Question

我找不到任何方法来检查POI表是否有空行。我试过，Sheet.getLastRowNum（），Sheet.getFirstRowNum（），Sheet.rowIterator（），它们都发布了NPE。

我现在真的很困惑。

注意：但是Sheet对象本身不是null。

int numberOfSheets = wb.getNumberOfSheets();
    Sheet sheet;
    int maxColumnsCount = 0, headerRowIndex = 0;
    Row row;
    Member member;
    List<Member> members = new ArrayList<>();
    for (int i = 0; i < numberOfSheets; i++) {
        sheet = wb.getSheetAt(i);
        //find the maximum cells in a row, it is assumed that max cells container is only valid data. Otherwise Header or Footer.
       //THISE LINE('sheet.getPhysicalNumberOfRows()') GIVE ME NULL POINTER EXCEPTION.
        for (int rowIndex = 0; rowIndex < sheet.getPhysicalNumberOfRows(); rowIndex++) {
            row = sheet.getRow(rowIndex);
            if (maxColumnsCount < row.getPhysicalNumberOfCells()) {
                maxColumnsCount = row.getPhysicalNumberOfCells();
                headerRowIndex = rowIndex;
            } else {
                break;
            }
        }
        for (int rowIndex = 0; rowIndex < sheet.getPhysicalNumberOfRows(); rowIndex++) {
            row = sheet.getRow(rowIndex);
            if (headerRowIndex < rowIndex) {
                member = parseMember(row, memberExcelImportType);
                member.getTownship().setId(townshipId);
                if (StringUtils.isNotEmpty(member.getFullName()))
                    members.add(member);
            }
        }
    }

对不起，这是堆栈跟踪。

java.lang.NullPointerException
at org.apache.poi.xssf.usermodel.XSSFSheet.getPhysicalNumberOfRows(XSSFSheet.java:842)
at com.taraaung.tarabar.tarabarlibs.utility.ImportUtilPOI.readExcelFileUsingPOI(ImportUtilPOI.java:45)
at com.taraaung.tarabar.tarabarlibs.utility.ImportUtils.readExcelFile(ImportUtils.java:32)
at com.taraaung.taraserver.server.personExportImportUrl.PersonExportImportHttpServe.doPersonImport(PersonExportImportHttpServe.java:153)
at com.taraaung.taraserver.server.personExportImportUrl.PersonExportImportHttpServe.serve(PersonExportImportHttpServe.java:86)
at com.taraaung.taraserver.server.MyServer$ValidateSession.serve(MyServer.java:2608)
at com.taraaung.taraserver.server.MyServer.serve(MyServer.java:770)
at com.taraaung.taraserver.server.NanoHTTPD$HTTPSession.execute(NanoHTTPD.java:1557)
at com.taraaung.taraserver.server.NanoHTTPD$ClientHandler.run(NanoHTTPD.java:1152)
at java.lang.Thread.run(Thread.java:745)

嗯，刚刚发现发布NPE的工作表是ChartSheet（即，它没有任何类型的行），然后我只检查工作表的实例并跳过图表床单。：D if (sheet instanceof XSSFChartSheet) { continue; } “谢谢你的帮助”

有没有办法在POI java库中检查excel表是否有行？

0 个答案: