用Objective-C HTMLParser解析HTML文档

代码:https://github.com/zootreeves/Objective-C-HMTL-Parser

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戴维营教育代码
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NSString *str = [ NSString stringWithContentsOfURL:[ NSURL URLWithString: @"http://vip.astro.sina.com.cn/astro/view/aries/day/20140808" ] encoding: NSUTF8StringEncoding error: nil ];
     
     NSError *error;
     
     //预先步骤
     //1. 在工程中添加libxml2的库(Build Phase -> Link binary with libraries -> +)
     //2. 在Header Search Path中添加/usr/include/libxml2
     
     //解析HTML文档
     HTMLParser *parser = [[HTMLParser alloc] initWithString:str error:&error];
     if (error) {
         NSLog ( @"%@" , error);
         return ;
     }
     
     //获取HTML的body部分
     HTMLNode *node = [parser body];
     //根据HTML节点的属性查找节点
     NSArray *tabs = [node findChildrenWithAttribute: @"class" matchingName: @"tab" allowPartial: YES ];
     for (HTMLNode *n in tabs) {
         //根据节点名称查找子节点
         HTMLNode *h4 = [n findChildTag: @"h4" ];
         HTMLNode *img = [n findChildTag: @"img" ];
         HTMLNode *p = [n findChildTag: @"p" ];
         
         //获取的属性值
         NSLog ( @"%@" , [img getAttributeNamed: @"src" ]);
         //获取节点内容
         NSLog ( @"%@: %@" , [h4 contents], [p contents]);
     }


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