使用poi解析Excel文件转化数组形式的集合(List

1.pom.xml引入jar包

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.17</version>
        </dependency>

2.解析代码

    /**
     * 解析Excel文件转化数组形式的集合
     * @param in
     * @return
     */
    public static List<String []> excelToList(InputStream in) {
        List<String[]> strings = new ArrayList<>();
        Workbook workbook = null;
        // 当前读取行数-0-based
        int currentRowNum = 0;
        try {
            workbook = WorkbookFactory.create(in);
            Sheet sheet = workbook.getSheetAt(0);
            logger.info("sheet name:" + sheet.getSheetName() + ",last rownum:" + sheet.getLastRowNum());
            for (int x = 0; x <= sheet.getLastRowNum(); x++) {
                Row row = sheet.getRow(x);
                currentRowNum = row.getRowNum();
                StringBuffer sb = new StringBuffer();
                //设置单元格类型
                for (int i=0; i< row.getLastCellNum();i++){
                    if(row.getCell(i) != null){
                        row.getCell(i).setCellType(CellType.STRING);
                    }
                    String s = PoiUtils.getStringCellValue(row.getCell(i));
                    sb.append(s);
                    sb.append(",");
                }
                strings.add(sb.toString().substring(0, sb.toString().lastIndexOf(",")).split(","));
            }
        }catch (Exception e){
            logger.error("数据读取到第"+currentRowNum+"行时失败");
            e.printStackTrace();
        }finally {
            try {
                if (null != workbook) {
                    workbook.close();
                }
            } catch (Exception e2) {
            }
            try {
                if (null != in) {
                    in.close();
                }
            } catch (Exception e2) {
            }
        }
        return strings;
    }