Swift基础－－解析服务器Json内容

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////  ViewController.swift//  JieParseJson////  Created by jiezhang on 14-10-5.//  Copyright (c) 2014年 jiezhang. All rights reserved.//import UIKitclass ViewController: UIViewController {                                @IBOutlet weak var city: UILabel!    @IBOutlet weak var cityid: UILabel!    @IBOutlet weak var temp1: UILabel!    @IBOutlet weak var temp2: UILabel!    @IBOutlet weak var weather: UILabel!    @IBOutlet weak var img1: UILabel!    @IBOutlet weak var img2: UILabel!    @IBOutlet weak var ptime: UILabel!            override func viewDidLoad() {        super.viewDidLoad()    }    override func didReceiveMemoryWarning() {        super.didReceiveMemoryWarning()            }        func getWeather()    {        var url = NSURL(string: "http://www.weather.com.cn/data/cityinfo/101010100.html")        var data = NSData(contentsOfURL: url)        var str = NSString(data: data, encoding: NSUTF8StringEncoding)        println(str)        var json : AnyObject! = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.AllowFragments, error: nil)        let weatherinfo: AnyObject = json.objectForKey("weatherinfo")!        city.text = weatherinfo.objectForKey("city") as String        cityid.text = weatherinfo.objectForKey("cityid") as String        temp1.text = weatherinfo.objectForKey("temp1") as String        temp2.text = weatherinfo.objectForKey("temp2") as String        weather.text = weatherinfo.objectForKey("weather") as String        img1.text = weatherinfo.objectForKey("img1") as String        img2.text = weatherinfo.objectForKey("img2") as String        ptime.text = weatherinfo.objectForKey("ptime") as String    }    @IBAction func updateWeather(sender: AnyObject) {        getWeather()    }}

当时想显示图片来，但是返回的图片是假的，我查看了页面，<big class="jpg80 n01"></big>在css里面是这样的

big.jpg80{background-image:url(../../i/weather2014/jpg/gray80.jpg);height:80px;width:80px}.on big.jpg30{background-image:url(../../i/weather2014/jpg/white30.jpg);height:30px;width:31px}.on big.jpg50{background-image:url(../../i/weather2014/jpg/blue50.jpg);height:50px;width:50px}.on big.jpg80{background-image:url(../../i/weather2014/jpg/blue80.jpg);height:80px;width:80px}.sk big.jpg80{background-image:url(../../i/weather2014/jpg/blue80.jpg);height:80px;width:80px}

所以真实地址：http://i.tq121.com.cn/i/weather2014/jpg/blue80.jpg,打开后是一组图片，像下面的,在网站上看到的都是用css切割出来的。

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