MIDRANGE dot COM Mailing List Archive



Home » JAVA400-L » October 2005

Re: HSSF error when reading an existing Excel spreadsheet



fixed

Rich,

You need to make sure the CLASSPATH environment variable is set to include 
the jar file you uploaded...for examle, if you put the jar file in say 
"/QIBM/UserData/Java400/ext/" folder, you should do the following to add 
it to your classpath:

WRKENVVAR -> Enter

if there is a CLASSPATH already specified, just modify it and append the 
full path to the jar file in it...Otherwise, take an option 1 and type 
CLASSPATH (all caps) and hit F4 to prompt it...then, in the Initial Value, 
type the following:

.:/QIBM/UserData/Java400/ext/poi-jar-name.jar

this should set you up to compile it correctly...also, you may want to 
create a simple CL program to set up your classpath upon signon...

hope this helps

Shane




"Rich Dotson" <rich_dotson@xxxxxxxxxxx> 
Sent by: java400-l-bounces+shane_cessna=nal.com@xxxxxxxxxxxx
10/10/2005 05:31 PM
Please respond to
Java Programming on and around the iSeries / AS400 
<java400-l@xxxxxxxxxxxx>


To
java400-l@xxxxxxxxxxxx
cc

Subject
Re: HSSF error when reading an existing Excel spreadsheet






Thanks for the reply Shane,

I copied the java program to the IFS where the POI is, did the CHGCURDIR 
but 
when I tried to compile it I got the following messages:

  $
>javac /excel/XLWorkBook.java
  /excel/XLWorkBook.java:2: package org.apache.poi.poifs.filesystem does 
not 
ex
  ist
  import org.apache.poi.poifs.filesystem.POIFSFileSystem;
                                                     ^
  /excel/XLWorkBook.java:3: package org.apache.poi.hssf.usermodel does not 

exis
  t
  import org.apache.poi.hssf.usermodel.HSSFWorkbook;
                                                      ^
  /excel/XLWorkBook.java:5: cannot resolve symbol
  symbol  : class HSSFWorkbook
  location: class XLWorkBook
     static public HSSFWorkbook loadWB(String fileName) {
                  ^
/excel/XLWorkBook.java:6: cannot resolve symbol
symbol  : class POIFSFileSystem
location: class XLWorkBook
       POIFSFileSystem fs = null;
       ^
/excel/XLWorkBook.java:7: cannot resolve symbol
symbol  : class HSSFWorkbook
location: class XLWorkBook
       HSSFWorkbook wb = null;
       ^
/excel/XLWorkBook.java:11: cannot resolve symbol
symbol  : class POIFSFileSystem
location: class XLWorkBook
          fs = new POIFSFileSystem(infile);
                   ^
/excel/XLWorkBook.java:12: cannot resolve symbol
symbol  : class HSSFWorkbook
location: class XLWorkBook
          wb = new HSSFWorkbook(fs);
                   ^
7 errors

Any ideas?   Just started reading a book on Java for RPG programmers so 
I'm 
new to this stuff but it doesn't look like it is finding the POI .jar 
file.


----Original Message Follows----
From: Shane_Cessna@xxxxxxx
Reply-To: Java Programming on and around the iSeries / 
AS400<java400-l@xxxxxxxxxxxx>
To: Java Programming on and around the iSeries / AS400 
<java400-l@xxxxxxxxxxxx>
Subject: Re: HSSF error when reading an existing Excel spreadsheet
Date: Mon, 10 Oct 2005 07:59:29 -0500

Rich,

I was having the same problem a while back but was able to work my way
around it (thanks to David Hinselwood for the code)...

XLWorkBook.java

import java.io.*;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
public class XLWorkBook {
    static public HSSFWorkbook loadWB(String fileName) {
       POIFSFileSystem fs = null;
       HSSFWorkbook wb = null;
       FileInputStream infile = null;
       try {
          infile = new FileInputStream(fileName);
          fs = new POIFSFileSystem(infile);
          wb = new HSSFWorkbook(fs);
          infile.close();
       }
       catch (IOException e) {
          e.printStackTrace();
       }
       finally {
          if (infile != null) {
             try {
                infile.close();
             }
             catch (IOException e) {
                e.printStackTrace();
             }
          }
       }
    return wb;
  }
}

place this java program in the same IFS folder as the Jakarta POI jar
files...change your current directory on the iSeries using CHGCURDIR
DIR('/QIBM/UserData/Java400/ext/')...or wherever your POI files are...then
compile the java program using STRQSH...in there, execute the following
command...javac /QIBM/UserData/Java400/ext/XLWorkBook.java...this will
create your class for use in your RPGLE programs...

then, in your RPGLE program:

d openXL          pr              o   extproc(*JAVA
d                                     :'XLWorkBook'
d                                     :'loadWB')
d                                     CLASS(*JAVA:
d                                     'org.apache.poi.hssf.usermodel-
d                                     .HSSFWorkbook')
d                                     static
d  fileName                           like(jString)
...
d fileName        s                   like(jString)
...
fileName = new_String('/home/scessna/excel/May05DailyLaborHours.xls');
book = openXL(fileName);

hope this helps...

Shane



"Rich Dotson" <rich_dotson@xxxxxxxxxxx>
Sent by: java400-l-bounces@xxxxxxxxxxxx
10/09/2005 04:57 PM
Please respond to
Java Programming on and around the iSeries / AS400
<java400-l@xxxxxxxxxxxx>


To
java400-l@xxxxxxxxxxxx
cc

Subject
HSSF error when reading an existing Excel spreadsheet






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

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE!

http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/

--
This is the RPG programming on the AS400 / iSeries (RPG400-L) mailing list
To post a message email: RPG400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/rpg400-l
or email: RPG400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/rpg400-l.

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE!

http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/

--
This is the Java Programming on and around the iSeries / AS400 (JAVA400-L)
mailing list
To post a message email: JAVA400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/java400-l
or email: JAVA400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/java400-l.


--
This is the Java Programming on and around the iSeries / AS400 (JAVA400-L) 

mailing list
To post a message email: JAVA400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/java400-l
or email: JAVA400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/java400-l.

_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE! 

http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/






Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2014 by MIDRANGE dot COM and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available here. If you have questions about this, please contact