如何测试XML文档以确定任何id属性是否具有重复值？
示例JSFF：
<?xml version='1.0' encoding='UTF-8'?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
xmlns:af="http://xmlns.oracle.com/adf/faces/rich"
xmlns:c="http://java.sun.com/jsp/jstl/core"
xmlns:f="http://java.sun.com/jsf/core">
<c:set var="bundle" value="#{adfBundle['oracle.communications.inventory.ui.common.bundle.InventoryUIOverrideBundle']}"/>
<af:pageTemplate viewId="/oracle/communications/platform/templates/fragments/CommsUIShellMainArea.jspx" id="pt1">
<f:facet name="localArea">
<af:panelStretchLayout id="pgl1" binding="#{backingBeanScope.BI_summary_panelGroupLayout}" topHeight="20">
<f:facet name="top">
<af:panelHeader text="#{inventoryUIBundle.BUSINESS_INTERACTION_SUMMARY} - #{pageFlowScope.BusinessInteractionSummaryBean.displayInfo}"
id="PAGE_TITLE" styleClass="invSummaryPanelHeader" helpTopicId="OHW_busIntSummary">
<f:facet name="context"/>
<f:facet name="menuBar">
<af:group rendered="#{!pageFlowScope.BusinessInteractionSummaryBean.previewLayout}">
<af:menuBar id="menuBar2">
<af:menu id="menu6" binding="#{pageFlowScope.BusinessInteractionSummaryBean.actionsMenu}" styleClass="invSummaryMenu"
disabled="#{pageFlowScope.BusinessInteractionSummaryBean.actionsMenuDisabled}"/>
<af:separator id="separator1" styleClass="invSummarySeparator"/>
</af:menuBar>
</af:group>
</f:facet>
</af:panelHeader>
</f:facet>
<f:facet name="center">
<af:panelGroupLayout layout="scroll" id="pgl23">
<af:panelHeader text="" id="ld12">
<af:showDetailHeader text="#{inventoryUIBundle.BUSINESS_INTERACTION_INFO}" disclosed="true" id="sdh2"
styleClass="invSummaryShowDetailHeader">
<f:facet name="legend"/>
<f:facet name="info"/>
<f:facet name="menuBar"/>
<f:facet name="toolbar">
<af:toolbar id="t1">
<af:commandButton text="#{inventoryUIBundle.EDIT}" action="edit" id="cb1666" actionListener="#{bindings.openSubTaskForEdit.execute}"
rendered="#{!pageFlowScope.BusinessInteractionSummaryBean.previewLayout}"
disabled="#{pageFlowScope.BusinessInteractionSummaryBean.editButtonDisabled or !securityContext.taskflowViewable['/WEB-INF/oracle/communications/inventory/ui/businessinteraction/flow/BusinessInteractionEditFlow.xml#BusinessInteractionEditFlow']}">
<af:setActionListener from="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.oid}" to="#{objectId}"/>
<af:setActionListener from="false" to="#{addMode}"/>
</af:commandButton>
</af:toolbar>
</f:facet>
<f:facet name="context"/>
<af:panelFormLayout id="bi" maxColumns="2" rows="2" labelWidth="33%" fieldWidth="67%">
<af:panelLabelAndMessage label="#{inventoryUIBundle.ID}"
id="bi-id">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.id}" id="ot4"/>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage label="#{inventoryUIBundle.NAME}"
id="bi-name">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.name}" id="ot3"/>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage label="#{inventoryUIBundle.SPECIFICATION}"
id="bi-specification">
<af:commandLink action="SpecificationSummary" id="clSpec" actionListener="#{bindings.openSubTaskForSpec.execute}">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.specification.name}" id="ot10"/>
<af:setActionListener from="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.specification.oid}" to="#{specObjectId}"/>
</af:commandLink>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage label="#{inventoryUIBundle.EFFECTIVE_DATE}"
id="bi-effdate">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.effDate}"
id="ot1">
<af:convertDateTime pattern="#{pageFlowScope.BusinessInteractionSummaryBean.dateTimeFormat}"/>
</af:outputText>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage label="#{inventoryUIBundle.STATUS}"
id="bi-adminstate">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.inventoryStatus}"
id="ot6"/>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage label="#{inventoryUIBundle.DESCRIPTION}"
id="bi-description">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.description}"
