This is how you try to get a format
CreationHelper creationHelper = workbook.getCreationHelper();
//If this format is one of the default formats, will return the format index
else will create a new format and return its index.
short formatIndex =
creationHelper.createDataFormat().getFormat(format);
CellStyle cellStyle = workbook.createCellStyle();
cellStyle.setDataFormat(formatIndex);
Cell someCell.setCellStyle(cellStyle);
Not sure why the cell is of formula type. You should refer to the Open XML
format reference to understand how to include text in a number format. Refer to
section 3.8.30 in the Spreadsheet Markup Reference [1]
-Rk
[1] http://www.ecma-international.org/publications/standards/Ecma-376.htm (
Download Part 4 which contains the complete OOXML reference )
-----Original Message-----
From: Siva_Masilamani [mailto:saachins...@yahoo.co.in]
Sent: Tuesday, June 15, 2010 10:52 PM
To: user@poi.apache.org
Subject: Read Custom format cell value
Hi
I am using apache poi api to read data from the excel file and having
problem with particular data format.
One of the coumns in the excel file had formula type whose value will be in
the below format
"2001-160101100-22110-0000-000"
Note : the no of digits between each dash and the number of dash itself may
vary but the format will always be numbers followed by - and end with
numbers.
The api successfully find the field type as formula and consider it as
numeric type but it throws NumberFormatException as it contains -.
I am using DataFormat class to read all the numeric cell value as we need to
read the data as it is (no round up or truncate) in the cell value.
I was going through the genral format available in the api but could not
understand how to add custom format to the list of available formats.
I was trying to use DataFormat.addFormat(String,Format) from the api but did
not understand what to pass in the String argument and how to define the
Format for this custom format.
Your help is appreciated.
public String getCellValue(Cell cell) {
String retVal;
if (cell == null) {
return "";
}
switch (cell.getCellType()) {
case Cell.CELL_TYPE_BLANK:
retVal = "";
break;
case Cell.CELL_TYPE_BOOLEAN:
retVal = "" + cell.getBooleanCellValue();
break;
case Cell.CELL_TYPE_STRING:
retVal = cell.getStringCellValue();
System.out.print(retVal + " ");
break;
case Cell.CELL_TYPE_NUMERIC:
retVal = isNumberOrDate(cell);
System.out.print(retVal + " ");
break;
case Cell.CELL_TYPE_FORMULA:
retVal = isNumberOrDate(cell);
System.out.print(retVal + " ");
break;
default:
retVal = "";
}
return retVal;
}
private String isNumberOrDate(Cell cell) {
String retVal;
if (HSSFDateUtil.isCellDateFormatted(cell)) {
DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
retVal = formatter.format(cell.getDateCellValue());
} else {
DataFormatter df = new DataFormatter();
//This is where i am trying to add the custom format to the list
to already available formats.
//DecimalFormat def=new DecimalFormat("#-#");
//df.addFormat("", def);
retVal = df.formatCellValue(cell);
}
return retVal;
}
public String getCellValue(Cell cell) {
String retVal;
if (cell == null) {
return "";
}
switch (cell.getCellType()) {
case Cell.CELL_TYPE_BLANK:
retVal = "";
break;
case Cell.CELL_TYPE_BOOLEAN:
retVal = "" + cell.getBooleanCellValue();
break;
case Cell.CELL_TYPE_STRING:
retVal = cell.getStringCellValue();
System.out.print(retVal + " ");
break;
case Cell.CELL_TYPE_NUMERIC:
retVal = isNumberOrDate(cell);
System.out.print(retVal + " ");
break;
case Cell.CELL_TYPE_FORMULA:
retVal = isNumberOrDate(cell);
System.out.print(retVal + " ");
break;
default:
retVal = "";
}
return retVal;
}
private String isNumberOrDate(Cell cell) {
String retVal;
if (HSSFDateUtil.isCellDateFormatted(cell)) {
DateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
retVal = formatter.format(cell.getDateCellValue());
} else {
DataFormatter df = new DataFormatter();
//This is where i am trying to add the custom format to the list
to already available formats.
//DecimalFormat def=new DecimalFormat("#-#");
//df.addFormat("", def);
retVal = df.formatCellValue(cell);
}
return retVal;
}
java.lang.NumberFormatException: For input string:
"2001-160101100-22110-0000-000"
at
java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
at java.lang.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1207)
at java.lang.Double.parseDouble(Double.java:220)
at
org.apache.poi.xssf.usermodel.XSSFCell.getNumericCellValue(XSSFCell.java:197)
at
org.apache.poi.ss.usermodel.DateUtil.isCellDateFormatted(DateUtil.java:278)
at com.excel.reader.ExcelDataReader.isNumberOrDate(ExcelDataReader.java:166)
at com.excel.reader.ExcelDataReader.getCellValue(ExcelDataReader.java:154)
at com.excel.reader.ExcelDataReader.process(ExcelDataReader.java:118)
at com.excel.reader.ExcelDataReader.main(ExcelDataReader.java:249)
Exception in thread "main" ACBS 2001 7528080 Java Result: 1
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