Oc NSXMLParse(SAX)解析表格

手写xml文件

<?xml version="1.0" encoding="utf-8"?>
<root>
    <hero>
            <name>赏金猎人</name>
            <like>枪林弹雨</like>
    </hero>
    <hero>
            <name>提莫</name>
            <like>老司机</like>
    </hero>
    <hero>
            <name>流浪</name>
            <like>禁锢</like>
    </hero>
</root>

Model类
Hero.h

#import <Foundation/Foundation.h>

@interface Hero : NSObject
@property (nonatomic,strong)NSString *name,*like;
@end

控制器类
ViewController.m

#import "ViewController.h"
#import "Hero.h"
@interface ViewController ()<NSXMLParserDelegate,UITableViewDelegate,UITableViewDataSource>
{
    NSMutableArray *_arr;
    //记录开始标签的名字
    NSString *_newElementName;
    //英雄的对象
    Hero *myHero;
    UITableView *_table;
}
@end

#define TEST_URL @"http://127.0.0.1/text.xml"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    NSURL *url = [NSURL URLWithString:TEST_URL];
    NSURLRequest *reqeust = [[NSURLRequest alloc]initWithURL:url];
    NSData *data = [NSURLConnection sendSynchronousRequest:reqeust returningResponse:nil error:nil];
    //sax解析
    NSXMLParser *parser = [[NSXMLParser alloc]initWithData:data];
    //设置代理
    parser.delegate = self;
    //开始解析
    [parser parse];
    
    _table = [[UITableView alloc]initWithFrame:CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height)];
    _table.delegate = self;
    _table.dataSource = self;
    [self.view addSubview:_table];
    
    
}
//开始解析自动回调
- (void)parserDidStartDocument:(NSXMLParser *)parser{
    //初始化数组
    _arr = [[NSMutableArray alloc]init];
}

//遇到开始标签自动回调
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(nullable NSString *)namespaceURI qualifiedName:(nullable NSString *)qName attributes:(NSDictionary<NSString *, NSString *> *)attributeDict{
    //如果开始标签是hero 则初始化Hero对象
    if ([elementName isEqualToString:@"hero"]) {
        //初始化hero对象
        myHero = [[Hero alloc]init];
        //将myHero对象添加到数组中
        [_arr addObject:myHero];
    }
    //记录开始标签的名字
    _newElementName = elementName;
}
//遇到内容自动回调 在解析过程中遇到空格或者回车都会被当做内容调用该方法
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
    //如果开始标签是name则把获得到的内容赋值给hero的name
    if ([_newElementName isEqualToString:@"name"]) {
        myHero.name = string;
    }else if([_newElementName isEqualToString:@"like"]){
        myHero.like = string;
    }
}
//遇到结束标签自动回调
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(nullable NSString *)namespaceURI qualifiedName:(nullable NSString *)qName{
    
    _newElementName = nil;
}


//解析结束自动回调
- (void)parserDidEndDocument:(NSXMLParser *)parser{
    
//刷新表格
    [_table reloadData];
}


-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    
    return _arr.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    static NSString *cellId = @"cellid";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellId];
    if (!cell) {
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellId];
    }
    cell.textLabel.text = [[_arr objectAtIndex:indexPath.row] name];
    cell.detailTextLabel.text = [[_arr objectAtIndex:indexPath.row] like];
    return cell;
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end