blocks|key|76821|text|因为简单的字符串扩展应该足够了：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|76822|extension+String+{

++++var+parseJSONString:+AnyObject?+{

++++++++let+data+=+self.dataUsingEncoding(NSUTF8StringEncoding,+allowLossyConversion:+false)

++++++++if+let+jsonData+=+data+{
++++++++++++//+Will+return+an+object+or+nil+if+JSON+decoding+fails
++++++++++++return+NSJSONSerialization.JSONObjectWithData(jsonData,+options:+NSJSONReadingOptions.MutableContainers,+error:+nil)
++++++++}+else+{
++++++++++++//+Lossless+conversion+of+the+string+was+not+possible
++++++++++++return+nil
++++++++}
++++}
}|code-block|syntax|javascript|76823|然后：|76824|var+jsonString+=+"[\n"+%2B
++++"{\n"+%2B
++++"\"id\":72,\n"+%2B
++++"\"name\":\"Batata+Cremosa\",\n"+%2B++++++++++++
++++"},\n"+%2B
++++"{\n"+%2B
++++"\"id\":183,\n"+%2B
++++"\"name\":\"Caldeirada+de+Peixes\",\n"+%2B++++++++++++
++++"},\n"+%2B
++++"{\n"+%2B
++++"\"id\":76,\n"+%2B
++++"\"name\":\"Batata+com+Cebola+e+Ervas\",\n"+%2B++++++++++++
++++"},\n"+%2B
++++"{\n"+%2B
++++"\"id\":56,\n"+%2B
++++"\"name\":\"Arroz+de+forma\",\n"+%2B++++++++++++
"}]"

let+json:+AnyObject?+=+jsonString.parseJSONString
println("Parsed+JSON:+\(json!)")
println("json[3]:+\(json![3])")

/*+Output:

Parsed+JSON:+(
++++{
++++id+=+72;
++++name+=+"Batata+Cremosa";
++++},
++++{
++++id+=+183;
++++name+=+"Caldeirada+de+Peixes";
++++},
++++{
++++id+=+76;
++++name+=+"Batata+com+Cebola+e+Ervas";
++++},
++++{
++++id+=+56;
++++name+=+"Arroz+de+forma";
++++}
)

json[3]:+{
++++id+=+56;
++++name+=+"Arroz+de+forma";
}
*/|76825|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

As simple String extension should suffice:

<pre><code>extension String {

 var parseJSONString: AnyObject? {

 let data = self.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)

 if let jsonData = data {
 // Will return an object or nil if JSON decoding fails
 return NSJSONSerialization.JSONObjectWithData(jsonData, options: NSJSONReadingOptions.MutableContainers, error: nil)
 } else {
 // Lossless conversion of the string was not possible
 return nil
 }
 }
}
</code></pre>

Then:

<pre><code>var jsonString = "[\n" +
 "{\n" +
 "\"id\":72,\n" +
 "\"name\":\"Batata Cremosa\",\n" + 
 "},\n" +
 "{\n" +
 "\"id\":183,\n" +
 "\"name\":\"Caldeirada de Peixes\",\n" + 
 "},\n" +
 "{\n" +
 "\"id\":76,\n" +
 "\"name\":\"Batata com Cebola e Ervas\",\n" + 
 "},\n" +
 "{\n" +
 "\"id\":56,\n" +
 "\"name\":\"Arroz de forma\",\n" + 
"}]"

let json: AnyObject? = jsonString.parseJSONString
println("Parsed JSON: \(json!)")
println("json[3]: \(json![3])")

/* Output:

Parsed JSON: (
 {
 id = 72;
 name = "Batata Cremosa";
 },
 {
 id = 183;
 name = "Caldeirada de Peixes";
 },
 {
 id = 76;
 name = "Batata com Cebola e Ervas";
 },
 {
 id = 56;
 name = "Arroz de forma";
 }
)

json[3]: {
 id = 56;
 name = "Arroz de forma";
}
*/
</code></pre>

blocks|key|4583461|text|我喜欢RDC的响应，但是为什么要限制返回的JSON只能在顶层拥有数组呢？我需要在顶层允许一个字典，所以我对它进行了如下修改：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4583462|extension+String
{
++++var+parseJSONString:+AnyObject?
++++{
++++++++let+data+=+self.dataUsingEncoding(NSUTF8StringEncoding,+allowLossyConversion:+false)

