如何解决如何修复 XML 解析错误：引用未声明的命名空间前缀：'Matrix'
我正在尝试读取 XML 文件
我写了这个脚本，但出现错误：
DECLARE @XML AS XML,@hDoc AS INT,@sql NVARCHAR (MAX),@rootxmlns varchar(1000)
SELECT @XML=CONVERT(XML,BulkColumn)
FROM OPENROWSET(BULK 'F:\__Files\Done\Output\20201223133856\2027.txt.xmi',SINGLE_BLOB) AS x;
SET @rootxmlns = '<root xmlns:soap="http://www.omg.org/XMI"/>'
EXEC sp_xml_preparedocument @hDoc OUTPUT,@XML,@rootxmlns
SELECT *
FROM OPENXML(@hDoc,'Matrix:Customer')
我检查了很多链接，他们都建议使用 xmlns 我尝试了很多，但它们都没有出现相同的错误
XML 解析错误：引用未声明的命名空间前缀： “客户”。
这是我的 XMI
<?xml version="1.0" encoding="UTF-8"?>
<xmi:XMI xmlns:xmi="http://www.omg.org/XMI"
xmlns:util="http:///org/apache/ctakes/typesystem/type/util.ecore"
xmlns:tcas="http:///uima/tcas.ecore"
xmlns:cas="http:///uima/cas.ecore"
xmlns:type10="http:///org/cleartk/Syntax/constituent/type.ecore"
xmlns:ne="http:///org/cleartk/type/ne.ecore"
xmlns:textsem="http:///org/apache/ctakes/typesystem/type/textsem.ecore"
xmlns:types2="http:///org/apache/ctakes/assertion/zoner/types.ecore"
xmlns:type6="http:///org/apache/ctakes/smokingstatus/i2b2/type.ecore"
xmlns:refsem="http:///org/apache/ctakes/typesystem/type/refsem.ecore"
xmlns:type11="http:///org/cleartk/Syntax/dependency/type.ecore"
xmlns:type="http:///de/tudarmstadt/ukp/dkpro/core/api/Metadata/type.ecore"
xmlns:type14="http:///org/cleartk/util/type.ecore"
xmlns:assertion="http:///org/apache/ctakes/typesystem/type/temporary/assertion.ecore"
xmlns:type8="http:///org/cleartk/score/type.ecore"
xmlns:Syntax="http:///org/apache/ctakes/typesystem/type/Syntax.ecore"
xmlns:type9="http:///org/cleartk/srl/type.ecore"
xmlns:type2="http:///org/apache/ctakes/constituency/parser/uima/type.ecore"
xmlns:types="http:///org/apache/ctakes/assertion/medfacts/types.ecore"
xmlns:type7="http:///org/apache/ctakes/smokingstatus/type.ecore"
xmlns:relation="http:///org/apache/ctakes/typesystem/type/relation.ecore"
xmlns:type12="http:///org/cleartk/timeml/type.ecore"
xmlns:type5="http:///org/apache/ctakes/sideeffect/type.ecore"
xmlns:type15="http:///org/cleartk/ne/type.ecore"
xmlns:type13="http:///org/cleartk/token/type.ecore"
xmlns:structured="http:///org/apache/ctakes/typesystem/type/structured.ecore"
xmlns:textspan="http:///org/apache/ctakes/typesystem/type/textspan.ecore"
xmlns:libsvm="http:///org/apache/ctakes/smokingstatus/type/libsvm.ecore"
xmlns:type3="http:///org/apache/ctakes/coreference/type.ecore"
xmlns:type4="http:///org/apache/ctakes/drugner/type.ecore"
xmi:version="2.0">
<cas:NULL xmi:id="0"/>
<tcas:DocumentAnnotation xmi:id="8"
sofa="1"
begin="0"
end="16975"
language="x-unspecified"/>
<structured:DocumentID xmi:id="13"
documentID="1"/>
<structured:DocumentIdPrefix xmi:id="15"
documentIdPrefix=""/>
<structured:Metadata xmi:id="17"
patientIdentifier="1"
patientID="0"
sourceData="23"/>
<structured:DocumentPath xmi:id="35"
documentPath="D:\__Files\Input\1\1.txt"/>
<Matrix:Segment xmi:id="37"
sofa="1"
begin="0"
end="16975"
id="SIMPLE_SEGMENT"
preferredText="SIMPLE_SEGMENT"/>
<Matrix:Customer xmi:id="44"
sofa="1"
begin="0"
end="15"
Matrix:CustomerNumber="0"/>
<Matrix:Customer xmi:id="50"
sofa="1"
begin="17"
end="33"
Matrix:CustomerNumber="1"/>
<Matrix:Customer xmi:id="56"
sofa="1"
begin="47"
end="62"
Matrix:CustomerNumber="2"/>
<Matrix:Customer xmi:id="62"
sofa="1"
begin="65"
end="80"
Matrix:CustomerNumber="3"/>
解决方法
我不得不通过添加一个虚假的命名空间来修复输入 XML。最好使用 XQuery 原生方法：.nodes() 和 .value()，并远离 Microsoft 专有的 OPENXML() 及其配套 API。
检查一下。
XML
<?xml version="1.0" encoding="UTF-8"?>
<xmi:XMI xmlns:xmi="http://www.omg.org/XMI"
xmlns:util="http:///org/apache/ctakes/typesystem/type/util.ecore"
xmlns:tcas="http:///uima/tcas.ecore" xmlns:cas="http:///uima/cas.ecore"
xmlns:type10="http:///org/cleartk/syntax/constituent/type.ecore"
xmlns:ne="http:///org/cleartk/type/ne.ecore"
xmlns:textsem="http:///org/apache/ctakes/typesystem/type/textsem.ecore"
xmlns:types2="http:///org/apache/ctakes/assertion/zoner/types.ecore"
xmlns:type6="http:///org/apache/ctakes/smokingstatus/i2b2/type.ecore"
xmlns:refsem="http:///org/apache/ctakes/typesystem/type/refsem.ecore"
xmlns:type11="http:///org/cleartk/syntax/dependency/type.ecore"
xmlns:type="http:///de/tudarmstadt/ukp/dkpro/core/api/metadata/type.ecore"
xmlns:type14="http:///org/cleartk/util/type.ecore"
xmlns:assertion="http:///org/apache/ctakes/typesystem/type/temporary/assertion.ecore"
xmlns:type8="http:///org/cleartk/score/type.ecore"
xmlns:syntax="http:///org/apache/ctakes/typesystem/type/syntax.ecore"
xmlns:type9="http:///org/cleartk/srl/type.ecore"
xmlns:type2="http:///org/apache/ctakes/constituency/parser/uima/type.ecore"
xmlns:types="http:///org/apache/ctakes/assertion/medfacts/types.ecore"
xmlns:type7="http:///org/apache/ctakes/smokingstatus/type.ecore"
xmlns:relation="http:///org/apache/ctakes/typesystem/type/relation.ecore"
xmlns:type12="http:///org/cleartk/timeml/type.ecore"
xmlns:type5="http:///org/apache/ctakes/sideeffect/type.ecore"
xmlns:type15="http:///org/cleartk/ne/type.ecore"
xmlns:type13="http:///org/cleartk/token/type.ecore"
xmlns:structured="http:///org/apache/ctakes/typesystem/type/structured.ecore"
xmlns:textspan="http:///org/apache/ctakes/typesystem/type/textspan.ecore"
xmlns:libsvm="http:///org/apache/ctakes/smokingstatus/type/libsvm.ecore"
xmlns:type3="http:///org/apache/ctakes/coreference/type.ecore"
xmlns:type4="http:///org/apache/ctakes/drugner/type.ecore"
xmlns:Matrix="http://someURL"
xmi:version="2.0">
<cas:NULL xmi:id="0"/>
<tcas:DocumentAnnotation xmi:id="8" sofa="1" begin="0" end="16975"
language="x-unspecified"/>
<structured:DocumentID xmi:id="13" documentID="1"/>
<structured:DocumentIdPrefix xmi:id="15" documentIdPrefix=""/>
<structured:Metadata xmi:id="17" patientIdentifier="1" patientID="0"
sourceData="23"/>
<structured:DocumentPath xmi:id="35" documentPath="D:\__Files\Input\1\1.txt"/>
<Matrix:Segment xmi:id="37" sofa="1" begin="0" end="16975"
id="SIMPLE_SEGMENT" preferredText="SIMPLE_SEGMENT"/>
<Matrix:Customer xmi:id="44" sofa="1" begin="0" end="15"
Matrix:CustomerNumber="0"/>
<Matrix:Customer xmi:id="50" sofa="1" begin="17" end="33"
Matrix:CustomerNumber="1"/>
<Matrix:Customer xmi:id="56" sofa="1" begin="47" end="62"
Matrix:CustomerNumber="2"/>
<Matrix:Customer xmi:id="62" sofa="1" begin="65" end="80"
Matrix:CustomerNumber="3"/>
</xmi:XMI>
SQL
;WITH XMLNAMESPACES ('http://www.omg.org/XMI' AS xmi,'http://someURL' AS Matrix),rs (xmldata) AS
(
SELECT CONVERT (XML,BulkColumn)
FROM OPENROWSET (BULK N'e:\Temp\2027.xml',SINGLE_BLOB) AS XmlData
)
SELECT c.value('@xmi:id','INT') AS xml_id,c.value('@sofa','INT') AS sofa,c.value('@begin','INT') AS [begin],c.value('@end','INT') AS [end],c.value('@Matrix:CustomerNumber','INT') AS CustomerNumber
FROM rs
CROSS APPLY xmldata.nodes('/xmi:XMI/Matrix:Customer') AS t(c);
输出
+--------+------+-------+-----+----------------+
| xml_id | sofa | begin | end | CustomerNumber |
+--------+------+-------+-----+----------------+
| 44 | 1 | 0 | 15 | 0 |
| 50 | 1 | 17 | 33 | 1 |
| 56 | 1 | 47 | 62 | 2 |
| 62 | 1 | 65 | 80 | 3 |
+--------+------+-------+-----+----------------+
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