分类导航
程序笔记程序问答

jsf 2.0 Primefaces多个Fileupload不记得上传的文件

程序问答   发布时间：2022-06-01  发布网站：大佬教程  code.js-code.com
大佬教程收集整理的这篇文章主要介绍了jsf 2.0 Primefaces多个Fileupload不记得上传的文件，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

如何解决jsf 2.0 Primefaces多个Fileupload不记得上传的文件？

开发过程中遇到jsf 2.0 Primefaces多个Fileupload不记得上传的文件的问题如何解决？下面主要结合日常开发的经验，给出你关于jsf 2.0 Primefaces多个Fileupload不记得上传的文件的解决方法建议，希望对你解决jsf 2.0 Primefaces多个Fileupload不记得上传的文件有所启发或帮助；

这是由JsF实现MyFaces 2.2.0-20130426中的错误引起的。

当我尝试使用MyFaces 2.2.0-beta（目前可在myfaces.apache.org上使用）和Mojarra 2.2.4（目前可通过javaserverfaces.java.net上使用）时，它对我有用。

正如对问题的评论所证实的，它也可以为您服务。

解决方法

我已经在本文中解决了其他一些问题（fileuploadhandler现在正在工作），其中我的代码如下：

豆：

@managedBean
@ViewScoped
public class TempBean implements serializable{

    private static final long serialVersionUID = -70753689043016662L;
    private List<String> names; //to remember which files have been uploaded

    public void load(){
        System.out.println("@prerender");
    }

    public TempBean() {
        super();
        System.out.println("@constructor");
        names = new ArrayList<String>();
    }

    @PostConstruct
    public void pc(){
        System.out.println("@postconstruct");
    }

    public void handleFileUpload(FileUploadEvent event) { 
        String filename = event.getFile().getFilename();
        System.out.println("INCOMING FILE: " + fileName);
        names.add(fileName);

        if(!names.isEmpty()){
            System.out.println("Files uploaded:");
            for(String n : names){
                System.out.println("# " + n);
            }
            System.out.println();
        }
   }

    public List<String> getNames() {
        return names; 
    }

    public void setNames(List<String> names) {
        this.names = names;
    }

}

xhtml页面：

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
        xmlns:f="http://java.sun.com/jsf/core"
        xmlns:h="http://java.sun.com/jsf/html"
        xmlns:ui="http://java.sun.com/jsf/facelets"
        xmlns:p="http://primefaces.org/ui" >

    <h:head> 
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    </h:head>

    <f:event type="preRenderView" listener="#{tempBean.loaD}" />
    <h:body>

        <h:form>
            <p:fileUpload
                fileUploadListener="#{tempBean.handleFileUploaD}"
                mode="advanced" dragDropSupport="true" multiple="true" update=":overview" />
        </h:form>

        <h:panelGroup id="overview">
            <ui:repeat var="file" value="#{tempBean.names}">
                #{filE} <br/>
            </ui:repeat>
        </h:panelGroup>

    </h:body>
</html>

我现在面临的问题（或我提出一个新问题的原因）是，当我上传多个（例如三个）文件时，只有其中一个被追加到空列表中。当我重新上传剩余的两个文件时，再次，只有其中一个附加到列表中。

有趣的是为每个文件都调用handleFileUpload（&Hellip;）。

当我同时上传三个文件时，这是控制台输出：

@constructor
@postconstruct
@prerender
INCOMING FILE: test1.jpe
INCOMING FILE: test3.jpe
Files uploaded:
INCOMING FILE: test2.jpe
# test3.jpe
-END OF LIST-
Files uploaded:
# test1.jpe
Files uploaded:
# test2.jpe
-END OF LIST-
-END OF LIST-
@prerender
@prerender
@prerender

如何使fileupload-component正常运行？这是bug还是ajax问题？

这是我的web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app 
xmlns:xsi="http://www.w3.org/2001/XMLscheR_929_11845@a-instance" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
xsi:scheR_929_11845@aLOCATIOn="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 
id="WebApp_ID" version="3.0" >

  <display-name>TestProjekt</display-name>
  <welcome-file-list>
    <welcome-file>test.xhtml</welcome-file>
  </welcome-file-list>
  <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>/faces/*</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.faces</url-pattern>
    </servlet-mapping>
    <servlet-mapping> 
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.xhtml</url-pattern>
    </servlet-mapping>

    <context-param>
        <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
        <param-value>resources.application</param-value>
    </context-param>
    <context-param>
        <description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
        <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
        <param-value>client</param-value>
    </context-param>
    <context-param>
        <param-name>facelets.SKIP_COMMENTS</param-name>
        <param-value>true</param-value>
    </context-param>

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

  <context-param>
    <description>
    This parameter tells MyFaces if javascript code should be allowed in
    the rendered HTML output.
    If javascript is allowed,command_link anchors will have javascript code
    that submits the corresponding form.
    If javascript is not allowed,the state saving info and nested parameters
    will be added as url parameters.
    Default is 'true'</description>
    <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
    <param-value>true</param-value>
  </context-param>

      <context-param> 
        <description> 
        If true,rendered HTML code will be formatted,so that it is 'human-readable'
        i.e. additional line separators and whitespace will be written,that do not
        influence the HTML code.
        Default is 'true'</description>
        <param-name>org.apache.myfaces.PRETTY_HTML</param-name>
        <param-value>true</param-value>
      </context-param>

      <context-param>
        <param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
        <param-value>false</param-value>
      </context-param>

      <context-param>
        <description>
        If true,a javascript function will be rendered that is able to restore the
        former vertical scroll on every request. Convenient feature if you have pages
        with long lists and you do not want the browser page to always jump to the top
        if you trigger a link or button action that stays on the same page.
        Default is 'false'
        </description>
        <param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
        <param-value>true</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>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>

</web-app>

和我的faces.config：

<?xml version="1.0" encoding="UTF-8"?>
<faces-config
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLscheR_929_11845@a-instance"
    xsi:scheR_929_11845@aLOCATIOn="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
    version="2.0">

</faces-config>

大佬总结

以上是大佬教程为你收集整理的jsf 2.0 Primefaces多个Fileupload不记得上传的文件全部内容，希望文章能够帮你解决jsf 2.0 Primefaces多个Fileupload不记得上传的文件所遇到的程序开发问题。

如果觉得大佬教程网站内容还不错，欢迎将大佬教程推荐给程序员好友。

本图文内容来源于网友网络收集整理提供，作为学习参考使用，版权属于原作者。
如您有任何意见或建议可联系处理。小编QQ：384754419，请注明来意。
标签：2.0jsf
猜你在找的程序问答相关文章
其他相关热搜词更多
phpJavaPython程序员load中如何string使用参数jquery开发安装listlinuxiosandroid工具javascriptcap