對於我當前的項目,我正在使用JSF,Seam和Hibernate,並且我遇到了seam問題。在IE中驗證後Seam動作解析爲空
我創建了一個帶有輸入字段(用於productionMonth)的XHTML文件,並且我在其上定義了一個驗證器以確保正確的用戶輸入。我還在該領域啓用了ajax支持,以使驗證更加便於用戶使用。
然後我創建了我的動作類(從我的XHTML引用),並添加了屬性'productionMonth'和我需要的驗證器。
現在,當我部署這種情況下,一切似乎都很好。 但是: 我在productionMonth字段中輸入一個值,然後按回車鍵以提交我的表單。 有時(當我足夠快,我的電腦是夠慢),我得到一個異常:
Target Unreachable, identifier 'sateiFileHome' resolved to null"
奇怪的是,
- 這隻能在IE可再現的(我使用IE8)
- 當我刪除了Ajax的支持標籤我沒有錯誤,因此必須是真正的Ajax相關
我最好的問題的原因的猜測是,AJAX調用和提交同時啓動。並且因爲其中一個調用無法解析對動作類的引用。但那爲什麼只在IE中?
我也嘗試使用Hibernate驗證,但仍然是相同的問題!
我googled這個問題,但找不到任何幫助我。 這裏的任何猜測?
我的動作類:
@Name("sateiFileHome")
@Scope(ScopeType.CONVERSATION)
public class SateiFileHome extends CustomHome<Satei> {
...
private Integer productionMonth = 0;
...
public Integer getProductionMonth() {
return productionMonth;
}
public void setProductionMonth(Integer productionMonth) {
this.productionMonth = productionMonth;
}
...
/* VALIDATORS */
public void validateProductionMonth(final FacesContext context,
final UIComponent comp, final Object inputValue)
throws ValidatorException {
DateValidator.validateYearMonth(inputValue, false);
this.productionMonth = Integer.parseInt(String.valueOf(inputValue));
}
...
}
我的XHTML文件:
<s:decorate id="productionMonthField" template="layout/edit.xhtml">
<ui:define name="label">Production Month</ui:define>
<h:inputText id="productionMonth"
value="#{sateiFileHome.productionMonth}"
validator=#{sateiFileHome.validateProductionMonth}
required="true"
size="7"
maxlength="6">
<a:support event="onblur" reRender="productionMonthField"/>
</h:inputText>
</s:decorate>
異常(僅在IE8可重放):
Caused by javax.el.PropertyNotFoundException with message: "/SateiFile.xhtml @123,48 value="#{sateiFileHome.versionCode}": Target Unreachable, identifier 'sateiFileHome' resolved to null"
並全面stackstrace:
Exception during request processing:
Caused by javax.servlet.ServletException with message: "/SateiFile.xhtml @123,48 value="#{sateiFileHome.versionCode}": Target Unreachable, identifier 'sateiFileHome' resolved to null"
javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:399)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:317)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:204)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:311)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
java.lang.Thread.run(Thread.java:619)
Caused by javax.el.PropertyNotFoundException with message: "/SateiFile.xhtml @123,48 value="#{sateiFileHome.versionCode}": Target Unreachable, identifier 'sateiFileHome' resolved to null"
com.sun.facelets.el.TagValueExpression.getType(TagValueExpression.java:62)
com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:92)
com.sun.faces.renderkit.html_basic.MenuRenderer.convertSelectOneValue(MenuRenderer.java:188)
com.sun.faces.renderkit.html_basic.MenuRenderer.getConvertedValue(MenuRenderer.java:301)
javax.faces.component.UIInput.getConvertedValue(UIInput.java:942)
javax.faces.component.UIInput.validate(UIInput.java:868)
javax.faces.component.UIInput.executeValidate(UIInput.java:1072)
javax.faces.component.UIInput.processValidators(UIInput.java:672)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1058)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1058)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1058)
javax.faces.component.UIForm.processValidators(UIForm.java:235)
org.ajax4jsf.component.AjaxViewRoot$3.invokeContextCallback(AjaxViewRoot.java:447)
org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:240)
org.ajax4jsf.component.AjaxViewRoot.processValidators(AjaxViewRoot.java:463)
com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:206)
org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:399)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:317)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:204)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:311)
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
java.lang.Thread.run(Thread.java:619)
你沒有告訴它在哪個瀏覽器中正常工作。你嘗試過哪些瀏覽器?你也嘗試過IE9嗎?你使用的是最新版本的JSF和Seam?你嘗試升級到最新版本嗎?一些早期版本可能有瀏覽器特定的錯誤。 – BalusC