Problem when trying to upload files using primefaces 4.0

Question

Problem when trying to upload files using primefaces 4.0

Asked 10 years, 8 months ago

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I have a simple application that allows me to upload text files. To make these uploads, I’m using File Upload from Primefaces, but I’m having problems. I have tried several solutions and I can not fix this problem.

This application is built on top of JPA, Spring 4, Spring Security, JSF 2.2 and Primefaces 4.0. I also use the omniface library as a helper for JSF.

I broke the question into several pieces that I think are related to this problem of uploading the first faces. But if you need more information, let me know so I can supplement my question.

The Maven dependencies (pom.xml)

There are more dependencies declared, but I think only These are used by primefaces. If you need to view my entire pom.xml, Let me know.

<dependency>
    <groupId>org.primefaces.themes</groupId>
    <artifactId>all-themes</artifactId>
    <version>1.0.10</version>
    <scope>compile</scope>
</dependency>

<dependency>
    <groupId>org.primefaces</groupId>
    <artifactId>primefaces</artifactId>
    <version>4.0</version>
    <scope>compile</scope>
</dependency>

<dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-api</artifactId>
    <version>7.0</version>
    <scope>provided</scope>
</dependency>

<dependency>
    <groupId>commons-fileupload</groupId>
    <artifactId>commons-fileupload</artifactId>
    <version>1.3.1</version>
    <scope>compile</scope>
</dependency>

<dependency>
    <groupId>org.omnifaces</groupId>
    <artifactId>omnifaces</artifactId>
    <version>1.7</version>
    <scope>compile</scope>
</dependency>

The web.xml file

Only the parts relevant to the first faces.

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns=" http://xmlns.jcp.org/xml/ns/javaee/"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee/  http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    <display-name>My App</display-name>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/spring-context*.xml</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>primefaces.THEME</param-name>
        <param-value>aristo</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>

    <filter>
        <filter-name>springSecurityFilterChain</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>springSecurityFilterChain</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <listener>
        <listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class>
    </listener>

    <security-constraint>
        <display-name>Protege os fontes das páginas JSF quando acessadas
            diretamente
        </display-name>
        <web-resource-collection>
            <web-resource-name>XHTML</web-resource-name>
            <url-pattern>*.xhtml</url-pattern>
        </web-resource-collection>
        <auth-constraint />
    </security-constraint>

    <filter>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <servlet-name>Faces Servlet</servlet-name>
    </filter-mapping>

    <session-config>
        <session-timeout>960</session-timeout>
    </session-config>

    <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>*.jspa</url-pattern>
    </servlet-mapping>

    <error-page>
        <exception-type>javax.faces.application.ViewExpiredException</exception-type>
        <location>/app/errors/viewExpired.jspa</location>
    </error-page>

    <error-page>
        <exception-type>java.lang.Exception</exception-type>
        <location>/app/errors/error.jspa</location>
    </error-page>

    <error-page>
        <error-code>404</error-code>
        <location>/app/errors/notfound.jspa</location>
    </error-page>

    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

The faces-config.xml file (related to Spring and Omnifaces.).

<application>
    <el-resolver>org.springframework.web.jsf.el.SpringBeanFacesELResolver</el-resolver>
</application>

<factory>
    <exception-handler-factory>org.omnifaces.exceptionhandler.FullAjaxExceptionHandlerFactory</exception-handler-factory>
</factory>

<faces-config-extension>
    <facelets-processing>
        <file-extension>.xhtml</file-extension>
        <process-as>xhtml</process-as>
    </facelets-processing>
</faces-config-extension>

The XHTML files.

This is where I think the problem might be, but I can’t find it.

<h:form id="uplFileForm" enctype="multipart/form-data">
    <p:fileUpload id="uplFile"
                  fileUploadListener="#{myManagedBean.save}"
                  mode="advanced"
                  auto="true"
                  label="Select the file"
                  uploadLabel="Upload"
                  cancelLabel="Cancel"
                  invalidSizeMessage="File is too big"
                  invalidFileMessage="Format not supported"
                  dragDropSupport="false"
                  sizeLimit="614572800"
                  allowTypes="/(\.|\/)(txt|TXT)$/" />
</h:form>

My Managed Bean

And here is where is the method where you should receive the upload file and save it to disk. The problem is that my file saving method save(FileUploadEvent) is never called! I have tried debug and the execution never gets to it. It leads me to believe that the problem is before, ie in XHTML.

@ManagedBean
@ViewScoped
public class MyManagedBean extends AbstractMB implements Serializable {
    public void save(FileUploadEvent event) {
        try {
            String fileName = event.getFile().getFileName();

            MyFileUpload myFile = new MyFileUpload();
            byte[] content = event.getFile().getContents();

            myFile.setFilename(event.getFile().getFileName());
            myFile.setContent(conteudo);
            myFile.setChecksum(getHelperService().getCheckSum(content));
            save(myFile);
        }
        catch (ServiceException ex) {
            logger.error("Error, ex);
         }
    }
}

The Exception

And this is the exception that occurs when I click the file upload button. Note that the error occurs and the progress bar does not even move!

ERROR [io.undertow.request] (default task-2) UT005023: Exception handling request to /myapp/app/admin/fileuploads/index.jspa: java.lang.NullPointerException
    at org.omnifaces.config.WebXml.findErrorPageLocation(WebXml.java:176) [omnifaces-1.7.jar:1.7]
    at org.omnifaces.exceptionhandler.FullAjaxExceptionHandler.findErrorPageLocation(FullAjaxExceptionHandler.java:270) [omnifaces-1.7.jar:1.7]
    at org.omnifaces.exceptionhandler.FullAjaxExceptionHandler.handleAjaxException(FullAjaxExceptionHandler.java:200) [omnifaces-1.7.jar:1.7]
    at org.omnifaces.exceptionhandler.FullAjaxExceptionHandler.handle(FullAjaxExceptionHandler.java:175) [omnifaces-1.7.jar:1.7]
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:119) [jsf-impl-2.2.5-jbossorg-3.jar:]
    at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:121) [jsf-impl-2.2.5-jbossorg-3.jar:]
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198) [jsf-impl-2.2.5-jbossorg-3.jar:]
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646) [jboss-jsf-api_2.2_spec-2.2.5.jar:2.2.5]
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:130) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:70) [primefaces-4.0.jar:4.0]
    at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:56) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108) [spring-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) [spring-security-web-3.2.3.RELEASE.jar:3.2.3.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344) [spring-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261) [spring-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
    at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:56) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:52) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:51) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:56) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70) [undertow-servlet-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25) [undertow-core-1.0.0.Final.jar:1.0.0.Final]
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
...

Ricardo, how is connfigurado your Faces Servlet of web.xml?

– Miguel Cartagena

2014/04/03 at 12:57
I just added all of mine web.xml @Miguelcartagena.

– humungs

2014/04/03 at 13:07
It is hard to point out a problem there. Try debugging by placing a breakpoint in the upload filter of the first faces. Because the error is an NPE, then surely you will be able to identify which object is null.

– Miguel Cartagena

2014/04/03 at 15:22
Unfortunately the PF does not help much in the matter of logs. The log there says nothing. Is there any other stack or log? Maybe this can give a hint of the real cause of the problem.

– utluiz

2014/04/03 at 19:33
Another thing, I didn’t understand this setting <faces-config-extension> in the faces-config. There she is with xhtml and in the web.xml is jspa.

– utluiz

2014/04/03 at 19:37
So, @Miguelcartagena, it’s a Nullpointerexception, but my MB method is never called. I can’t "stop" the execution. It seems to be something internal PF because it doesn’t even load the file. The progress bar doesn’t evolve and already bursts the error.

– humungs

2014/04/03 at 20:49
@utluiz, this configuration you mentioned is related to the generation of <DOCTYPE> in HTML. I’ll explain it better. By default, JSF 2.2 generates HTML 5 DOCTYPE, i.e.: <!DOCTYPE html>. However, my project is setting the DOCTYPE "manually" in the XHTML source. So I need to tell JSF 2.2 not to generate the default DOCTYPE. For this I use this setting.

– humungs

2014/04/03 at 20:54
@Ricardogiaviti understand that you can’t put a breakpoint in your code, but you can put it in the Primefaces code, in the class FileUploadFilter. How you do it depends on your IDE.

– Miguel Cartagena

2014/04/04 at 12:33

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by Luídne • **1,748** points · Answer 1 · 2014-04-29T22:22:21+00:00

By default Primefaces 4.0 makes a choice between mode Native and with. Something unexpected must be happening in this choice. To avoid this, add the following in your web xml. to use the Commons Fileupload library that is already present in your project.

<context-param>
   <param-name>primefaces.UPLOADER</param-name>
   <param-value>commons</param-value>
</context-param>

So Primefaces stops making the automatic choice that is standard.