1、GDataXML配置

• 在Other Linker Flags中加入-lxml2

配置1.png

• 在Head Search Path中加入/usr/include/libxml2

配置2.png

• 設置非ARC標記

設置非ARC標記.png

2、GDataXML的具體用法

// 加載整個文檔
GDataXMLDocument *doc = [[GDataXMLDocument alloc] initWithData:data options:0 error:nil];

// 獲得根節點
doc.rootElement;

// 獲得其他節點
[element elementsForName:@"video"];

// 獲得節點的屬性
[element attributeForName:@"name"].stringValue;

3、GDataXML解析小案例

#import "ViewController.h"
#import <SDWebImage/UIImageView+WebCache.h>
#import <MediaPlayer/MPMoviePlayerViewController.h>
#import "XMGVideo.h"
#import <MJExtension/MJExtension.h>
#import "GDataXMLNode.h"

@interface ViewController ()<NSXMLParserDelegate>

@property (nonatomic, strong) NSMutableArray *videos; /**< 視屏信息 */

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    // 只需要在字典轉模型之前, 告訴框架要將模型中的哪個屬性和字典中的哪個KEY對應
    [XMGVideo setupReplacedKeyFromPropertyName:^NSDictionary *{
        return @{@"ID":@"id"};
    }];

    self.tableView.rowHeight = 150;
    // Do any additional setup after loading the view, typically from a nib.
    NSURL *url = [NSURL URLWithString:@"http://120.25.226.186:32812/video?type=XML"];
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {

        // 1.創建解析器
        GDataXMLDocument *document = [[GDataXMLDocument alloc] initWithData:data options:kNilOptions error:nil];
        // 2.獲取根元素
        GDataXMLElement *rootElement = document.rootElement;
        // 3.從根元素中獲取所有子元素
        NSArray *elements = [rootElement elementsForName:@"video"];
        // 4.遍歷子元素, 取出屬性轉換為模型
        for (GDataXMLElement *element in elements) {
            XMGVideo *video = [[XMGVideo alloc] init];
            video.ID = @([element attributeForName:@"id"].stringValue.integerValue);
            video.image = [element attributeForName:@"image"].stringValue;
            video.url = [element attributeForName:@"url"].stringValue;
            video.name = [element attributeForName:@"name"].stringValue;
            video.length = @([element attributeForName:@"length"].stringValue.integerValue);
            [self.videos addObject:video];

        }

        // 5.刷新表格
        [self.tableView reloadData];
    }];
}

#pragma mark - datasource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.videos.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    // 1.創建cell
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];

    // 2.取出對應行的字典
    XMGVideo *video = self.videos[indexPath.row];
    // 2.1設置數據
    cell.textLabel.text = video.name;
    cell.detailTextLabel.text = [NSString stringWithFormat:@"時長:%@", video.length];
    NSString *urlStr = [NSString stringWithFormat:@"http://120.25.226.186:32812/%@", video.image];
    urlStr = [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    [cell.imageView sd_setImageWithURL:[NSURL URLWithString:urlStr] placeholderImage:nil];

    // 3.返回cell
    return cell;
}


- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    // 1.取出選中行對應的字典
    XMGVideo *video = self.videos[indexPath.row];
    // 2.根據字典中的URL屬性拼接視屏的地址
    NSString *urlStr = [NSString stringWithFormat:@"http://120.25.226.186:32812/%@", video.url];
    urlStr = [urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    NSURL *url = [NSURL URLWithString:urlStr];
    // 3.播放視屏
    MPMoviePlayerViewController *vc = [[MPMoviePlayerViewController alloc] initWithContentURL:url];
    // 4.顯示控制器
    [self presentViewController:vc animated:YES completion:nil];
}

#pragma mark - lazy
- (NSMutableArray *)videos
{
    if (!_videos) {
        _videos = [NSMutableArray array];
    }
    return _videos;
}
@end