類型不匹配：無法從XSSFSheet轉換為HSSFSheet

Question

我正在嘗試使用以下代碼從excel文件中讀取：

    File file = new File("/C:/behzad-data/trp.small.xlsx");
    String dataPath=file.getAbsolutePath();
    System.out.println(dataPath);
    POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(file));

    //XSSFWorkbook wb = new XSSFWorkbook(file);

    HSSFWorkbook wb = new HSSFWorkbook(fs);
    HSSFSheet sheet = wb.getSheetAt(0);
    HSSFRow row;
    HSSFCell cell;

但它抱怨：

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)
    at org.apache.poi.poifs.storage.HeaderBlock.<init>(HeaderBlock.java:152)

所以我已經看到了 ，並使它像

XSSFWorkbook wb = new XSSFWorkbook(file);
 //   HSSFWorkbook wb = new HSSFWorkbook(fs);

但它抱怨：

Type mismatch: cannot convert from XSSFSheet to HSSFSheet

如何同時解決兩個錯誤？

Answer 1

為什么不使用WorkbookFactory ，而對於兩種類型的工作簿都只需要處理一個API？ 因此，有了這個新的API，您不必使用文件類型來預先指定Sheet ， Row等，只需使用此類即可。

File file = new File("C:\\behzad-data\\trp.small.xlsx");
Workbook wb = WorkbookFactory.create(file);

Sheet sheet = wb.getSheetAt(0);
Iterator<Row> rows = sheet.rowIterator();
while (rows.hasNext()) {
    Row row = rows.next();
    // so on and so forth
}

然后像往常一樣使用wb

在此處查看API文檔以獲取更多信息

注意：這些依賴關系是工作所需的

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>3.16-beta2</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>3.16-beta2</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml-schemas</artifactId>
    <version>3.16-beta2</version>
</dependency>