iPhoneiOS JSON解析教程[关闭]

为什么使用JSON

JSON解析方法

使用NSJSONSerialization解析JSON

Swift
let JSonString = """
{
  "name": "John",
  "age": 30,
  "city": "New York"
}
let JSonData = JSonString.data(using: .utf8)
do {
    if let JSon = try JSONSerialization.JSonObject(with: JSonData!, options: []) as? [String: Any] {
        let name = JSon["name"] as? String
        let age = JSon["age"] as? Int
        let city = JSon["city"] as? String
        
        print("Name: \(name ?? "")")
        print("Age: \(age ?? 0)")
        print("City: \(city ?? "")")
    }
} catch {
    print("JSON parsing error: \(error.localizedDescription)")
}

使用SwiftyJSON解析JSON

Swift
import SwiftyJSON
let JSonString = """
{
  "name": "John",
  "age": 30,
  "city": "New York"
}
if let JSonData = JSonString.data(using: .utf8) {
    let JSon = try! JSON(data: JSonData)
    
    let name = JSon["name"].stringValue
    let age = JSon["age"].intValue
    let city = JSon["city"].stringValue
    
    print("Name: \(name)")
    print("Age: \(age)")
    print("City: \(city)")
}