OpenCSV :在解析方法上抛出捕获csv标头的错误

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List<CSVCouponData> csvData = CSVFileHelper.parseCSVFile(multipartFile.getInputStream());

public static List<CSVCouponData> parseCSVFile(InputStream inputStream) throws IOException {
        CSVReader reader = null;
        List<CSVCouponData> rec = null;
        try {
           reader = new CSVReader(new InputStreamReader(inputStream));
           HeaderColumnNameMappingStrategy<CSVCouponData> beanStrategy = new HeaderColumnNameMappingStrategy<>();
           beanStrategy.setType(CSVCouponData.class);
           CsvToBean<CSVCouponData> csvToBean = new CsvToBean<>();
           csvToBean.setCsvReader(reader);
           csvToBean.setMappingStrategy(beanStrategy);
           csvToBean.setIgnoreEmptyLines(true);
           rec = csvToBean.parse();
       } finally {
            if(reader != null)
                reader.close();
        return rec;
    }

public class CSVCouponData {
    @CsvBindByName(column = "name", required = true)
    private String name;
    @CsvBindByName(column = "coupon-type", required = true)
    private String couponType;
    @CsvBindByName(column = "incentive-program-id", required = true)
    private String programId;
    @CsvBindByName(column = "coupons-amount")
    private Long couponsAmount;
    @CsvBindByName(column = "coupon-benefits.unit-of-measure")
    private String unitOfMeasure;
    @CsvBindByName(column = "coupon-benefits.benefit-target-party")
    private String benefitTargetParty;
    @CsvBindByName(column = "coupon-benefits.characteristics")
    private String characteristics;
    @CsvBindByName(column = "coupon-benefits.benefit-type")
    private String benefitType;
    @CsvBindByName(column = "coupon-benefits.benefit-confirmation-source")
    private String benefitConfirmationSource;
    @CsvBindByName(column = "coupon-benefits.benefit-currency")
    private String benefitCurrency;
    @CsvBindByName(column = "coupon-benefits.benefit-amount")
    private String benefitAmount;
    @CsvBindByName(column = "coupon-benefits.benefit-description", required = true)
    private String benefitDescription;
    @CsvBindByName(column = "benefit-catalog-info.product-offering-ids")
    private String productOfferingIds;
    @CsvBindByName(column = "benefit-catalog-info.discount-id")
    private String discountId;
    @CsvBindByName(column = "benefit-catalog-info.cardinality.min")
    private Integer cardinalityMin;
    @CsvBindByName(column = "benefit-catalog-info.cardinality.max")
    private Integer cardinalityMax;
    @CsvBindByName(column = "external-id", required = true)
    private String externalId;
    @CsvBindByName(column = "valid_from", required = true)
    private String validFrom;
    @CsvBindByName(column = "valid_to", required = true)
    private String validTo;
    @CsvBindByName(column = "sales_context.batch-id")
    private String batchId;
    @CsvBindByName(column = "sales_context.campaign-id")
    private String campaignId;
    @CsvBindByName(column = "sales_context.chain-id")
    private String chainId;
    @CsvBindByName(column = "sales_context.channel")
    private String channel;
    @CsvBindByName(column = "sales_context.dealer-id")
    private String dealerId;
    @CsvBindByName(column = "sales_context.sales-type")
    private String salesType;
    @CsvBindByName(column = "sales_context.salesperson-id")
    private String salesPersonId;
    @CsvBindByName(column = "incentive-coupon-batches.partner-name", required = true)
    private String partnerName;
    @CsvBindByName(column = "incentive-coupon-batches.redemption-specification-owner", required = true)
    private String redemptionSpecificationOwner;
    @CsvBindByName(column = "incentive-coupon-batches.distribution-specification.owner", required = true)
    private String distributionSpecificationOwner;
    @CsvBindByName(column = "incentive-coupon-batches.distribution-specification.method", required = true)
    private String distributionSpecificationMethod;