是否存在使用opencsv API或Apache Poi Api的限制？

Question

我正在基于CSV文件创建Excel文件.对于读取CSV文件,我使用的是Opencsv API和Apache POI.在我的csv中包含65537行.

class Test {
public static void main(String[] args) throws IOException {
    Workbook wb = new HSSFWorkbook();
    CreationHelper helper = wb.getCreationHelper();
    Sheet sheet = wb.createSheet("new sheet");

    CSVReader reader = new CSVReader(new FileReader("SampleData.csv"));
    String[] line;
    int r = 0;int count=0;
    while ((line = reader.readNext()) != null) {
        Row row = sheet.createRow((short) r++);
        count=count+1;
         System.out.println("count-"+count);
        for (int i = 0; i < line.length; i++)
            row.createCell(i)
               .setCellValue(helper.createRichTextString(line[i]));
    }

    // Write the output to a file
    FileOutputStream fileOut = new FileOutputStream("workbook.xls");
    wb.write(fileOut);
    fileOut.close();
}}

当我运行这个程序时,它会给我以下错误:

Exception in thread "main" java.lang.IllegalArgumentException: Invalid row number (-32768) outside allowable range (0..65535)at org.apache.poi.hssf.usermodel.HSSFRow.setRowNum(HSSFRow.java:232)
    at org.apache.poi.hssf.usermodel.HSSFRow.<init>(HSSFRow.java:86)
    at org.apache.poi.hssf.usermodel.HSSFRow.<init>(HSSFRow.java:70)
    at org.apache.poi.hssf.usermodel.HSSFSheet.createRow(HSSFSheet.java:205)
    at org.apache.poi.hssf.usermodel.HSSFSheet.createRow(HSSFSheet.java:71)
    at com.arosys.utilityclasses.Test.main(Test.java:23)Java Result: 1

我试图追踪它支持多少行我发现它只支持32768并尝试了更少的行数,它运行良好并创建excel文件.

请帮我解决这个问题,如果我的csv包含65536行,那么我怎么打包写excel文件(Xls).

谢谢

Answer 1

为什么要在下一行中将行数转换为short

 Row row = sheet.createRow((short) r++);

把它留作int