为什么当前值未在 xhtml jsf 页面中填充

Question

我有一个名为EventBB.java的 Java 文件，我试图在其中获取一个名为event.xhtml的 jsp 页面的值。 但我得到的是下拉列表的前一个值，而不是 UI 中选择的当前值。

EventBB.java文件的代码：

public void getOutageTypeSelected(ValueChangeEvent changeEvent) {
        LOGGER.info("EventBB.getOutageTypeSelected() Method Begin");
        nexEventPopUpFlg=false;
        int outageIndex=0;
        otgIndex=0;
        if (changeEvent.getPhaseId().equals(PhaseId.ANY_PHASE)) {
            changeEvent.setPhaseId(PhaseId.UPDATE_MODEL_VALUES);
            changeEvent.queue();
        } else {
            boolean valid = false;
            boolean validS = false;
            String[] outageArray = changeEvent.getComponent()
                    .getClientId(FacesContext.getCurrentInstance()).split(":");
            LOGGER.info("changeEvent.getComponent().getClientId(FacesContext.getCurrentInstance()) : " + changeEvent.getComponent().getClientId(FacesContext.getCurrentInstance()));
            outageIndex = Integer.valueOf(outageArray[4]);
            LOGGER.info("outageIndex = " + outageIndex);
            otgIndex=outageIndex;
            LOGGER.info("otgIndex = " + otgIndex);
            LOGGER.info("this.getOtgIndex() = " + this.getOtgIndex());
            if (projectsdtoList != null && !projectsdtoList.isEmpty()) {
                projectsdtoList.get(outageIndex).setOutageType(
                        (String) changeEvent.getNewValue());

在日志中，当我 select 在 UI 中的下拉菜单中，我得到1的otgIndex ，但在 UI 中，我得到0 。 我在 UI 代码中做错了什么？

用户界面代码：

 <h:selectOneMenu id="outageTypeList" value="#{projects.outageType}" valueChangeListener="#{editEvent.getOutageTypeSelected}"
                    oncomplete="javascript:enableExceptionReason();return false;"                   
                     disabled="#{(((editEvent.disableFlag or projects.outageDisableFlg) and projects.disableOutageLists) and !editEvent.boolEditBeforeApprovalFlag) and ((empty editEvent.eventInfoDTO.apprRjctFlag or !empty editEvent.strRejectdisableFlag and editEvent.strRejectdisableFlag eq 'R') or (!empty projects.erpProjectId)) or (projects.outageCategory eq 'CANCELLED' ) or (editEvent.eventInfoDTO.eventStatus eq 'CLOSED' or editEvent.eventInfoDTO.eventStatus eq 'CANCELLED'  )}"  style="font-family:Arial;font-Size:10px;">
        <f:selectItems value="#{projects.outageTypeList}"/>     
        <!--  Manual Event Exception Reason Pop-up Start Novermber 2019 -->
        <input type="hidden" value="#{editEvent.sfdcEventAlrtChck}" id="sfdcEventAlrtChckFlgStatus"/>
        <input type="hidden" value="#{editEvent.nexEventPopUpFlg}" id="nexEventPopUpFlgFlgStatus"/>           
        <!--  Manual Event Exception Reason Pop-up End Novermber 2019 -->   
        <a4j:support event="onchange" reRender="eventForm:OTRValidationPanel,eventmessages,npsID,dorId,reportId,orrId,reportColumn, requiredLabel, outageCtgyList"
            oncomplete="openPopupManualEventExceptionReason(#{editEvent.otgIndex},#{editEvent.nexEventPopUpFlg},'manualEventExceptionReasonPanel');"/>
            <!--  Above a4j:support onchange added oncomplete -->   
    </h:selectOneMenu>