iOS Swift:"JSON文本不是以数组或对象开头，并且不允许片段设置的选项." [英] iOS Swift:"JSON text did not start with array or object and option to allow fragments not set."

问题描述

当我迅速将Json字符串转换成字典时，出现了问题:错误域= NSCocoaErrorDomain代码= 3840"JSON文本不是以数组或对象开头，并且选项允许不设置片段. UserInfo = {NSDebugDescription = JSON文本不是以数组或对象开头，并且没有允许设置片段的选项.}

When I converting Json string to dictionary in swift I got the Issue:Error Domain=NSCocoaErrorDomain Code=3840 "JSON text did not start with array or object and option to allow fragments not set." UserInfo={NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}

我不知道要解决此问题，请给出解决该问题的想法.在这里，我向我提供了我尝试过的代码.

I don't know to fix the issue please give idea for fix the issue.Here I gave my code what i am tried..

将Json字符串转换为字典的方法是

The method for converting Json string to dictionary is,

func convertToDictionary(from text: String) throws -> [String: String] {
    guard let data = text.data(using: .utf8) else { return [:] }
    let anyResult: Any = try JSONSerialization.jsonObject(with: data, options: [])
    return anyResult as? [String: String] ?? [:]
}

Json字符串为:"[{\"propertyId\":\"1\",\"inspectionTemplateId\":1118,\"value\":[{\"widgetControllerId\":141,\"value\":\"Flood Summary Name\"},{\"widgetControllerId\":142,\"value\":\"Did the property flood?\"},{\"widgetControllerId\":143,\"value\":\"no\"}]}]"

The Json String is: "[{\"propertyId\":\"1\",\"inspectionTemplateId\":1118,\"value\":[{\"widgetControllerId\":141,\"value\":\"Flood Summary Name\"},{\"widgetControllerId\":142,\"value\":\"Did the property flood?\"},{\"widgetControllerId\":143,\"value\":\"no\"}]}]"

方法的用法是:

let jsonString = NSString(data: responseObject as! Data, encoding: String.Encoding.utf8.rawValue)!
        print(jsonString)
        do {
            let dictionary:NSDictionary = try self.convertToDictionary(from: jsonString as String) as NSDictionary
            print(dictionary)
        } catch {
            print(error)
        }

推荐答案

阅读错误信息.错误是不允许设置片段". 只需设置.allowFragments. 而已. (确保响应没有格式错误)

Read the error gentleman. Error is 'allow fragments not set'. Just Just just set .allowFragments. That's it. (Make sure response is not malformatted)

JSONSerialization.jsonObject(with: data!, options: .allowFragments)

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