在PrimeFaces 4.0/JSF 2.2.x中，文件上传不适用于AJAX-javax.servlet.ServletException:请求内容类型不是多部分/表单数据 [英] File upload doesn't work with AJAX in PrimeFaces 4.0/JSF 2.2.x - javax.servlet.ServletException: The request content-type is not a multipart/form-data
本文介绍了在PrimeFaces 4.0/JSF 2.2.x中，文件上传不适用于AJAX-javax.servlet.ServletException:请求内容类型不是多部分/表单数据的处理方法，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
重要:此主题中讨论的问题是 已修复 ，自 PrimeFaces 5.1 final (社区版本) 已发布 (2014年10月6日，星期一，从现在开始几分钟前).我尝试使用 JSF 2.2.8-02 (或 api ， impl ).
因此，如果您碰巧使用了该版本(或更高版本，无需提及)，则什至无需再阅读此问题.
我正在运行一个Web应用程序
- GlassFish 4.0
- Mojarra 2.2.4
- PrimeFaces 4.0最终版
使用AJAX上传文件之外的所有内容都可以正常工作.以下xhtml文件通过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.");
}
}
}
从文件浏览器上载文件时，它将在其侦听器中显示文件名-fileUploadListener().
上传文件后，按下给定的命令按钮(ajax="true")，将引发以下异常.
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)
仅当命令按钮的ajax属性设置为false时，它才能工作-ajax="false".
我已将Tomcat 7.0.35中的Mojarra版本降级为2.1.9.它与此Mojarra版本以及PrimeFaces 4.0 final(以及PrimeFaces 4.0 RC1)一起使用-通过AJAX请求上传的文件.
我还尝试了以下Mojarra版本
- 2.2.0
- 2.2.1
- 2.2.2
- 2.2.3
- 2.2.4
在GlassFish 4.0中，但它们都没有成功通过AJAX请求成功上传文件，因为在PrimeFaces DataTable中使用<p:rowEditor/>编辑行(例如，每行都有图像)总是基于AJAX. /p>
我想始终将GlassFish保留为 4.0 .我也曾尝试在GlassFish 4.0中降级Mojarra 2.1.9，但它未能创建以异常结尾的包. GlassFish 4.0似乎不适用于低于2.2.x的Mojarra.
那么，导致此异常的原因是什么-PrimeFaces或JSF?只是感到困惑.在这种给定的环境中，是否有任何解决方法可以上传带有AJAX请求的文件?
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>
问题与Mojarra版本 2.2.5 (或 api ， impl ) 2.2.6 (或 api ， impl ) PrimeFaces 5.0 最终版已发布于2014年5月5日.
解决方案
我遇到了同样的问题.它与<p:commandButton>的关系似乎比<p:fileUpload>的更多，因为它与<h:commandButton>(甚至与ajax)一起工作.
您可以尝试:
<h:commandButton id="btnSubmit" actionListener="#{testManagedBean.insert}" value="Save">
<f:ajax execute="@all" render="@form"/>
</h:commandButton>
我无法告诉您它为什么或如何工作，但是它为我解决了这个问题. 当然，不利的一面是，您必须自己进行样式设计，至少直到 Primefaces伙计们解决了这个问题.
编辑:
深入研究源代码并进行调试后，如果发现实际上发出了两个请求(我在<p:wizard/>中尝试过).第一个是multipart/form-data，它实际上是在上传文件.它在Bean中触发fileUploadEvent.我按下向导的 next 按钮，提交了另一种编码为application/www-urlencoded的表格.这导致异常.结论是，与我在评论中写道的抑制异常不同，这是一个有效的解决方案.甚至可以通过不包括更改Primefaces.jar的方式来完成，如果这些家伙在以后的版本中解决了该问题，这将非常方便.
所以这是需要做的:
- 创建一个新的类
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", SearchExpressionFacade.resolveComponentsForClient(context, fileUpload, 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", "function()", fileUpload.getOnerror()) .callback("oncomplete", "function()", 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", clientId, "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, fileUpload, 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", null); writer.writeAttribute("class", 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, 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", null); writer.writeAttribute("class", cssClass, null); //button icon writer.startElement("span", null); writer.writeAttribute("class", HTML.BUTTON_LEFT_ICON_CLASS + " ui-icon-plusthick", null); writer.endElement("span"); //text writer.startElement("span", null); writer.writeAttribute("class", HTML.BUTTON_TEXT_CLASS, null); writer.writeText(fileUpload.getLabel(), "value"); writer.endElement("span"); if (!disabled) { encodeInputField(context, fileUpload, clientId + "_input"); } writer.endElement("span"); } protected void encodeInputField(FacesContext context, FileUpload fileUpload, String clientId) throws IOException { ResponseWriter writer = context.getResponseWriter(); writer.startElement("input", null); writer.writeAttribute("type", "file", null); writer.writeAttribute("id", clientId, null); writer.writeAttribute("name", clientId, 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", null); writer.writeAttribute("type", "button", null); writer.writeAttribute("class", cssClass, null); writer.writeAttribute("disabled", "disabled", null); //button icon String iconClass = HTML.BUTTON_LEFT_ICON_CLASS; writer.startElement("span", null); writer.writeAttribute("class", iconClass + " " + icon, null); writer.endElement("span"); //text writer.startElement("span", null); writer.writeAttribute("class", HTML.BUTTON_TEXT_CLASS, 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"); } } -
在
faces-config.xml的底部添加以下行:<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> -
您准备好了！
我们做了什么?我们创建了自己的FileUploadRenderer，它使用isMultiPartRequest()方法检查contentType是否真的为multipart/form-data.仅当返回true时，其余代码才会执行.在任何其他情况下，都不会发生任何事情，这意味着不会引发任何异常.如果Primefaces解决了此问题，则只需删除faces-config.xml中的行即可使用其类.
让我知道这是否对您有用！
编辑
此代码检查给定请求是否为multipart/form-data类型.如果不是，则停止执行.原始的Primefaces代码仍将继续.正如我上面提到的，如果您在Primefaces组件中上传文件，实际上会发出两个请求:
- 使用
<p:fileUpload/>的Ajax-FileUpload(编码:multipart/form-data) -
<p:editRow/>或<p:wizard/>中的Ajax操作(密码:application/www-form-urlencoded)
第一个由渲染器处理，而第二个则在原始代码中引起异常，因为渲染器试图处理它无法处理的内容.通过代码中的更改，渲染器仅处理multipart/form-data表单，因此不会发生异常.海事组织，这显然是Primefaces来源中的一个错误.代码差异只是方法private boolean isMultiPartRequest(FacesContext context)及其在代码中的一种出现.很高兴可以为您服务！
Important : The issue which is discussed in this thread has been fixed as of PrimeFaces 5.1 final (community release) released on Monday, October 6, 2014 (just a few minutes ago from now). I attempted on JSF 2.2.8-02 (or api, impl).
As such, if you happened to use that version (or higher, no need to mention), you would not even need to read this question anymore.
I have a web application running on
- GlassFish 4.0
- Mojarra 2.2.4
- PrimeFaces 4.0 final
Everything except file upload with AJAX works well. The following xhtml file sends multipart contents via an AJAX request triggered by a PrimeFaces command button.
<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>
The test managed 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.");
}
}
}
When a file is uploaded from a file browser, it shows the file name in its listener - fileUploadListener().
After uploading a file, when the given command button is pressed (ajax="true"), it causes the following exception to be thrown.
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)
It can only work, when the ajax attribute of the command button is set to false - ajax="false".
I have downgraded the Mojarra version to 2.1.9 in Tomcat 7.0.35. It worked with this Mojarra version along with PrimeFaces 4.0 final (and PrimeFaces 4.0 RC1 too) - files uploaded with an AJAX request.
I have alternatively tried on the following Mojarra versions
- 2.2.0
- 2.2.1
- 2.2.2
- 2.2.3
- 2.2.4
in GlassFish 4.0 but none of them succeeded to upload files with an AJAX request which is highly required because editing of rows using <p:rowEditor/> (along with images in each row, for example) in PrimeFaces DataTable is always AJAX based.
I want to keep GlassFish 4.0 anyhow. I have also tried to downgrade Mojarra 2.1.9 in GlassFish 4.0 but it failed to create bundles ending with an exception. GlassFish 4.0 doesn't seem to work with Mojarra lower than 2.2.x.
So, what is responsible for causing this exception - PrimeFaces or JSF? Just confused. Is there any workaround to upload files with AJAX requests in this given environment?
EDIT:
Filter mapping in web.xml:
<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>
The problem remains stationary along with the Mojarra version 2.2.5 (or api, impl) released on January 08, 2014.
Once again tried on the Mojarra version 2.2.6 (or api, impl) released on March 04, 2014. The problem remains intact.
Still does not work on PrimeFaces 5.0 final released on May 05, 2014.
解决方案
I had the same issue. It seems to be more related to the <p:commandButton> than the <p:fileUpload> component, since it works with an <h:commandButton> (even with ajax).
You could try:
<h:commandButton id="btnSubmit" actionListener="#{testManagedBean.insert}" value="Save">
<f:ajax execute="@all" render="@form"/>
</h:commandButton>
I cannot tell you why or how it works, but it fixed the issue for me. The downside of course is, that you have to do the styling by yourself, at least until the Primefaces guys fix this issue.
EDIT:
After digging in the sources and doing some debugging if figured out that there are actually two requests made (I tried in <p:wizard/>). The first one is the multipart/form-data one which actually does the file upload. It fires the fileUploadEvent in the Bean. I the wizards next button is pressed another form with enctype application/www-urlencoded is submitted. This causes the exception. Conclusion is, that unlike what I wrote in the comment suppressing the exception is a valid solution. This can even be done in a way that does not include changing the Primefaces.jar which is handy if the guys fix the issue in a future version.
So here is what needs to be done:
- Create a new class
com.yourpackage.fileupload.FileUploadRenderer Copy and paste the following code inside your new class:
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", SearchExpressionFacade.resolveComponentsForClient(context, fileUpload, 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", "function()", fileUpload.getOnerror()) .callback("oncomplete", "function()", 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", clientId, "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, fileUpload, 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", null); writer.writeAttribute("class", 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, 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", null); writer.writeAttribute("class", cssClass, null); //button icon writer.startElement("span", null); writer.writeAttribute("class", HTML.BUTTON_LEFT_ICON_CLASS + " ui-icon-plusthick", null); writer.endElement("span"); //text writer.startElement("span", null); writer.writeAttribute("class", HTML.BUTTON_TEXT_CLASS, null); writer.writeText(fileUpload.getLabel(), "value"); writer.endElement("span"); if (!disabled) { encodeInputField(context, fileUpload, clientId + "_input"); } writer.endElement("span"); } protected void encodeInputField(FacesContext context, FileUpload fileUpload, String clientId) throws IOException { ResponseWriter writer = context.getResponseWriter(); writer.startElement("input", null); writer.writeAttribute("type", "file", null); writer.writeAttribute("id", clientId, null); writer.writeAttribute("name", clientId, 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", null); writer.writeAttribute("type", "button", null); writer.writeAttribute("class", cssClass, null); writer.writeAttribute("disabled", "disabled", null); //button icon String iconClass = HTML.BUTTON_LEFT_ICON_CLASS; writer.startElement("span", null); writer.writeAttribute("class", iconClass + " " + icon, null); writer.endElement("span"); //text writer.startElement("span", null); writer.writeAttribute("class", HTML.BUTTON_TEXT_CLASS, 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"); } }Add the following lines at the bottom of your
faces-config.xml:<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>You're ready to go!
What have we done? We created our own FileUploadRenderer which checks if the contentType is really multipart/form-data using the method isMultiPartRequest(). Only if this returns true the rest of the code is executed. In any other case nothing will happen which means that no exception will be thrown. If Primefaces fixes this issue you just need to remove the lines from your faces-config.xml to use their class.
Let me know if that works for you!
EDIT
This code checks wether or not the given request is of type multipart/form-data. If it is not the execution is stopped. The original Primefaces code would continue anyway. As I mentioned above if you upload a file inside a Primefaces component there are actually two requests made:
- The Ajax-FileUpload using the
<p:fileUpload/>(enctype:multipart/form-data) - The Ajax action in the
<p:editRow/>or<p:wizard/>(enctype:application/www-form-urlencoded)
The first one is handled by the renderer while the second one causes the exception in the original code since the renderer tries to handle something which it is not capable of. With the changes made in the code only multipart/form-data forms are handled by the renderer so no exceptions occur. IMO it is clearly a bug in the sources of Primefaces. The code differences is just the method private boolean isMultiPartRequest(FacesContext context) and its one occurrence in the code. Glad I could help you!
这篇关于在PrimeFaces 4.0/JSF 2.2.x中，文件上传不适用于AJAX-javax.servlet.ServletException:请求内容类型不是多部分/表单数据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！
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