id="ot2"/>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage label="#{inventoryUIBundle.LAST_MODIFIED_DATE}" id="bi-lmd" rendered="false">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.lastModifiedDate}" id="ot9"/>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage label="#{inventoryUIBundle.LAST_MODIFIED_USER}" id="bi-lmu" rendered="false">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.lastModifiedUser}"
id="ot12"/>
</af:panelLabelAndMessage>
</af:panelFormLayout>
<!-- show detail collapsible section for external identity -->
<af:showDetail disclosed="#{pageFlowScope.BusinessInteractionSummaryBean.externalIdentityPopulated}" id="sd1"
disclosedText="#{inventoryUIBundle.EXTERNAL_SYSTEM}" undisclosedText="#{inventoryUIBundle.EXTERNAL_SYSTEM}"
inlineStyle="width:50%;">
<af:panelFormLayout id="pfl101" maxColumns="1" rows="2" fieldWidth="69%" labelWidth="31%">
<af:panelLabelAndMessage label="#{inventoryUIBundle.EXTERNAL_MANAGEMENT_DOMAIN}" id="plam101">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.externalManagementDomain}" id="ot101"/>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage label="#{inventoryUIBundle.EXTERNAL_NAME}" id="plam102">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.externalName}" id="ot102"/>
</af:panelLabelAndMessage>
<af:panelLabelAndMessage label="#{inventoryUIBundle.EXTERNAL_OBJECT_ID}" id="plam103">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.entityObject.externalObjectId}" id="ot103"/>
</af:panelLabelAndMessage>
</af:panelFormLayout>
</af:showDetail>
</af:showDetailHeader>
<af:group rendered="#{!pageFlowScope.BusinessInteractionSummaryBean.previewLayout}" id ="group2" >
<af:spacer width="10" height="10" id="sp1"/>
<!-- BI Hierarchy -->
<af:showDetailHeader text="#{inventoryUIBundle.BUSINESS_INTERACTION_HIERARCHY}"
disclosed="true" id="sdh5">
<f:facet name="context"/>
<f:facet name="menuBar"/>
<f:facet name="toolbar"/>
<f:facet name="legend"/>
<f:facet name="info"/>
<af:panelCollection id="pc2" styleClass="invSummaryPanelCollection" featuresOff="freeze wrap">
<f:facet name="menus"/>
<f:facet name="toolbar"/>
<f:facet name="statusbar"/>
<af:treeTable id="biTreeTable"
value="#{pageFlowScope.BusinessInteractionTreeBean.treeModel}"
binding="#{backingBeanScope.BI_treeBinding}"
disclosedRowKeys="#{pageFlowScope.BusinessInteractionTreeBean.treeDisclosedRowKeys}"
var="node" rowSelection="single" styleClass="invSummaryTree"
fetchSize="#{pageFlowScope.BusinessInteractionSummaryBean.fetchSize}"
contextMenuSelect="true" contentDelivery="immediate"
selectionListener="#{pageFlowScope.BusinessInteractionTreeBean.nodeSelectedEvent}"
rowBandingInterval="0" expandAllEnabled="#{pageFlowScope.BusinessInteractionTreeBean.expandAllEnabled}"
horizontalGridVisible="false">
<f:facet name="nodeStamp">
<af:column id="c9" width="500">
<af:panelGroupLayout id="pgl2">
<af:image source="#{node.data.icon}" id="nodeIcon" styleClass="invSummaryImage" shortDesc="icon"/>
<af:switcher id="idSwitcher" defaultFacet="false" facetName="#{pageFlowScope.BusinessInteractionTreeBean.treeModel.depth le 0}">
<f:facet name="false">
<af:commandLink action="#{pageFlowScope.BusinessInteractionTreeBean.view}" id="cl1" actionListener="#{pageFlowScope.BusinessInteractionTreeBean.registerRecentItem}">
<af:setActionListener from="#{pageFlowScope.BusinessInteractionTreeBean.selectedTreeNode.object.oid}"
to="#{pageFlowScope.objectId}"/>
<af:outputText value="#{node.data.label}" id="outputText22"/>
</af:commandLink>
</f:facet>
<f:facet name="true">
<af:outputText value="#{node.data.label}" id="ot8"/>
</f:facet>
</af:switcher>
</af:panelGroupLayout>
</af:column>
</f:facet>
<f:facet name="contextMenu">
<af:popup contentDelivery="lazyUncached" id="popupContext"
partialTriggers="::biTreeTable">
<af:menu id="rootNodeMenu" text="rootNodeMenu">
<af:commandMenuItem text="#{inventoryUIBundle.ADD_CHILD}" id="treeMenuItem1" selected="true"
