在t-sql中解析Xml，在根目录内的多个级别使用XQuery选择器进行发布，并从所选节点中解析值

问题描述

我对解析Xml中的值非常陌生，希望有人对Xml（XQUERY / XPATH）有所了解，可以向我解释如何使用t-sql从以下Xml中解析某些值。我将包括为证明我不只是要求某人为我而做的代码尝试。

给出以下Soap Xml响应：

    <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:aah:remtp:schemas:PlaceOrderResponse:1.00">
       <SOAP-ENV:Body>
          <PlaceOrderResponse xmlns="urn:aah:remtp:schemas:PlaceOrderResponse:1.00">
             <StatusCode>0</StatusCode>
             <TextReply>Successful</TextReply>
             <PlaceOrderReplyMessage>
                <TransmissionId>aac1e254-bc05-4d69-b04d-31d5fead314e</TransmissionId>
                <ReplyOrder>
                   <TrackingId>aac1e254-bc05-4d69-b04d-31d5fead314e</TrackingId>
                   <CustomerAccount>A_TEST</CustomerAccount>
                   <CustomerOrder>aac1e254-bc05-4d69-b04d-31d5fead314e</CustomerOrder>
                   <ReplyGroup>
                      <LineNumber>1</LineNumber>
                      <ReplyItem>
                         <ReplyCode>0</ReplyCode>
                         <ReplyData>10</ReplyData>
                         <ReplyMsg>Successful</ReplyMsg>
                      </ReplyItem>
                   </ReplyGroup>
                   <ReplyGroup>
                      <LineNumber>2</LineNumber>
                      <ReplyItem>
                         <ReplyCode>0</ReplyCode>
                         <ReplyData>15</ReplyData>
                         <ReplyMsg>Successful</ReplyMsg>
                      </ReplyItem>
                   </ReplyGroup>
                </ReplyOrder>
             </PlaceOrderReplyMessage>
          </PlaceOrderResponse>
       </SOAP-ENV:Body>
    </SOAP-ENV:Envelope>

然后将ReplyGroups解析为Table变量（一旦我对选择进行了排序，那应该很容易-我认为）。

我尝试了以下操作：

    DECLARE @XmlDocument XML
    DECLARE @StatusCode VARCHAR(MAX)
    DECLARE @TextReply VARCHAR(MAX)
    DECLARE @CustomerOrder VARCHAR(MAX)
    
    SELECT @XmlDocument = '<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:aah:remtp:schemas:PlaceOrderResponse:1.00">
       <SOAP-ENV:Body>
          <PlaceOrderResponse xmlns="urn:aah:remtp:schemas:PlaceOrderResponse:1.00">
             <StatusCode>0</StatusCode>
             <TextReply>Successful</TextReply>
             <PlaceOrderReplyMessage>
                <TransmissionId>aac1e254-bc05-4d69-b04d-31d5fead314e</TransmissionId>
                <ReplyOrder>
                   <TrackingId>aac1e254-bc05-4d69-b04d-31d5fead314e</TrackingId>
                   <CustomerAccount>A_TEST</CustomerAccount>
                   <CustomerOrder>aac1e254-bc05-4d69-b04d-31d5fead314e</CustomerOrder>
                   <ReplyGroup>
                      <LineNumber>1</LineNumber>
                      <ReplyItem>
                         <ReplyCode>0</ReplyCode>
                         <ReplyData>10</ReplyData>
                         <ReplyMsg>Successful</ReplyMsg>
                      </ReplyItem>
                   </ReplyGroup>
                   <ReplyGroup>
                      <LineNumber>2</LineNumber>
                      <ReplyItem>
                         <ReplyCode>0</ReplyCode>
                         <ReplyData>15</ReplyData>
                         <ReplyMsg>Successful</ReplyMsg>
                      </ReplyItem>
                   </ReplyGroup>
                </ReplyOrder>
             </PlaceOrderReplyMessage>
          </PlaceOrderResponse>
       </SOAP-ENV:Body>
    </SOAP-ENV:Envelope>'
    
            --  PlaceOrderResponse/StatusCode
    SELECT @StatusCode = CONVERT(VARCHAR(MAX),@XmlDocument.query('/PlaceOrderResponse/StatusCode'))
    
            --  PlaceOrderResponse/TextReply
    SELECT @TextReply = CONVERT(VARCHAR(MAX),@XmlDocument.query('/PlaceOrderResponse/TextReply'))
    
            --  PlaceOrderResponse/PlaceOrderReplyMessage/ReplyOrder/CustomerOrder
    SELECT @CustomerOrder = CONVERT(VARCHAR(MAX),@XmlDocument.query('/PlaceOrderResponse/PlaceOrderReplyMessage/ReplyOrder'))
    
