本文介绍了消息:PrimeFaces Extensions DocumentViewer中缺少PDF的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
这是我的代码JAVA:---
This is my code JAVA:---
public StreamedContent getTempPdfFile() throws IOException {
File testPdfFile = Paths.get("D:\\AFC150_20180819_0103.pdf").toFile();
return new DefaultStreamedContent(new FileInputStream(testPdfFile), "application/pdf",
"AFC150_20180819_0103");
}
JSF:---
<pe:documentViewer height="500" width = "1000" url="#{realReport.tempPdfFile}"/>
错误:-PDF.js v1.0.21(内部版本:f954cde)消息:缺少PDF" http://localhost:8080/BACKEND_SAWS_WEB/javax.faces.resource/documentviewer/org.primefaces.model.DefaultStreamedContent@69573926?pfdrid_c = false& uid = 4981c898-59bf-49f2 -9c99-367855ec2658 ".
error:--PDF.js v1.0.21 (build: f954cde)Message: Missing PDF "http://localhost:8080/BACKEND_SAWS_WEB/javax.faces.resource/documentviewer/org.primefaces.model.DefaultStreamedContent@69573926?pfdrid_c=false&uid=4981c898-59bf-49f2-9c99-367855ec2658".
推荐答案
我尝试使用以下方法:
- Java EE 7
- GlassFish 4.1.2
- PrimeFaces 6.2
- PrimeFaces-Extensions 6.2.9
在Bean(类)代码处:
At the bean (class) code:
@ManagedBean
@ApplicationScoped
public class DocumentViewerController {
范围是@ApplicationScoped.我有一个私有的 StreamedContent 属性.还有两种主要的公共方法:
The scope is @ApplicationScoped. I have a private StreamedContent attribute. And two main public methods:
第一个方法: 它是从 p:commandButton 的actionListener属性调用的.该方法接收一个参数(以我为例).
First method: It's called from actionListener attribute of a p:commandButton. The method receive a parameter (in my case).
public void onPrerender(Tramite tramite) {
tramiteSelected = tramite;
numeroTramite = tramite.getNumero();
contrato = tramite.getContrato();
}
第二种方法: :它是通过对话框组件内的pe:documentViewer使用的，例如:
Second method: It's used from a pe:documentViewer inside a dialog component, like this:
<pe:documentViewer id="certificadoViewer"
height="500px"
width="750px"
cache="false"
value="#{documentViewerController.certificado}"
download="certificado_#{documentViewerController.numero}_#{documentViewerController.contrato}.pdf" />
注意:第二种方法的工作方式类似于属性(getter和setter).就是把戏.
Note: The 2nd method works like a property (getter and setter). THAT'S THE TRICK.
我项目的最终代码是:
#Bean(DocumentViewerController.java):
package com.epmrpsd.certificado.consulta.controladores;
import com.epmrpsd.certificado.consulta.controladores.util.JsfUtil;
import com.epmrpsd.certificado.consulta.entidades.Tramite;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import javax.faces.bean.ApplicationScoped;
import javax.faces.bean.ManagedBean;
import org.primefaces.model.DefaultStreamedContent;
import org.primefaces.model.StreamedContent;
/**
*
* @author pbonilla
*/
@ManagedBean
@ApplicationScoped
public class DocumentViewerController {
private StreamedContent content;
private Integer numeroTramite;
private Integer contrato;
private Tramite tramiteSelected;
// Path where the file exists
private String pdfPathDirectory = "C:\\Users\\<user>\\certificados\\";
public void onPrerender(Tramite tramite) {
tramiteSelected = tramite;
numeroTramite = tramite.getNumero();
contrato = tramite.getContrato();
}
public StreamedContent getCertificado() {
InputStream stream = null;
try {
File file = new File(pdfPathDirectory + numeroTramite + "_" + contrato + ".pdf");
if (file.exists()) {
stream = new FileInputStream(file);
} else {
JsfUtil.addErrorMessage("Error", "No se ha encontrado el archivo");
}
this.content = new DefaultStreamedContent(stream, "application/pdf");
} catch (FileNotFoundException fnfex) {
JsfUtil.addErrorMessage("Error", "No se ha encontrado el archivo. Error: " + fnfex.getMessage());
