https://my.oschina.net/viakiba/blog/750787
package com.kakaluote.excel;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.util.StringUtils;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
@Slf4j
public class PoiTest07 {
public static void main(String[] args) throws Exception {
String path = "E:\\微信下载文件\\WeChat Files\\T-mac_01_\\FileStorage\\File\\2019-05\\账户交易明细表1.xls";
File file = new File(path);
System.out.println(file.getName());
FileInputStream inputStream = new FileInputStream(file);
Workbook wb = getWorkbook(inputStream,file.getName());
Iterator<Sheet> sheetIterator = wb.sheetIterator();
while(sheetIterator.hasNext()){
Sheet sheet = sheetIterator.next();
int numberOfRows = sheet.getPhysicalNumberOfRows();
for (int i = 0; i < numberOfRows; i++) {
Row row = sheet.getRow(i);
int physicalNumberOfCells = row.getPhysicalNumberOfCells();
for (int j = 0; j < physicalNumberOfCells; j++) {
Cell cell = row.getCell(j);
System.out.print(cell.getStringCellValue() + " ");
}
System.out.println("");
}
}
}
/**
* 得到Workbook
*/
public static Workbook getWorkbook(InputStream inputStream,String fileName){
Workbook workbook = null;
try {
if (StringUtils.endsWithIgnoreCase(fileName,".xls")){
POIFSFileSystem pfs = new POIFSFileSystem(inputStream); // 解析2003版本
workbook = new HSSFWorkbook(pfs,true);
}else if (StringUtils.endsWithIgnoreCase(fileName,".xlsx")){
workbook = new XSSFWorkbook(inputStream); // 解析2007版本
}
} catch (IOException e) {
e.printStackTrace();
}
return workbook;
}
}