我想读取一个大小为50Mb的excel,并通过poi在java中包含各种表格,但问题是当我尝试创建对象时,我在下面发布的堆栈跟踪的例外情况。对于出存储器空间错误的我已经配置此用Apache POI打开电子表格时内存不足
-Xmx1024m -Duser.timezone=GMT0 already
下面
是其中我试图读取的excel拳头,然后将其convrting成字节数组稍后将它作为bytr流,其中i检测它的快照扩展,它是的.xlsx类型的,因此momnet我尝试创造我得到了下面的异常请告知如何从这个
String fileName = "C:\\abc\\xret.xlsx";
FileInputStream fis = new FileInputStream(fileName);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] bFile = new byte[(int) fileName.length()];
byte[] buf = new byte[1024];
try {
for (int readNum; (readNum = fis.read(buf)) != -1;) {
bos.write(buf, 0, readNum);
}
} catch (IOException ex) {
ex.printStackTrace();
}
byte[] bytes = bos.toByteArray();
processExcelObjects(bytes);
后来下面我正在进一步创建对象如下图所示
克服对象 byteArrayInputStream = new ByteArrayInputStream(bytes);
if (byteArrayInputStream.available() != -1)
{
if (filename.lastIndexOf("."))).equalsIgnoreCase(".xlsx"))
{
XSSFWorkbook workbookXlsx = new XSSFWorkbook();
//**** got the exception ********//
workbookXlsx = new XSSFWorkbook(byteArrayInputStream); // ****** on this line I got the exception *********//
}
,我在创建上述workbookXlsx对象
org.apache.poi.POIXMLException: java.lang.reflect.InvocationTargetException
at org.apache.poi.xssf.usermodel.XSSFFactory.createDocumentPart(XSSFFactory.java:62)
Caused by: java.lang.OutOfMemoryError: Java heap space
at org.apache.xmlbeans.impl.store.Cur$CurLoadContext.attr(Cur.java:3039)
at org.apache.xmlbeans.impl.store.Cur$CurLoadContext.attr(Cur.java:3060)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
请指教是POI内部异常或堆空间一个
可能不是一个答案,但肯定是一个很好的开始[OutOfMemoryError:Java堆空间](http://stackoverflow.com/questions/37335/how-to-deal-with-java-lang-outofmemoryerror-java -heap-space-error-64mb-heap?rq = 1) – Prudhvi
内存不足。 – bmargulies
我正在运行此参数-Xmx1024m -Duser.timezone = GMT0已经 –