Can't get proper encoding for JExcel/jxl - java

I have a problem of character encoding while using JExcel.
My app creates an excel document from a template and fills it with with data from a database (filled with current and previous sessions user-input) before sending it to the user.
In the final document, non-ASCII characters FROM THE TEMPLATE such as é, è, à, or ° are not rendered properly (in the generated document, they appear properly in the template) and are instead replaced by � while those from the database are properly encoded.
I use UTF-8 for user input (and output to the viewing layer) as well as database storage.
I use this code in the class that generates the file:
private void createFile(Arguments...)
throws IOException, BiffException, RowsExceededException, WriteException
{
File XLSFile = new File(MyPath);
WorkbookSettings XLSSettings = new WorkbookSettings()
XLSSettings.setEncoding(Constants.TEMPLATE_ENCODING)
// Constants.java is a class containing only app-wide constants declared as public static final
Workbook template = Workbook.getWorkbook(
new File(Constants.TEMPLATE_PATH));
WritableWorkbook userDocument =
Workbook.createWorkBook(XLSFile,template,XLSSettings);
template.close();
WritableSheet sheet = userDocument.getSheet(0);
...
Code that fills my workbook and sheet by creating new Labels and
adding them to my WritableSheet with sheet.add(Label)
...
userDocument.write();
userDocument.close();
}
Constants.TEMPLATE_ENCODING has been set to "Cp1252" as was suggested in this question: Encoding problem in JExcel but to no avail however.
Trying to change it to "UTF-8" produced no visible change either.
The application works otherwise just fine at every level.
I figured it might be a problem of setting the proper encoding when opening and copying the template and tried to change this line
Workbook template = Workbook.getWorkbook(new File(Constants.TEMPLATE_PATH);
to
Workbook template = Workbook.getWorkbook(new File(Constants.TEMPLATE_PATH, XLSSettings);
but it produces an ArrayOutOfBoundException in java.lang.System.arraycopy propagating from this line userDocument.write(); via
java.lang.ArrayIndexOutOfBoundsException
java.lang.System.arraycopy(Native Method)
jxl.biff.StringHelper.getBytes(StringHelper.java:127)
jxl.write.biff.WriteAccessRecord.<init>(WriteAccessRecord.java:59)
jxl.write.biff.WritableWorkbookImpl.write(WritableWorkbookImpl.java:726)
com.mypackage.MyClass.createFile(MyClass.java:337)
Anyone ever encountered the problem and know how to fix it ?

I was facing this problem too. The solution, for me, was very easy. I just had to put my WorkbookSettings just in the TEMPLATE wb and not in the new file.
//Load template workbook with settings
WorkbookSettings ws = new WorkbookSettings();
ws.setEncoding("Cp1252");
Workbook templateWorkbook = Workbook.getWorkbook(this.context.getAssets().open("template.xls"), ws);
//Create new workbook from templateWorkbook without settings
this.workbook = Workbook.createWorkbook(new File(this.location), templateWorkbook);
Found at: Android and JXL : ArrayIndexOutOfBoundException when create WritableWorkbook
Regards

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enter image description here
Its seem you have some value in excel which are not text. Please check excel value like in image, and if and special quotes are available then remove that and try again.

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