使用debugtol启动后，EasyExcel headmap空指针问题 #240
Description
描述bug内容
请清晰简洁地描述错误内容
如题，getHeadMap实际有数据，但是最终headMap变量的值还为null，正常启动没问题
版本信息
- DebugTools版本: [e.g. 4.2.0] 4.5.3
- bug中间件的版本: [e.g. MyBatisPlus: 3.4.3] easyexcel 3.1.1
日志信息
堆栈内容
java.lang.NullPointerException: Cannot invoke "java.util.Map.entrySet()" because "headMap" is null
at com.alibaba.excel.read.listener.ModelBuildEventListener.buildUserModel(ModelBuildEventListener.java:95)
at com.alibaba.excel.read.listener.ModelBuildEventListener.invoke(ModelBuildEventListener.java:41)
at com.alibaba.excel.read.listener.ModelBuildEventListener.invoke(ModelBuildEventListener.java:26)
at com.alibaba.excel.read.processor.DefaultAnalysisEventProcessor.dealData(DefaultAnalysisEventProcessor.java:99)
at com.alibaba.excel.read.processor.DefaultAnalysisEventProcessor.endRow(DefaultAnalysisEventProcessor.java:46)
at com.alibaba.excel.analysis.v07.handlers.RowTagHandler.endElement(RowTagHandler.java:66)
at com.alibaba.excel.analysis.v07.handlers.sax.XlsxRowHandler.endElement(XlsxRowHandler.java:91)
at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:618)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(XMLDocumentFragmentScannerImpl.java:1728)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2899)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:605)
at java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:542)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:889)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:825)
at java.xml/com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at java.xml/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1224)
at java.xml/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:637)
at com.alibaba.excel.analysis.v07.XlsxSaxAnalyser.parseXmlSource(XlsxSaxAnalyser.java:239)
at com.alibaba.excel.analysis.v07.XlsxSaxAnalyser.execute(XlsxSaxAnalyser.java:260)
at com.alibaba.excel.analysis.ExcelAnalyserImpl.analysis(ExcelAnalyserImpl.java:124)
at com.alibaba.excel.ExcelReader.read(ExcelReader.java:63)如何复现
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复现demo文件