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Update ToCSV example to print out file-names in error messages

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1877817 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Dominik Stadler 2020-05-16 13:06:15 +00:00
parent 3cad9e6851
commit eb497bac79
1 changed files with 9 additions and 11 deletions
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20
src/examples/src/org/apache/poi/ss/examples/ToCSV.java
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@ -274,26 +274,23 @@ public class ToCSV {
String separator, int formattingConvention)
throws FileNotFoundException, IOException,
IllegalArgumentException {
File source = new File(strSource);
File destination = new File(strDestination);
File[] filesList;
String destinationFilename;
// Check that the source file/folder exists.
File source = new File(strSource);
if(!source.exists()) {
throw new IllegalArgumentException("The source for the Excel " +
"file(s) cannot be found.");
"file(s) cannot be found at " + source);
}
// Ensure thaat the folder the user has chosen to save the CSV files
// away into firstly exists and secondly is a folder rather than, for
// instance, a data file.
File destination = new File(strDestination);
if(!destination.exists()) {
throw new IllegalArgumentException("The folder/directory for the " +
throw new IllegalArgumentException("The destination directory " + destination + " for the " +
"converted CSV file(s) does not exist.");
}
if(!destination.isDirectory()) {
throw new IllegalArgumentException("The destination for the CSV " +
throw new IllegalArgumentException("The destination " + destination + " for the CSV " +
"file(s) is not a directory/folder.");
}
@ -302,7 +299,8 @@ public class ToCSV {
if(formattingConvention != ToCSV.EXCEL_STYLE_ESCAPING &&
formattingConvention != ToCSV.UNIX_STYLE_ESCAPING) {
throw new IllegalArgumentException("The value passed to the " +
"formattingConvention parameter is out of range.");
"formattingConvention parameter is out of range: " + formattingConvention + ", expecting one of " +
ToCSV.EXCEL_STYLE_ESCAPING + " or " + ToCSV.UNIX_STYLE_ESCAPING);
}
// Copy the spearator character and formatting convention into local
@ -312,6 +310,7 @@ public class ToCSV {
// Check to see if the sourceFolder variable holds a reference to
// a file or a folder full of files.
final File[] filesList;
if(source.isDirectory()) {
// Get a list of all of the Excel spreadsheet files (workbooks) in
// the source folder/directory
@ -345,7 +344,7 @@ public class ToCSV {
// Build the name of the csv folder from that of the Excel workbook.
// Simply replace the .xls or .xlsx file extension with .csv
destinationFilename = excelFile.getName();
String destinationFilename = excelFile.getName();
destinationFilename = destinationFilename.substring(
0, destinationFilename.lastIndexOf('.')) +
ToCSV.CSV_FILE_EXTENSION;
@ -403,7 +402,6 @@ public class ToCSV {
// any rows.
sheet = this.workbook.getSheetAt(i);
if(sheet.getPhysicalNumberOfRows() > 0) {
// Note down the index number of the bottom-most row and
// then iterate through all of the rows on the sheet starting
// from the very first row - number 1 - even if it is missing.