Swift学习笔记（2）网络数据交换格式（XML，JSON）解析 [iOS实战 入门与提高卷]

NSXML是iOS SDK自带的，也是苹果默认的解析框架，框架的核心是NSXMLParser和它的委托协议NSXMLParserDelegate。

let path=NSBundle.mainBundle().pathForResource("Notes", ofType: "xml")! let url=NSURL(fileURLWithPath: path) //开始解析 let parser=NSXMLParser(contentsOfURL: url)! parser.delegate=self parser.parse() //文档开始时触发 func parserDidStartDocument(parser: NSXMLParser) { self.notes=NSMutableArray() //文档出错时触发 func parser(parser: NSXMLParser, parseErrorOccurred parseError: NSError) { NSLog("%@", parseError) //遇到一个开始标签时触发，其中namespaceURI是命名空间，qualifiedName是限定名，attributes是字典属性集合 func parser(parser: NSXMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String]) { self.currentTagName=elementName if self.currentTagName == "Note"{ let id=attributeDict["id"]! as NSString let dict=NSMutableDictionary() dict.setObject(id, forKey: "id") self.notes.addObject(dict) //遇到字符串时触发 func parser(parser: NSXMLParser, foundCharacters string: String) { //去除空格和回车 let s1 = string.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet()) if s1 == ""{ return let dict = self.notes.lastObject as! NSMutableDictionary if (self.currentTagName == "CDate"){ dict.setObject(string, forKey: "CDate") if (self.currentTagName == "Content"){ dict.setObject(string, forKey: "Content") if (self.currentTagName == "UserID"){ dict.setObject(string, forKey: "UserID") //遇到结束标签时触发 func parser(parser: NSXMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) { self.currentTagName=nil //文档结束时触发 func parserDidEndDocument(parser: NSXMLParser) { NSLog("end parse") NSLog("\(notes)") }
super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. let parser=XMLParser() parser.startParse()

2016-05-17 12:03:42.836 XMLTest[61377:445073] start parse

2016-05-17 12:03:42.852 XMLTest[61377:445073] end parse

2016-05-17 12:03:42.853 XMLTest[61377:445073] (

 CDate = "2014-12-21";

 Content = "\U65e9\U4e0a8\U70b9\U949f\U5230\U516c\U53f8";

 UserID = tony;

 id = 1;

 CDate = "2014-12-22";

 Content = "\U53d1\U5e03iOSBook1";

 UserID = tony;

 id = 2;

 CDate = "2014-12-23";

 Content = "\U53d1\U5e03iOSBook2";

 UserID = tony;

 id = 3;

 CDate = "2014-12-24";

 Content = "\U53d1\U5e03iOSBook3";

 UserID = tony;

 id = 4;

 CDate = "2014-12-25";

 Content = "\U53d1\U5e032016\U5965\U8fd0\U4f1a\U5e94\U7528iPhone\U7248\U672c";

 UserID = tony;

 id = 5;

 CDate = "2014-12-26";

 Content = "\U53d1\U5e032016\U5965\U8fd0\U4f1a\U5e94\U7528iPad\U7248\U672c";

 UserID = tony;

 id = 6;

下载完成后将TBXML-Headers和TBXML-Code文件夹添加到工程中，并添加以下Framewok和库

在Xcode6以后的版本，需要创建PrefixHeader.pch文件

并选择TARGETS- 工程名- Buil Setting- Apple LLVM x.x Language - Prefix Header，输入PrefixHeader.pch

