2
votes

I am currently using JSF 2.2.7 and Icefaces version 4.0.0. My project was running on Tomcat 7, but I am having trouble trying to get it working on Tomcat 8. I am getting a null pointer exception as a method in the icefaces code seems to check the current version of jsf being used. This always return null and i do not seem to be setting the correct implementation of jsf. The stack trace is as follows:

java.lang.NullPointerException at org.icefaces.util.EnvUtils.isJSF22(EnvUtils.java:976) at org.icefaces.impl.context.DOMPartialViewContext.renderState(DOMPartialViewContext.java:743) at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:301) at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:219) at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1004) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:430) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:614) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:744) Aug 04, 2015 7:50:52 AM com.sun.faces.application.view.FaceletViewHandlingStrategy handleRenderException SEVERE: Error Rendering View[/pages/Ports.xhtml] java.lang.NullPointerException at org.icefaces.util.EnvUtils.isJSF22(EnvUtils.java:976) at org.icefaces.impl.context.DOMPartialViewContext.renderState(DOMPartialViewContext.java:743) at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:301) at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:219) at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1004) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:430) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:614) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:744) Aug 04, 2015 7:50:52 AM com.sun.faces.context.AjaxExceptionHandlerImpl handlePartialResponseError SEVERE: java.lang.NullPointerException at org.icefaces.util.EnvUtils.isJSF22(EnvUtils.java:976) at org.icefaces.impl.context.DOMPartialViewContext.renderState(DOMPartialViewContext.java:743) at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:301) at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:219) at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1004) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:430) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:614) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:617) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1527) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1484) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:744)

On closer inspection it seems that the getImplementationVersion() method is returning null:

/**
 * Determine whether the current JSF implementation is version 2.2
 * @return true if JSF implementation is 2.2
 */
public static boolean isJSF22() {
    return FacesContext.class.getPackage().getImplementationVersion().startsWith("2.2");
}

Here is my pom.xml with the IceFaces and JSF dependencies. I am unsure how my JSF implementation is not set.

    <?xml version="1.0"?>
     <project
        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
        xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
        <modelVersion>4.0.0</modelVersion>
        <groupId>oag.com.reference</groupId>
        <artifactId>web</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>ReferenceDataWeb </name>
        <packaging>war</packaging>
        <description>Reference data web project.</description>


    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <sonar.core.codeCoveragePlugin>jacoco</sonar.core.codeCoveragePlugin>
        <sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.6</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>0.7.0.201403182114</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>prepare-agent</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <destFile>${sonar.jacoco.reportPath}</destFile>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>org.icefaces</groupId>
            <artifactId>icefaces</artifactId>
            <version>4.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.icefaces</groupId>
            <artifactId>icefaces-ace</artifactId>
            <version>4.0.0</version>
        </dependency>

        <dependency>
            <groupId>org.icepush</groupId>
            <artifactId>icepush</artifactId>
            <version>4.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.icefaces</groupId>
            <artifactId>icefaces-compat</artifactId>
            <version>3.3.0</version>
            <type>pom</type>
        </dependency>

        <dependency>
            <groupId>com.oag.reference</groupId>
            <artifactId>business</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.7</version>
        </dependency>

        <dependency>
            <groupId>org.icefaces.ace-themes</groupId>
            <artifactId>ace-cupertino</artifactId>
            <version>4.0.0</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>

    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.sun.faces</groupId>
                <artifactId>jsf-api</artifactId>
                <version>2.2.7</version>
            </dependency>
            <dependency>
                <groupId>com.sun.faces</groupId>
                <artifactId>jsf-impl</artifactId>
                <version>2.2.7</version>
            </dependency>
        </dependencies>

    </dependencyManagement>

 </project>

This is the complete list of jar files creates in my war file WEB-INF/lib folder:

ace-cupertino-4.0.0.jar
activation-1.1.jar business-0.0.1-SNAPSHOT.jar
common-0.0.1-SNAPSHOT.jar commons-beanutils-1.8.0.jar
commons-logging-1.1.jar database-0.0.1-SNAPSHOT.jar
db2jcc4-1.0.0.jar
hamcrest-core-1.1.jar icefaces-4.0.0.jar icefaces-ace-4.0.0.jar
icepush-4.0.0.jar javax.faces-2.2.7.jar
jstl-1.2.jar junit-4.9.jar
mail-1.4.1.jar mockito-all-1.9.5.jar
poi-3.7.jar

Looking inside the javax.faces-2.2.7.jar and META-INF/MANIFEST.MF i can see that the implementation version is set to 2.2.7. So I have no idea how the implementation version is null when referenced by the icefaces code at runtime.

Can anybody help please?

Thanks - See more at: http://www.icesoft.org/JForum/posts/list/22974.page#80376

1
Try current Mojarra version 2.2.12 instead. There was a Tomcat-related fix in setting right context class loader somewhere after 2.2.7. - BalusC
Hi, I have changed both com.sun.faces dependencies in my pom.xml file to version 2.2.12 as suggested. This has prevented my initial problems but created some more. I now receive an INFO warning that "INFO: CDI @ViewScoped bean functionality unavailable" and a javax.faces.FacesException when trying to view an xhtml page. This exception says...Cannot add the same component twice: javascript_runner. Thanks, Liam. - LiamWilson94
Great, your problem is solved. The INFO is innocent/informal. The exception is candidate for a new question if you can't figure out it (hint: stop binding components to beans) - BalusC
Thanks for your help regarding the initial problem! I am not sure what you mean by your last comment. I have not used the binding attribute to bind a component to any bean in the project. - LiamWilson94
I see that snapshot releases are available here anonsvn.icesoft.org/repo/maven2/snapshots/org/icefaces/icefaces/… - BalusC

1 Answers

3
votes

This is most likely caused by a bug of having the wrong context class loader at hands which was fixed in Mojarra 2.2.9 as per issue 3341.

Upgrading to at least Mojarra 2.2.9 (currently latest is 2.2.12) should solve your problem.