一，使用自带的NSJSONSerialization
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import UIKitclass ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. var label:UILabel = UILabel(frame:CGRectMake(100, 100,300,100)); label.text = "输出结果在控制台" self.view.addSubview(label) //测试结果在output终端输入，也可以建个命令行应用测试就可以了 testJson() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } //测试json func testJson() { //Swift对象 let user = [ "uname": "张三", "tel": ["mobile": "138", "home": "010"] ] //首先判断能不能转换 if (!NSJSONSerialization.isValidJSONObject(user)) { println("is not a valid json object") return } //利用OC的json库转换成OC的NSData， //如果设置options为NSJSONWritingOptions.PrettyPrinted，则打印格式更好阅读 let data : NSData! = NSJSONSerialization.dataWithJSONObject(user, options: nil, error: nil) //NSData转换成NSString打印输出 let str = NSString(data:data, encoding: NSUTF8StringEncoding) //输出json字符串 println("Json Str:"); println(str) //把NSData对象转换回JSON对象 let json : AnyObject! = NSJSONSerialization .JSONObjectWithData(data, options:NSJSONReadingOptions.AllowFragments, error:nil) println("Json Object:"); println(json) //验证JSON对象可用性 let uname : AnyObject = json.objectForKey("uname")! let mobile : AnyObject = json.objectForKey("tel")!.objectForKey("mobile")! println("get Json Object:"); println("uname: \(uname), mobile: \(mobile)") }} |
输出结果如下：
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Json Str:Optional({"uname":"张三","tel":{"home":"010","mobile":"138"}})Json Object:{ tel = { home = 010; mobile = 138; }; uname = "\U5f20\U4e09";}get Json Object:uname: 张三, mobile: 138 |
二，使用第三方库 - JSONKit
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#include "JSONKit.h" |
2，将JSONKit的库文件导入到项目中来（JSONKit.h和JSONKit.m）
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import UIKitclass ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. testJson() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } func testJson() { //Swift 字典对象 let user = [ "uname": "user1", "tel": ["mobile": "138", "home": "010"] ] //使用 JSONKit 转换成为 JSON 字符串 var jsonstring = (user as NSDictionary).JSONString() println(jsonstring); //由字符串反解析回字典 println(jsonstring.objectFromJSONString() as NSDictionary) //使用 JSONKit 转换成为 NSData 类型的 JSON 数据 var jsondata = (user as NSDictionary).JSONData() println(jsondata); //由NSData 反解析回为字典 println(jsondata.objectFromJSONData() as NSDictionary) }} |
输出结果：
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{"uname":"user1","tel":{"home":"010","mobile":"138"}}{ tel = { home = 010; mobile = 138; }; uname = user1;}<7b22756e 616d6522 3a227573 65723122 2c227465 6c223a7b 22686f6d 65223a22 30313022 2c226d6f 62696c65 223a2231 3338227d 7d>{ tel = { home = 010; mobile = 138; }; uname = user1;} |
Swift - 解析JSON数据（内置NSJSONSerialization与第三方JSONKit）
原文：http://www.cnblogs.com/Free-Thinker/p/4838370.html