重要提示：此主题中讨论的问题在2014年10月6日星期一(从几分钟前开始)的
PrimeFaces 5.1 final(社区发布)
released已经是
fixed。我试图在
JSF 2.2.8-02(或
api，
@L_301_5@)。
因此，如果你碰巧使用该版本(或更高版本，无需提及)，你甚至不需要再读这个问题。
我有一个web应用程序运行
> GlassFish 4.0
> Mojarra 2.2.4
> PrimeFaces 4.0 final
除了用AJAX文件上传之外的所有东西都很好。以下xhtml文件通过由PrimeFaces命令按钮触发的AJAX请求发送多部分内容。
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:p="http://primefaces.org/ui"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<title>Test</title>
</h:head>
<h:body>
<h:form prependId="true" enctype="multipart/form-data">
<p:fileUpload id="txtCatImage"
value="#{testManagedBean.uploadedFile}"
mode="advanced"
dragDropSupport="true"
fileLimit="1"
sizeLimit="100000"
multiple="false"
allowTypes="/(\.|\/)(gif|jpe?g|png)$/"
fileUploadListener="#{testManagedBean.fileUploadListener}"/>
<p:message for="txtCatImage" showSummary="false"/>
<p:commandButton id="btnSubmit"
actionListener="#{testManagedBean.insert}"
ajax="true" icon="ui-icon-check" value="Save"/>
</h:form>
</h:body>
</html>
测试托管bean：
@ManagedBean
@ViewScoped
public final class TestManagedBean implements Serializable {
private static final long serialVersionUID = 1L;
private UploadedFile uploadedFile;
public TestManagedBean(){}
public UploadedFile getUploadedFile() {
return uploadedFile;
}
public void setUploadedFile(UploadedFile uploadedFile) {
this.uploadedFile = uploadedFile;
}
public void fileUploadListener(FileUploadEvent event){
uploadedFile=event.getFile();
}
public void insert(){
if(uploadedFile!=null){
System.out.println(uploadedFile.getFileName());
}
else{
System.out.println("The file object is null.");
}
}
}
当文件从文件浏览器上传时，它在其监听器 – fileUploadListener()中显示文件名。
上传文件后，当按下给定的命令按钮(ajax =“true”)时，会导致抛出以下异常。
WARNING: javax.servlet.ServletException: The request content-type is not a multipart/form-data
javax.faces.FacesException: javax.servlet.ServletException: The request content-type is not a multipart/form-data
at org.primefaces.component.fileupload.NativeFileUploadDecoder.decode(NativeFileUploadDecoder.java:44)
at org.primefaces.component.fileupload.FileUploadRenderer.decode(FileUploadRenderer.java:44)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:831)
at javax.faces.component.UIInput.decode(UIInput.java:771)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1225)
at javax.faces.component.UIInput.processDecodes(UIInput.java:676)
at javax.faces.component.UIForm.processDecodes(UIForm.java:225)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1220)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1220)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:929)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:70)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at filter.NoCacheFilter.doFilter(NoCacheFilter.java:28)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
at org.glassfish.grizzly.strategies.WorkerThreadioStrategy.run0(WorkerThreadioStrategy.java:115)
at org.glassfish.grizzly.strategies.WorkerThreadioStrategy.access$100(WorkerThreadioStrategy.java:55)
at org.glassfish.grizzly.strategies.WorkerThreadioStrategy$WorkerThreadRunnable.run(WorkerThreadioStrategy.java:135)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
at java.lang.Thread.run(Thread.java:722)
Caused by: javax.servlet.ServletException: The request content-type is not a multipart/form-data
at org.apache.catalina.fileupload.Multipart.getPart(Multipart.java:187)
at org.apache.catalina.connector.Request.getPart(Request.java:4535)
at org.apache.catalina.connector.RequestFacade.getPart(RequestFacade.java:1095)
at org.primefaces.component.fileupload.NativeFileUploadDecoder.decodeAdvanced(NativeFileUploadDecoder.java:60)
at org.primefaces.component.fileupload.NativeFileUploadDecoder.decode(NativeFileUploadDecoder.java:37)
... 48 more
