JAVA 解析excel文件 poi方式

package *.utils;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.util.ArrayList;

import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.xssf.usermodel.XSSFCell;

import org.apache.poi.xssf.usermodel.XSSFRow;

import org.apache.poi.xssf.usermodel.XSSFSheet;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

* @author poke

* @created 2017-11-25

*/

public class ReadBusinessDataExcel {

public static final String OFFICE_EXCEL_2003_POSTFIX = "xls";

public static final String OFFICE_EXCEL_2010_POSTFIX = "xlsx";

public static final String EMPTY = "";

public static final String POINT = ".";

public static final String NOT_EXCEL_FILE = " : Not the Excel file!";

public static final String PROCESSING = "Processing...";

private static final Logger LOG = LoggerFactory.getLogger(ReadBusinessDataExcel.class);

public static void main(String args[]) throws IOException{

new ReadBusinessDataExcel().readExcel("e:/1.xlsx");

}

/**

* read the Excel file

* @param path the path of the Excel file

* @return

* @throws IOException

*/

public List<BusinessData> readExcel(String path) throws IOException {

if (path == null || EMPTY.equals(path)) {

return null;

} else {

String postfix = getPostfix(path);

if (!EMPTY.equals(postfix)) {

if (OFFICE_EXCEL_2003_POSTFIX.equals(postfix)) {

return readXls(path);

} else if (OFFICE_EXCEL_2010_POSTFIX.equals(postfix)) {

return readXlsx(path);

}

} else {

System.out.println(path + NOT_EXCEL_FILE);

}

}

return null;

}

/**

* Read the Excel 2010

* @param path the path of the excel file

* @return

* @throws IOException

*/

public List<BusinessData> readXlsx(String path) throws IOException {

System.out.println(PROCESSING + path);

InputStream is = new FileInputStream(path);

XSSFWorkbook xssfWorkbook = new XSSFWorkbook(is);

BusinessData BusinessData = null;

List<BusinessData> list = new ArrayList<BusinessData>();

// Read the Sheet

for (int numSheet = 0; numSheet < xssfWorkbook.getNumberOfSheets(); numSheet++) {

XSSFSheet xssfSheet = xssfWorkbook.getSheetAt(numSheet);

if (xssfSheet == null) {

continue;

}

// Read the Row start at the 2nd

for (int rowNum = 1; rowNum <= xssfSheet.getLastRowNum(); rowNum++) {

try{

XSSFRow xssfRow = xssfSheet.getRow(rowNum);

if (xssfRow != null) {

BusinessData = new BusinessData();

XSSFCell no = xssfRow.getCell(0);

XSSFCell name = xssfRow.getCell(1);

XSSFCell age = xssfRow.getCell(2);

XSSFCell score = xssfRow.getCell(3);

System.out.print(no);

System.out.print(" ");

System.out.print(name);

System.out.print(" ");

System.out.print(age);

System.out.print(" ");

System.out.print(score);

System.out.println("");

list.add(BusinessData);

}

}catch(Exception e){

LOG.error("处理业务数据");

throw new ShellPlatformException(ErrorCode.FILE_UPLOAD_ERROR, e);

}

}

}

return list;

}

/**

* Read the Excel 2003-2007

* @param path the path of the Excel

* @return

* @throws IOException

*/

public List<BusinessData> readXls(String path) throws IOException {

System.out.println(PROCESSING + path);

InputStream is = new FileInputStream(path);

HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);

BusinessData BusinessData = null;

List<BusinessData> list = new ArrayList<BusinessData>();

// Read the Sheet

for (int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++) {

HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);

if (hssfSheet == null) {

continue;

}

// Read the Row start at the 2nd

for (int rowNum = 1; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {

HSSFRow hssfRow = hssfSheet.getRow(rowNum);

if (hssfRow != null) {

BusinessData = new BusinessData();

HSSFCell no = hssfRow.getCell(0);

HSSFCell name = hssfRow.getCell(1);

HSSFCell age = hssfRow.getCell(2);

HSSFCell score = hssfRow.getCell(3);

System.out.print(no);

System.out.print(" ");

System.out.print(name);

System.out.print(" ");

System.out.print(age);

System.out.print(" ");

System.out.print(score);

System.out.println("");

list.add(BusinessData);

}

}

}

return list;

}

@SuppressWarnings("static-access")

private String getValue(XSSFCell xssfRow) {

if (xssfRow.getCellType() == xssfRow.CELL_TYPE_BOOLEAN) {

return String.valueOf(xssfRow.getBooleanCellValue());

} else if (xssfRow.getCellType() == xssfRow.CELL_TYPE_NUMERIC) {

return String.valueOf(xssfRow.getNumericCellValue());

} else {

return String.valueOf(xssfRow.getStringCellValue());

}

}

@SuppressWarnings("static-access")

private String getValue(HSSFCell hssfCell) {

if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {

return String.valueOf(hssfCell.getBooleanCellValue());

} else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {

return String.valueOf(hssfCell.getNumericCellValue());

} else {

return String.valueOf(hssfCell.getStringCellValue());

}

}

/**

* get postfix of the path

* @param path

* @return

*/

public String getPostfix(String path) {

if (path == null || EMPTY.equals(path.trim())) {

return EMPTY;

}

if (path.contains(POINT)) {

return path.substring(path.lastIndexOf(POINT) + 1, path.length());

}

return EMPTY;

}

}

<!-- poi excel解析 -->

<dependency>

<groupId>org.apache.poi</groupId>

<artifactId>poi</artifactId>

<version>3.14</version>

</dependency>