无法将动态发票值发送到struts2服务器

上面的代码没有将值传递给服务器端对象。其console.log值为

关于修改以上数据

   /*if ($scope.fproducts.length > 0) {
        $scope.fproducts.forEach((total, index) => {
            Object.entries(total).forEach(([key, value]) => {
                console.log(index + "  " + key + " " + value);
                $scope.bd1[`billProductList[${index}].${key}`] = value;
            });
        });
    }*/
    $scope.bd1[`billProductList[0].id`] = 1;
    $scope.bd1[`billProductList[0].description`] = 1;
    $scope.bd1[`billProductList[0].discountPercent`] = 150;
    $scope.bd1[`billProductList[0].qty`] = 10;
    $scope.bd1[`billProductList[0].sellingPrice`] = 100;
    $scope.bd1[`billProductList[0].unitPrice`] = 100;
    $scope.bd1[`billProductList[0].total`] = 150;

因为这是将值传递给服务器对象，所以console.log是

我想使用if条件中指定的动态值运行代码。有什么问题我无法解决。

编辑 我正在使用服务器端struts2我的代码是

public class BillNewAction extends ActionSupport implements ModelDriven {

    BillDetails bd = new BillDetails();
    private List billList = new ArrayList();

    public String insert() {
        System.out.println("total " + bd.getTotal()
                + " subTotal " + bd.getSubTotal() + " paid " 
                + bd.getTotalPaid()
                + " invoiceDate " + bd.getInvDateStr()
        );
        SimpleDateFormat formatter1 = new SimpleDateFormat("MM/dd/yyyy");
        try {
            bd.setInvoiceDate((new java.sql.Date(formatter1.parse(bd.getInvDateStr()).getTime())));
        } catch (ParseException ex) {
            Logger.getLogger(BillNewAction.class.getName()).log(Level.SEVERE, null, ex);
        }
        for (BillPaidDetails b : bd.getBillPaidDetailses()) {
            System.out.println("type " + b.getPaymentMode() + " amount "
                + b.getAmount()
            );
        }
        System.out.println("product size " + bd.getBillPrList().size());
        for (BillProduct b : bd.getBillPrList()) {
            System.out.println("id " + b.getId() + " desc  " 
                + b.getDescription() + " qty " + b.getQty()
                + " sp " + b.getSellingPrice() + " up " 
                + b.getUnitPrice() + " " + b.getTotal()
            );
        }
    }
}

公共类BillDetails实现java.io.Serializable {

private Long billNo;
private Client client;
private BigDecimal subTotal;
private BigDecimal TotalAmount;//total price
private BigDecimal TotalPaid;//Amount paid for  getting items
private BigDecimal vat;
private BigDecimal total;
private String invoiceNo;
private Date invoiceDate;
private String invDateStr;
private List BillPaidDetailses = new ArrayList();
private List billPrList = new ArrayList();
//getter and setter
 }

我必须以$scope.bd1[billProductList[0].id] = 1;格式将数据发送到服务器

分配传递数据到服务器的单个价值，但是我没有动态值，所以我正在尝试

if ($scope.fproducts.length > 0) { 
    $scope.fproducts.forEach((total, index) => {
        Object.entries(total).forEach(([key, value]) => {
            console.log(index + " " + key + " " + value);
            $scope.bd1[billProductList[${index}].${key}] = value;
        });
    });
}

那不起作用