如何使用 Argonaut 解析 Map[String,String]答案

【问题标题】：How to parse a Map[String,String] with Argonaut如何使用 Argonaut 解析 Map[String,String]
【发布时间】：2016-03-25 17:48:32
【问题描述】：

我想解析类似的东西：

{
          "OutputDocumentType": "receipt",
          "ParsedFields": {
            "smart_tags": "RÂ°\nVul\nZe",
            "vendor": "",
            "vendor_terms": "",
            "vendor_warranty": "",
            "vendor_support": "",
            "vendor_url": "",
            "expense_category": "General Retail",
            "tracking_no": null,
            "carrier_name": null,
            "tracking_link": null,
            "tracking_status": null,
            "shipping_speed": null,
            "date_shipped": null,
            "date_estimated": null,
            "shipping_address_street_1": null,
            "shipping_address_street_2": null,
            "shipping_address_state_province": null,
            "shipping_address_city": null,
            "shipping_address_zip": null,
            "shipping_phone": null,
            "shipping_mobile": null,
            "shipping_fax": null,
            "account": "",
            "purchase_confirmation_no": "",
            "purchase_order_no": "",
            "purchase_time": "",
            "purchase_invoice_no": "",
            "purchase_invoice_date": "",
            "purchase_discounts": "",
            "subtotal_amount": "",
            "shipping_cost": "",
            "purchase_warranty": "",
            "transaction_id": "",
            "payment_address_street_1": "",
            "payment_address_street_2": "",
            "payment_address_city": "",
            "payment_address_state_province": "",
            "payment_address_zip": "",
            "payment_phone": "",
            "payment_mobile": "",
            "payment_fax": "",
            "receipt_date": "",
            "payment_type": "Cash",
            "total_amount": "$16.95"
          }
}

但是当我尝试它在tracking_no 失败时，因为值是null。如何让它只接受null 值？

【问题讨论】：

所以你无法将Map[String, String]解析成JSON Object，即Map[String, ArgonautJsValue]，其中ArgonautJsValue代表：JSON、String、Number等？

标签： json scala argonaut

【解决方案1】：

只需将地图设为Map[String,Option[String]] 即可解决问题。

【讨论】：