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在下面的例子1到訪問值Vdd的的DS2438我可以使用下面的語法的單位:Xpath的試驗與命名空間
(//*[local-name() = 'Vdd'])[2]
找到5.550000
和(//*[local-name() = 'Vdd'])[1]
找到4.280000
。
每個<owd_DS2438>
鏈接到物理捕手,其中的每一個是由唯一的ID <ROMId>
識別。 XML文件中的位置可以更改。
問題:如何使用XPATH在特定的<ROMId>
的以下兩個示例中找到相同的值?
實施例1:
<?xml version="1.0" encoding="UTF-8"?>
<Devices-Detail-Response xmlns="http://www.embeddeddatasystems.com/schema/owserver" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<DeviceName>OWServer_v2-Enet</DeviceName>
<HostName>EDSOWSERVER2</HostName>
<MACAddress>00:04:A3:F8:62:7B</MACAddress>
<DateTime>2014-09-06 01:02:39</DateTime>
<owd_DS2438 Description="Smart battery monitor">
<Name>DS2438</Name>
<ROMId>C100000140ABC126</ROMId>
<Temperature Units="Centigrade">20.9375</Temperature>
<Vdd Units="Volts">4.280000</Vdd>
<Vad Units="Volts">10.230000</Vad>
</owd_DS2438>
<owd_DS2438 Description="Smart battery monitor">
<Name>DS2438</Name>
<ROMId>C100000140ABC127</ROMId>
<Temperature Units="Centigrade">20.9375</Temperature>
<Vdd Units="Volts">5.550000</Vdd>
<Vad Units="Volts">10.230000</Vad>
</owd_DS2438>
</Devices-Detail-Response>
實施例2:
<?xml version="1.0" encoding="UTF-8"?>
<Devices-Detail-Response xmlns="http://www.embeddeddatasystems.com/schema/owserver" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<DeviceName>OWServer_v2-Enet</DeviceName>
<HostName>EDSOWSERVER2</HostName>
<MACAddress>00:04:A3:F8:62:7B</MACAddress>
<DateTime>2014-09-06 01:02:39</DateTime>
<owd_DS2438 Description="Smart battery monitor">
<Name>DS2438</Name>
<ROMId>C100000140ABC127</ROMId>
<Temperature Units="Centigrade">20.9375</Temperature>
<Vdd Units="Volts">5.550000</Vdd>
<Vad Units="Volts">10.230000</Vad>
</owd_DS2438>
<owd_DS2438 Description="Smart battery monitor">
<Name>DS2438</Name>
<ROMId>C100000140ABC126</ROMId>
<Temperature Units="Centigrade">20.9375</Temperature>
<Vdd Units="Volts">4.280000</Vdd>
<Vad Units="Volts">10.230000</Vad>
</owd_DS2438>
</Devices-Detail-Response>
由於事先 斯蒂芬
我的答案是否適合你? – 2014-10-17 12:23:08