我正在尝试按照 primefaces 用户指南中记录的内容进行工作，以及在那里创建的一些帖子。

Upload file in JSF primefaces .

环境是:javaee full + jpa + jsf 2.2 + primefaces 4 + glassfish v4

我又发帖了，因为我已经尝试了我在网上找到的所有示例和建议，但都没有成功。

我可以通过:event.getFile.getFileName 获取文件上传名称，但内容始终为空

------------更新----------------------------

我的 xhtml 页面:

<h:form enctype="multipart/form-data">

                <p:outputLabel value="La photo :"/>
                <p:fileUpload fileUploadListener="#{personController.upload}"
        mode="advanced" 
        update="messages"
        sizeLimit="100000" 
        allowTypes="/(\.|\/)(gif|jpe?g|png)$/"/>
                <p:growl id="messages" showDetail="true"/>

            </h:form>

我的托管 bean:

@Named(value = "personController")
@SessionScoped
public class PersonController implements Serializable {

    /**
     * Creates a new instance of PersonController
     */
    @Inject
    private PersonneFacade personneService;
    private Personne current;
    private Personne newPerson;
    private List<Personne> personnes;


    public PersonController() {
    }

    public List<Personne> getAll(){
        return personneService.findAll();
    }


    public void upload(FileUploadEvent event) {
        FacesMessage msg = new FacesMessage("Success! ", event.getFile().getFileName() + " is uploaded.");
        FacesContext.getCurrentInstance().addMessage(null, msg);
        // Do what you want with the file

        System.out.println(event.getFile().getFileName());
        System.out.println("le fichier " + event.getFile().getContents());
        newPerson.setPhoto(event.getFile().getContents());
    }

我的 web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</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>*.xhtml</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.xhtml</welcome-file>
    </welcome-file-list>

     <!-- ############################################# -->
<!-- # File upload                                      # -->
<!-- ############################################# -->
<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>
    <dispatcher>FORWARD</dispatcher>
</filter-mapping>


</web-app>

确定我有我的 pom.xml :

<dependencies>
        <dependency>  
    <groupId>org.primefaces</groupId>  
    <artifactId>primefaces</artifactId>  
    <version>4.0</version>  
</dependency>
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3</version>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.persistence</groupId>
            <artifactId>eclipselink</artifactId>
            <version>2.5.0-SNAPSHOT</version>
            <scope>provided</scope>
        </dependency>

当我尝试上传时，我看到了 glassfish 输出日志:

INFO:   mdmx.jpg
INFO:   le fichier null

有什么想法吗？？