Apache POI Parsing error

I know this question has been asked often, but couldn’t find a suitable solution. When working with

XWPFDocument xdoc = new XWPFDocument(srcFile);

XSSFWorkbook workbook = new XSSFWorkbook(srcFile);

I always end up with the following error:

Exception in thread "main" java.lang.IllegalAccessError: tried to access method org.apache.poi.util.POILogger.log(ILjava/lang/Object;)V from class org.apache.poi.openxml4j.opc.PackageRelationshipCollection
    at org.apache.poi.openxml4j.opc.PackageRelationshipCollection.parseRelationshipsPart(PackageRelationshipCollection.java:313)
    at org.apache.poi.openxml4j.opc.PackageRelationshipCollection.<init>(PackageRelationshipCollection.java:163)
    at org.apache.poi.openxml4j.opc.PackageRelationshipCollection.<init>(PackageRelationshipCollection.java:131)
    at org.apache.poi.openxml4j.opc.PackagePart.loadRelationships(PackagePart.java:561)
    at org.apache.poi.openxml4j.opc.PackagePart.<init>(PackagePart.java:109)
    at org.apache.poi.openxml4j.opc.PackagePart.<init>(PackagePart.java:80)
    at org.apache.poi.openxml4j.opc.PackagePart.<init>(PackagePart.java:125)
    at org.apache.poi.openxml4j.opc.ZipPackagePart.<init>(ZipPackagePart.java:78)
    at org.apache.poi.openxml4j.opc.ZipPackage.getPartsImpl(ZipPackage.java:243)
    at org.apache.poi.openxml4j.opc.OPCPackage.getParts(OPCPackage.java:684)
    at org.apache.poi.openxml4j.opc.OPCPackage.open(OPCPackage.java:275)
    at org.apache.poi.util.PackageHelper.open(PackageHelper.java:37)
    at org.apache.poi.xssf.usermodel.XSSFWorkbook.<init>(XSSFWorkbook.java:266)

People have suggested to open PackageRelationshipCollection and retry. But that didn’t help much.

Also I have the jars loaded :

<dependency>
   <groupId>org.apache.poi</groupId>
   <artifactId>poi</artifactId>
   <version>3.13</version>
   <type>jar</type>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-scratchpad</artifactId>
    <version>3.13</version>
    <type>jar</type>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>3.12</version>
    <type>jar</type>
</dependency>
 <dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml-schemas</artifactId>
    <version>3.11</version>
    <type>jar</type>
</dependency>

Answer

From the Apache POI FAQ:

Can I mix POI jars from different versions?

No. This is not supported.

All POI jars in use must come from the same version. A combination such as poi-3.11.jar and poi-ooxml-3.9.jar is not supported, and will fail to work in unpredictable ways.

Your pom has dependencies on Apache POI jars from 3.11, 3.12 and 3.13, which as the FAQ explained isn’t supported

You need to change all of those to be 3.13, then it’ll work

I’d suggest something like:

<properties>
  <poi.version>3.13</poi.version>
</properties>
<dependencies>
  <dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>${poi.version}</version>
  </dependency>
  <dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-scratchpad</artifactId>
    <version>${poi.version}</version>
  </dependency>
  <dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>${poi.version}</version>
  </dependency>
  <!-- etc as needed -->

That way, you can ensure all your POI jars are from the same version!

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Answer