iOS--XML三种解析方法（ XMLDictionary）、（GDataXMLNode）、（NSXMLParser）

iOS9之后，默认网络请求是https，所有我们要设置一下网络安全，具体设置如下

1.第三方类库 XMLDictionary

下载地址：

https://github.com/nicklockwood/XMLDictionary

 

所用到的xml文件

http://www.meituan.com/api/v1/divisions?mtt=1.help%2Fapi.0.0.im7eandj

效果如下：

代码实现：

根视图：

rootTableViewController.m文件

#import "rootTableViewController.h"
#import "XMLDictionary.h"
#import "secondViewController.h"
@interface rootTableViewController ()
@property(nonatomic,strong)NSArray *cityArr;
@end

@implementation rootTableViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    NSString *path=@"http://www.meituan.com/api/v1/divisions?mtt=1.help%2Fapi.0.0.im77fqda";

    NSURL *url=[NSURL URLWithString:path];

    NSData *data=[NSData dataWithContentsOfURL:url];

    XMLDictionaryParser *parser=[[XMLDictionaryParser alloc]init];
    NSDictionary *dic=[parser dictionaryWithData:data];
    self.cityArr=[NSArray arrayWithArray:dic[@"divisions"][@"division"]];

    NSLog(@"%@",self.cityArr);
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"reuseIdentifier"];

    self.title=@"城市列表";

    // Uncomment the following line to preserve selection between presentations.
    // self.clearsSelectionOnViewWillAppear = NO;

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
//     self.navigationItem.rightBarButtonItem = self.editButtonItem;

}

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

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.cityArr.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"reuseIdentifier" forIndexPath:indexPath];

    cell.textLabel.text=self.cityArr[indexPath.row][@"name"];
    return cell;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(nonnull NSIndexPath *)indexPath{
    secondViewController *sec=[[secondViewController alloc]init];
    sec.location=self.cityArr[indexPath.row][@"location"];
    sec.title=self.cityArr[indexPath.row][@"name"];
    [self.navigationController pushViewController:sec animated:YES];

}

@end

第二个视图：secondViewController.h

#import <UIKit/UIKit.h>

@interface secondViewController : UIViewController
@property(nonatomic,strong)NSDictionary *location;
@property(nonatomic,strong)NSString *title;

@end

secondViewController.m文件

#import "secondViewController.h"

@interface secondViewController ()
@property(nonatomic,strong)UILabel *latitudeName;
@property(nonatomic,strong)UILabel *longitudeName;
@property(nonatomic,strong)UILabel *timezoneName;
@property(nonatomic,strong)UILabel *latitude;
@property(nonatomic,strong)UILabel *longitude;
@property(nonatomic,strong)UILabel *timezone;
@end

@implementation secondViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self setKongjian];

    self.title=[NSString stringWithFormat:@"%@的经纬度",self.title];

    self.view.backgroundColor=[UIColor colorWithRed:0.148 green:1.000 blue:0.946 alpha:1.000];

}
-(void)setKongjian{
    self.latitudeName=[[UILabel alloc]initWithFrame:CGRectMake(100, 200, 100, 30)];
    self.latitudeName.text=@"纬度:";
    self.latitude=[[UILabel alloc]initWithFrame:CGRectMake(150, 200, 200, 30)];
    self.latitude.text=self.location[@"latitude"];

    self.longitudeName=[[UILabel alloc]initWithFrame:CGRectMake(100, 250, 100, 30)];
    self.longitudeName.text=@"经度:";
    self.longitude=[[UILabel alloc]initWithFrame:CGRectMake(150, 250, 200, 30)];
    self.longitude.text=self.location[@"longitude"];

    self.timezoneName=[[UILabel alloc]initWithFrame:CGRectMake(100, 300, 100, 30)];
    self.timezoneName.text=@"时区:";
    self.timezone=[[UILabel alloc]initWithFrame:CGRectMake(150, 300, 200, 30)];
    self.timezone.text=self.location[@"timezone"];

    [self.view addSubview:self.latitudeName];
    [self.view addSubview:self.longitudeName];
    [self.view addSubview:self.timezoneName];

    [self.view addSubview:self.latitude];
    [self.view addSubview:self.longitude];
    [self.view addSubview:self.timezone];

}

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

@end

2.GDataXMLNode类库

具体配置过程如下

核心代码

#import "rootTableViewController.h"
#import "GDataXMLNode.h"
#import "secondViewController.h"
@interface rootTableViewController ()
@property(nonatomic,strong)NSMutableDictionary *location;
@property(nonatomic,strong)NSMutableArray *locationArr;
@end

