XCode自带解析SAX解析

#import "XMLViewController.h"
#import "Student.h"
@interface XMLViewController ()<NSXMLParserDelegate>
@property (strong,nonatomic) NSMutableArray *stuArray;
@property (strong,nonatomic) Student *student;
@property (strong,nonatomic) NSString *value;
@end

@implementation XMLViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}
- (IBAction)didClickParserButtonAction:(UIButton *)sender {
    NSData *xmlData = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"XML_stu" ofType:@"txt"]];
    //创建SAX解析工具NSXMLParser
    NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithData:xmlData];
    //设置代理
    xmlParser.delegate = self;
    //开始解析
    [xmlParser parse];
}
//开始解析 XML 文档
-(void)parserDidStartDocument:(NSXMLParser *)parser
{
    NSLog(@"开始文档");
    //初始化数组
    self.stuArray = [NSMutableArray new];
}

//找到一个节点(找到一个开始标签)
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary<NSString *,NSString *> *)attributeDict
{
    NSLog(@"开始标签");
    if ([elementName isEqualToString:@"student"]) {
       self.student = [[Student alloc] init];
        
    }
}

//获得标签内容
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
    NSLog(@"获取内容:%@",string);
    self.value = string;
}


//找到一个结束标签
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
    NSLog(@"结束标签");
    //KVC 赋值
    [self.student setValue:self.value forKey:elementName];
    
    //若student标签结束,添加到数组
    if ([elementName isEqualToString:@"student"]) {
        [self.stuArray addObject:self.student];
    }
}
//结束解析XML文档
-(void)parserDidEndDocument:(NSXMLParser *)parser
{
    NSLog(@"结束文档");
    NSLog(@"%@",self.stuArray);
}
//解析出错
-(void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
{
    NSLog(@"解析出错:%@",parseError);
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}



@end