XML_DOM和XML_SAX数据解析(初学)
方法一：XML_DOMXML_DOM数据解析
1 //DOM树状解析 一个个节点解析 2 3 /* 4 GData的抓准备工作 5 1.导入动态库： libxml2.dylib 6 2.在buid setting 里面搜索 header search paths ，添加//usr/include/libxm2 7 3.在buid setting 里面搜索 other linker flags ,添加 -lxml2 8 4.GData 和 JSONKit 都是MRC下的，如果想在ARC下使用 ，加上一句修饰 -font object ****** 9 */ 10 11 12 // XML DOM解析 13 14 //1.获取XML路径 15 16 NSString *fielPath = [[NSBundle mainBundle]pathForResource:@"Student.xml" ofType:nil]; 17 18 //2.将XML文件转成字符串 19 NSError *error = nil ; 20 NSString *xmlString = [[NSString alloc]initWithContentsOfFile:fielPath encoding:NSUTF8StringEncoding error:&error]; 21 22 //3.讲XML字符串转化为XML类型的数据 23 GDataXMLDocument *document = [[GDataXMLDocument alloc]initWithXMLString:xmlString options:0 error:&error]; 24 25 //4.获取根节点 26 GDataXMLElement *rootElement = [document rootElement]; 27 28 //5.根据标签节点名字来取(一层层取) 29 NSArray *studentArray = [rootElement elementsForName:@"student"]; 30 31 self.dataArray = [NSMutableArray array]; 32 33 for (int i = 0; i < studentArray.count; i ++) { 34 35 Student *student = [[Student alloc]init]; 36 37 GDataXMLElement *element = studentArray[i]; 38 39 NSArray *nameArray = [element elementsForName:@"name"]; 40 41 student.name = [nameArray[0] stringValue]; 42 43 NSArray *ageArray = [element elementsForName:@"age"]; 44 student.age = [ageArray[0] stringValue]; 45 46 NSArray *sexArray = [element elementsForName:@"sex"]; 47 student.sex = [sexArray[0] stringValue]; 48 49 [self.dataArray addObject:student]; 50 } 51 52 53
方法二：XML_SAX数据解析
1 #import "MainViewController.h" 2 #import "Student.h" 3 @interface MainViewController ()<NSXMLParserDelegate> 4 5 @property (nonatomic,retain) NSMutableArray *dataArray ; 6 7 //记录当前解析的节点标签的名字 8 @property (nonatomic,retain) NSString *currenElementName ; 9 10 @property (nonatomic,retain) Student *student ; 11 12 @end 13 14 @implementation MainViewController 15 16 -(void)dealloc{ 17 [_currenElementName release]; 18 [_student release]; 19 [_dataArray release]; 20 [super dealloc]; 21 } 22 23 - (void)viewDidLoad { 24 [super viewDidLoad]; 25 // Do any additional setup after loading the view. 26 27 28 //SAX 29 30 //1.获取路径 31 32 NSString *fielPath = [[NSBundle mainBundle]pathForResource:@"Student.xml" ofType:nil]; 33 34 //2.转化为xml为二进制数据 35 NSData *data = [NSData dataWithContentsOfFile:fielPath]; 36 37 //3.利用系统的SAX 解析 38 NSXMLParser *parser = [[NSXMLParser alloc]initWithData:data]; 39 40 //4.指定代理 使用代理方法 41 parser.delegate = self ; 42 43 self.dataArray = [NSMutableArray array]; 44 45 //开始解析数据 46 [parser parse]; 47 48 49 50 51 52 } 53 54 55 -(void)parserDidStartDocument:(NSXMLParser *)parser{ 56 57 NSLog(@"开始解析"); 58 59 // self.currenElementName = nil ; 60 } 61 62 63 64 //开始解析某个标签 65 - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{ 66 67 NSLog(@"开始解析标签%@",elementName); 68 69 self.currenElementName = elementName ; 70 71 72 73 } 74 75 //取值方法 76 -(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string 77 { 78 79 NSLog(@"取到的值：%@",string); 80 81 if ([self.currenElementName isEqualToString:@"student"]) { 82 self.student = [[Student alloc]init]; 83 84 } 85 86 if ([self.currenElementName isEqualToString:@"name"] && 87 self.student.name == nil) { 88 self.student.name = string ; 89 } 90 91 if ([self.currenElementName isEqualToString:@"age"] && 92 self.student.age == nil) { 93 self.student.age = string ; 94 } 95 96 if ([self.currenElementName isEqualToString:@"sex"] && 97 self.student.sex == nil) { 98 self.student.sex = string ; 99 } 100 101 102 } 103 104 //结束某个标签 105 -(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName 106 { 107 if ([elementName isEqualToString:@"student"]) { 108 109 [self.dataArray addObject:self.student]; 110 111 self.student = nil ; 112 } 113 114 NSLog(@"结束节点 %@",elementName); 115 116 } 117 118 //结束整个文件解析 119 -(void)parserDidEndDocument:(NSXMLParser *)parser{ 120 121 NSLog(@"解析完成"); 122 }