++++++++if+let+jsonData+=+data
++++++++{
++++++++++++//+Will+return+an+object+or+nil+if+JSON+decoding+fails
++++++++++++do
++++++++++++{
++++++++++++++++let+message+=+try+NSJSONSerialization.JSONObjectWithData(jsonData,+options:.MutableContainers)
++++++++++++++++if+let+jsonResult+=+message+as?+NSMutableArray+{
++++++++++++++++++++return+jsonResult+//Will+return+the+json+array+output
++++++++++++++++}+else+if+let+jsonResult+=+message+as?+NSMutableDictionary+{
++++++++++++++++++++return+jsonResult+//Will+return+the+json+dictionary+output
++++++++++++++++}+else+{
++++++++++++++++++++return+nil
++++++++++++++++}
++++++++++++}
++++++++++++catch+let+error+as+NSError
++++++++++++{
++++++++++++++++print("An+error+occurred:+\(error)")
++++++++++++++++return+nil
++++++++++++}
++++++++}
++++++++else
++++++++{
++++++++++++//+Lossless+conversion+of+the+string+was+not+possible
++++++++++++return+nil
++++++++}
++++}|code-block|syntax|javascript|4583463|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I like RDC's response, but why limit the JSON returned to have only arrays at the top level? I needed to allow a dictionary at the top level, so I modified it thus:

<pre><code>extension String
{
 var parseJSONString: AnyObject?
 {
 let data = self.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)

 if let jsonData = data
 {
 // Will return an object or nil if JSON decoding fails
 do
 {
 let message = try NSJSONSerialization.JSONObjectWithData(jsonData, options:.MutableContainers)
 if let jsonResult = message as? NSMutableArray {
 return jsonResult //Will return the json array output
 } else if let jsonResult = message as? NSMutableDictionary {
 return jsonResult //Will return the json dictionary output
 } else {
 return nil
 }
 }
 catch let error as NSError
 {
 print("An error occurred: \(error)")
 return nil
 }
 }
 else
 {
 // Lossless conversion of the string was not possible
 return nil
 }
 }
</code></pre>

blocks|key|76856|text|swift+3/4|type|unstyled|depth|inlineStyleRanges|entityRanges|data|76857|extension+String+{
++++func+toJSON()+->+Any?+{
++++++++guard+let+data+=+self.data(using:+.utf8,+allowLossyConversion:+false)+else+{+return+nil+}
++++++++return+try?+JSONSerialization.jsonObject(with:+data,+options:+.mutableContainers)
++++}
}|code-block|syntax|javascript|76858|示例用法：|76859|+let+dict+=+myString.toJSON()+as?+[String:AnyObject]+//+can+be+any+type+here|76860|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

for swift 3/4

<pre><code>extension String {
 func toJSON() -&gt; Any? {
 guard let data = self.data(using: .utf8, allowLossyConversion: false) else { return nil }
 return try? JSONSerialization.jsonObject(with: data, options: .mutableContainers)
 }
}
</code></pre>

Example Usage:

<pre><code> let dict = myString.toJSON() as? [String:AnyObject] // can be any type here
</code></pre>

blocks|key|4583499|text|对于iOS+10和Swift+3，使用Alamofire和Gloss|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4583500|Alamofire.request("http://localhost:8080/category/en").responseJSON+{+response+in

if+let+data+=+response.data+{

++++if+let+categories+=+[Category].from(data:+response.data)+{

++++++++self.categories+=+categories

++++++++self.categoryCollectionView.reloadData()
++++}+else+{

++++++++print("Casting+error")
++++}
++}+else+{

++++print("Data+is+null")
++}
}|code-block|syntax|javascript|4583501|这是Category类|4583502|import+Gloss

struct+Category:+Decodable+{

++++let+categoryId:+Int?
++++let+name:+String?
++++let+image:+String?