rendered="#{(pageFlowScope.BusinessInteractionTreeBean.rootNodePopupMenu || pageFlowScope.BusinessInteractionTreeBean.childNodePopupMenu) and securityContext.userGrantedResource['resourceType=PAGE_ACTION,resourceName=BusinessInteraction.ASSOCIATE_CHILD_BI;action=view']}">
<af:showPopupBehavior popupId="::childBIPopup"/>
</af:commandMenuItem>
<af:commandMenuItem text="#{inventoryUIBundle.REMOVE}" id="treeMenuItem2"
actionListener="#{pageFlowScope.BusinessInteractionTreeBean.removeFromBusinessInteraction}"
rendered="#{pageFlowScope.BusinessInteractionTreeBean.childNodePopupMenu and securityContext.userGrantedResource['resourceType=PAGE_ACTION;resourceName=BusinessInteraction.DISASSOCIATE_CHILD_BI;action=view']}">
<af:clientListener method="goRefreshEntity"
type="click"/>
<af:serverListener type="refreshEntity"
method="#{pageFlowScope.BusinessInteractionTreeBean.refreshTree}"/>
</af:commandMenuItem>
</af:menu>
</af:popup>
</f:facet>
</af:treeTable>
<af:popup id="childBIPopup" binding="#{backingBeanScope.popupChildBIBinding}" contentDelivery="lazyUncached">
<af:dialog title="#{inventoryUIBundle.BUSINESS_INTERACTION_ASSOCIATE_CHILDREN}" id="d1" type="none">
<af:panelStretchLayout id="psl_1" styleClass="invCommonPanelStretchLayout">
<f:facet name="center">
<af:region value="#{bindings.BusinessInteractionSearchResultsFlow1.regionModel}"
id="r2" styleClass="invSummaryRegion"/>
</f:facet>
</af:panelStretchLayout>
</af:dialog>
<af:clientListener method="goRefreshEntity" type="popupClosed"/>
<af:serverListener type="refreshEntity" method="#{pageFlowScope.BusinessInteractionTreeBean.refreshTree}"/>
</af:popup>
</af:panelCollection>
</af:showDetailHeader>
<!--Parent BI-->
<af:spacer width="10" height="10" id="sp2"/>
<af:showDetailHeader text="#{inventoryUIBundle.PARENT_BUSINESS_INTERACTIONS}"
disclosed="true" id="sdh3"
styleClass="invSummaryShowDetailHeader">
<f:facet name="legend"/>
<f:facet name="info"/>
<f:facet name="menuBar"/>
<f:facet name="toolbar"/>
<f:facet name="context"/>
<af:panelCollection id="pc1" styleClass="invSummaryPanelCollection">
<f:facet name="menus"/>
<f:facet name="toolbar"/>
<f:facet name="statusbar">
<af:toolbar id="tb2">
<af:outputText value="#{inventoryUIBundle.ROW_COUNT} #{(pageFlowScope.BusinessInteractionSummaryBean.parentBusinessInteractionCollectonModel.rowCount lt 0) ? 0 : pageFlowScope.BusinessInteractionSummaryBean.parentBusinessInteractionCollectonModel.rowCount}"
id="ol1" styleClass="invSearchOutputLabel" partialTriggers="t2" binding="#{backingBeanScope.totalTPResultsLabel}"/>
</af:toolbar>
</f:facet>
<af:table value="#{pageFlowScope.BusinessInteractionSummaryBean.parentBusinessInteractionCollectonModel}"
var="row"
rows="#{bindings.BusinessInteraction.rangeSize}"
emptyText="#{inventoryUIBundle.TABLE_EMPTY_TEXT_NO_ROWS_YET}"
fetchSize="#{bindings.BusinessInteraction.rangeSize}"
autoHeightRows="#{pageFlowScope.BusinessInteractionSummaryBean.portletHeight}" contentDelivery="immediate"
rowBandingInterval="0" styleClass="invSummaryTable"
selectedRowKeys="#{bindings.BusinessInteraction.collectionModel.selectedRow}"
selectionListener="#{pageFlowScope.BusinessInteractionSummaryBean.parentBusinessInteractionSelectionListener}"
rowSelection="single" id="t2">
<af:column sortProperty="id" sortable="true"
headerText="#{inventoryUIBundle.ID}"
id="c1">
<af:commandLink action="init" id = "cl2" actionListener="#{bindings.openSubTaskForParentBusinessInteraction.execute}">
<af:outputText value="#{row.id}" id="ot9"/>
<af:setActionListener from="#{row.oid}" to="#{pageFlowScope.objectId}"/>
</af:commandLink>
</af:column>
<af:column sortProperty="name" sortable="true"
headerText="#{inventoryUIBundle.NAME}" id="c4">
<af:outputText value="#{row.name}" id="ot5"/>
</af:column>
<af:column sortProperty="specification.name" sortable="true"
headerText="#{inventoryUIBundle.SPECIFICATION}"
id="c3">
<af:commandLink action="SpecificationSummary" id="clSpec_ot7">
