我有一个应用程序读取 .xlsx 文件并向用户显示内容。该应用程序在 Windows 环境下运行良好。
我在 ubuntu 服务器上的 tomcat6 上部署了此 Web 应用程序的 .war 文件。我还将 .xlsx 文件复制到服务器上。
代码中的文件路径是正确的。
但线
FileInputStream file = new FileInputStream(new File(FileName));
XSSFWorkbook workbook = new XSSFWorkbook(file);
给出一个错误
java.lang.reflect.InvocationTargetException
org.apache.poi.POIXMLException: java.lang.reflect.InvocationTargetException
org.apache.poi.xssf.usermodel.XSSFFactory.createDocumentPart(XSSFFactory.java:62)
org.apache.poi.POIXMLDocumentPart.read(POIXMLDocumentPart.java:403)
org.apache.poi.POIXMLDocument.load(POIXMLDocument.java:155)
org.apache.poi.xssf.usermodel.XSSFWorkbook.<init>(XSSFWorkbook.java:207)
com.qm.action.GetProjectNames.execute(GetProjectNames.java:107)
我已检查变量 FileName 是否包含服务器上文件的正确路径和文件名（/usr/local/Metrics/MetricFiles/FY2013_Q2_GIT_Review_Metrics_by_LSS-GC.xlsx）
由于 ubuntu 服务器是虚拟机，因此我使用 WinSCP 复制了 .xlsx 文件。文件的大小也是正确的。
为什么在linux平台上会出现这个错误？
添加附加异常跟踪
Caused by: java.lang.reflect.InvocationTargetException at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at
java.lang.reflect.Constructor.newInstance(Constructor.java:525) at
org.apache.poi.xssf.usermodel.XSSFFactory.createDocumentPart(XSSFFactory.java:60) ... 68 more
Caused by: java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOfRange(Arrays.java:2694) at java.lang.String.<init>(String.java:203) at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseCdataLiteral(PiccoloLexer.java:3027) at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseQuotedTagValue(PiccoloLexer.java:2936) at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseAttributesNS(PiccoloLexer.java:1754) at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseOpenTagNS(PiccoloLexer.java:1521) at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.parseTagNS(PiccoloLexer.java:1362) at
org.apache.xmlbeans.impl.piccolo.xml.PiccoloLexer.yylex(PiccoloLexer.java:4678) at
org.apache.xmlbeans.impl.piccolo.xml.Piccolo.yylex(Piccolo.java:1290) at
org.apache.xmlbeans.impl.piccolo.xml.Piccolo.yyparse(Piccolo.java:1400) at
org.apache.xmlbeans.impl.piccolo.xml.Piccolo.parse(Piccolo.java:714) at
org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3439) at
org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1270) at
org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1257) at
org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderBase.java:345) at
org.openxmlformats.schemas.spreadsheetml.x2006.main.StyleSheetDocument$Factory.parse(Unknown Source) at
org.apache.poi.xssf.model.StylesTable.readFrom(StylesTable.java:121) at
org.apache.poi.xssf.model.StylesTable.<init>(StylesTable.java:92) at
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at
java.lang.reflect.Constructor.newInstance(Constructor.java:525) at
org.apache.poi.xssf.usermodel.XSSFFactory.createDocumentPart(XSSFFactory.java:60) at
org.apache.poi.POIXMLDocumentPart.read(POIXMLDocumentPart.java:403) at
org.apache.poi.POIXMLDocument.load(POIXMLDocument.java:155) at
org.apache.poi.xssf.usermodel.XSSFWorkbook.<init>(XSSFWorkbook.java:207) at
com.qm.action.GetProjectNames.execute(GetProjectNames.java:107) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at
java.lang.reflect.Method.invoke(Method.java:601) at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452)
正在将评论升级为答案...
堆栈跟踪的关键部分解释了损坏的原因及其原因，它是：
Caused by: java.lang.OutOfMemoryError: Java heap space at
java.util.Arrays.copyOfRange(Arrays.java:2694)
这告诉我们 Java 没有分配足够的内存来存储处理文件所需的所有数据
如果您需要增加 JVM 堆大小的帮助，我建议您查看上一个问题 https://stackoverflow.com/questions/1565388/increase-heap-size-in-java or this one https://stackoverflow.com/questions/2294268/how-can-i-increase-the-jvm-memory，两者都会引导您完成这一切。
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