++++init?(json:+JSON)+{
++++++++self.categoryId+=+"categoryId"+<~~+json
++++++++self.name+=+"name"+<~~+json
++++++++self.image+=+"image"+<~~+json
++++}
}|4583503|到目前为止，这是最优雅的解决方案。|4583504|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Alamofire/Alamofire|1|https://github.com/hkellaway/Gloss^0|2|6|9|7|J|9|0|T|5|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]|$9|18|A|19|1|1A]]|E|$]]|$1|F|3|G|5|H|7|1B|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1C|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|1D|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|1E|8|@]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]|Y|$5|T|U|V|E|$W|Z]]]]

For <code>iOS 10</code> &amp; <code>Swift 3</code>, using <a href="https://github.com/Alamofire/Alamofire" rel="noreferrer">Alamofire</a> &amp; <a href="https://github.com/hkellaway/Gloss" rel="noreferrer">Gloss</a>:

<pre><code>Alamofire.request("http://localhost:8080/category/en").responseJSON { response in

if let data = response.data {

 if let categories = [Category].from(data: response.data) {

 self.categories = categories

 self.categoryCollectionView.reloadData()
 } else {

 print("Casting error")
 }
 } else {

 print("Data is null")
 }
}
</code></pre>

and here is the Category class

<pre><code>import Gloss

struct Category: Decodable {

 let categoryId: Int?
 let name: String?
 let image: String?

 init?(json: JSON) {
 self.categoryId = "categoryId" &lt;~~ json
 self.name = "name" &lt;~~ json
 self.image = "image" &lt;~~ json
 }
}
</code></pre>

IMO, this is by far the most elegant solution.

blocks|key|76891|text|您可以使用swift.quicktype.io将JSON转换为struct或class。甚至你也可以提到swift的版本来生成代码。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|76892|JSON示例：|76893|{
++"message":+"Hello,+World!"
}|code-block|syntax|javascript|76894|生成的代码：|76895|import+Foundation

typealias+Sample+=+OtherSample

struct+OtherSample:+Codable+{
++++let+message:+String
}

//+Serialization+extensions

extension+OtherSample+{
++++static+func+from(json:+String,+using+encoding:+String.Encoding+=+.utf8)+->+OtherSample?+{
++++++++guard+let+data+=+json.data(using:+encoding)+else+{+return+nil+}
++++++++return+OtherSample.from(data:+data)
++++}

++++static+func+from(data:+Data)+->+OtherSample?+{
++++++++let+decoder+=+JSONDecoder()
++++++++return+try?+decoder.decode(OtherSample.self,+from:+data)
++++}

++++var+jsonData:+Data?+{
++++++++let+encoder+=+JSONEncoder()
++++++++return+try?+encoder.encode(self)
++++}

++++var+jsonString:+String?+{
++++++++guard+let+data+=+self.jsonData+else+{+return+nil+}
++++++++return+String(data:+data,+encoding:+.utf8)
++++}
}

extension+OtherSample+{
++++enum+CodingKeys:+String,+CodingKey+{
++++++++case+message
++++}
}|76896|entityMap|0|LINK|mutability|MUTABLE|url|http://swift.quicktype.io/^0|O|4|V|6|12|5|5|I|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]]|E|$]]|$1|F|3|G|5|6|7|18|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|19|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1A|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|1B|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]]]

You can use <a href="http://swift.quicktype.io" rel="nofollow noreferrer">swift.quicktype.io</a> for converting <code>JSON</code> to either <code>struct</code> or <code>class</code>. Even you can mention version of swift to genrate code.

Example JSON: 

<pre><code>{
 "message": "Hello, World!"
}
</code></pre>

Generated code:

<pre><code>import Foundation

typealias Sample = OtherSample

struct OtherSample: Codable {
 let message: String
}

// Serialization extensions

extension OtherSample {
 static func from(json: String, using encoding: String.Encoding = .utf8) -&gt; OtherSample? {
 guard let data = json.data(using: encoding) else { return nil }
 return OtherSample.from(data: data)
 }

 static func from(data: Data) -&gt; OtherSample? {
 let decoder = JSONDecoder()
 return try? decoder.decode(OtherSample.self, from: data)
 }

 var jsonData: Data? {
 let encoder = JSONEncoder()
 return try? encoder.encode(self)
 }

 var jsonString: String? {
 guard let data = self.jsonData else { return nil }
 return String(data: data, encoding: .utf8)
 }
}

extension OtherSample {
 enum CodingKeys: String, CodingKey {
 case message
 }
}
</code></pre>

blocks|key|4583580|text|使用SwiftyJSON库，您可以使其类似于|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4583581|if+let+path+:+String+=+Bundle.main.path(forResource:+"tiles",+ofType:+"json")+{
++++if+let+data+=+NSData(contentsOfFile:+path)+{
++++++++let+optData+=+try?+JSON(data:+data+as+Data)
++++++++guard+let+json+=+optData+else+{
++++++++++++return
++++++++}
++++++++for+(_,+object)+in+json+{
++++++++++++let+name+=+object["name"].stringValue
++++++++++++print(name)
++++++++}
++++}
}+|code-block|syntax|javascript|4583582|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/SwiftyJSON/SwiftyJSON^0|2|A|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Using <a href="https://github.com/SwiftyJSON/SwiftyJSON" rel="nofollow noreferrer">SwiftyJSON</a> library, you could make it like 

<pre><code>if let path : String = Bundle.main.path(forResource: "tiles", ofType: "json") {
 if let data = NSData(contentsOfFile: path) {
 let optData = try? JSON(data: data as Data)
 guard let json = optData else {
 return
 }
 for (_, object) in json {
 let name = object["name"].stringValue
 print(name)
 }
 }
} 
</code></pre>

blocks|key|4583610|text|这里有一个示例，可以让事情变得更简单和容易。我的数据库中的字符串数据是一个JSON文件，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4583611|[{"stype":"noun","sdsc":"careless+disregard+for+consequences","swds":"disregard,+freedom,+impulse,+licentiousness,+recklessness,+spontaneity,+thoughtlessness,+uninhibitedness,+unrestraint,+wantonness,+wildness","anwds":"restraint,+self-restraint"},{"stype":"verb","sdsc":"leave+behind,+relinquish","swds":"abdicate,+back+out,+bail+out,+bow+out,+chicken+out,+cop+out,+cut+loose,+desert,+discard,+discontinue,+ditch,+drop,+drop+out,+duck,+dump,+dust,+flake+out,+fly+the+coop,+give+up+the+ship,+kiss+goodbye,+leave,+leg+it,+let+go,+opt+out,+pull+out,+quit,+run+out+on,+screw,+ship+out,+stop,+storm+out,+surrender,+take+a+powder,+take+a+walk,+throw+over,+vacate,+walk+out+on,+wash+hands+of,+withdraw,+yield","anwds":"adopt,+advance,+allow,+assert,+begin,+cherish,+come,+continue,+defend,+favor,+go,+hold,+keep,+maintain,+persevere,+pursue,+remain,+retain,+start,+stay,+support,+uphold"},{"stype":"verb","sdsc":"leave+in+troubled+state","swds":"back+out,+desert,+disown,+forsake,+jilt,+leave,+leave+behind,+quit,+reject,+renounce,+throw+over,+walk+out+on","anwds":"adopt,+allow,+approve,+assert,+cherish,+come,+continue,+defend,+favor,+keep,+pursue,+retain,+stay,+support,+uphold"}]|code-block|syntax|javascript|4583612|要加载此JSON字符串数据，请执行以下简单步骤。首先，为MoreData对象创建一个类，如下所示：|4583613|class++MoreData+{
public+private(set)+var+stype+:+String
public+private(set)+var+sdsc+:+String
public+private(set)+var+swds+:+String
public+private(set)+var+anwds+:+String

init(+stype+:+String,+sdsc+:+String,+swds+:+String,+anwds+:+String)+{

++++self.stype+=+stype
++++self.sdsc+=+sdsc
++++self.swds+=+swds
++++self.anwds+=+anwds
}}|4583614|其次，为我的JSON字符串创建我的字符串扩展，如下所示：|4583615|extension++String+{
func+toJSON()+->+Any?+{
++++guard+let+data+=+self.data(using:+.utf8,+allowLossyConversion:+false)+else+{+return+nil+}
++++return+try?+JSONSerialization.jsonObject(with:+data,+options:+.mutableContainers)
}}|4583616|第三，创建我的Srevices类来处理字符串数据，如下所示：|4583617|class+Services+{
static+let+instance:+Services+=+Services()

func+loadMoreDataByString(byString:+String)+->+[MoreData]{
++++var++myVariable+=+[MoreData]()

++++guard+let+ListOf+=+byString.toJSON()+as?+[[String:+AnyObject]]+else+{+return++[]+}

++++for+object+in+ListOf+{
++++++++let+stype++=+object["stype"]+as?+String+??+""
++++++++let+sdsc++=+object["sdsc"]+as?+String+??+""
+++++++++let+swds++=+object["swds"]+as?+String+??+""
++++++++let+anwds++=+object["anwds"]+as?+String+??+""

++++++++let+myMoreData+=+MoreData(stype+:+stype,+sdsc+:+sdsc,+swds+:+swds,+anwds+:+anwds)
++++++++myVariable.append(myMoreData)
++++}
++++return+myVariable
}}|4583618|最后，从View+Controller调用此函数以加载表视图中的数据，如下所示：|4583619|++++func+handlingJsonStringData(){
++++moreData.removeAll(keepingCapacity:+false)
++++moreData+=++Services.instance.loadMoreDataByString(byString:+jsonString)
++++print(self.moreData.count)
++++tableView.reloadData()
}|4583620|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

Here's a sample for you to make things simpler and easier. My String data in my database is a JSON file that looks like this:

<pre><code>[{"stype":"noun","sdsc":"careless disregard for consequences","swds":"disregard, freedom, impulse, licentiousness, recklessness, spontaneity, thoughtlessness, uninhibitedness, unrestraint, wantonness, wildness","anwds":"restraint, self-restraint"},{"stype":"verb","sdsc":"leave behind, relinquish","swds":"abdicate, back out, bail out, bow out, chicken out, cop out, cut loose, desert, discard, discontinue, ditch, drop, drop out, duck, dump, dust, flake out, fly the coop, give up the ship, kiss goodbye, leave, leg it, let go, opt out, pull out, quit, run out on, screw, ship out, stop, storm out, surrender, take a powder, take a walk, throw over, vacate, walk out on, wash hands of, withdraw, yield","anwds":"adopt, advance, allow, assert, begin, cherish, come, continue, defend, favor, go, hold, keep, maintain, persevere, pursue, remain, retain, start, stay, support, uphold"},{"stype":"verb","sdsc":"leave in troubled state","swds":"back out, desert, disown, forsake, jilt, leave, leave behind, quit, reject, renounce, throw over, walk out on","anwds":"adopt, allow, approve, assert, cherish, come, continue, defend, favor, keep, pursue, retain, stay, support, uphold"}]
</code></pre>

To load this JSON String Data, follow these simple Steps.
First, create a class for my MoreData Object like this:

<pre><code>class MoreData {
public private(set) var stype : String
public private(set) var sdsc : String
public private(set) var swds : String
public private(set) var anwds : String

init( stype : String, sdsc : String, swds : String, anwds : String) {

 self.stype = stype
 self.sdsc = sdsc
 self.swds = swds
 self.anwds = anwds
}}
</code></pre>

Second, create my String extension for my JSON String like this:

<pre><code>extension String {
func toJSON() -&gt; Any? {
 guard let data = self.data(using: .utf8, allowLossyConversion: false) else { return nil }
 return try? JSONSerialization.jsonObject(with: data, options: .mutableContainers)
}}
</code></pre>

Third, create My Srevices Class to handle my String Data like this:

<pre><code>class Services {
static let instance: Services = Services()

func loadMoreDataByString(byString: String) -&gt; [MoreData]{
 var myVariable = [MoreData]()

 guard let ListOf = byString.toJSON() as? [[String: AnyObject]] else { return [] }

 for object in ListOf {
 let stype = object["stype"] as? String ?? ""
 let sdsc = object["sdsc"] as? String ?? ""
 let swds = object["swds"] as? String ?? ""
 let anwds = object["anwds"] as? String ?? ""

 let myMoreData = MoreData(stype : stype, sdsc : sdsc, swds : swds, anwds : anwds)
 myVariable.append(myMoreData)
 }
 return myVariable
}}
</code></pre>

Finally, call this Function from the View Controller to load data in the table view like this:

<pre><code> func handlingJsonStringData(){
 moreData.removeAll(keepingCapacity: false)
 moreData = Services.instance.loadMoreDataByString(byString: jsonString)
 print(self.moreData.count)
 tableView.reloadData()
}
</code></pre>

blocks|key|77003|text|可能是为了帮助别人。类似的例子。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|77004|这是我们绑定数据的Codable类。您可以使用SwiftyJsonAccelerator轻松地创建此类|offset|length|style|CODE|77005|+class+ModelPushNotificationFilesFile:+Codable+{

++enum+CodingKeys:+String,+CodingKey+{
++++case+url
++++case+id
++++case+fileExtension+=+"file_extension"
++++case+name
++}

++var+url:+String?
++var+id:+Int?
++var+fileExtension:+String?
++var+name:+String?

++init+(url:+String?,+id:+Int?,+fileExtension:+String?,+name:+String?)+{
++++self.url+=+url
++++self.id+=+id
++++self.fileExtension+=+fileExtension
++++self.name+=+name
++}

++required+init(from+decoder:+Decoder)+throws+{
++++let+container+=+try+decoder.container(keyedBy:+CodingKeys.self)
++++url+=+try+container.decodeIfPresent(String.self,+forKey:+.url)
++++id+=+try+container.decodeIfPresent(Int.self,+forKey:+.id)
++++fileExtension+=+try+container.decodeIfPresent(String.self,+forKey:+.fileExtension)
++++name+=+try+container.decodeIfPresent(String.self,+forKey:+.name)
++}

}|code-block|syntax|javascript|77006|这是Json字符串|77007|++++let+jsonString+=+"[{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/tulips.png\"},

{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/arctichare.png\"},

{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/serrano.png\"},

{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/peppers.png\"},

{\"name\":\"\",\"file_extension\":\"\",\"id\":10684,\"url\":\"https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/pool.png\"}]"|77008|在这里，我们转换为swift对象。|77009|+++let+jsonData+=+Data(jsonString.utf8)

++++++++let+decoder+=+JSONDecoder()

++++++++do+{
++++++++++++let+fileArray+=+try+decoder.decode([ModelPushNotificationFilesFile].self,+from:+jsonData)
++++++++++++print(fileArray)
++++++++++++print(fileArray[0].url)
++++++++}+catch+{
++++++++++++print(error.localizedDescription)
++++++++}|77010|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/insanoid/SwiftyJSONAccelerator^0|0|9|7|N|L|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|13|8|@$D|14|E|15|F|G]]|9|@$D|16|E|17|1|18]]|A|$]]|$1|H|3|I|5|J|7|19|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1A|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|1B|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|1C|8|@]|9|@]|A|$]]|$1|S|3|T|5|J|7|1D|8|@]|9|@]|A|$K|L]]|$1|U|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]]]

It might be help someone. Similar example.
This is our <code>Codable</code> class to bind data. You can easily create this class using <a href="https://github.com/insanoid/SwiftyJSONAccelerator" rel="nofollow noreferrer">SwiftyJsonAccelerator</a>
<pre><code> class ModelPushNotificationFilesFile: Codable {

 enum CodingKeys: String, CodingKey {
 case url
 case id
 case fileExtension = &quot;file_extension&quot;
 case name
 }

 var url: String?
 var id: Int?
 var fileExtension: String?
 var name: String?

 init (url: String?, id: Int?, fileExtension: String?, name: String?) {
 self.url = url
 self.id = id
 self.fileExtension = fileExtension
 self.name = name
 }

 required init(from decoder: Decoder) throws {
 let container = try decoder.container(keyedBy: CodingKeys.self)
 url = try container.decodeIfPresent(String.self, forKey: .url)
 id = try container.decodeIfPresent(Int.self, forKey: .id)
 fileExtension = try container.decodeIfPresent(String.self, forKey: .fileExtension)
 name = try container.decodeIfPresent(String.self, forKey: .name)
 }

}
</code></pre>
This is Json String
<pre><code> let jsonString = &quot;[{\&quot;name\&quot;:\&quot;\&quot;,\&quot;file_extension\&quot;:\&quot;\&quot;,\&quot;id\&quot;:10684,\&quot;url\&quot;:\&quot;https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/tulips.png\&quot;},

{\&quot;name\&quot;:\&quot;\&quot;,\&quot;file_extension\&quot;:\&quot;\&quot;,\&quot;id\&quot;:10684,\&quot;url\&quot;:\&quot;https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/arctichare.png\&quot;},

{\&quot;name\&quot;:\&quot;\&quot;,\&quot;file_extension\&quot;:\&quot;\&quot;,\&quot;id\&quot;:10684,\&quot;url\&quot;:\&quot;https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/serrano.png\&quot;},

{\&quot;name\&quot;:\&quot;\&quot;,\&quot;file_extension\&quot;:\&quot;\&quot;,\&quot;id\&quot;:10684,\&quot;url\&quot;:\&quot;https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/peppers.png\&quot;},

{\&quot;name\&quot;:\&quot;\&quot;,\&quot;file_extension\&quot;:\&quot;\&quot;,\&quot;id\&quot;:10684,\&quot;url\&quot;:\&quot;https:\\/\\/homepages.cae.wisc.edu\\/~ece533\\/images\\/pool.png\&quot;}]&quot;
</code></pre>
Here we convert to swift object.
<pre><code> let jsonData = Data(jsonString.utf8)

 let decoder = JSONDecoder()

 do {
 let fileArray = try decoder.decode([ModelPushNotificationFilesFile].self, from: jsonData)
 print(fileArray)
 print(fileArray[0].url)
 } catch {
 print(error.localizedDescription)
 }
</code></pre>

blocks|key|4583672|text|将json包装在多行字符串文字中，并尝试像这样解析：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4583673|import+Foundation

//+MARK:+-+DemoJSON
struct+DemoJSON:+Codable+{
++++let+menu:+Menu
}

//+MARK:+-+Menu
struct+Menu:+Codable+{
++++let+id,+value:+String
++++let+popup:+Popup
}

//+MARK:+-+Popup
struct+Popup:+Codable+{
++++let+menuitem:+[Menuitem]
}

//+MARK:+-+Menuitem
struct+Menuitem:+Codable+{
++++let+value,+onclick:+String
}



///+Make+Network+Request
typealias+RequestCompletionHandler<T:+Decodable>+=+(_+value:+T?,+_+error:+Error?)+->+Void


