java 读取excel表

技术:apache.poi

maven依赖如下:

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

源代码:

public static List getExcel() throws FileNotFoundException, IOException {
        File excelFile = new File("E:\\officeproject\\qysc\\test.xls");
        HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream(excelFile));
        HSSFSheet sheet = wb.getSheetAt(0);
        List<List<String>> listAll = new ArrayList<List<String>>();
        for (Row row : sheet) {
            List<String> list = new ArrayList<String>();
            for (Cell cell : row) {
                switch (cell.getCellType()) {
                    case Cell.CELL_TYPE_STRING://字符串
                        String  categoryName = cell.getRichStringCellValue().getString();
                        list.add(categoryName);
                        System.out.print(" ");
                        break;
                    case Cell.CELL_TYPE_NUMERIC://数值与日期
                        String axis = Double.toString(cell.getNumericCellValue());
                        list.add(axis);
                        System.out.print(" ");
                        break;
                    default:
                }
            }
            listAll.add(list);
            System.out.println();
        }
        System.out.println(listAll);
        System.out.println(listAll.size());
        return listAll;
    }

遇到的问题:

Exception in thread "main" org.apache.poi.poifs.filesystem.OfficeXmlFileException: The supplied data appears to be in the Office 2007+ XML. You are calling the part of POI that deals with OLE2 Office Documents. You need to call a different part of POI to process this data (eg XSSF instead of HSSF)

解决:关于excel不同版本读取有对应的工具类,上述例子是对于后缀为 .xls 的excel表格。要是表格不多,就打开excel换一下后缀名就ok了

使用excel打开表格,文件- 另存为:

后缀选择:

保存即可

 

补充2:关于手机的,在导入时,获取了cell后,axis =Double.toString(cell.getNumericCellValue());这样来读取value时。例如手机号是:13111112222,读取到的可能就是1.3111112222E10,解决措施:

参考:https://blog.csdn.net/maxu12345/article/details/47977811

DecimalFormat df = new DecimalFormat("#");
String axis = df.format(cell.getNumericCellValue());

 

补充3:关于百分数:2.5%

String axis = Double.toString(cell.getNumericCellValue());
NumberFormat nf = NumberFormat.getPercentInstance();
nf.setMaximumFractionDigits(1);//这个1的意识是保存结果到小数点后几位,但是特别声明:这个结果已经先*100了。
String telNum = df.format(cell.getNumericCellValue());

 

关于不同excel版本文件读取,请参考:https://blog.csdn.net/it_wangxiangpan/article/details/42778167  (未测试,概不负责)

posted @ 2019-07-15 17:10  进阶仙女  阅读(2720)  评论(0编辑  收藏  举报