RichFaces文件上传和h：消息问题 [英] RichFaces fileupload and h:message problem

问题描述

我正在使用RichFaces 4.我的问题是，消息根本不出现。如果我使用rich：message这个消息会短暂出现，然后消失。

这是控制器：

pre > public void uploadListener（final FileUploadEvent event）throws IOException
{
final UploadedFile item = event.getUploadedFile（）;

final FacesContext context = FacesContext.getCurrentInstance（）;
final Application application = context.getApplication（）;
final String messageBundleName = application.getMessageBundle（）;
final Locale locale = context.getViewRoot（）。getLocale（）;
final ResourceBundle resourceBundle = ResourceBundle.getBundle（messageBundleName，locale）;

final String msg = resourceBundle.getString（upload.failed）;
final String detailMsgPattern = resourceBundle.getString（upload.failed_detail）;

try
{
CSVImporter.doImport（item.getInputStream（），registry，item.getName（））;

catch（ParseException e）
{
final Object [] params = {item.getName（），e.​​getMessage（）};
final String detailMsg = MessageFormat.format（detailMsgPattern，params）;
final FacesMessage facesMsg = new FacesMessage（FacesMessage.SEVERITY_ERROR，msg，detailMsg）;

context.addMessage（uploadForm：uploader，facesMsg）;

catch（TokenMgrError e）
{
final Object [] params = {item.getName（），e.​​getMessage（）};
final String detailMsg = MessageFormat.format（detailMsgPattern，params）;
final FacesMessage facesMsg = new FacesMessage（FacesMessage.SEVERITY_ERROR，msg，detailMsg）;

context.addMessage（uploadForm：uploader，facesMsg）;


$ / code $ / pre



这就是视图：



 < h：form id =uploadFormenctype =multipart / form-data> 
 < rich：fileUpload id =uploader
 fileUploadListener =＃{itemController.uploadListener}
 maxFilesQuantity =1
 acceptedTypes =csv> 
< a4j：ajax event =uploadcompleteexecute =@ nonerender =items，message/> 
< / rich：fileUpload> 
< / h：表格> 
  

在这两种情况下，Firebug报告一个空的消息字段被发送。 b $ b

 <？xml version ='1.0'encoding ='UTF-8'？> 
< partial-response>< changes>< update id =uploadForm：message><！[CDATA [< span span =uploadForm：message>< / span>] ]< / update>< update id =j_idt16：items><！[CDATA [< table id =j_idt16：items> 
< thead> 
< tr> 
 标题
< / th> 
< / tr> 
< / thead> 
< tbody> 
< tr>< td>< / td>< / tr>< / tbody> 
< / table> 
]]>< / update>< update id =javax.faces.ViewState><！[CDATA [8859542538952100446：6041172679113548382]]>< / update>< / changes> < /部分响应> 
  




解决方案

问题是a4j：ajax标记。这是发送第二个请求，消息被清除。这样做：



 < h：form id =uploadFormenctype =multipart / form-data> 
   fileUploadListener =＃{itemController.uploadListener}
 maxFilesQuantity =1
 acceptedTypes =csv
 render =items，message/> 
< / h：表格> 
  




I am using RichFaces 4. My problem is that the message does not appear at all. If I use rich:message the message appears briefly then dissapears.

This is the controller:

public void uploadListener(final FileUploadEvent event) throws IOException
{
    final UploadedFile item = event.getUploadedFile();

    final FacesContext context = FacesContext.getCurrentInstance();
    final Application application = context.getApplication();
    final String messageBundleName = application.getMessageBundle();
    final Locale locale = context.getViewRoot().getLocale();
    final ResourceBundle resourceBundle = ResourceBundle.getBundle(messageBundleName, locale);

    final String msg = resourceBundle.getString("upload.failed");
    final String detailMsgPattern = resourceBundle.getString("upload.failed_detail");

    try
    {
        CSVImporter.doImport(item.getInputStream(), registry, item.getName());
    }
    catch (ParseException e)
    {
        final Object[] params = {item.getName(), e.getMessage()};
        final String detailMsg = MessageFormat.format(detailMsgPattern, params);
        final FacesMessage facesMsg = new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, detailMsg);

        context.addMessage("uploadForm:uploader", facesMsg);
    }
    catch (TokenMgrError e)
    {
        final Object[] params = {item.getName(), e.getMessage()};
        final String detailMsg = MessageFormat.format(detailMsgPattern, params);
        final FacesMessage facesMsg = new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, detailMsg);

        context.addMessage("uploadForm:uploader", facesMsg);
    }
}

And this is the view:

<h:form id="uploadForm" enctype="multipart/form-data">
    <h:message id="message" showDetail="true" for="uploader" errorClass="error" warnClass="warning" infoClass="info" fatalClass="fatal"/>
    <rich:fileUpload id="uploader"
             fileUploadListener="#{itemController.uploadListener}"
                 maxFilesQuantity="1"
                 acceptedTypes="csv">
        <a4j:ajax event="uploadcomplete" execute="@none" render="items, message" />
    </rich:fileUpload>
</h:form>

In both cases Firebug reports an empty message field being sent.

<?xml version='1.0' encoding='UTF-8'?>
<partial-response><changes><update id="uploadForm:message"><![CDATA[<span id="uploadForm:message"></span>]]></update><update id="j_idt16:items"><![CDATA[<table id="j_idt16:items">
<thead>
<tr>
<th scope="col">
                        Titles
                    </th>
</tr>
</thead>
<tbody>
<tr><td></td></tr></tbody>
</table>
]]></update><update id="javax.faces.ViewState"><![CDATA[8859542538952100446:6041172679113548382]]></update></changes></partial-response>

解决方案

The problem was the a4j:ajax tag. It was sending a second request, and the messages were cleared. This works:

<h:form id="uploadForm" enctype="multipart/form-data">
    <h:message id="message" showDetail="true" for="uploader" errorClass="error" warnClass="warning" infoClass="info" fatalClass="fatal"/>
    <rich:fileUpload id="uploader"
             fileUploadListener="#{itemController.uploadListener}"
             maxFilesQuantity="1"
             acceptedTypes="csv"
             render="items, message" />
</h:form>

这篇关于RichFaces文件上传和h：消息问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！