<af:outputText value="#{row.specification.name}" id="ot7"/>
<af:setActionListener from="#{row.specification.oid}" to="#{specObjectId}"/>
</af:commandLink>
</af:column>
<af:column sortProperty="adminState" sortable="true"
headerText="#{inventoryUIBundle.STATUS}" id="c8">
<af:outputText value="#{pageFlowScope.BusinessInteractionSummaryBean.parentStatus}"
id="ot81"/>
</af:column>
<af:column sortProperty="effDate" sortable="true"
headerText="#{inventoryUIBundle.EFFECTIVE_DATE}"
id="c2">
<af:outputText value="#{row.effDate}" id="ot11">
<af:convertDateTime pattern="#{pageFlowScope.BusinessInteractionResultsBean.dateTimeFormat}"/>
</af:outputText>
</af:column>
</af:table>
</af:panelCollection>
</af:showDetailHeader>
<af:spacer width="10" height="10" id="sp3"/>
<af:region value="#{bindings.BusinessInteractionItemListFlow1.regionModel}" id="r1"/>
<af:spacer width="10" height="10" id="bs3"/>
<af:showDetailHeader text="#{inventoryUIBundle.ENTITY_ATTACHMENTS}" disclosed="true" id="sdh32" styleClass="invSummaryShowDetailHeader">
<f:facet name="legend"/>
<f:facet name="info"/>
<f:facet name="menuBar"/>
<f:facet name="toolbar"/>
<f:facet name="context"/>
<af:panelCollection id="pc16" styleClass="invSummaryPanelCollection">
<f:facet name="menus"/>
<f:facet name="toolbar"/>
<f:facet name="statusbar">
<af:toolbar id="tb23">
<af:outputText value="#{inventoryUIBundle.ROW_COUNT} #{(pageFlowScope.BusinessInteractionSummaryBean.attachmentCollectionModel.rowCount lt 0) ? 0 : pageFlowScope.BusinessInteractionSummaryBean.attachmentCollectionModel.rowCount}"
id="ol134" styleClass="invSearchOutputLabel" noWrap="true" partialTriggers="attTab" binding="#{backingBeanScope.totalResultsLabel}"/>
</af:toolbar>
</f:facet>
<af:table value="#{pageFlowScope.BusinessInteractionSummaryBean.attachmentCollectionModel}" var="row"
emptyText="#{inventoryUIBundle.TABLE_EMPTY_TEXT_NO_ROWS_YET}"
binding="#{pageFlowScope.BusinessInteractionSummaryBean.attachmentTable}"
autoHeightRows="#{pageFlowScope.BusinessInteractionSummaryBean.portletHeight}" contentDelivery="immediate"
rowBandingInterval="0" styleClass="invSummaryTable"
rowSelection="single" id="attTab">
<af:column headerText="#{inventoryUIBundle.SEQUENCE_NUMBER}" id="x1">
<af:commandLink id="xl1" action="BusinessInteractionAttachmentSummary" actionListener="#{bindings.openSubTaskForBIAttachment.execute}">
<af:outputText value="#{row.sequenceNumber}" id="xot9"/>
<af:setActionListener from="#{row.biAttachmentObjectID}" to="#{pageFlowScope.objectId}"/>
</af:commandLink>
</af:column>
<af:column headerText="#{inventoryUIBundle.NAME}" id="x3">
<af:commandLink id="xl2" action="BusinessInteractionAttachmentSummary" actionListener="#{bindings.openSubTaskForBIAttachment.execute}">
<af:outputText value="#{row.name}" id="oxt7"/>
<af:setActionListener from="#{row.biAttachmentObjectID}" to="#{pageFlowScope.objectId}"/>
</af:commandLink>
</af:column>
<af:column headerText="#{inventoryUIBundle.TIMESTAMP}" id="x4">
<af:outputText value="#{row.timestamp}" id="xot5"/>
</af:column>
</af:table>
</af:panelCollection>
</af:showDetailHeader>
</af:group>
</af:panelHeader>
</af:panelGroupLayout>
</f:facet>
</af:panelStretchLayout>
</f:facet>
<f:facet name="contextualArea"/>
</af:pageTemplate>
</jsp:root>
答案 0 :(得分：1)
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
Document doc = factory.newDocumentBuilder().parse(Dupes.class.getResourceAsStream("jsff.xml"));
XPathExpression expr = XPathFactory.newInstance().newXPath().compile("//@id");
Set<String> ids = new HashSet<String>();
NodeList nodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
int dupes = 0;
for (int i = 0; i < nodes.getLength(); i++) {
String id = nodes.item(i).getNodeValue();
if (ids.contains(id)) {
System.out.format("%s is duplicate\n\n",id);
dupes++;
} else {
ids.add(id);
}
}
System.out.format("Total ids = %d\nTotal Duplicates = %d", ids.size(), dupes);
输出：
ot9 is duplicate
Total ids = 90
Total Duplicates = 1