SEVERE: javax.servlet.ServletException: The request content-type is not a multipart/form-data
at org.apache.catalina.fileupload.Multipart.getPart(Multipart.java:187)
at org.apache.catalina.connector.Request.getPart(Request.java:4535)
at org.apache.catalina.connector.RequestFacade.getPart(RequestFacade.java:1095)
at org.primefaces.component.fileupload.NativeFileUploadDecoder.decodeAdvanced(NativeFileUploadDecoder.java:60)
at org.primefaces.component.fileupload.NativeFileUploadDecoder.decode(NativeFileUploadDecoder.java:37)
at org.primefaces.component.fileupload.FileUploadRenderer.decode(FileUploadRenderer.java:44)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:831)
at javax.faces.component.UIInput.decode(UIInput.java:771)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1225)
at javax.faces.component.UIInput.processDecodes(UIInput.java:676)
at javax.faces.component.UIForm.processDecodes(UIForm.java:225)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1220)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1220)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:929)
at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:78)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:70)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at filter.NoCacheFilter.doFilter(NoCacheFilter.java:28)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
at org.glassfish.grizzly.strategies.WorkerThreadioStrategy.run0(WorkerThreadioStrategy.java:115)
at org.glassfish.grizzly.strategies.WorkerThreadioStrategy.access$100(WorkerThreadioStrategy.java:55)
at org.glassfish.grizzly.strategies.WorkerThreadioStrategy$WorkerThreadRunnable.run(WorkerThreadioStrategy.java:135)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
at java.lang.Thread.run(Thread.java:722)
它只能在命令按钮的ajax属性设置为false – ajax =“false”时工作。
我已经将Mojarra版本降级到2.1.9在Tomcat 7.0.35。它与这个Mojarra版本以及PrimeFaces 4.0 final(和PrimeFaces 4.0 RC1)一起工作 – 用AJAX请求上传的文件。
我替换尝试了下面的Mojarra版本
> 2.2.0
> 2.2.1
> 2.2.2
> 2.2.3
> 2.2.4
在GlassFish 4.0中，但没有一个成功上传文件与AJAX请求，这是非常需要的，因为使用< p：rowEditor /> (例如，在每一行中的图像)在PrimeFaces DataTable总是基于AJAX。
我想保持GlassFish 4.0无论如何。我也试图降级Mojarra 2.1.9在GlassFish 4.0，但它无法创建捆绑以异常结束。 GlassFish 4.0似乎不适合Mojarra低于2.2.x.
那么，什么是造成此异常的原因 – PrimeFaces或JSF？只是困惑。在此给定环境中是否有任何解决方法来上传具有AJAX请求的文件？
编辑：
web.xml中的过滤器映射：
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<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>*.jsf</url-pattern>
</servlet-mapping>
问题仍然与Mojarra版本2.2.5(或api，impl)released在2014年1月8日保持不变。
再次尝试Mojarra版本2.2.6(或api，impl)released在2014年3月4日。问题保持不变。
仍然不工作在PrimeFaces 5.0最后released年5月05日。
我遇到过同样的问题。它似乎更关系到< p：commandButton>比< p：fileUpload>组件，因为它与< h：commandButton> (甚至与ajax)。
原文链接：https://www.f2er.com/ajax/160546.html你可以尝试：
<h:commandButton id="btnSubmit" actionListener="#{testManagedBean.insert}" value="Save">
<f:ajax execute="@all" render="@form"/>
</h:commandButton>
我不能告诉你为什么或如何工作，但它解决了我的问题。
当然的缺点是，你必须自己做造型，至少直到
Primefaces的家伙解决这个问题。
编辑：
在挖掘源代码，并做一些调试，如果弄清楚，实际上有两个请求(我尝试在< p：wizard />)。第一个是multipart / form-data，它实际上完成文件上传。它触发Bean中的fileUploadEvent。我的向导的下一个按钮是按下另一个形式用enctype application / www-urlencoded提交的。这导致异常。结论是，不同于我在注释中所写的抑制异常是一个有效的解决方案。这甚至可以以不包括改变Primefaces.jar的方式完成，如果家伙在未来的版本中解决这个问题，这是方便的。
所以这里是需要做的：
>创建一个新类com.yourpackage.fileupload.FileUploadRenderer
>将以下代码复制并粘贴到新类中：
package com.yourpackage.fileupload.fileupload;
import java.io.IOException;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.servlet.http.HttpServletRequest;
import org.primefaces.component.fileupload.CommonsFileUploadDecoder;
import org.primefaces.component.fileupload.FileUpload;
import org.primefaces.component.fileupload.NativeFileUploadDecoder;
import org.primefaces.config.ConfigContainer;
import org.primefaces.context.RequestContext;
import org.primefaces.expression.SearchExpressionFacade;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.HTML;
import org.primefaces.util.WidgetBuilder;
public class FileUploadRenderer extends CoreRenderer {
@Override
public void decode(FacesContext context,UIComponent component) {
FileUpload fileUpload = (FileUpload) component;
if (!fileUpload.isDisabled()) {
ConfigContainer cc = RequestContext.getCurrentInstance().getApplicationContext().getConfig();
String uploader = cc.getUploader();
boolean isAtLeastJSF22 = cc.isAtLeastJSF22();
if (uploader.equals("auto")) {
if (isAtLeastJSF22) {
if (isMultiPartRequest(context)) {
NativeFileUploadDecoder.decode(context,fileUpload);
}
} else {
CommonsFileUploadDecoder.decode(context,fileUpload);
}
} else if (uploader.equals("native")) {
if (!isAtLeastJSF22) {
throw new FacesException("native uploader requires at least a JSF 2.2 runtime");
}
NativeFileUploadDecoder.decode(context,fileUpload);
} else if (uploader.equals("commons")) {
CommonsFileUploadDecoder.decode(context,fileUpload);
}
}
}
@Override
public void encodeEnd(FacesContext context,UIComponent component) throws IOException {
FileUpload fileUpload = (FileUpload) component;
encodeMarkup(context,fileUpload);
if (fileUpload.getMode().equals("advanced")) {
encodeScript(context,fileUpload);
}
}
protected void encodeScript(FacesContext context,FileUpload fileUpload) throws IOException {
String clientId = fileUpload.getClientId(context);
String update = fileUpload.getUpdate();
String process = fileUpload.getProcess();
WidgetBuilder wb = getWidgetBuilder(context);
wb.initWithDomReady("FileUpload",fileUpload.resolveWidgetVar(),clientId,"fileupload");
wb.attr("auto",fileUpload.isAuto(),false)
.attr("dnd",fileUpload.isDragDropSupport(),true)
.attr("update",SearchExpressionFacade.resolveComponentsForClient(context,fileUpload,update),null)
.attr("process",process),null)
.attr("maxFileSize",fileUpload.getSizeLimit(),Long.MAX_VALUE)
.attr("fileLimit",fileUpload.getFileLimit(),Integer.MAX_VALUE)
.attr("invalidFileMessage",fileUpload.getInvalidFileMessage(),null)
.attr("invalidSizeMessage",fileUpload.getInvalidSizeMessage(),null)
.attr("fileLimitMessage",fileUpload.getFileLimitMessage(),null)
.attr("messageTemplate",fileUpload.getMessageTemplate(),null)
.attr("previewWidth",fileUpload.getPreviewWidth(),80)
.attr("disabled",fileUpload.isDisabled(),false)
.callback("onstart","function()",fileUpload.getOnstart())
.callback("onerror",fileUpload.getOnerror())
.callback("oncomplete",fileUpload.getOncomplete());
if (fileUpload.getAllowTypes() != null) {
wb.append(",allowTypes:").append(fileUpload.getAllowTypes());
}
wb.finish();
}
protected void encodeMarkup(FacesContext context,FileUpload fileUpload) throws IOException {
if (fileUpload.getMode().equals("simple")) {
encodeSimpleMarkup(context,fileUpload);
} else {
encodeAdvancedMarkup(context,fileUpload);
}
}
protected void encodeAdvancedMarkup(FacesContext context,FileUpload fileUpload) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = fileUpload.getClientId(context);
String style = fileUpload.getStyle();
String styleClass = fileUpload.getStyleClass();
styleClass = styleClass == null ? FileUpload.CONTAINER_CLASS : FileUpload.CONTAINER_CLASS + " " + styleClass;
boolean disabled = fileUpload.isDisabled();
writer.startElement("div",fileUpload);
writer.writeAttribute("id","id");
writer.writeAttribute("class",styleClass,styleClass);
if (style != null) {
writer.writeAttribute("style",style,"style");
}
//buttonbar
writer.startElement("div",fileUpload);
writer.writeAttribute("class",FileUpload.BUTTON_BAR_CLASS,null);
//choose button
encodeChooseButton(context,disabled);
if (!fileUpload.isAuto()) {
encodeButton(context,fileUpload.getUploadLabel(),FileUpload.UPLOAD_BUTTON_CLASS,"ui-icon-arrowreturnthick-1-n");
encodeButton(context,fileUpload.getCancelLabel(),FileUpload.CANCEL_BUTTON_CLASS,"ui-icon-cancel");
}
writer.endElement("div");
//content
writer.startElement("div",null);
writer.writeAttribute("class",FileUpload.CONTENT_CLASS,null);
writer.startElement("table",FileUpload.FILES_CLASS,null);
writer.startElement("tbody",null);
writer.endElement("tbody");
writer.endElement("table");
writer.endElement("div");
writer.endElement("div");
}
protected void encodeSimpleMarkup(FacesContext context,FileUpload fileUpload) throws IOException {
encodeInputField(context,fileUpload.getClientId(context));
}
protected void encodeChooseButton(FacesContext context,FileUpload fileUpload,boolean disabled) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String clientId = fileUpload.getClientId(context);
String cssClass = HTML.BUTTON_TEXT_ICON_LEFT_BUTTON_CLASS + " " + FileUpload.CHOOSE_BUTTON_CLASS;
if (disabled) {
cssClass += " ui-state-disabled";
}
writer.startElement("span",cssClass,null);
//button icon
writer.startElement("span",HTML.BUTTON_LEFT_ICON_CLASS + " ui-icon-plusthick",null);
writer.endElement("span");
//text
writer.startElement("span",HTML.BUTTON_TEXT_CLASS,null);
writer.writeText(fileUpload.getLabel(),"value");
writer.endElement("span");
if (!disabled) {
encodeInputField(context,clientId + "_input");
}
writer.endElement("span");
}
protected void encodeInputField(FacesContext context,String clientId) throws IOException {
ResponseWriter writer = context.getResponseWriter();
writer.startElement("input",null);
writer.writeAttribute("type","file",null);
writer.writeAttribute("id",null);
writer.writeAttribute("name",null);
if (fileUpload.isMultiple()) {
writer.writeAttribute("multiple","multiple",null);
}
if (fileUpload.getStyle() != null) {
writer.writeAttribute("style",fileUpload.getStyle(),"style");
}
if (fileUpload.getStyleClass() != null) {
writer.writeAttribute("class",fileUpload.getStyleClass(),"styleClass");
}
if (fileUpload.isDisabled()) {
writer.writeAttribute("disabled","disabled","disabled");
}
writer.endElement("input");
}
protected void encodeButton(FacesContext context,String label,String styleClass,String icon) throws IOException {
ResponseWriter writer = context.getResponseWriter();
String cssClass = HTML.BUTTON_TEXT_ICON_LEFT_BUTTON_CLASS + " ui-state-disabled " + styleClass;
writer.startElement("button","button",null);
writer.writeAttribute("disabled",null);
//button icon
String iconClass = HTML.BUTTON_LEFT_ICON_CLASS;
writer.startElement("span",iconClass + " " + icon,null);
writer.writeText(label,"value");
writer.endElement("span");
writer.endElement("button");
}
private boolean isMultiPartRequest(FacesContext context) {
if (context == null) {
return false;
}
return ((HttpServletRequest) context.getExternalContext().getRequest()).getContentType().startsWith("multipart");
}
}
<render-kit>
<renderer>
<component-family>org.primefaces.component</component-family>
<renderer-type>org.primefaces.component.FileUploadRenderer</renderer-type>
<renderer-class>com.yourpackage.fileupload.FileUploadRenderer</renderer-class>
</renderer>
</render-kit>
>你准备好了！
我们做了什么？我们创建了自己的FileUploadRenderer，它使用方法isMultiPartRequest()检查contentType是否为multipart / form-data。只有当这返回true，其余的代码才被执行。在任何其他情况下，不会发生任何事情，这意味着不会抛出异常。如果Primefaces修复了这个问题，你只需要删除你的faces-config.xml中的行以使用他们的类。
让我知道如果这是为你工作！
编辑
此代码检查给定的请求是否是multipart / form-data类型。如果不是，则停止执行。原来的Primefaces代码仍然会继续。正如我上面提到的，如果你在Primefaces组件中上传一个文件，实际上有两个请求：
>使用< p：fileUpload />的Ajax-FileUpload (enctype：multipart / form-data)
>< p：editRow />中的Ajax操作或< p：wizard /> (enctype：application / www-form-urlencoded)
第一个由渲染器处理，而第二个引起原始代码中的异常，因为渲染器尝试处理它不能够处理的东西。使用代码中所做的更改，只有multipart / form-data表单由渲染器处理，所以不会发生异常。 IMO显然是Primefaces的一个bug。代码差异只是方法private boolean isMultiPartRequest(FacesContext context)和它在代码中出现一次。很高兴我可以帮助你！
