Groovy将XML NodeChildren转换为byte[]

Question

我正在尝试解析来自soap webservice的XML响应，如下所示

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <SignResult xmlns="http://www.tw.com/tsswitch">
      <Result>
        <Code>string</Code>
        <Desc>string</Desc>
      </Result>
      <SignedDocument>base64Binary</SignedDocument>
      <Archive>base64Binary</Archive>
      <Details>string</Details>
    </SignResult>
  </soap:Body>
</soap:Envelope>

下面是我将XML响应转换为所需变量的groovy代码

def responseXML =  EntityUtils.toString(httpResponse.getEntity());

def signResponse = new XmlSlurper().parseText(responseXML)
def signedDocument = new XmlSlurper().parseText(responseXML).Body.SignResult.SignedDocument 
def resultCode = new XmlSlurper().parseText(responseXML).Body.SignResult.Result.Code 
def resultDesc = new XmlSlurper().parseText(responseXML).Body.SignResult.Result.Desc
def archive = new XmlSlurper().parseText(responseXML).Body.SignResult.Archive
def details = new XmlSlurper().parseText(responseXML).Body.SignResult.Details

我正在尝试将signedDocument转换为byte[]，如下所示

def document = signedDocument as byte[]

但是我得到了下面的异常

org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object with class 'groovy.util.slurpersupport.NodeChildren' to class 'byte'

有人能帮我解决这个问题吗？

Answer 1

因此，要将节点转换回字符串，然后获取字符串的字节数，您可以这样做：

import groovy.xml.*

// Ignore namespaces, as otherwise we'll get tag0 namespaces added when we serialise
def signedDocument = new XmlSlurper(false, false).parseText(responseXML).'soap:Body'.SignResult.SignedDocument

// Convert to a string, then get the bytes in UTF-8
byte[] signedDocumentBytes = new StreamingMarkupBuilder()
    .bindNode(signedDocument)
    .toString()
    .getBytes('UTF-8')