如何从Liferay Portlet读取Excel文件？

Question

I am developing an application based on Liferay, inside the " processAction " method I am calling a function from my class which is supposed to read an Excel file, but when I put this portlet on liferay it gives me errors such as:

" org.apache.poi.POIXMLException: java.lang.reflect.invocationtargetexception in java "

Answer 1

Even i had got this problem and please provide full stacktrace.

In your Exception stacktrace check for

Caused by: java.lang.OutOfMemoryError: Java heap space at 
java.util.Arrays.copyOfRange(Arrays.java:2694)

this is because JVM doesnt have enough memory try increasing JVM memory.

The other problem many be your using old xmlbeans.jar file try using the latest

Answer 2

I was missing the stax API jar

If we look at the POI Components page we will see that the ooxml-schemas jar depends on a STAX API jar (most typically provided by stax-api-1.0.1.jar)

I Looked in my POI binary download, and in the ooxml-lib directory to see the jar I needed.