Primesfaces文件上传不适用于jdk 1.7和glassfish 3.1.2.2

Question

我在我的笔记本电脑上开发了一个Web应用程序（使用JDK 1.8，primefaces 5.0和glassfish 4.1）并部署在一台服务器上（安装了JDK 1.7和glassfish 3.1），primefaces fileupload在我的笔记本电脑上工作，但是当我的笔记本电脑上有一个nullpointer异常时部署在服务器上。这是我的页面：

<p:fileUpload update="pimage" allowTypes="/(\.|\/)(gif|jpe?g|png)$/" 
value="#{newUserBean.file}" required="true"requiredMessage="Select a picture to upload"  mode="simple"/>
<h:commandButton style="width: 150px;height: 40px" value="Submit" actionListener="#{newUserBean.save()}">
 <f:ajax execute="@all" render="@form"/>
</h:commandButton>

这是我的保存方法：

public void save() {
        String url = null;
        try {
            //String fullname = getSurname() + " "+ getOtherNames();
            Map<String, String> map = new NewUserEntity().createUser(1, getUserName(), getSurname(), getOtherNames(), getJob(), getUserGroup(), getPassword(), getEmail(),
                    Integer.parseInt(getStaffID()), getDateOfBirth(), getAddress(), getPhoneNo(),
                    getDepartment(), getAcademicQualification(), getGrade(), getProfQuailification(), getCourse(), file.getInputstream(), getSex(), Integer.parseInt(getExtension()));

            if (map.get("responseMessage").equalsIgnoreCase("User Added Successfully")) {
                url = "addUser.xhtml?faces-redirect=true";
            } else {
                url = "";
            }
            FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_INFO, "", map.get("responseMessage"));
            FacesContext.getCurrentInstance().addMessage(null, msg);
        } catch (Exception e) {
            e.printStackTrace();
            FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_FATAL, "Error", e.toString());
            FacesContext.getCurrentInstance().addMessage(null, msg);
        }
        //return url;
    }

这是我的web.xml文件的一部分

<context-param>
        <param-name>primefaces.UPLOADER</param-name>
        <param-value>commons</param-value>
    </context-param>
    
    <error-page>
        <exception-type>
            javax.faces.application.ViewExpiredException
        </exception-type>
        <location>/Web Pages/Login.xhtml</location>
    </error-page>
    
    <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>c:/tmp</param-value>
        </init-param>
    </filter>
    
    <filter-mapping>
        <filter-name>PrimeFaces FileUpload Filter</filter-name>
        <servlet-name>Faces Servlet</servlet-name>
    </filter-mapping>