xml数据的解析

首先创建一个xml文件

<data><person age = "15">ZhangSan</person><person age = "2">jikexueyuan</person><a><b>    <c>    </c></b></a></data>

将xml数据文件导入到文件列表中
随后再代码中 创建xml的解析对象 通知其代理 随后开始解析

import UIKitclass ViewController: UIViewController,NSXMLParserDelegate{    override func viewDidLoad() {        super.viewDidLoad()        // Do any additional setup after loading the view, typically from a nib.    //创建xml的解析对象         var parser = NSXMLParser(contentsOfURL: NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("data", ofType: "xml")!))    //通知代理        parser?.delegate = self        //开始解析        parser?.parse()    }    override func didReceiveMemoryWarning() {        super.didReceiveMemoryWarning()        // Dispose of any resources that can be recreated.    }//实现代理的方法 来解析数据    var currentNodeName:String?    func parser(parser: NSXMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String]) {        //获得名字        print(elementName)        currentNodeName = elementName        //获得属性        if elementName == "person"{            //为了以防有的对象没有age的属性 则要对其进行判断 有没有age的属性                     if  let  age = attributeDict["age"] {            print("age:\(age)")    }    }}    //查找当前内容    func parser(parser: NSXMLParser, foundCharacters string: String) {        //避免空格符号的出现        var str = string.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())        if str != "" {            print("current Node : \(currentNodeName) value is \(str)")        }    }    }

查找到的信息如下所示

age:15

current Node : Optional("person") value is ZhangSan

person

age:2

current Node : Optional("person") value is jikexueyuan

a

b

c

data

person

age:15

current Node : Optional("person") value is ZhangSan

person

age:2

current Node : Optional("person") value is jikexueyuan

a

b

c