    
    
    --SELECT @StatusCode As StatusCode,@TextReply As TextReply,@CustomerOrder As CustomerOrder
    --INSERT INTO @ResponseLines(LineNumber,ReplyCode,ReplyData,ReplyMessage)
    SELECT @XmlDocument.query('/PlaceOrderResponse/PlaceOrderReplyMessage/ReplyOrder/ReplyGroup')

不幸的是，此后所有变量都是空的，我认为这是因为我不是从选择器的根节点开始的。另外，如果我删除了两个肥皂信封节点和任何命名空间，则将填充值，但填充的是实际节点，而不是每个节点内部的值。

如果有人可以告诉我，我将不胜感激：

1. 如何从<PlaceOrderResponse>节点而不是根节点开始查询Xml以获取正确的节点
2. 如何从我正在查看的(StatusCode,ReplyText,CustomerOrder)节点内部解析值。
3. 如何将多个<ReplyGroup>项目选择到一个表格结构中。请注意，在Xml树层次结构中，<LineNumber>元素比与其关联的<ReplyItem>高。

解决方法

您需要照顾名称空间。在下面查看操作方法。

SQL

DECLARE @XmlDocument XML
DECLARE @StatusCode VARCHAR(MAX)
DECLARE @TextReply VARCHAR(MAX)
DECLARE @CustomerOrder VARCHAR(MAX)
    
SELECT @XmlDocument = 
N'<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
                   xmlns:ns1="urn:aah:remtp:schemas:PlaceOrderResponse:1.00">
    <SOAP-ENV:Body>
        <PlaceOrderResponse xmlns="urn:aah:remtp:schemas:PlaceOrderResponse:1.00">
            <StatusCode>0</StatusCode>
            <TextReply>Successful</TextReply>
            <PlaceOrderReplyMessage>
                <TransmissionId>aac1e254-bc05-4d69-b04d-31d5fead314e</TransmissionId>
                <ReplyOrder>
                    <TrackingId>aac1e254-bc05-4d69-b04d-31d5fead314e</TrackingId>
                    <CustomerAccount>A_TEST</CustomerAccount>
                    <CustomerOrder>aac1e254-bc05-4d69-b04d-31d5fead314e</CustomerOrder>
                    <ReplyGroup>
                        <LineNumber>1</LineNumber>
                        <ReplyItem>
                            <ReplyCode>0</ReplyCode>
                            <ReplyData>10</ReplyData>
                            <ReplyMsg>Successful</ReplyMsg>
                        </ReplyItem>
                    </ReplyGroup>
                </ReplyOrder>
            </PlaceOrderReplyMessage>
        </PlaceOrderResponse>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>';

;WITH XMLNAMESPACES('http://schemas.xmlsoap.org/soap/envelope/' AS [SOAP-ENV],'urn:aah:remtp:schemas:PlaceOrderResponse:1.00' AS ns2)
SELECT @StatusCode = c.value('(ns2:StatusCode/text())[1]','INT'),@TextReply = c.value('(ns2:TextReply/text())[1]','VARCHAR(100)'),@CustomerOrder = c.value('(ns2:PlaceOrderReplyMessage/ns2:ReplyOrder/ns2:CustomerOrder/text())[1]','VARCHAR(100)') 
FROM @XmlDocument.nodes('/SOAP-ENV:Envelope/SOAP-ENV:Body/ns2:PlaceOrderResponse') AS t(c);

-- test
SELECT @StatusCode AS StatusCode,@TextReply AS TextReply,@CustomerOrder AS CustomerOrder;

输出

+------------+------------+--------------------------------------+
| StatusCode | TextReply  |            CustomerOrder             |
+------------+------------+--------------------------------------+
|          0 | Successful | aac1e254-bc05-4d69-b04d-31d5fead314e |
+------------+------------+--------------------------------------+

SQL＃2

;WITH XMLNAMESPACES('http://schemas.xmlsoap.org/soap/envelope/' AS [SOAP-ENV],DEFAULT 'urn:aah:remtp:schemas:PlaceOrderResponse:1.00')
--INSERT INTO @ResponseLines(LineNumber,ReplyCode,ReplyData,ReplyMessage)
SELECT c.value('(LineNumber/text())[1]',c.value('(ReplyItem/ReplyCode/text())[1]',c.value('(ReplyItem/ReplyData/text())[1]',c.value('(ReplyItem/ReplyMsg/text())[1]','VARCHAR(100)') 
FROM @XmlDocument.nodes('/SOAP-ENV:Envelope/SOAP-ENV:Body/PlaceOrderResponse/PlaceOrderReplyMessage/ReplyOrder/ReplyGroup') AS t(c);