继续解决这个问题，我已经更换了钻嘴鱼科通过的MyFaces和升级JDK，当我继续工作形式的服务器重新启动后，显示以下错误：
发生错误：
/food.xhtmlNo saved view state could be found for the view identifier: /food.xhtml
Caused by:
javax.faces.application.ViewExpiredException - /food.xhtmlNo saved view state could be found for the view identifier: /food.xhtml
控制台：
SEVERE: Exception loading sessions from persistent storage
java.lang.IllegalStateException: unread block data
at java.io.ObjectInputStream$BlockDataInputStream.setBlockDataMode(ObjectInputStream.java:2376)
堆栈跟踪：
javax.faces.application.ViewExpiredException: /food.xhtmlNo saved view state could be found for the view identifier: /food.xhtml
at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:128)
at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:171)
at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:189)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at …我尝试使用Glassfish使用JSF 2的MyFaces impl,但我无法这样做.我在项目中添加了以下jar:
我还将文件glassfish-web.xml添加到WEB-INF,其中包含以下内容:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glassfish-web-app PUBLIC "-//GlassFish.org//DTD GlassFish Application Server 3.1 Servlet 3.0//EN" "http://glassfish.org/dtds/glassfish-web-app_3_0-1.dtd">
<glassfish-web-app error-url="">
<class-loader delegate="true"/>
<property name="useBundledJsf" value="true"/>
<jsp-config>
<property name="keepgenerated" value="true">
<description>Keep a copy of the generated servlet class' java code.</description>
</property>
</jsp-config>
</glassfish-web-app>
编辑
根据BalusC的回答,我删除了myfaces-bundle-2.1.7.jar,现在我得到以下异常:
GRAVE: PWC1305: Exception during cleanup after start failed
org.apache.catalina.LifecycleException: PWC2769: Manager has not yet been started
at org.apache.catalina.session.StandardManager.stop(StandardManager.java:873)
at org.apache.catalina.core.StandardContext.stop(StandardContext.java:5571)
at com.sun.enterprise.web.WebModule.stop(WebModule.java:527)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:5384)
at com.sun.enterprise.web.WebModule.start(WebModule.java:498) …我正在使用 myfaces ExtensionFilter 上传文件，但该文件未设置到我的 bean 中以供进一步处理。
这是代码：
<h:form id="uploadFileForm" enctype="multipart/form-data">
<tom:inputFileUpload id="file"
value="#{paramUpload.uploadFile}">
<f:valueChangeListener type="com.bosch.de.plcd.plugin.ParamFileUpload" />
</tom:inputFileUpload>
<a4j:commandButton value="#{tpMsgs.upload}"
styleClass="button" action="#{paramUpload.uploadParamFile}"
onclick="javascript:updateParentScreen();">
</a4j:commandButton>
</h:form>
web.xml配置如下
<filter>
<filter-name>Extensions Filter</filter-name>
<filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>Extensions Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
由于UploadFile没有设置为 bean，我也尝试使用 ValueChangeListener，尽管如此，它不是 bean :)
豆码
public class ParamFileUpload implements ValueChangeListener {
private UploadedFile uploadFile;
public void uploadParamFile() {
if(uploadFile != null) {
LOGGER.info("File type: " + uploadFile.getContentType());
LOGGER.info("File name: " + uploadFile.getName());
LOGGER.info("File size: " + uploadFile.getSize() + " bytes");
} …我有一个Web服务器项目,我在尝试下载大文件时遇到异常.该文件通过流读取并写入ServletOutputStream.
示例代码:
private void readFromInput(BufferedInputStream fis,
ServletOutputStream sout) throws IOException
{
byte[] buf = new byte[4096];
int c = 0;
while ((c = fis.read(buf)) != -1)
{
sout.write(buf, 0, c);
}
fis.close();
}
当我查看回溯时,我看到一些过滤器被执行.
以下是例外的一些部分:
javax.servlet.ServletException: #{DownloaderBean.actionDownload}:
java.lang.OutOfMemoryError: Java heap space
javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144)
org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:127)
org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:277)
....
....
