我正在使用： -primefaces 4.0 -jsf mojarra 2.2 -google应用程序引擎（servlet api 2.5） 而这个解决方案（Getting primefaces p:fileUpload to work under google appengine）对我没有帮助，因为我的primefaces版本更高。当我在下面用p：commandButton：
使用我的表单时有异常java.lang.NoSuchMethodError: javax.servlet.http.HttpServletRequest.getPart(Ljava/lang/String;)Ljavax/servlet/http/Part;
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)
....
这是因为谷歌不支持servlet api 3.0。我现在真的找不到解决方案。运行primefaces 3.5不是一个选项，因为该项目使用JSF 2.2并且2.2与primefaces 3.5不兼容。
此主题的一个可用评论：How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null
更新：自PrimeFaces 4.x以来，当与JSF 2.2和Servlet 3.0结合使用时，不再需要过滤器。将使用Servlet 3.0 / JSF 2.2本机API代替Apache Commons FileUpload。但是其他规则仍然适用，并且可能的原因可以划分＃1和＃2。
我的表格：
<h:form enctype="multipart/form-data">
<p:fileUpload id="filePhoto" fileUploadListener="#{atlasCasesMB.handleFileUpload}" mode="advanced" dragDropSupport="false"
update=":messages" sizeLimit="614400" fileLimit="3" allowTypes="/(\.|\/)(gif|jpe?g|png)$/" />
</h:form>
在这种形式下，不会调用fileUploadListener。
我尝试使用此主题的解决方案：Getting primefaces p:fileUpload to work under google appengine修改DiskFileItem，但显然这无济于事，因为JSF 2.2使用本机API而不是Apache Commons FileUpload。
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
<init-param>
<param-name>thresholdSize</param-name>
<param-value>2147483647</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
有什么建议吗？ （降级primefaces和jsf不是一个选项，因为项目处于最后阶段）
我尝试过的解决方案是强制使用apache使用apache公共文件上传（commons-fileupload-1.3.jar）：
<context-param>
<param-name>primefaces.UPLOADER</param-name>
<param-value>commons</param-value>
</context-param>
然后我使用了过滤器：
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
<init-param>
<param-name>thresholdSize</param-name>
<param-value>2147483647</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
这里重要的是设置thresholdSize这么大，以至于某些apache公共类（我忘了哪个）中的write方法没有被调用。最后从primefaces 4.0源文件中添加过滤器FileUploadFilter：http://www.primefaces.org/downloads.html
我过去常常提到的所有来源：
http://davebarber.blog.com/2010/10/15/jsf-2-0-on-google-app-engine/
PrimeFaces 4.0 FileUpload works with Mojarra 2.2 but not MyFaces 2.2
How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null
Getting primefaces p:fileUpload to work under google appengine
这火了：
java.lang.verifyerror inconsistent stackmap frames at branch target
答案 0 :(得分：2)
要防止primefaces使用其原生文件上传，请添加以下参数。
<context-param>
<param-name>primefaces.UPLOADER</param-name>
<param-value>commons</param-value>
</context-param>
然后我使用了过滤器：
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
<init-param>
<param-name>thresholdSize</param-name>
<param-value>2147483647</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
这里重要的是设置thresholdSize这么大，以至于某些apache公共类（我忘了哪个）中的write方法没有被调用。最后从primefaces 4.0修改过滤器FileUploadFilter：
package org.primefaces.webapp.filter;
import java.io.File;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.gmr.web.multipart.GFileItemFactory;
import org.primefaces.webapp.MultipartRequest;
public class FileUploadFilter implements Filter {
private final static Logger logger = Logger.getLogger(FileUploadFilter.class.getName());
private final static String THRESHOLD_SIZE_PARAM = "thresholdSize";
private final static String UPLOAD_DIRECTORY_PARAM = "uploadDirectory";
private String thresholdSize;
private String uploadDir;
public void init(FilterConfig filterConfig) throws ServletException {
thresholdSize = filterConfig.getInitParameter(THRESHOLD_SIZE_PARAM);
uploadDir = filterConfig.getInitParameter(UPLOAD_DIRECTORY_PARAM);
logger.warning("init:uploadDir=" + uploadDir + "; thresholdSize=" + thresholdSize);
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
boolean isMultipart = ServletFileUpload.isMultipartContent(httpServletRequest);
if (isMultipart) {
logger.warning("Parsing file upload request");
// start change
FileItemFactory diskFileItemFactory = new GFileItemFactory();
/*
* if(thresholdSize != null) { diskFileItemFactory.setSizeThreshold(Integer.valueOf(thresholdSize)); } if(uploadDir != null) { diskFileItemFactory.setRepository(new File(uploadDir)); }
*/
// end change
ServletFileUpload servletFileUpload = new ServletFileUpload(diskFileItemFactory);
MultipartRequest multipartRequest = new MultipartRequest(httpServletRequest, servletFileUpload);
if (logger.isLoggable(Level.FINE))
logger.fine("File upload request parsed succesfully, continuing with filter chain with a wrapped multipart request");
filterChain.doFilter(multipartRequest, response);
} else {
filterChain.doFilter(request, response);
}
}
public void destroy() {
if (logger.isLoggable(Level.FINE))
logger.fine("Destroying FileUploadFilter");
}
}
形式：
<h:form >
<p:fileUpload id="filePhoto" fileUploadListener="#{atlasCasesMB.handleFileUpload}" mode="advanced" dragDropSupport="false"
update=":messages" sizeLimit="614400" fileLimit="3" allowTypes="/(\.|\/)(gif|jpe?g|png)$/" />
<br />
<p:commandButton value="#{bundle['save']}" actionListener="#{atlasCasesMB.saveCase}" process="@form" />
</h:form>
文件上传处理程序：
public void handleFileUpload(FileUploadEvent event) {
log.warning("handleFileUpload(FileUploadEvent event)");
UploadedFile uploadedFile = event.getFile();
photosArr.add(uploadedFile.getContents());
//photos.add(new File(uploadedFile.getFileName()));
FacesMessage msg = new FacesMessage("Succesful", event.getFile().getFileName() + " is uploaded.");
FacesContext.getCurrentInstance().addMessage(null, msg);
}
字节数组照片列表：
private List<byte[]> photosArr;
库：
DiskFileItem： 注释UID和写入方法
和ViewScoped Bean
有第二种方法可以做到这一点： 使用多部分请求到球衣：
<p:dialog id="upladPhotoDialog" widgetVar="upladPhotoDlg" header="#{bundle['uploading.photos']}" >
<form action="rest/case" method="post" enctype="multipart/form-data">
<p>#{bundle['upload.photo.select.images.to.upload']}</p>
<br />
<input id="photo1" type="file" name="photo1" />
<br />
<input id="photo2" type="file" name="photo2" />
<br />
<input id="photo3" type="file" name="photo3" />
<br />
<input id="caseId" type="text" name="caseId" style="display:none" value="#{atlasCasesMB.savedCaseId}" />
<br />
<input id="btn-post" class="active btn" type="submit" value="Send" />
</form>
@POST
@Consumes(MediaType.MULTIPART_FORM_DATA)
public void insertPhotoForCase (
@FormDataParam("photo1") InputStream photoIS1,
@FormDataParam("photo2") InputStream photoIS2,
@FormDataParam("photo3") InputStream photoIS3,
@FormDataParam("caseId") String caseId , @Context HttpServletRequest httpRequest , @Context HttpServletResponse httpResponse) {
try {
DataService<Case> das = new CaseDataService();
Case caze = das.find(Integer.parseInt(caseId));
byte[] photoBytes = IOUtils.toByteArray(photoIS1);
if(photoBytes.length != 0 ){
sendPhotoToBlob (createPhoto(caze).getId() ,photoBytes);
}
photoBytes = IOUtils.toByteArray(photoIS2);
if(photoBytes.length != 0 ){
sendPhotoToBlob (createPhoto(caze).getId() ,photoBytes);
}
photoBytes = IOUtils.toByteArray(photoIS3);
if(photoBytes.length != 0 ){
sendPhotoToBlob (createPhoto(caze).getId() ,photoBytes);
}
//currentResponse.sendRedirect("/atlascases.xhtml");
_context.getRequestDispatcher("/atlascases.xhtml").forward(httpRequest, httpResponse);
} catch (Exception e) {
e.printStackTrace();
}
}
file：jersey-multipart-config.properties在src文件夹中，文本在里面：
bufferThreshold = -1
<servlet>
<servlet-name>Jersey REST Service</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.smartinteractive.medimaging.service</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jersey REST Service</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>