@implementation rootTableViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    self.locationArr=[NSMutableArray array];
//    获取网络上的xml
    NSURL *url=[NSURL URLWithString:@"http://www.meituan.com/api/v1/divisions?mtt=1.help%2Fapi.0.0.im7envub"];

    NSData *data=[NSData dataWithContentsOfURL:url];

//   使用NSData对象初始化
    GDataXMLDocument *doc=[[GDataXMLDocument alloc]initWithData:data options:0 error:nil];

//    获取根节点
    GDataXMLElement *rootElement=[doc rootElement];

//    获取根节点以下的节点
    GDataXMLElement *divisions=[[rootElement elementsForName:@"divisions"] objectAtIndex:0];
    NSArray *division=[divisions elementsForName:@"division"];

//          NSLog(@"%@",division);
    for (GDataXMLElement *div in division) {
        self.location=[NSMutableDictionary dictionary];
//        获取name的节点
        GDataXMLElement *nameElement=[[div elementsForName:@"name"] objectAtIndex:0];
        NSString *name=[nameElement stringValue];

//    获取location 的节点
        GDataXMLElement *location=[[div elementsForName:@"location"] objectAtIndex:0];

//        获取latitude 的节点
        GDataXMLElement *latitudeElement=[[location elementsForName:@"latitude"] objectAtIndex:0];
            NSString *latitude=[latitudeElement stringValue];

//       获取longitude 的节点
        GDataXMLElement *longitudeElement=[[location elementsForName:@"longitude"] objectAtIndex:0];
        NSString *longitude=[longitudeElement stringValue];

//        把他们的值加到一个=字典中
        [self.location setObject:name forKey:@"name"];
        [self.location setObject:latitude forKey:@"latitude"];
        [self.location setObject:longitude forKey:@"longitude"];

//        把字典添加到可变集合中
        [self.locationArr addObject:self.location];

    }
    self.title=@"城市列表";
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"reuseIdentifier"];

}

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

#pragma mark - Table view data source

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.locationArr.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"reuseIdentifier" forIndexPath:indexPath];

    cell.textLabel.text=self.locationArr[indexPath.row][@"name"];
    return cell;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(nonnull NSIndexPath *)indexPath{
    secondViewController *sec=[[secondViewController alloc]init];
//    把字典传递到第二个页面
    sec.location=self.locationArr[indexPath.row];
            [self.navigationController pushViewController:sec animated:YES];

}

@end

第二个页面类似

3.系统自带的

核心代码

#import "rootTableViewController.h"
#import "secondViewController.h"
@interface rootTableViewController ()<NSXMLParserDelegate>
@property(nonatomic,strong)NSMutableArray *arr;
@property(nonatomic,strong)NSMutableDictionary *dic;

@property(nonatomic,strong)NSString *str;
@end

@implementation rootTableViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    NSURL *url=[NSURL URLWithString:@"http://www.meituan.com/api/v1/divisions?mtt=1.help%2Fapi.0.0.im7mg21x"];
    NSData *data=[NSData dataWithContentsOfURL:url];

    NSXMLParser *parser=[[NSXMLParser alloc]initWithData:data];

    parser.delegate=self;

    BOOL bol=[parser parse];
    NSLog(@"%d",bol);
    self.title=@"城市列表";
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"reuseIdentifier"];

}

-(void)parserDidStartDocument:(NSXMLParser *)parser{

    NSLog(@"start");
    self.arr=[NSMutableArray array];
}
-(void)parserDidEndDocument:(NSXMLParser *)parser{
    NSLog(@"end");
    NSLog(@"%@",self.arr);
}

-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary<NSString *,NSString *> *)attributeDict{

    if ([elementName isEqualToString:@"division"]) {
        self.dic=[NSMutableDictionary dictionary];

        [self.dic setDictionary:attributeDict];
    }
}

-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{
    if ([elementName isEqualToString:@"name" ]||[elementName isEqualToString:@"latitude"]||[elementName isEqualToString:@"longitude"]) {
        [self.dic setObject:self.str forKey:elementName];
    }else if ([elementName isEqualToString:@"division"]){
        [self.arr addObject:self.dic];
    }

}
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{
    self.str=string;

}

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

#pragma mark - Table view data source

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.arr.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"reuseIdentifier" forIndexPath:indexPath];

    cell.textLabel.text=self.arr[indexPath.row][@"name"];
    return cell;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    secondViewController *sec=[[secondViewController alloc]init];
    sec.location=self.arr[indexPath.row];
    [self.navigationController pushViewController:sec animated:YES];

}
@end