{
  "service": "Country Name Converter API",
  "version": "1.0",
  "usage": {
    "GET": {
      "url": "/country_name",
      "example": "/United States",
      "description": "直接在URL路径中传入国家名称"
    },
    "POST": {
      "url": "/",
      "content_type": "application/json 或 text/plain",
      "examples": {
        "country_name": "United States",
        "json_with_giftCertCountry": {
          "errorMessage": "giftCertCountry=United States"
        }
      },
      "description": "POST请求体中传入国家名称或包含giftCertCountry的JSON"
    }
  },
  "response_format": {
    "success": {
      "code": "us",
      "chinese": "美国",
      "original": "United States"
    },
    "error": {
      "error": "Country not found"
    }
  }
}