Primefaces fileUpload不起作用，FileUploadFilter调用两次

Question

我正在使用Spring 3.1.0.RELEASE，JSF 2.x，JPA 2和Hibernate Provider进行Web应用程序。该应用程序在Tomcat 6.35上运行。

我使用PrettyFaces 3.3.2获取友好URL和Spring安全性3.1.0.RELEASE。

我使用Primefaces 3.1，我尝试使用Primefaces的fileupload组件。可悲的是它不起作用。

我的pom.xml中有很好的依赖关系

<dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.2.1</version>
        </dependency><dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>1.4</version>
        </dependency>

我的web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<!-- Use this definition if using a Java EE 6 container This also stops Eclipse
    from complaining that 3.0 is not a valid version <web-app version="3.0" 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_3_0.xsd"> -->
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    version="2.5">

    <!-- Theme pour prime -->
    <context-param>
        <param-name>primefaces.THEME</param-name>
        <param-value>glass-x</param-value>
    </context-param>

    <!-- The definition of the Root Spring Container shared by all Servlets
        and Filters -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            /WEB-INF/spring/applicationContext.xml
            /WEB-INF/spring/security-app-context.xml
        </param-value>
    </context-param>

    <context-param>
        <param-name>javax.faces.DEVELOPMENT</param-name>
        <param-value>false</param-value>
    </context-param>

    <context-param>
        <param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
        <param-value>true</param-value>
    </context-param>


    <!-- jboss-el -->
    <context-param>
        <param-name>com.sun.faces.expressionFactory</param-name>
        <param-value>org.jboss.el.ExpressionFactoryImpl</param-value>
    </context-param>

    <filter>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
        <init-param>
            <param-name>thresholdSize</param-name>
            <param-value>51200</param-value>
        </init-param>

        <init-param>
            <param-name>uploadDirectory</param-name>
            <param-value>/tmp/primefacesFileupload</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <url-pattern>/*</url-pattern>
        <servlet-name>Faces Servlet</servlet-name>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>ASYNC</dispatcher>
    </filter-mapping>

<!--    Filter for setting all the requests and responses to UTF-8 encoding-->
    <filter>
        <filter-name>spring-encoding-filter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>spring-encoding-filter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- Localisation -->
    <filter>
        <filter-name>localizationFilter</filter-name>
        <filter-class>org.springframework.web.filter.RequestContextFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>localizationFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


    <!-- Spring security -->
    <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>


    <!-- Pretty faces -->
    <filter>
        <filter-name>Pretty Filter</filter-name>
        <filter-class>com.ocpsoft.pretty.PrettyFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>Pretty Filter</filter-name>
        <url-pattern>/*</url-pattern>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>ERROR</dispatcher>
    </filter-mapping>


    <!-- Creates the Spring Container shared by all Servlets and Filters -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- place constraints on a single user's ability to log in to your application -->
    <listener>
        <listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class>
    </listener>

    <!-- Processes application requests -->
    <servlet>
        <servlet-name>appServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/spring/app/servlet-context.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>appServlet</servlet-name>
        <url-pattern>/spring/</url-pattern>
    </servlet-mapping>

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

    <servlet>
        <servlet-name>Resource Servlet</servlet-name>
        <servlet-class>org.primefaces.resource.ResourceServlet</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>Resource Servlet</servlet-name>
        <url-pattern>/primefaces_resource/*</url-pattern>
    </servlet-mapping>

    <resource-ref>
        <res-ref-name>jsf/ProjectStage</res-ref-name>
        <res-type>java.lang.String</res-type>
        <jndi-name>javax.faces.PROJECT_STAGE</jndi-name>
    </resource-ref>

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

在视图中，我尝试以下操作：

<h:form enctype="multipart/form-data" id="testFileupload">
            <pou:fieldset legend="Upload de fichiers">
                <pou:messages showDetail="true"/>

                <pou:fileUpload id="fileUploadInputTest" fileUploadListener="#{siteFormManager.handleFileUpload}" auto="true" dragDropSupport="false"/>
            </pou:fieldset>
        </h:form>

或

<h:form enctype="multipart/form-data">
    <pou:messages showDetail="true"/>

    <pou:fileUpload value="#{siteFormManager.file}" mode="simple"/>

    <pou:commandButton value="Submit" ajax="false" actionListener="#{siteFormManager.upload}" action="#{siteFormManager.uploadAction}"/>
</h:form>

在我的豆子里

@Component
@Scope(value = "request")
public class SiteFormManager {

    private static final Logger logger = LoggerFactory.getLogger(SiteFormManager.class);

    /**
     * Le file to upload
     */
    private UploadedFile file;

    public void handleFileUpload(FileUploadEvent event) {
        final UploadedFile lfile = event.getFile();
        logger.debug("SiteFormManager::handleFileUpload {} --> File equals {}", event, lfile);
    }

    public void handleFileUpload() {
        logger.debug("SiteFormManager::handleFileUpload without params");
    }

    public String uploadAction() {
        logger.debug("SiteFormManager::uploadAction --> File equals {}", file);
        return null;
    }

    public UploadedFile getFile() {
        return file;
    }

    public void setFile(UploadedFile file) {
        this.file = file;
    }
}

问题是我的bean中的文件总是为null！我尝试过Tomcat 7并没有任何改变。 我已经尝试了Richfaces的fileUpload组件并且它可以工作，但我不会包含两个组件库以避免冲突。

我在Netbeans 7上调试我的应用程序并在FileUploadFilter :: doFilter上插入一个断点。我注意到doFilter被调用了两次。第一次很好地创建MultipartRequest，解析表单的输入并检测文件。 但第二次请求似乎消耗了，而MultipartRequest中没有任何内容。 Primefaces FileUploadRenderer使用第二个MultipartRequest，因此该文件中不存在任何文件。

FileUploadFilter被调用两次是否正常？如何使fileUpload组件工作？

解

我只更改了web.xml，在prettyfaces过滤器中添加了ASYNC并删除了所有  文件上传过滤器中的调度程序。

最终的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- Use this definition if using a Java EE 6 container This also stops Eclipse
    from complaining that 3.0 is not a valid version <web-app version="3.0" 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_3_0.xsd"> -->
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    version="2.5">

    <!-- Theme pour prime -->
    <context-param>
        <param-name>primefaces.THEME</param-name>
        <param-value>glass-x</param-value>
    </context-param>

    <!-- The definition of the Root Spring Container shared by all Servlets
        and Filters -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            /WEB-INF/spring/applicationContext.xml
            /WEB-INF/spring/security-app-context.xml
        </param-value>
    </context-param>

    <context-param>
        <param-name>javax.faces.DEVELOPMENT</param-name>
        <param-value>false</param-value>
    </context-param>

    <context-param>
        <param-name>javax.faces.FACELETS_SKIP_COMMENTS</param-name>
        <param-value>true</param-value>
    </context-param>


    <!-- jboss-el -->
    <context-param>
        <param-name>com.sun.faces.expressionFactory</param-name>
        <param-value>org.jboss.el.ExpressionFactoryImpl</param-value>
    </context-param>

    <filter>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
        <init-param>
            <param-name>thresholdSize</param-name>
            <param-value>51200</param-value>
        </init-param>

        <init-param>
            <param-name>uploadDirectory</param-name>
            <param-value>/tmp/primefacesFileupload</param-value>
        </init-param>
    </filter>

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

<!--    Filter for setting all the requests and responses to UTF-8 encoding-->
    <filter>
        <filter-name>spring-encoding-filter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>spring-encoding-filter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <filter>
        <filter-name>Spring OpenEntityManagerInViewFilter</filter-name>
        <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>Spring OpenEntityManagerInViewFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


    <!-- Localisation -->
    <filter>
        <filter-name>localizationFilter</filter-name>
        <filter-class>org.springframework.web.filter.RequestContextFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>localizationFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


    <!-- Spring security -->
    <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>


    <!-- Pretty faces -->
    <filter>
        <filter-name>Pretty Filter</filter-name>
        <filter-class>com.ocpsoft.pretty.PrettyFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>Pretty Filter</filter-name>
        <url-pattern>/*</url-pattern>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>ERROR</dispatcher>
        <dispatcher>ASYNC</dispatcher>
    </filter-mapping>

    <!-- Creates the Spring Container shared by all Servlets and Filters -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- place constraints on a single user's ability to log in to your application -->
    <listener>
        <listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class>
    </listener>

    <!-- Processes application requests -->
    <servlet>
        <servlet-name>appServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/spring/app/servlet-context.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>appServlet</servlet-name>
        <url-pattern>/spring/</url-pattern>
    </servlet-mapping>

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

    <servlet>
        <servlet-name>Resource Servlet</servlet-name>
        <servlet-class>org.primefaces.resource.ResourceServlet</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>Resource Servlet</servlet-name>
        <url-pattern>/primefaces_resource/*</url-pattern>
    </servlet-mapping>

    <resource-ref>
        <res-ref-name>jsf/ProjectStage</res-ref-name>
        <res-type>java.lang.String</res-type>
        <jndi-name>javax.faces.PROJECT_STAGE</jndi-name>
    </resource-ref>

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

谢谢你。

Answer 1

我相信您需要将ASYNC调度程序添加到您的PrettyFaces过滤器映射中：

<!-- Pretty faces -->
<filter>
    <filter-name>Pretty Filter</filter-name>
    <filter-class>com.ocpsoft.pretty.PrettyFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>Pretty Filter</filter-name>
    <url-pattern>/*</url-pattern>
    <dispatcher>FORWARD</dispatcher>
    <dispatcher>REQUEST</dispatcher>
    <dispatcher>ERROR</dispatcher>
    <dispatcher>ASYNC</dispatcher>
</filter-mapping>

如果我没有弄错的话，PrimeFaces上传组件会使用ASYNC上传。