....
java.lang.OutOfMemoryError: Java heap space
java.io.ByteArrayOutputStream.write(Unknown Source)
org.apache.myfaces.webapp.filter.ExtensionsResponseWrapper$MyServletOutputStream.write(ExtensionsResponseWrapper.java:135)
当我查看ExtensionFilter代码时:
此页面上有一部分内容:
"When the ExtensionsFilter is enabled, and the DefaultAddResources implementation is
used then there is no way to avoid having the response buffered …嗨有这个奇怪的问题,我使用的Composite Component是我写的,我从之前使用的CC(componentTypebean)的支持bean获取值
我不知道如何更好地描述这个,而不仅仅是显示代码.我将尝试简要介绍并删除多余的部分:这是Composite Component定义:
<cc:interface componentType="dynamicFieldGroupList">
<cc:attribute name="coupletClass" />
<cc:attribute name="form" default="@form"/>
<cc:attribute name="list" type="java.util.List" required="true"/>
<cc:attribute name="fieldNames" type="java.util.List" required="true" />
</cc:interface>
<cc:implementation>
<h:dataTable value="#{cc.model}" var="currLine">
<h:column>
<h:outputText id="inner_control_component" value="Inner Look at currLine:#{currLine}"/>
</h:column>
</h:dataTable>
</cc:implementation>
CC bean定义:
@FacesComponent(value = "dynamicFieldGroupList")
// To be specified in componentType attribute.
@SuppressWarnings({ "rawtypes", "unchecked" })
// We don't care about the actual model item type anyway.
public class DynamicFieldGroupList extends UIComponentBase implements
NamingContainer
{
private transient DataModel …我是JSF的新手,我对管理用户登录的最佳实践感到困惑.有许多答案浮出水面,但它们需要JSF和Java EE的知识,而我似乎并不知道.
使用经典JSP项目时,我以非常简单的方式处理登录.当用户成功登录时,会创建一个值为true的会话属性"isLoggedIn".当用户注销时,会话无效.如果"isLoggedIn"属性为false或缺失,则要求您登录的页面将重定向到登录屏幕.
如何在JSF中完成这类工作？我应该在HttpSession或托管会话bean中存储登录状态,用户名和用户角色等内容吗？
我发现很多答案都说你应该使用request.getRemoteUser()来管理登录,但是不做任何进一步的解释.根据我能够收集的内容,如果您使用域凭据登录应用程序,此方法很有用.如果我在数据库中存储用户凭据(用户名+ salted和哈希密码),那么它有用吗？
如果有人能告诉我如何使用以下两页的网站,那将非常有用:
如果用户在未登录时尝试转到第二页,则会将其重定向到第一页.
就像我之前说过的,我是JSF的新手,我根本找不到一个如何处理这类事情的好教程.因此,任何您认为有用的链接将不胜感激.
如果重要,我正在使用MyFaces实现和PrimeFaces组件库.
是否有可能告诉我的JSF实现将空数转换为null.到目前为止,我总是得到0(相应的复杂类型).
对于空字符串有javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL,但我无法找到任何数字.顺便说一下:不,我不能使用vm-argument:-Dorg.apache.el.parser.COERCE_TO_ZERO = false
自定义数字转换器是我唯一的可能吗？
我有这个表单,有170个单独的文本框,在会话范围的bean中有值.需要仅在组件具有特定CSS类时提交值.
我最初接近这个的方法是在UPDATE_MODEL_VALUES创建一个PhaseListener并在那里测试CSS类.如果该类是受影响的类,我将组件的值设置为null.然后在前端,我使用通用JavaScript方法切换焦点类.这意味着每个组件的更改我只需要添加:
... styleClass="examfieldgrey" onfocus="whiteField(this);"
鉴于我需要改变多少组件,这是一种很好的方式.
这工作正常,直到我重新考虑我的电子表格以使用多个h表格标签.现在CSSclass正在切换前端,但是没有保存此更改.阶段监听器正在获得旧班级.
我认为这显然与我在jQuery/javascript中切换类有关.我想知道的是:
很抱歉,如果这是一个显而易见的问题,我对JSF生命周期仍然有点青睐.
我正在使用JSF 2.0 MyFaces
这里的参考是我的表单上需要过滤的组件的示例:
<h:inputTextarea
id="inputVal"
styleClass="midTextArea examfieldgrey"
onfocus="whiteField(this);"
value="#{bean.form.val}"/>
其中"examfieldgrey"是我在确定是否要阻止组件时测试的类.
和whiteField方法:
function whiteField(field){
if(! jQuery(field).hasClass("examfieldgrey")){
return;
}
jQuery(field).removeClass("examfieldgrey");
jQuery(field).addClass("examfieldwhite");
}
我的阶段监听器在阶段方法之前我过滤:
// TODO: make whatever mode allows ghosting to be configurable outside of
// the system (perhaps in the config file)
/**
* Before the model is updated, test each component's CSS on the form. If the
* CSS style is 'examfieldgrey' set the value to null so …当我点击应用程序URL(http://localhost:9082/pages/upload.jsf)时,我在浏览器上只显示"错误:500 StackOverflowError".从我在这个问题上的基础工作,我可以看出这可能是由于一些递归问题.
部署我的应用程序的服务器是WAS 8
有人请帮助我如何处理这个问题.我知道这很模糊,如果我需要分享任何内容,请告诉我.(例如,控制台和东西上的错误消息)
at javax.faces.context.FacesContext.getAttributes(FacesContext.java:64)
at javax.faces.context.FacesContext.getAttributes(FacesContext.java:64)
[the same line repeated many times]
at javax.faces.context.FacesContext.getAttributes(FacesContext.java:64)
at javax.faces.context.FacesContext.getAttributes(FacesContext.java:64)
at org.apache.myfaces.application.ResourceHandlerImpl.isResourceRequest(ResourceHandlerImpl.java:416)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:180)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1188)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:763)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:454)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:125)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:92)
at com.lmig.putt.customComponents.UploadFilter.doFilter(UploadFilter.java:61)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:192)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:89)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:919)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1016)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3703)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:962)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1662)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:195)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:452)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:511)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:305)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:276)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture$1.run(AsyncChannelFuture.java:205)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1659)
`这是我点击URL后在控制台上找到的错误消息.请帮助我,因为我发现它是全新的并且难以破解
在web.xml
<?xml …我想在我的应用程序中使用 Primefaces 和 Myfaces。然而，有一个例外。
00:31:01,292 SEVERE [org.primefaces.config.ConfigContainer] (http--0.0.0.0-8081-1) Could not load or parse web.xml: java.lang.ClassCastException: org.apache.xml.dtm.ref.DTMManagerDefault cannot be cast to org.apache.xml.dtm.DTMManager
at org.apache.xml.dtm.DTMManager.newInstance(DTMManager.java:137) [xalan.jar:4.0.2 (build: CVSTag=JBoss_4_0_2 date=200505022023)]
at org.apache.xpath.XPathContext.<init>(XPathContext.java:102) [xalan.jar:4.0.2 (build: CVSTag=JBoss_4_0_2 date=200505022023)]
at org.apache.xpath.jaxp.XPathExpressionImpl.eval(XPathExpressionImpl.java:115)
at org.apache.xpath.jaxp.XPathExpressionImpl.eval(XPathExpressionImpl.java:99)
at org.apache.xpath.jaxp.XPathExpressionImpl.evaluate(XPathExpressionImpl.java:184)
at org.primefaces.config.ConfigContainer.initErrorPages(ConfigContainer.java:314) [primefaces-5.2.jar:5.2]
at org.primefaces.config.ConfigContainer.initConfigFromWebXml(ConfigContainer.java:291) [primefaces-5.2.jar:5.2]
at org.primefaces.config.ConfigContainer.<init>(ConfigContainer.java:88) [primefaces-5.2.jar:5.2]
at org.primefaces.context.DefaultApplicationContext.<init>(DefaultApplicationContext.java:35) [primefaces-5.2.jar:5.2]
at org.primefaces.context.DefaultRequestContext.getApplicationContext(DefaultRequestContext.java:227) [primefaces-5.2.jar:5.2]
at org.primefaces.metadata.transformer.MetadataTransformerExecutor.processEvent(MetadataTransformerExecutor.java:50) [primefaces-5.2.jar:5.2]
at javax.faces.event.SystemEvent.processListener(SystemEvent.java:43) [myfaces-api-2.1.12.jar:2.1.12]
at org.apache.myfaces.application.ApplicationImpl._traverseListenerList(ApplicationImpl.java:2471) [myfaces-bundle-2.1.12.jar:2.1.12]
at org.apache.myfaces.application.ApplicationImpl.access$000(ApplicationImpl.java:120) [myfaces-bundle-2.1.12.jar:2.1.12]
at org.apache.myfaces.application.ApplicationImpl$SystemListenerEntry.publish(ApplicationImpl.java:2662) [myfaces-bundle-2.1.12.jar:2.1.12]
at org.apache.myfaces.application.ApplicationImpl.publishEvent(ApplicationImpl.java:601) [myfaces-bundle-2.1.12.jar:2.1.12]
at javax.faces.component.UIComponentBase._publishPostAddToViewEvent(UIComponentBase.java:235) [myfaces-api-2.1.12.jar:2.1.12]
at javax.faces.component.UIComponentBase.setParent(UIComponentBase.java:215) [myfaces-api-2.1.12.jar:2.1.12]
at javax.faces.component._ComponentFacetMap.setNewParent(_ComponentFacetMap.java:178) …