如何在iOS Swift中将JSON转换为String? [英] How to convert JSON to String in ios Swift?

问题描述

这是下面的Json输出的代码:

Here is the code for the below Json output:

let params : [[String : AnyObject]]  = [["name" : "action", "value" : "pay" ],["name" : "cartJsonData" , "value" : ["total": 1,"rows":[["quantity": "1" ,"title":"Donation for SMSF India - General Fund","price":"1","itemId":"DN001","cost": "1","currency":"INR"]]]], ["name" : "center", "value" : "Chennai"], ["name" : "flatNumber", "value" : "503"], ["name" : "panNumber", "value" : ""], ["name" : "payWith"], ["name" : "reminderFrequency","value" : "Monthly"],  ["name" : "shipToAddr1"], ["name" : "shipToAddr2"], ["name" : "shipToCity"], ["name" : "shipToCountryName" , "value" : "India"], ["name" : "shipToEmail", "value" : "[e-mail]"], ["name" : "shipToFirstName" , "value": "4480101010"], ["name" : "shipToLastName"], ["name" : "shipToPhone", "value" : "4480101010"], ["name" : "shipToState"], ["name" : "shipToZip"], ["name" : "userId", "value" : "null"], ["name" : "shipToCountry", "value" : "IN"]]

var jsonObject: NSData? = nil

do {
   jsonObject = try NSJSONSerialization.dataWithJSONObject(params, options: NSJSONWritingOptions())
   print(jsonObject) // This will print the below json. 
} 
catch{}

通过打印jsonObject，我得到了这个.

By printing jsonObject, I got this one.

[{"value":"pay"，"name":"action"}，{"value":{"rows":[{ 价格":"1"，数量":"1"，成本":"1"，货币":"INR"， "itemId":"DN001"，"title":向SMSF印度捐款-普通基金" }]，"total":1}，"name":"cartJsonData"}，{"value":"Chennai"， "name":"center"}，{"value":"503"，"name":"flatNumber"}，{ "value":"，"name":"panNumber"}，{"name":"payWith"}，{"value": 每月"，名称":"reminderFrequency"}，{名称":"shipToAddr1"}，{ "name":"shipToAddr2"}，{"name":"shipToCity"}，{"value":"India"， "name":"shipToCountryName"}，{"value":"[e-mail]"， "name":"shipToEmail"}，{"value":"4480101010"，"name": "shipToFirstName"}，{"name":"shipToLastName"}，{"value": "4480101010"，名称":"shipToPhone"}，{名称":"shipToState"}，{ "name":"shipToZip"}，{"value":"null"，"name":"userId"}，{ "value":"IN"，"name":"shipToCountry"}]

[{ "value": "pay", "name": "action" }, { "value": { "rows": [{ "price": "1", "quantity": "1", "cost": "1", "currency": "INR", "itemId": "DN001", "title": "Donation for SMSF India - General Fund" }], "total": 1 }, "name": "cartJsonData" }, { "value": "Chennai", "name": "center" }, { "value": "503", "name": "flatNumber" }, { "value": "", "name": "panNumber" }, { "name": "payWith" }, { "value": "Monthly", "name": "reminderFrequency" }, { "name": "shipToAddr1" }, { "name": "shipToAddr2" }, { "name": "shipToCity" }, { "value": "India", "name": "shipToCountryName" }, { "value": "[e-mail]", "name": "shipToEmail" }, { "value": "4480101010", "name": "shipToFirstName" }, { "name": "shipToLastName" }, { "value": "4480101010", "name": "shipToPhone" }, { "name": "shipToState" }, { "name": "shipToZip" }, { "value": "null", "name": "userId" }, { "value": "IN", "name": "shipToCountry" }]

我希望JSON采用以下格式.

And I want the JSON to be in the below format.

[{名称":操作"，值":支付"}，{名称":"cartJsonData"， 价值": "{\"总计\":1，\行\":[{\" itemId \":\"DN002 \"，\标题\":\为 SMSF印度-常规 基金\"\\"数量\:\" 100 \，\"货币\:\" INR \，\"价格\:\" 1 \，\"成本\:\" 100 \ "}]}" }，{"name":"center"，"value":"Chennai"}，{"name":"flatNumber"， "value":"}，{名称":"panNumber"，"value":"ASSDDBBDJD"}，{ 名称":"payWith"}，{名称":"reminderFrequency"，值":每月" }，{名称":"shipToAddr1"}，{名称":"shipToAddr2"}，{名称": "shipToCity"}，{名称":"shipToCountryName"，值":印度"}，{ 名称":"shipToEmail"，值":"[e-mail]"}，{名称": "shipToFirstName"，"value":"Raju"}，{"name":"shipToLastName"}，{ 名称":"shipToPhone"，值":"1234567890"}，{名称": "shipToState"}，{名称":"shipToZip"}，{名称":"userId"，值": "null"}，{名称":"shipToCountry"，值":"IN"}]

[{ "name": "action", "value": "pay" }, { "name": "cartJsonData", "value": "{\"total\":1,\"rows\":[{\"itemId\":\"DN002\",\"title\":\"Donation for SMSF India - General Fund\",\"quantity\":\"100\",\"currency\":\"INR\",\"price\":\"1\",\"cost\":\"100\"}]}" }, { "name": "center", "value": "Chennai" }, { "name": "flatNumber", "value": " " }, { "name": "panNumber", "value": "ASSDDBBDJD" }, { "name": "payWith" }, { "name": "reminderFrequency", "value": "Monthly" }, { "name": "shipToAddr1" }, { "name": "shipToAddr2" }, { "name": "shipToCity" }, { "name": "shipToCountryName", "value": "India" }, { "name": "shipToEmail", "value": "[e-mail]" }, { "name": "shipToFirstName", "value": "Raju" }, { "name": "shipToLastName" }, { "name": "shipToPhone", "value": "1234567890" }, { "name": "shipToState" }, { "name": "shipToZip" }, { "name": "userId", "value": "null" }, { "name": "shipToCountry", "value": "IN" }]

该怎么办?仅需要更改cartJsonData中的值.有人可以帮我解决这个问题吗?

How can it be done? Only the value in cartJsonData needs to be changed. Can someone help me on this to solve it?

推荐答案

尝试一下.

func jsonToString(json: AnyObject){
        do {
          let data1 =  try NSJSONSerialization.dataWithJSONObject(json, options: NSJSONWritingOptions.PrettyPrinted) // first of all convert json to the data
            let convertedString = String(data: data1, encoding: NSUTF8StringEncoding) // the data will be converted to the string
            print(convertedString) // <-- here is ur string  

        } catch let myJSONError {
            print(myJSONError)
        }

    }

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