java.util.MissingFormatArgumentException:格式说明符:s [英] java.util.MissingFormatArgumentException: Format specifier: s

问题描述

我正在尝试将数据添加到android中的SQLite数据库中，但是却收到错误消息"java.util.MissingFormatArgumentException:格式说明符:s".我试图找出问题所在，但找不到.

I am trying to add data to SQLite database in android, But I am getting error, "java.util.MissingFormatArgumentException: Format specifier: s". I tried to figure out the problem but I can't find it.

按钮OnClickListener可以将数据添加到数据库中.

Button OnClickListener to add data to database.

 addToCart.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            new Database(getBaseContext()).addToCart(new Order(
                    foodId,
                    foodItem.getName(),
                    quantity.getNumber(),
                    foodItem.getPrice(),
                    foodItem.getDiscount(),
                    foodItem.getImage()
            ));

            Toast.makeText(ItemDetailsActivity.this, "Item added to your basket.", Toast.LENGTH_SHORT).show();

        }
    });

添加方法

  public void addToCart(Order order){
    SQLiteDatabase db = getReadableDatabase();
    String query = String.format("INSERT INTO OrderDetails(Productid,ProductName,Quantity,Price,Discount,Image) VALUES('%s','%s','%s','%s','%s','%s');",
            order.getProductid(),
            order.getProductName(),
            order.getQuantity(),
            order.getPrice(),
            order.getDiscount());
    db.execSQL(query);
}

推荐答案

String query = String.format("INSERT INTO OrderDetails(Productid,ProductName,Quantity,Price,Discount,Image) VALUES('%s','%s','%s','%s','%s','%s');",
        order.getProductid(),
        order.getProductName(),
        order.getQuantity(),
        order.getPrice(),
        order.getDiscount());

您有六个％s 格式的占位符，但仅提供了五个值.

You have six %s format placeholders but you're supplying only five values.

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