在數據表中使用List <CustomObject>時出現NumberFormatException

我在嘗試在數據表中顯示列表時遇到NumberFormatException。我知道發生這種例外的一般原因，但無法弄清楚它適用於我的情況。在數據表中使用List <CustomObject>時出現NumberFormatException

這是我冰：數據表顯示的代碼

<ice:dataTable id="transformations" var="transformationList" width="700" 
value="#{ShowStatusBean.transformationStatusList}" rows="10"  
partialTriggers="refreshButton" autoSubmit="true"> 

<ice:column> 
<ice:outputText value="#{transformationList.businessDate}" /> 
</ice:column> 

<ice:column> 
<ice:outputText value="#{transformationList.service}" /> 
</ice:column> 

<ice:column> 
<ice:outputText value="#{transformationList.status}" /> 
</ice:column> 

</ice:dataTable>

而且我支持bean代碼

public List<TransformationBean> getTransformationStatusList() { 
    transformationStatusList = new ArrayList<TransformationBean>(); 
    transformationStatusList.add(new TransformationBean("2012-01-01", "serviceName", "status1")); 
    transformationStatusList.add(new TransformationBean("2012-01-02", "serviceName2", "status2")); 
    return transformationStatusList; 
}

最後的堆棧跟蹤

23:59:57 ERROR [f-tuning)'] D2DFaceletViewHandler  - Problem in renderResponse: For input string: "businessDate" 
java.lang.NumberFormatException: For input string: "businessDate" 
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) 
    at java.lang.Integer.parseInt(Integer.java:449) 
    at java.lang.Integer.parseInt(Integer.java:499) 
    at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:138) 
    at com.sun.el.parser.AstValue.getValue(AstValue.java:96) 
    at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:183) 
    at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71) 
    at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56) 
    at javax.faces.component.UIOutput.getValue(UIOutput.java:80) 
    at com.icesoft.faces.renderkit.dom_html_basic.OutputTextRenderer.encodeEnd(OutputTextRenderer.java:91) 
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:369) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:364) 
    at com.icesoft.faces.component.ext.renderkit.TableRenderer.encodeChildren(TableRenderer.java:896) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357) 
    at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:95) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527) 
    at com.icesoft.faces.component.util.CustomComponentUtils.renderChild(CustomComponentUtils.java:338) 
    at com.icesoft.faces.component.panelpopup.PanelPopupRenderer.encodeBegin(PanelPopupRenderer.java:240) 
    at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:515) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:355) 
    at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:95) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:364) 
    at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:95) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357) 
    at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:95) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527) 
    at com.icesoft.faces.component.util.CustomComponentUtils.renderChild(CustomComponentUtils.java:338) 
    at com.icesoft.faces.component.paneltabset.PanelTabSetRenderer.writeTabCell(PanelTabSetRenderer.java:983) 
    at com.icesoft.faces.component.paneltabset.PanelTabSetRenderer.encodeEnd(PanelTabSetRenderer.java:422) 
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539) 
    at javax.faces.component.UIData.encodeEnd(UIData.java:573) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:369) 
    at com.icesoft.faces.renderkit.dom_html_basic.GridRenderer.encodeChildren(GridRenderer.java:207) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357) 
    at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:95) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:364) 
    at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:95) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:357) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:364) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:364) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:364) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:364) 
    at com.icesoft.faces.renderkit.dom_html_basic.DomBasicRenderer.encodeParentAndChildren(DomBasicRenderer.java:364) 
    at com.icesoft.faces.renderkit.dom_html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:95) 
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:527) 
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:490) 
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:495) 
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:495) 
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:495) 
    at com.icesoft.faces.application.D2DViewHandler.renderResponse(D2DViewHandler.java:495) 
    at com.icesoft.faces.facelets.D2DFaceletViewHandler.renderResponse(D2DFaceletViewHandler.java:281) 
    at com.icesoft.faces.application.D2DViewHandler.renderView(D2DViewHandler.java:155) 
    at com.icesoft.faces.application.ViewHandlerProxy.renderView(ViewHandlerProxy.java:70) 
    at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41) 
    at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132) 
    at com.icesoft.faces.webapp.http.core.JsfLifecycleExecutor.apply(JsfLifecycleExecutor.java:51) 
    at com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.renderCycle(ReceiveSendUpdates.java:171) 
    at com.icesoft.faces.webapp.http.core.ReceiveSendUpdates.service(ReceiveSendUpdates.java:112) 
    at com.icesoft.faces.webapp.http.core.RequestVerifier.service(RequestVerifier.java:65) 
    at com.icesoft.faces.webapp.http.servlet.BasicAdaptingServlet.service(BasicAdaptingServlet.java:48) 
    at com.icesoft.faces.webapp.http.servlet.SessionVerifier.service(SessionVerifier.java:58) 
    at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:55) 
    at com.icesoft.faces.webapp.http.servlet.SessionDispatcher.service(SessionDispatcher.java:77) 
    at com.icesoft.faces.webapp.http.servlet.PathDispatcher.service(PathDispatcher.java:55) 
    at com.icesoft.faces.webapp.http.servlet.MainServlet.service(MainServlet.java:192) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) 
    at com.icesoft.faces.webapp.xmlhttp.BlockingServlet.service(BlockingServlet.java:67) 
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) 
    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125) 
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301) 
    at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26) 
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) 
    at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27) 
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56) 
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3730) 
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3696) 
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) 
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) 
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2273) 
    at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179) 
    at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490) 
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256) 
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

