xml分成兩半

Question

我想將我的下面的xml分成兩部分，每部分包含兩個stream.Product的4包含，有沒有什麼辦法使用xpath或xp​​ath-node我可以實現這一點，我試過表達式：

/stream.PurchaseOrder/orderLine/products/stream.Product 

它將產品分爲四部分，any1能否幫助我用表達式或某種技術來達到要求？

<stream.PurchaseOrder> 
    <metaData> 
    <supplierId>1001</supplierId> 
    <supplier>Supplier1</supplier> 
    </metaData> 
    <orderLine> 
    <manufacturer>Manufacturer-1993628836</manufacturer> 
    <location>Location-1616142228</location> 
    <products> 
     <stream.Product> 
     <productId>852693979</productId> 
     <productName>ProductName-20</productName> 
     <price>100</price> 
     <model>Model413</model> 
     <quantity>50</quantity> 
     </stream.Product> 
     <stream.Product> 
     <productId>1111</productId> 
     <productName>ProductName11</productName> 
     <price>40</price> 
     <model>Model12</model> 
     <quantity>150</quantity> 
     </stream.Product> 
     <stream.Product> 
     <productId>85</productId> 
     <productName>ProductName3</productName> 
     <price>10</price> 
     <model>Model3</model> 
     <quantity>5</quantity> 
     </stream.Product> 
     <stream.Product> 
     <productId>11</productId> 
     <productName>ProductName4</productName> 
     <price>4</price> 
     <model>Model4</model> 
     <quantity>15</quantity> 
     </stream.Product> 
    </products> 
    </orderLine> 
</stream.PurchaseOrder> 

Answer 1

您需要使用count(/stream.PurchaseOrder/orderLine/products/stream.Product)計算產品元件的數量，然後由2.使用round功能把它圓了，萬一有元素的奇數。然後使用position()功能如下圖所示：

上半年：

/stream.PurchaseOrder/orderLine/products/stream.Product[position()<=round(count(/stream.PurchaseOrder/orderLine/products/stream.Product) div 2)] 

下半年：

/stream.PurchaseOrder/orderLine/products/stream.Product[position()>round(count(/stream.PurchaseOrder/orderLine/products/stream.Product) div 2)]