p:在p:对话框中放置在p:dataTable中时,不会调用commandLink [英] p:commandLink not invoked when placed in p:dataTable in p:dialog
问题描述
我使用的是原文,我想从数据库
下载不同格式(pdf,jpg,png)的文件,但是我没有成功实现这个
我看到很多话题像这样,但他们的方法不适合我
这里是html:
I use primefaces and I want to download a file with different formats(pdf, jpg, png, ) from database but I don't succed to realise this I have seen a lot of topic like this but their methods don't work for me here is the html :
<ui:repeat value="#{histCommController.selectedCommande.listFichiers}" var="jjjjj">
<tr>
<td>
<h:outputLabel style="font-weight: bold;" value="#{jjjjj.nom}" />
</td>
<td>
<h:outputLabel style="font-weight: bold;" value="#{jjjjj.taille}" />
</td>
<td>
<p:commandButton id="downloadLink" value="Download" ajax="false"
icon="ui-icon-arrowthichk-s">
<p:fileDownload value="#{jjjjj.convertFichieru}" />
</p:commandButton>
</td>
</tr>
</ui:repeat>
这里是java:
public StreamedContent convertFichier(byte[] bytes) {
InputStream is = new ByteArrayInputStream(bytes);
System.out.println("size file : "+bytes.length);
StreamedContent image = new DefaultStreamedContent(is);
System.out.println("dans le convertisseur : "+image.getContentType());
return image;
}
always,image.getContentType()返回null
和字节。长度不为空
always, image.getContentType() return null and bytes.length not null
你有什么想法
谢谢
我只是知道问题,我将下载链接放在对话框中,因为当我在对话框外面进行测试时,
这里是测试它的工作原理:
I just know the problem, I put the download link in dialog box, because when i make a test outside the dialog it works here is the test that it works :
<h:form>
<p:commandLink id="downloadLink" value="Download" ajax="false">
<p:fileDownload value="#{histCommController.test}" />
</p:commandLink>
</h:form>
这里是对话框内的测试:
and here is the test inside the dialog :
<p:dialog header="Car Detail" widgetVar="carDialog" resizable="false" id="carDlg"
showEffect="fade" hideEffect="explode" modal="true">
<table id="gradient-style" >
<tr style="border: hidden;">
<th>
<h:outputLabel value="Model:" />
</th>
<td>
<h:outputLabel style="font-weight: bold;" value="#{histCommController.selectedCommande.id}" />
</td>
</tr>
<tr style="border: hidden;">
<th>
<h:outputLabel value="Year:" />
</th>
<td>
<h:outputLabel style="font-weight: bold;" value="#{histCommController.selectedCommande.etat}" />
</td>
</tr>
<tr style="border: hidden;">
<th>
<h:outputLabel value="Manufacturer:" />
</th>
<td>
<h:outputLabel style="font-weight: bold;" value="#{histCommController.selectedCommande.dateEnvoi}" />
</td>
</tr>
<tr style="border: hidden;">
<th>
<h:outputLabel value="Color:" />
</th>
<td>
<h:outputLabel style="font-weight: bold;" value="#{histCommController.selectedCommande.dateLivraisonRecommande}" />
</td>
</tr>
</table>
<table id="gradient-style" >
<th>Nom Fichier</th><th>Taille</th><th>Télécharger</th>
<ui:repeat value="#{histCommController.selectedCommande.listFichiers}" var="jjjjj">
<tr>
<td>
<h:outputLabel style="font-weight: bold;" value="#{jjjjj.nom}" />
</td>
<td>
<h:outputLabel style="font-weight: bold;" value="#{jjjjj.taille}" />
</td>
<td>
<p:commandLink id="downloadLink" value="Download" ajax="false">
<p:fileDownload value="#{histCommController.test}" />
</p:commandLink>
</td>
</tr>
</ui:repeat>
</table>
</p:dialog>
后者不起作用
你有任何想法如何使对话框内的下载链接工作
do you any idea how to make working the download link inside the dialog
提前感谢你
推荐答案
您应该自己设置内容类型。请查看 DefaultStreamedContent的构造函数。
所以而不是
You should set the content type yourself. Take a look at the constructors of DefaultStreamedContent. So instead of
StreamedContent image = new DefaultStreamedContent(is);
您应该写
StreamedContent image = new DefaultStreamedContent(is, "image/jpeg", "fileName.jpg");
确保使用正确的内容类型,以及文件名扩展名。
Make sure you use the proper content type, and extension for filename.
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