--Umgebung

Windows 10 64-Bit-Version 1909
- penjdk 11 2018-09-25
- Eclipse IDE for Enterprise Java Developers Version: 2020-03 (4.15.0)
- JSF 2.3.9

2020-07-20 09:49:54:387 X-TrackingId:6079d04e-6554-492e-b2be-e01eed06        ERROR   MyExceptionHandler.handle:63 Cannot format given Object as a Date
java.lang.IllegalArgumentException: Cannot format given Object as a Date
        at java.base/java.text.DateFormat.format(DateFormat.java:338)
        at java.base/java.text.Format.format(Format.java:158)
        at javax.faces.convert.DateTimeConverter$FormatWrapper.format(DateTimeConverter.java:495)
        at javax.faces.convert.DateTimeConverter$FormatWrapper.access$300(DateTimeConverter.java:470)
        at javax.faces.convert.DateTimeConverter.getAsString(DateTimeConverter.java:544)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getFormattedValue(HtmlBasicRenderer.java:491)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getFormattedValue(HtmlBasicRenderer.java:509)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:330)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:143)
        at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:595)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1654)
        at com.sun.faces.facelets.component.RepeatRenderer.encodeChildren(RepeatRenderer.java:64)
        at com.sun.faces.facelets.component.UIRepeat.process(UIRepeat.java:559)
        at com.sun.faces.facelets.component.UIRepeat.encodeChildren(UIRepeat.java:1068)
        at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:278)
        at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:90)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:566)
        at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1647)
        at javax.faces.render.Renderer.encodeChildren(Renderer.java:152)
        at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:566)

  <h:outputText value="#{bean.myTimestamp}" >
     <f:convertDateTime pattern="yyyy/MM/dd HH:mm" timeZone="Japan" />
  </h:outputText>

Ursache: Da das zu konvertierende Datum LocalDateTime ist

    bean.setMyTimestamp(LocalDateTime.now());

Korrespondenz: Geben Sie "localDateTime" als Typ an

Specifies what contents the string value will be formatted to include, or parsed expecting. Valid values are "date", "time", "both", "localDate", "localDateTime", "localTime", "offsetTime", "offsetDateTime", and "zonedDateTime". convertDateTime (JSF 2.3 View Declaration Language: Facelets Variant, generated with VDLDoc.)

`Das wird funktionieren`


  <h:outputText value="#{bean.myTimestamp}" >
     <f:convertDateTime pattern="yyyy/MM/dd HH:mm" timeZone="Japan" type="localDateTime" />
  </h:outputText>

Ich mache mir Sorgen um etwas ...