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    <p>Here, it is for your reference.</p> <p>upload.xhtml</p> <pre><code> &lt;h:form enctype="multipart/form-data"&gt; &lt;p:fileUpload value="#{PrimefacesFileUpload.uploadedFile}" mode="simple" sizeLimit="50000" allowTypes="/(\\\\\\\\./\\\\\\\\/)(gif|jpe?g|png|txt)$/"/&gt; &lt;p:growl id="messages" showDetail="true"/&gt; &lt;p:commandButton value="Submit" actionListener="#{PrimefacesFileUpload.upload}" ajax="false"/&gt; &lt;/h:form&gt; </code></pre> <p>PrimefacesFileUpload.java</p> <pre><code>@ManagedBean(name = "PrimefacesFileUpload") public class PrimefacesFileUpload { private UploadedFile uploadedFile; public void setUploadedFile(UploadedFile uploadedFile) { this.uploadedFile = uploadedFile; } public UploadedFile getUploadedFile() { return uploadedFile; } public void upload(ActionEvent event) { String fileName = uploadedFile.getFileName(); byte[] content = uploadedFile.getContents(); String contentType = uploadedFile.getContentType(); // Keep upload file FacesContext.getCurrentInstance().addMessage("messages", new FacesMessage("Successful! " + uploadedFile.getFileName() + " is uploaded.")); } } </code></pre> <p>web.xml - Make sure to config </p> <pre><code>&lt;filter&gt; &lt;filter-name&gt;PrimeFaces FileUpload Filter&lt;/filter-name&gt; &lt;filter-class&gt;org.primefaces.webapp.filter.FileUploadFilter&lt;/filter-class&gt; &lt;init-param&gt; &lt;param-name&gt;thresholdSize&lt;/param-name&gt; &lt;param-value&gt;51200&lt;/param-value&gt; &lt;/init-param&gt; &lt;/filter&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;PrimeFaces FileUpload Filter&lt;/filter-name&gt; &lt;servlet-name&gt;Faces Servlet&lt;/servlet-name&gt; &lt;/filter-mapping&gt; </code></pre>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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