我跟踪了，在PdfView中数据已经组织好，但在PdfViewResolver中，导出时就报错，不知道是什么问题。
- org.apache.fop.apps.FOPException: null:1:5879 A table row must be child of fo:table-body, fo:table-header or fo:table-footer, not fo:table-row
at org.apache.fop.fo.flow.TableRow.<init>(TableRow.java:184)
at org.apache.fop.fo.flow.TableRow$Maker.make(TableRow.java:69)
at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:352)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.fop.apps.Driver.render(Driver.java:498)
at org.apache.fop.apps.Driver.run(Driver.java:565)
at com.dingtian.common.extable.view.PdfViewResolver.resolveView(PdfViewResolver.java:81)

已经解决，原来有重复的列