我已经尝试过搜索并发现了类似的问题，但似乎无法实现这一目标。我需要从网站中作为POST变量发送的XML中提取一些数据。在以下XML中，我需要提取变量名称SCHOOLDFE的响应，但无法找到方法。先谢谢你们！
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<quizReport xsi:schemaLocation=\"http://www.ispringsolutions.com/ispring/quizbuilder/quizresults quizReport.xsd\" version=\"1\" xmlns=\"http://www.ispringsolutions.com/ispring/quizbuilder/quizresults\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">
<quizSettings quizType=\"graded\" maxScore=\"10\" maxNormalizedScore=\"100\" timeLimit=\"0\">
<passingPercent>0.8</passingPercent>
</quizSettings>
<summary score=\"0\" percent=\"0\" time=\"1\">
<variables>
<variable name=\"USER_NAME\" title=\"Name\" value=\"JOHN\"/>
<variable name=\"CLASS\" title=\"Class\" value=\"6M\"/>
<variable name=\"SCHOOLDFE\" title=\"School DFE\" value=\"2112377\"/>
</variables>
</summary>
<questions>
<sequenceQuestion id=\"{7B5A5595-5F1E-415B-BA8C-8C700372FC4F}\" status=\"incorrect\" maxPoints=\"10\" maxAttempts=\"1\" awardedPoints=\"0\" usedAttempts=\"1\">
<direction>Arrange the following items in the correct order</direction>
<answers>
<answer userDefinedPosition=\"1\">Item 1</answer>
<answer userDefinedPosition=\"0\">Item 2</answer>
<answer userDefinedPosition=\"2\">Item 3</answer>
<answer userDefinedPosition=\"3\">Item 4</answer>
</answers>
</sequenceQuestion>
</questions>
</quizReport>