使用Apache POI解析excel

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1.使用Apache POI解析excel，包括.xls和.xlsx

• Apache POI 针对Workbook有两种不同实现方式，分别是HSSFWorkbook（解析.xls文件）和XSSFWorkbook(解析.xlsx文件)

2.Maven依赖：

<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
<dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>3.17</version>
</dependency><!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
<dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>3.17</version>
</dependency>

3.写一份既可以解析.xls又可以解析.xlsx文件的代码

public class Leo_Test
{public static void main(String[] args) throws IOException, EncryptedDocumentException, InvalidFormatException{FileInputStream fis = new FileInputStream(new File("C:\\Leo_Test_EntitlementModel.xls"));Workbook workbook = WorkbookFactory.create(fis);for(int i=0;i<workbook.getNumberOfSheets();i++){Sheet sheet = workbook.getSheetAt(i);Iterator<Row> rowIterator  = sheet.iterator();while(rowIterator.hasNext()){Row row = rowIterator.next();Iterator<Cell> cellIterator  = row.iterator();while(cellIterator .hasNext()){Cell cell = cellIterator.next();DataFormatter dataFormatter = new DataFormatter();String cellValue = dataFormatter.formatCellValue(cell);System.out.println(cellValue);}}}}
}

4.结果

5.参考文档：

• https://www.callicoder.com/java-read-excel-file-apache-poi/
• https://howtodoinjava.com/apache-commons/readingwriting-excel-files-in-java-poi-tutorial/

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