HSSF error when reading an existing Excel spreadsheet

["Rich Dotson" <rich_dotson@xxxxxxxxxxx>]

I've been working with the HSSF4 Java POI procedures that I downloaded from 
the links
previously listed on this mail list.  I was able to get an RPG program to 
write out
to a new Excel spreadsheet but I am having a problem getting a program to 
read from
an existing Excel spreadsheet.

I've included the error message, section of code in the HSSF4 service 
program where
the error is occuring and the entire RPG program that I am calling.   This 
program
is a version of the UPDDEMO RPG program that was part of the code in the
www.iseriesnetwork.com/noderesources/code/clubtechcode/ExcelCrtDemo.zip 
examples.

Does anyone know why I am receiving the following error?  The error is 
occuring on
the following line in the RPG program:

book = hssf_open('/excel/BBNExpress.xls');

Thanks!


Here's the detailed message that I am receiving:

Message ID . . . . . . :   RNX0301       Severity . . . . . . . :   50

Message . . . . :   Java exception received when calling Java method.
Cause . . . . . :   RPG procedure HSSF_OPEN in program CBSCUSTM/HSSFR4
 received Java exception "java.lang.UnsatisfiedLinkError:" when calling
 method "<ini" with signature "" in class
 "org.apache.poi.hssf.usermodel.HSSFWorkbook".


Below is the section of the HSSFR4 service program where the error occurred.
The error occurred on line 1266 / 126500.

Program:   HSSFR4         Library:   CBSCUSTM       Module:   HSSFR4
 1262     126100  /free
 1263     126200     wwStr   = new_String(peFilename);
 1264     126300     wwFile  = new_FileInputStream(wwStr);
 1265     126400     wwPOIFS = new_POIFSFileSystem(wwFile);
 1266     126500     wwBook  = new_HSSFWorkbookFromPOIFS(wwPOIFS); <--- 
Error
 1267     126600
 1268     126700     closeFile(wwFile);


Here is the entire RPG program.  The HSSFR4 service program is part of the
OSBBNDDIR binding directory.


H DFTACTGRP(*NO)
H OPTION(*SRCSTMT: *NODEBUGIO: *NOSHOWCPY)
H THREAD(*SERIALIZE)
H BNDDIR('OSBBNDDIR' : 'QC2LE')

/copy qOSBCPYSRC,hssf_h

D book            s                   like(HSSFWorkbook)
D sheet           s                   like(HSSFSheet)
D row             s                   like(HSSFRow)
D cell            s                   like(HSSFCell)
D TempStr         s                   like(jString)
D StrVal          s             52A   varying
D NumVal          s              8F
D type            s             10I 0

D String_getBytes...
D                 pr          1024A   varying
D                                     extproc(*JAVA:
D                                     'java.lang.String':
D                                     'getBytes')

* Put environment variable
D PutEnv          pr            10i 0 ExtProc('putenv')
D  EnvVar                         *   value options(*string)

D rc              s             10i 0
/free

 // set CLASSPATH environment
 rc = putenv('CLASSPATH=/excel/POI-2.0.jar');

 hssf_begin_object_group(100);

 // Load the BBN Express Spreadsheet into memory
 book = hssf_open('/excel/BBNExpress.xls');   <--- Error

 // Get the cell
 sheet = hssf_getSheet(book: 'Sept 20');
 row   = HSSFSheet_getRow(sheet: 2);
 cell = HSSFRow_GetCell(row: 2);
 type = HSSFCell_getCellType(cell);
 StrVal = 'Cell B2 = ';

  select;
  when type = CELL_TYPE_STRING;
     StrVal +=
       String_getBytes(HSSFCell_getStringCellValue(cell));
  when type = CELL_TYPE_FORMULA;
     StrVal += String_getBytes(HSSFCell_getCellFormula(cell));
  when type = CELL_TYPE_NUMERIC;
     NumVal = HSSFCell_getNumericCellValue(cell);
     StrVal += %char(%dech(NumVal:15:2));
  endsl;

  dsply StrVal;

  hssf_save(book: '/excel/BBNExpress.xls');
  hssf_end_object_group();

  *inlr = *on;

/end-free

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