org.apache.poi.poifs.filesystem.OfficeXmlFileException: The supplied data appears to be in the Offic

Posted 2020-11-10 shadow

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)

原因是：
HSSFWorkbook:是操作Excel2003以前（包括2003）的版本，扩展名是.xls 
XSSFWorkbook:是操作Excel2007的版本，扩展名是.xlsx

<!--处理2003 excel-->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.16</version>
        </dependency>
        <!--处理2007 excel-->
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.16</version>
        </dependency>

在使用POI读取Excel文件内容时，发生了异常，报错如下：

java.lang.IllegalStateException: Cannot get a STRING value from a NUMERIC cell  异常怎么办?

大概意思是不能从一个数值的列获取一个字符串类型的值，我使用下面的代码来获取单元格的值：

解决

解决方法是在读取某单元格时，使用setCellType()方法先将该单元格的类型设置为STRING，代码如下：

 cell.setCellType(CellType.STRING);
                String stringCellValue = cell.getStringCellValue();

 

poi创建excel 和读取excel  (2003版本)

创建

import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.junit.Test;

import java.io.FileOutputStream;
import java.io.IOException;

public class ordingTest {

    @Test
    public void createOrding() throws IOException {
        HSSFWorkbook work = new HSSFWorkbook();
        HSSFSheet mysheet = work.createSheet("mysheet");
        HSSFRow row = mysheet.createRow(0);
        HSSFRow row2 = mysheet.createRow(1);
        HSSFRow row3 = mysheet.createRow(2);

        row.createCell(0).setCellValue("name");
        row.createCell(1).setCellValue("age");
        row.createCell(2).setCellValue("adress");

        row2.createCell(0).setCellValue("张三");
        row2.createCell(1).setCellValue(13);
        row2.createCell(2).setCellValue("上海");


        row3.createCell(0).setCellValue("李四");
        row3.createCell(1).setCellValue(16);
        row3.createCell(2).setCellValue("北京");

        FileOutputStream fileOutputStream = new FileOutputStream("E:\hello.xls");
        work.write(fileOutputStream);
        fileOutputStream.flush();
        work.close();
        fileOutputStream.close();
    }

}

 

读取:

import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.Row;
import org.junit.Test;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

public class ordingTest2 {
    @Test
    public void reading() throws IOException {
        InputStream inputStream = new FileInputStream("E:\hello.xls") {
        };
        HSSFWorkbook sheets = new HSSFWorkbook(inputStream);

        HSSFSheet sheetAt = sheets.getSheetAt(0);

        for (Row cells : sheetAt) {
            for (Cell cell : cells) {
                cell.setCellType(CellType.STRING);
                String stringCellValue = cell.getStringCellValue();
                System.out.println("stringCellValue = " + stringCellValue);
            }

        }
        sheets.close();
    }
}

第二中读取方法:

/*从最后一行读取,起始索引0*/
        int lastRowNum = sheetAt.getLastRowNum();
        for (int i = 0; i <=lastRowNum ; i++) {
            HSSFRow row = sheetAt.getRow(i);
            short lastCellNum = row.getLastCellNum();
            for (int j = 0; j < lastCellNum; j++) {
                HSSFCell cell = row.getCell(j);
                cell.setCellType(CellType.STRING);
                String stringCellValue = cell.getStringCellValue();
                System.out.println("stringCellValue = " + stringCellValue);
            }
        }