从出现错误的 excel 文件中读取数据

Question

I am reading excel file and storing it in Map for further use. Using below code, which is working perfect. But for some files, which shows below error when opened

Code:

private Workbook workbook;
    public Map<String,String> readMaster(Properties properties) {
    Map<String,String> masterMap = new HashMap<String, String>();
     try {
            File masterFile = new File(properties.get(ReportConstants.DCS_INPUT_PATH) + ReportConstants.DCS_MASTER_FILE);
            if(!masterFile.exists()){
                throw new FileNotFoundException();
            }else{
            FileInputStream excelFile = new FileInputStream(masterFile);
            workbook = new XSSFWorkbook(excelFile);
            Sheet datatypeSheet = workbook.getSheetAt(0);
            Iterator<Row> iterator = datatypeSheet.iterator();
            int headItr = 0;
            while (iterator.hasNext()) {
                String key="",value="";
                Row currentRow = iterator.next();
                Iterator<Cell> cellIterator = currentRow.iterator();
                int rowItr = 0;
                while (cellIterator.hasNext()) {
                    Cell cell = cellIterator.next();
                    //Some logic
}
masterMap.put(key, value);
                    }
                }

             for (Map.Entry<String,String> entry : masterMap.entrySet()){  
                    System.out.println("Key = " + entry.getKey() + 
                                     ", Value = " + entry.getValue()); 
            } 
            if(!masterMap.isEmpty()){
                /*FileUtility.checkDestinationDir(""+properties.get(ReportConstants.DCS_ARCHIVE_PATH));
                FileUtility.moveFile(properties.get(ReportConstants.DCS_INPUT_PATH) + ReportConstants.DCS_MASTER_FILE,
                        properties.get(ReportConstants.DCS_ARCHIVE_PATH)+ReportConstants.DCS_MASTER_FILE+FileUtility.getArchivedPattern());*/
            }else{
                EmailService.sendExceptionMail(properties.getProperty(ReportConstants.EMAIL_EXCEPTION_TO),
                        properties.getProperty(ReportConstants.EMAIL_EXCEPTION_CC),
                                " No data in master file ",
                                "DCS : Empty Master File");
                throw new Exception("No data in master file");
            } 

        } catch (FileNotFoundException e) {
            log.error("File not present while reading Master file ",e);
            EmailService.sendExceptionMail(properties.getProperty(ReportConstants.EMAIL_EXCEPTION_TO),
                    properties.getProperty(ReportConstants.EMAIL_EXCEPTION_CC),
                            " File not present while reading Master file \n\n"+e.getMessage(),
                            "DCS Report : Master File");
        } catch (IOException e) {
            log.error("Input/Output Exception occured while reading Master file ",e);
            EmailService.sendExceptionMail(properties.getProperty(ReportConstants.EMAIL_EXCEPTION_TO),
                    properties.getProperty(ReportConstants.EMAIL_EXCEPTION_CC),
                            " Input/Output Exception occured while reading Master file \n\n"+e.getMessage(),
                            "DCS Report : Master File");
        } catch (Exception e) {
            log.error("Genric exception occured while reading Master file ",e);
            EmailService.sendExceptionMail(properties.getProperty(ReportConstants.EMAIL_EXCEPTION_TO),
                    properties.getProperty(ReportConstants.EMAIL_EXCEPTION_CC),
                            "Exception Occurred : \n\n"+e.getMessage(),
                            "DCS Report : Master File");
        }
     finally{
         try {
                if (null!=excelFile) {
                    excelFile.close();
                }
                if(null!=workbook){
                    workbook.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }



 }
         return masterMap;
    }

Further I am saving details to Map and returning it for later use. I am using:

• poi-3.13.jar
• java 1.7

Edit 1: Added my completed method, hope it helps to replicate the issue.

Edit 2: After clicking Yes on error pop-up message and saving it, program works fine.

Is there any way to handle this. Please suggest

Answer 1

For mentioned file above, I am using below snippet to read file, it returns StreamingReader object. it can be used further same as Sheet .

Code

import com.monitorjbl.xlsx.StreamingReader;

public static StreamingReader getExcelSheet(File excelFile, String sheetName) throws Exception{
        StreamingReader reader = null;
        reader = StreamingReader.builder()
                .rowCacheSize(100) // number of rows to keep in memory (defaults to 10)
                .bufferSize(4096) // buffer size to use when reading InputStream to file (defaults to 1024)
                .sheetName(sheetName) // index of sheet to use (defaults to 0)
                .read(excelFile);
        return reader;
    }

StreamingReader sheet1 = FileUtility.getExcelSheet(excelFile, sheetName);   
for (Row r : sheet1){

    // iterate row here

    for (Cell cell : r) {

    //iterate cells here

    }

}

Hope this help's someone.