在PrefixHeader.pch中添加以下代码

//查找root元素下的Note元素 var noteElement=TBXML.childElementNamed("Note", parentElement: root) while noteElement != nil{ let dict=NSMutableDictionary() //查找Note元素下的CDate元素 let CDateElemet=TBXML.childElementNamed("CDate", parentElement: noteElement) if CDateElemet != nil{ let CDate=TBXML.textForElement(CDateElemet) dict.setValue(CDate, forKey: "CDate") //查找Note元素下的Content元素 let ContentElemet=TBXML.childElementNamed("Content", parentElement: noteElement) if ContentElemet != nil{ let Content=TBXML.textForElement(ContentElemet) dict.setValue(Content, forKey: "Content") //查找Note元素下的UserID元素 let UserIDElemet=TBXML.childElementNamed("UserID", parentElement: noteElement) if UserIDElemet != nil{ let UserID=TBXML.textForElement(UserIDElemet) dict.setValue(UserID, forKey: "UserID") //获取Note元素的id属性值 let id=TBXML.valueOfAttributeNamed("id", forElement: noteElement) dict.setValue(id, forKey: "id") self.notes.addObject(dict) //获取同层的下一个Note元素 noteElement=TBXML.nextSiblingNamed("Note", searchFromElement: noteElement) NSLog("end parse") NSLog("\(notes)") self.notes=nil

{"ResultCode":0,"Record":[

{"ID":"1","CDate":"2014-12-23","Content":"发布iOSBook0","UserID":"tony"},

{"ID":"2","CDate":"2014-12-24","Content":"发布iOSBook1","UserID":"tony"},

{"ID":"3","CDate":"2014-12-25","Content":"发布iOSBook2","UserID":"tony"},

{"ID":"4","CDate":"2014-12-26","Content":"发布iOSBook3","UserID":"tony"},

{"ID":"5","CDate":"2014-12-27","Content":"发布iOSBook4","UserID":"tony"},

{"ID":"6","CDate":"2014-12-28","Content":"发布iOSBook5","UserID":"tony"},

{"ID":"7","CDate":"2014-12-29","Content":"发布iOSBook6","UserID":"tony"},

{"ID":"8","CDate":"2014-12-30","Content":"发布iOSBook7","UserID":"tony"},

{"ID":"9","CDate":"2014-12-31","Content":"发布iOSBook8","UserID":"tony"},

{"ID":"10","CDate":"2014-12-32","Content":"发布iOSBook9","UserID":"tony"},

{"ID":"11","CDate":"2014-12-33","Content":"发布iOSBook10","UserID":"tony"},

{"ID":"12","CDate":"2014-12-34","Content":"发布iOSBook11","UserID":"tony"},

{"ID":"13","CDate":"2014-12-35","Content":"发布iOSBook12","UserID":"tony"},

{"ID":"14","CDate":"2014-12-36","Content":"发布iOSBook13","UserID":"tony"},

{"ID":"15","CDate":"2014-12-37","Content":"发布iOSBook14","UserID":"tony"},

{"ID":"16","CDate":"2014-12-38","Content":"发布iOSBook15","UserID":"tony"},

{"ID":"17","CDate":"2014-12-39","Content":"发布iOSBook16","UserID":"tony"},

{"ID":"18","CDate":"2014-12-40","Content":"发布iOSBook17","UserID":"tony"},

{"ID":"19","CDate":"2014-12-41","Content":"发布iOSBook18","UserID":"tony"},

{"ID":"20","CDate":"2014-12-42","Content":"发布iOSBook19","UserID":"tony"},

{"ID":"21","CDate":"2014-12-43","Content":"发布iOSBook20","UserID":"tony"},

{"ID":"22","CDate":"2014-12-44","Content":"发布iOSBook21","UserID":"tony"}]}

super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. let path=NSBundle.mainBundle().pathForResource("Notes", ofType: "json")! let jsonData=NSData(contentsOfFile: path)! //MutableContainers指定解析返回的是可变的数组或字典 let jsonObj:NSDictionary=(try? NSJSONSerialization.JSONObjectWithData(jsonData, options: NSJSONReadingOptions.MutableContainers)) as! NSDictionary self.objects=jsonObj.objectForKey("Record") as! NSMutableArray NSLog("\(self.objects)") override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated.