1
저는 primefaces를 처음 사용하고 프로젝트에서 fileUpload 구성 요소를 구현하려고합니다. 설명서를 열었지만 명확하지 않아 구현이 작동하지 않습니다.file 업로드 및 primefaces 업로드 된 파일의 null 값
는 문서의첫 번째 줄은 말한다 :
". 할 우선이는 FileUpload 필터는 얼굴 서블릿에 매핑해야하는 다중 요청을 구문 분석하는 파일 업로드 필터를 구성하는 것입니다."
이 코드를 넣어 권고가있다 : web.xml 서술자에
첫 번째 문제
<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>
을 : "멀티 파트 요청을 구문 분석 ... 필터". 나는 이것이 하나 이상의 파일을 업로드하고 싶다면 그 코드를 사용해야한다는 것을 이해한다 (확실하지 않다). 그래서 나는 인터넷에서 발견 된 대부분의 예제에서이 코드를 구현해야한다는 것을 잊어야한다고 생각했습니다.
두 번째 문제 : 내 web.xml 파일에 필터를 구현하려고 할 때 가 :
이java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/wals]]
at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/wals]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
... 7 more
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/fileupload/FileItemFactory
at java.lang.Class.getDeclaredFields0(Native Method)
at java.lang.Class.privateGetDeclaredFields(Unknown Source)
at java.lang.Class.getDeclaredFields(Unknown Source)
at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:106)
at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:261)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationFilterAnnotations(WebAnnotationSet.java:110)
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:66)
at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:405)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:881)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:369)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5269)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 7 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.fileupload.FileItemFactory
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
... 21 more
이 세 번째 문제 : 이이 발생할 수 있습니다
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<display-name>Archetype Created Web Application</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/classes/configuration-context.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>FORWARD</dispatcher>
<dispatcher>REQUEST</dispatcher>
<dispatcher>INCLUDE</dispatcher>
<dispatcher>ERROR</dispatcher>
</filter-mapping>
<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>
<listener>
<listener- class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- JSF Mapping -->
<servlet>
<servlet-name>facesServlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>facesServlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>facesServlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>facesServlet</servlet-name>
<url-pattern>*.faces</url-pattern>
</servlet-mapping>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.xhtml</param-value>
</context-param>
<context-param>
<param-name>primefaces.THEME</param-name>
<param-value>redmond</param-value>
</context-param>
</web-app>
나는 많은 오류를 얻을 수 제 1과 제 2 문제에 의해 그러나 나는 확실하지 않다. 나는 필터 코드를 포기하고 XHTML 파일에 같은 primefaces을 구현하는 경우 : fileUploadController 콩 단순히 정의
<h:form enctype="multipart/form-data">
<h:outputText value="Wybór zdjęcia: " />
<p:fileUpload value="#{fileUploadController.file}" mode="simple" />
<p:commandButton value="Submit" ajax="false"/>
</h:form>
는 :
@Component
@Scope("session")
@ManagedBean
@SessionScoped
public class FileUploadController
{
private UploadedFile file;
public UploadedFile getFile()
{
return file;
}
public void setFile(UploadedFile file)
{
this.file = file;
}
}
나는 파일 필드에 null 값을 얻는다. 내 목표는 이미지를 업로드하고 Blob로 변경 한 다음 데이터베이스로 보냅니다. 나는 그 부분없이 내 프로젝트를 계속할 수 없기 때문에 당신의 도움에 매우 감사 할 것입니다.
아마도 내 대답은 많은 사람들을 도울 수 있습니다. http://stackoverflow.com/a/33760453/1201725 – webmaster