fnfex.printStackTrace();
} catch (Exception e) {
JsfUtil.addErrorMessage("Error", "Se ha generado un error al cargar el certificado. Error: " + e.getMessage());
e.printStackTrace();
}
return content;
}
public void setCertificado(StreamedContent contenido) {
content = contenido;
}
public Tramite getTramiteSelected() {
return tramiteSelected;
}
public void setTramiteSelected(Tramite tramiteSelected) {
this.tramiteSelected = tramiteSelected;
}
public Integer getNumero() {
return numeroTramite;
}
public void setNumero(Integer numeroTramite) {
this.numeroTramite = numeroTramite;
}
public Integer getContrato() {
return contrato;
}
public void setContrato(Integer contrato) {
this.contrato = contrato;
}
}
#视图(index.xhtml):
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:pe="http://primefaces.org/ui/extensions">
<h:head>
<title>Consulta de Certificados Digitales</title>
<h:outputStylesheet library="css" name="epmrpsd.css" />
<h:outputStylesheet library="webjars" name="font-awesome/5.5.0/css/all-jsf.css" />
<h:outputStylesheet library="css" name="jsfcrud.css"/>
<h:outputScript library="js" name="jsfcrud.js"/>
<link rel="shortcut icon" type="image/png" href="#{resource['images/logo.png']}"/>
</h:head>
<h:body>
<div id="background" style="position: fixed;">
<h:form id="formCertificados">
<div class="ui-g" style="margin-top: 25px;">
<div class="ui-g-1"></div>
<div class="ui-g-10">
<p:growl id="mensajes" />
<Extra code> ...
<p:outputPanel id="pnlCertificado">
<p:dataTable id="tramitesTable"
value="#{tramiteController.items}"
var="tramite"
rowKey="#{tramite.id}"
selectionMode="single"
selection="#{tramiteController.selected}"
emptyMessage="No se encontraron trámites con los criterios dados"
rows="10"
rowsPerPageTemplate="10,20,30,40,50">
<p:column headerText="Número Trámite" >
<h:outputText value="#{tramite.numero}" />
</p:column>
<p:column headerText="Descripción" >
<h:outputText value="#{tramite.tipo.descripcion}" />
</p:column>
<p:column headerText="Número Contrato" >
<h:outputText value="#{tramite.contrato}" />
</p:column>
<p:column style="text-align: center" headerText="Acción" >
<center>
<p:commandButton id="viewCertificado"
styleClass="ui-priority-primary"
value="Ver certificado"
actionListener="#{documentViewerController.onPrerender(tramite)}"
update=":ViewCertificadoForm"
oncomplete="PF('ViewCertificadoDialog').show()" />
</center>
</p:column>
</p:dataTable>
</p:outputPanel>
</div>
<div class="ui-g-1"></div>
</div>
</h:form>
<ui:include src="ViewCertificado.xhtml"/>
</div>
</h:body>
</html>
该视图的最后一个组件是(ViewCertificado.xhtml):
And the final component for the view is (ViewCertificado.xhtml):
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:f="http://xmlns.jcp.org/jsf/core"
xmlns:p="http://primefaces.org/ui"
xmlns:pe="http://primefaces.org/ui/extensions">
<ui:composition>
<p:dialog id="ViewCertificadoDlg"
widgetVar="ViewCertificadoDialog"
modal="true"
resizable="false"
appendTo="@(body)"
header="Certificado #{documentViewerController.contrato}">
<h:form id="ViewCertificadoForm">
<h:panelGroup id="display">
<p:panelGrid columns="1" rendered="#{documentViewerController.tramiteSelected != null}">
<pe:documentViewer id="certificadoViewer"
height="500px"
width="750px"
cache="false"
value="#{documentViewerController.certificado}"
download="certificado_#{documentViewerController.numero}_#{documentViewerController.contrato}.pdf" />
</p:panelGrid>
<p:commandButton value="Cerrar" onclick="ViewCertificadoDialog.hide()"/>
</h:panelGroup>
</h:form>
</p:dialog>
</ui:composition>
</html>
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