How do I get the dependency for POI API?

Question

I wish to use POI api to read excel files. I get the dependency for POI api from Maven

<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>4.1.0</version>
</dependency>

How do I know what else needs to be included in the POM.xml to clear all the dependencies?

Answer 1

Looking into Apache POI components map

my expectation is that you need to use poi-ooxml library, Maven transitive dependencies feature will get all underlying dependencies automatically so you basically need only this one:

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>4.1.0</version>
</dependency>

An example code to read the file would be something like:

OPCPackage pkg = OPCPackage.open(new File("/path/to/your/file.xlsx"));
XSSFWorkbook wb = new XSSFWorkbook(pkg);
XSSFSheet sheet = wb.getSheetAt(0);
XSSFRow row = sheet.getRow(0);
XSSFCell cell = row.getCell(0);
System.out.println(cell.getStringCellValue());
pkg.close();

References:

• Busy Developers' Guide to HSSF and XSSF Features
• Running Data Driven Tests
• How to use the HSSF API