func+callAPI<T:+Decodable>(completionHandler:+RequestCompletionHandler<T>)+{
++++let+data+=+"""
{"menu":+{
++"id":+"file",
++"value":+"File",
++"popup":+{
++++"menuitem":+[
++++++{"value":+"New",+"onclick":+"CreateNewDoc()"},
++++++{"value":+"Open",+"onclick":+"OpenDoc()"},
++++++{"value":+"Close",+"onclick":+"CloseDoc()"}
++++]
++}
}}
""".data(using:+.utf8)!
++++do+{
++++++++let+value+=+try+JSONDecoder().decode(T.self,+from:+data)
++++++++completionHandler(value,+nil)
++++}+catch+{
++++++++completionHandler(nil,+error)
++++}
}

callAPI+{+(model:+DemoJSON?,+error)+in
++++if+let+demoModel+=+model+{
++++++++print("Success:+\(demoModel)")
++++}+else+if+let+error+=+error+{
++++++++print("Error:+\(error)")
++++}
}|code-block|syntax|javascript|4583674|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Wrap the json in the multiline string literal and try to parse like this:
<pre><code>import Foundation

// MARK: - DemoJSON
struct DemoJSON: Codable {
 let menu: Menu
}

// MARK: - Menu
struct Menu: Codable {
 let id, value: String
 let popup: Popup
}

// MARK: - Popup
struct Popup: Codable {
 let menuitem: [Menuitem]
}

// MARK: - Menuitem
struct Menuitem: Codable {
 let value, onclick: String
}



/// Make Network Request
typealias RequestCompletionHandler&lt;T: Decodable&gt; = (_ value: T?, _ error: Error?) -&gt; Void


func callAPI&lt;T: Decodable&gt;(completionHandler: RequestCompletionHandler&lt;T&gt;) {
 let data = &quot;&quot;&quot;
{&quot;menu&quot;: {
 &quot;id&quot;: &quot;file&quot;,
 &quot;value&quot;: &quot;File&quot;,
 &quot;popup&quot;: {
 &quot;menuitem&quot;: [
 {&quot;value&quot;: &quot;New&quot;, &quot;onclick&quot;: &quot;CreateNewDoc()&quot;},
 {&quot;value&quot;: &quot;Open&quot;, &quot;onclick&quot;: &quot;OpenDoc()&quot;},
 {&quot;value&quot;: &quot;Close&quot;, &quot;onclick&quot;: &quot;CloseDoc()&quot;}
 ]
 }
}}
&quot;&quot;&quot;.data(using: .utf8)!
 do {
 let value = try JSONDecoder().decode(T.self, from: data)
 completionHandler(value, nil)
 } catch {
 completionHandler(nil, error)
 }
}

callAPI { (model: DemoJSON?, error) in
 if let demoModel = model {
 print(&quot;Success: \(demoModel)&quot;)
 } else if let error = error {
 print(&quot;Error: \(error)&quot;)
 }
}
</code></pre>

I have been searching for days to convert a fairly simple JSON string to an object type in Swift but with no avail. 

Here is the code for web service call:

<pre><code>func GetAllBusiness() {

 Alamofire.request(.GET, "http://MyWebService/").responseString { (request, response, string, error) in

 println(string)

 }
}
</code></pre>

I have a swift struct Business.swift:

<pre><code>struct Business {
 var Id : Int = 0
 var Name = ""
 var Latitude = ""
 var Longitude = ""
 var Address = ""
}
</code></pre>

Here is my test service deployed: 

<pre><code>[
 {
 "Id": 1,
 "Name": "A",
 "Latitude": "-35.243256",
 "Longitude": "149.110701",
 "Address": null
 },
 {
 "Id": 2,
 "Name": "B",
 "Latitude": "-35.240592",
 "Longitude": "149.104843",
 "Address": null
 }
 ...
]
</code></pre>

It would be a delight if someone guide me through this.

Thanks.

Simple and clean way to convert JSON string to Object in Swift

测试服务

数据库

Swift

JSON

几天来，我一直在寻找在Swift中将一个相当简单的JSON字符串转换为对象类型，但没有结果。以下是web服务调用的代码：func GetAllBusiness() {        Alamofire.request(.GET, "http://MyWebService/").responseString { (req...

问在Swift中将JSON字符串转换为对象的简单明了的方法
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