <managed-property>
        <property-name>facesContext</property-name>
        <value>#{facesContext}</value>
    </managed-property>
</managed-bean>
<managed-bean>
    <managed-bean-name>loginBean</managed-bean-name>
    <managed-bean-class>coreservlets.LoginBean</managed-bean-class>
    <managed-bean-scope>request</managed-bean-scope>

    <managed-property>
        <property-name>sessionMap</property-name>
        <value>#{sessionScope}</value>
    </managed-property>
    <managed-property>
        <property-name>facesContext</property-name>
        <value>#{facesContext}</value>
    </managed-property>
</managed-bean>
</faces-config>

Please suggest

Answer 1

Try changing the view handler setting in faces-config.xml to

<application>
  <view-handler>org.ajax4jsf.application.AjaxViewHandler</view-handler>
</application>

(see here)