在解析JSON时,字符981.Error周围的非转义控制字符

Question

错误域= NSCocoaErrorDomain代码= 3840"字符981周围未转义的控制字符." UserInfo = {NSDebugDescription =字符981周围未转义的控制字符.}

我在响应请求时遇到上述错误.

以下是代码行:

Alamofire.request(.POST, urlStr, parameters: parameter, encoding: .JSON, headers: nil).validate().responseJSON {
            response in switch response.result {

            case .Success(let JSON):
                completionHandler(JSON as! NSDictionary)

            case.Failure(let Error):

                print(Error)
            }
        }

它在Postman中提供JSON响应.

我在邮递员中得到的回应:

{
  "orderdetails": {
    "status_code": "200",
    "status_message": "Order details",
    "billingandshipping": {
      "billing": {
        "firstname": "first",
        "lastname": "last",
        "email": "aa@bbb.com",
        "address": "dasdesfrew",
        "city": "Rajkot",
        "area": "University Road",
        "pincode": "360003",
        "phone": "1234567890",
        "mobileno": "1234567891"
      },
      "shipping": {
        "firstname": "first",
        "lastname": "last",
        "email": "aa@bbb.com",
        "address": "dasdesfrew",
        "city": "dasdesfrew",
        "area": "dcdc",
        "pincode": "360003",
        "phone": "1234567890",
        "mobileno": "1234567891"
      }
    },
    "orders": [
      {
        "order_id": "77",
        "order_date": "09-08-2016 13:05:29",
        "delivery_date": "10-08-2016",
        "order_items": [
          {
            "Sr": "1",
            "product_name": "Lemon",
            "gujtitle": "????? ",
            "product_code": "000057",
            "product_price": "108.00",
            "product_qty": "2",
            "unit": "1 kg.",
            "product_total": "216"
          }
        ],
        "final_total": "216.00",
        "shipping_cost": "0.00",
        "order_total": "216.00",
        "discount_type": "null",
        "discount_amount": "null",
        "coupon_name": "null",
        "comment": "gdhdj\nfghd.g\nghj\n\n\n\n\n\n\n\n\n\n.."
      }
    ]
  }
}

Answer 1

根据你的说法,有与"\n"有关的问题

所以我建议你可以添加"\",这对你有用,如下所示

"\n"=>"\\n"

因为这是特殊字符调用退格符.

希望你能得到答案

Answer 2

从 Swift 5 开始，您可以使用以下语法将其简单地声明为原始字符串文字，而不是手动添加另一个\有效的JSON 字符串：\n

let jsonString = #"{"comment": "gdhdj\nfghd.g\nghj\n\n\n\n\n\n\n\n\n\n.."}"#

多行也可以工作：

let jsonString = #"""
{
  "comment": "gdhdj\nfghd.g\nghj\n\n\n\n\n\n\n\n\n\n.."
}
"""#

请注意，包装 with#至关重要 - 虽然多行示例在没有它的情况下可以正常编译，但在运行时，它会在下面的 JSONSerialization 示例中抛出错误：

do {
    guard let data = jsonString.data(using: .utf8) else { throw SomeError() }
    let obj = try JSONSerialization.jsonObject(with: data)
    print("valid!")
} catch {
    print(error)
}