Question

我正在使用POI从excel文件中提取数据。（Excel工作表中的第5列包含我的文件系统中存在的文件的名称）我循环遍历表的行（使用POI提取单元格的内容），并为每行创建Tika实例，并在文件为Office文档时解析第5列中使用Tika“parseToString（file）”命名的文件（excel，ppt，word）我收到此错误：

Exception in thread "AWT-EventQueue-0" java.lang.NoSuchFieldError: filesystem
    at org.apache.poi.hwpf.HWPFDocument.<init>(HWPFDocument.java:185)
    at org.apache.poi.hwpf.HWPFDocument.<init>(HWPFDocument.java:131)
    at org.apache.tika.parser.microsoft.WordExtractor.parse(WordExtractor.java:61)
    at org.apache.tika.parser.microsoft.OfficeParser.parse(OfficeParser.java:182)
    at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:197)
    at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:197)
    at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:135)
    at org.apache.tika.Tika.parseToString(Tika.java:357)
    at org.apache.tika.Tika.parseToString(Tika.java:423)
    at org.apache.tika.Tika.parseToString(Tika.java:403)
    at HP.BuildMailExcelDoc.getTextFromTika(BuildMailExcelDoc.java:355)
    at HP.BuildMailExcelDoc.addExcelDoc(BuildMailExcelDoc.java:314)
    at HP.BuildMailExcelDoc.buildDoc(BuildMailExcelDoc.java:196)
    at HP.BuildMailExcelDoc.buildMailDoc(BuildMailExcelDoc.java:102)
    at HP.BuildMailExcelDoc.indexDirectory(BuildMailExcelDoc.java:69)
    at HP.BuildMailExcelDoc.indexDirectory(BuildMailExcelDoc.java:78)
    at HP.BuildMailExcelDoc.buildDoc(BuildMailExcelDoc.java:63)
    at HP.IndexGUI$1.mouseClicked(IndexGUI.java:281)
    at java.awt.AWTEventMulticaster.mouseClicked(Unknown Source)
    at java.awt.Component.processMouseEvent(Unknown Source)
    at javax.swing.JComponent.processMouseEvent(Unknown Source)
    at java.awt.Component.processEvent(Unknown Source)
    at java.awt.Container.processEvent(Unknown Source)
    at java.awt.Component.dispatchEventImpl(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
    at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
    at java.awt.Container.dispatchEventImpl(Unknown Source)
    at java.awt.Window.dispatchEventImpl(Unknown Source)
    at java.awt.Component.dispatchEvent(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
    at java.awt.EventDispatchThread.run(Unknown Source)

我认为此问题是由POI中的嵌套使用导致的。一次在excel表中，然后再次在Tika解析调用中。

听起来合理吗？我该如何处理这个问题？

谢谢:-) Reuth

Answer 1

您的类路径上看起来有两个POI副本。我猜你有Tika提供的新版本以及旧版本。问题是Java正在你的类路径上找到第一个版本，这是旧版本。

您的解决方案是从类路径中删除旧版本。有关如何识别旧副本的来源，请参阅this POI FAQ Entry

Tika parseToString调用问题

1 个答案: