DataWeave 2.0如何将xml转成单行？

Question

我需要帮助将输入 XML 转换为单行 XML 输出，即没有空格、没有换行符和没有制表符。

即一行显示后面的数据。你能帮帮我吗？

以下示例 XML 将作为输入：

<tns:ResponseMessage xmlns:n1="urn:sap-com:document:sap:rfc:functions" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">

 <tns:Header>
   <tns:Verb>reply</tns:Verb>
   <tns:Noun>Compressed</tns:Noun>
   <tns:User/>

   <Signature xmlns="">
     <SignedInfo>
       <CanonicalizationMethod Algorithm=""/>
       <SignatureMethod Algorithm=""/>
     </SignedInfo>

     <SignatureValue>XW8UqTTcR==</SignatureValue>

     <KeyInfo>
       <X509Data>
         <X509IssuerSerial>
           <X509IssuerName></X509IssuerName>
           <X509SerialNumber>1448033456</X509SerialNumber>
         </X509IssuerSerial>
         <X509SubjectName></X509SubjectName>
         <X509Certificate>MIIF8z</X509Certificate>
       </X509Data>
     </KeyInfo>
   </Signature>
 </tns:Header>

 <tns:Reply>
   <tns:Result>OK</tns:Result>
   <tns:ID idAuthority="" idType="" kind="" objectType=""/>
   <tns:operationId>0</tns:operationId>
 </tns:Reply>

 <tns:Payload>
   <tns:OperationSet>
     <tns:enforceMsgSequence>false</tns:enforceMsgSequence>
   </tns:OperationSet>
   <tns:Compressed>QlpoORdyRThQkAA=</tns:Compressed>
 </tns:Payload>
</tns:ResponseMessage>

预期输出如下：

{body:<tns:ResponseMessage xmlns:n1="urn:sap-com:document:sap:rfc:functions" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"><tns:Header><tns:Verb>reply</tns:Verb><tns:Noun>Compressed</tns:Noun><tns:User/><Signature xmlns=""><SignedInfo><CanonicalizationMethod Algorithm=""/><SignatureMethod Algorithm=""/></SignedInfo><SignatureValue>XW8UqTTcR==</SignatureValue><KeyInfo><X509Data><X509IssuerSerial><X509IssuerName></X509IssuerName><X509SerialNumber>1448033456</X509SerialNumber></X509IssuerSerial><X509SubjectName></X509SubjectName><X509Certificate>MIIF8z</X509Certificate></X509Data></KeyInfo></Signature></tns:Header><tns:Reply><tns:Result>OK</tns:Result><tns:ID idAuthority="" idType="" kind="" objectType=""/><tns:operationId>0</tns:operationId></tns:Reply><tns:Payload><tns:OperationSet><tns:enforceMsgSequence>false</tns:enforceMsgSequence></tns:OperationSet><tns:Compressed>QlpoORdyRThQkAA=</tns:Compressed></tns:Payload></tns:ResponseMessage>}

我正在寻找的转换是在 DataWeave 2.0 for Mule 4.

Answer 1

您可以使用 XML 格式的

indent=false

写入属性删除输入 XML 的缩进，但这不会删除新行。为此，您可以将 XML 转换为字符串，然后进行字符替换。请注意，无论有无这些字符，XML 都同样有效。

%dw 2.0
output application/java
---
write(payload,"application/xml",{indent:false}) replace "\n" with ""