Gdata XML解析配置和简单使用

导入libxml2,使用第三方AFNetworking网络请求，第三方XML解析GData

GData需要的配置 Build Settings 里搜索，添加如下

如果是ARC ，需要加上 -fno-objc-arc

首先找一个xml网址使用AFNetworking请求得到NSData数据

#define HTTP_URL_GET @"http://lab.hudong.com/ipad/zutujingxuan.xml"

- (void)getRequest {

    AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc]

                                              init];

    //返回数据解析

    manager.responseSerializer = [AFHTTPResponseSerializer serializer];

    //AFJSONResponseSerializer responseObject就是jeson解析后的对象（有可能是字典）

    //AFXMLParserResponseSerializer responseObject就是NSXMLPareser对象

    //AFHTTPRequestOperationManager responseObject就是NSData

    [manager GET:HTTP_URL_GET parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

        NSLog(@"%@",responseObject);

//        NSXMLParser

        [self xml:responseObject];

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {

        NSLog(@"error:%@.",error.localizedDescription);

    }];

}

先打开火狐浏览器看xml的层次结构（复制网址在火狐浏览器上打开）

使用GData解析,记住一层一层解析

- (void)xml:(NSData *)data {

      //创建一个解析对象

    GDataXMLDocument *document = [[GDataXMLDocument alloc]initWithData:data options: error:nil];

    //获取根节点

    GDataXMLElement *rootElement = document.rootElement;

    NSLog(@"name: %@,stringvaule: %@",rootElement.name,rootElement.stringValue);

    GDataXMLElement *channeName = [rootElement elementsForName:@"channelName"].firstObject;

    NSLog(@"%@---%@",channeName.name,channeName.stringValue);

    //取多组

    // //docInfo 直接跳过前面的子节点，知道取到名字对应的子节点

    //    NSArray *docInfos = [rootEiement nodesForXPath:@"//docInfo" error:nil]

    NSArray *docInfos = [[rootElement elementsForName:@"docList"].firstObject elementsForName:@"docInfo"];

    for (GDataXMLElement *docInfoElement in docInfos) {

        NSMutableDictionary * dic = [NSMutableDictionary dictionary];

        for (GDataXMLElement *elment in [docInfoElement children]) {

            [dic setObject:elment.stringValue forKey:elment.name];

        }

        [_allInfos addObject:dic];

    }

    NSLog(@"%@",_allInfos);

}

最后是用一个全局的NSMutableArray接收打印，～