而且我TransformationBean

public class TransformationBean{ 

    private String businessDate; 
    private String service; 
    private String status; 

    // constructor 
    // getter and setters 
    }

我研究過這個問題，發現了很多答案。但它看起來像我沒有做任何這些錯誤..所以不知道我錯過了什麼。這些是我發現的關於同一問題的其他鏈接。

Number format exception when returning values from database(JPA)

NumberFormatException for input String

http://jforum.icesoft.org/JForum/posts/list/16645.page

所有這些提到<>正在從Java代碼返回的列表是Object []的名單這就是爲什麼它試圖讓通過將屬性視爲索引屬性來處理數組條目。但是，從我的代碼中，清楚地知道我沒有返回Object []列表，但是已正確定義列表

我還測試了JUNit測試用例中的java代碼，並驗證了返回類型是TransformationBean對象列表。

我不正確做什麼，鄉親？

來源

2012-06-13 prashanth chandran

你能告訴我什麼「** TransformationBean **」是什麼意思？並告訴我類型爲TransformationBean的參數。 – Ponmalar

TrasformationBean只是我的POJO ..將它添加到 –

以上的原始文章中您是否嘗試將列表作爲託管bean的屬性並在getter中使用方法填充它？ –

我能解決這個問題。不知道是什麼問題。我剛剛創建了一個包含我的xhtml顯示代碼的新文件，其中包含相同的一組信息。我唯一改變的是對變種名稱更改爲豆像這樣..

<ice:dataTable id="transformations" var="bean" width="700" 
value="#{ShowStatusBean.transformationStatusList}" rows="10"  
partialTriggers="refreshButton" autoSubmit="true"> 

<ice:column> 
<ice:outputText value="#{bean.businessDate}" /> 
</ice:column> 

<ice:column> 
<ice:outputText value="#{bean.service}" /> 
</ice:column> 

<ice:column> 
<ice:outputText value="#{bean.status}" /> 
</ice:column> 

</ice:dataTable>`

，並開始工作..無厘頭..也許在應用服務器中緩存一些以前的版本是不正確的..但看起來像我的代碼一直是正確的..

來源

2012-06-13 23:39:23

在數據表中使用List <CustomObject>時出現NumberFormatException

回答

相關問題