Question

我有XML数据，其结构如下。我正在尝试评估Xid值，以查看停靠点是否为多个值，例如位置1或位置2，但仅匹配它在结构中找到的第一个匹配项。然后，我需要它来输出该停靠点的“日期”值。

<ShipmentStop>
    <StopSequence>1</StopSequence>
        <LocationRef>
            <LocationGid>
                <Gid>
                    <Xid>LOCATION 1</Xid>
                </Gid>
            </LocationGid>
        <ArrivalTime>
            <EventTime>
                <EstimatedTime>
                    <Date>20181128070000</Date>
                </EstimatedTime>
            </EventTime>
        </ArrivalTime>
</ShipmentStop>
<ShipmentStop>
    <StopSequence>2</StopSequence>
        <LocationRef>
            <LocationGid>
                <Gid>
                    <Xid>LOCATION 2</Xid>
                </Gid>
            </LocationGid>
        <ArrivalTime>
            <EventTime>
                <EstimatedTime>
                    <Date>20181129070000</Date>
                </EstimatedTime>
            </EventTime>
        </ArrivalTime>
</ShipmentStop>

我正在尝试构建以下代码，但是遇到了一些问题。

<xsl:for-each select="ShipmentStop[/LocationRef/LocationGid/Gid/Xid='LOCATION 1' or /LocationRef/LocationGid/Gid/Xid='LOCATION 2'][1]">
    <ArrivalTime>
        <xsl:value-of select="ArrivalTime/EventTime/EstimatedTime/Date"/>                               
    </ArrivalTime>
</xsl:for-each>

Answer 1

我在下面假设格式正确的XML。我添加了一个名为root的根节点：

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <ShipmentStop>
        <StopSequence>1</StopSequence>
        <LocationRef>
            <LocationGid>
                <Gid>
                    <Xid>LOCATION 1</Xid>
                </Gid>
            </LocationGid>
        </LocationRef>
        <ArrivalTime>
            <EventTime>
                <EstimatedTime>
                    <Date>20181128070000</Date>
                </EstimatedTime>
            </EventTime>
        </ArrivalTime>
    </ShipmentStop>
    <ShipmentStop>
        <StopSequence>2</StopSequence>
        <LocationRef>
            <LocationGid>
                <Gid>
                    <Xid>LOCATION 2</Xid>
                </Gid>
            </LocationGid>
        </LocationRef>
        <ArrivalTime>
            <EventTime>
                <EstimatedTime>
                    <Date>20181129070000</Date>
                </EstimatedTime>
            </EventTime>
        </ArrivalTime>
    </ShipmentStop>    
</root>

您在原始xpath中使用过

ShipmentStop[/LocationRef/LocationGid/Gid/Xid='LOCATION 1' 
    or /LocationRef/LocationGid/Gid/Xid='LOCATION 2'][1]

请注意在/中使用/LocationRef。当您这样做时，您正在从XML的根节点进行搜索，因此它将失败。要使用上下文节点，只需在斜杠前添加一个句点，例如

ShipmentStop[./LocationRef/LocationGid/Gid/Xid='LOCATION 1' 
    or ./LocationRef/LocationGid/Gid/Xid='LOCATION 2'][1]

，或者您可以删除xpath中的./。如：

ShipmentStop[LocationRef/LocationGid/Gid/Xid='LOCATION 1' 
    or LocationRef/LocationGid/Gid/Xid='LOCATION 2'][1]

因为LocationRef是ShipmentStop节点的子代。

XSL匹配第一个出现在子节点中的值，然后从同级节点中提取值

1 个答案: