close()上的java Apache POI运行时异常
我在使用ApachePOI阅读一些内容时遇到问题。docx内容,并将结果显示为未格式化预览。我使用的是POI版本3.11
代码:
private static String POI2Text(File file) {
POITextExtractor extractor = null;
try {
extractor = ExtractorFactory.createExtractor(file);
return extractor.getText();
} catch (Exception ex) {
logger.warn("Error:", ex);
} finally {
if (extractor!=null) try { extractor.close(); } catch (Exception ex) { logger.warn("Error:", ex); }
}
return "";
}
在finally块(extractor.close())中引发以下异常:
org.apache.poi.openxml4j.exceptions.OpenXML4JRuntimeException: Fail to save: an error occurs while > saving the package : part
at org.apache.poi.openxml4j.opc.ZipPackage.saveImpl(ZipPackage.java:503) ~[agent.jar:na]
at org.apache.poi.openxml4j.opc.OPCPackage.save(OPCPackage.java:1425) ~[agent.jar:na]
at org.apache.poi.openxml4j.opc.OPCPackage.save(OPCPackage.java:1412) ~[agent.jar:na]
at org.apache.poi.openxml4j.opc.ZipPackage.closeImpl(ZipPackage.java:353) ~[agent.jar:na]
at org.apache.poi.openxml4j.opc.OPCPackage.close(OPCPackage.java:425) ~[agent.jar:na]
at org.apache.poi.POIXMLTextExtractor.close(POIXMLTextExtractor.java:87) ~[agent.jar:na]
....
Caused by: java.lang.IllegalArgumentException: part
at org.apache.poi.openxml4j.opc.OPCPackage.addPackagePart(OPCPackage.java:873) ~[agent.jar:na]
at org.apache.poi.openxml4j.opc.ZipPackage.saveImpl(ZipPackage.java:448) ~[agent.jar:na]
... 15 common frames omitted
有没有办法防止这种异常?最大的问题是,poi不会在抛出异常后释放文件句柄。我需要能够在我的应用程序之外移动或编辑文件
# 1 楼答案
只是一个快速反馈:我可以通过以只读方式打开inputstream,然后使用POITextExtractor使用该流提取数据来解决这个问题