iOS第三方HTML解析 TFHpple 的简单实用

• 准备工作
  1.导入TFHpple
  2.引入静态库文件libxml2.2.dylib
  3.PROJECT 中的 Search Path - header search paths添加 /usr/include/libxml2

• 解析步骤
  1.初始化data
  2.根据data创建TFHpple实例
  3.查找节点存入数组
  4.在该节点下 循环查找子节点

源HTML代码：

<div class="cell item" style=""><div style="position: absolute; margin: -10px -10px 0px 650px;"></div>    <table cellpadding="0" cellspacing="0" border="0" width="100%">        <tr><td width="48" valign="top" align="center"><a href="/member/zhangyi2099"><img src="//cdn.v2ex.co/avatar/d00c/ceb1/18330_normal.png?m=1345037943" class="avatar" border="0" align="default" /></a></td><td width="10"></td><td width="auto" valign="middle"><span class="item_title"><a href="/t/228173#reply1">看了本「网球优等生」</a></span><div class="sep5"></div><span class="small fade"><div class="votes"></div><a class="node" href="/go/acg">ACG</a> &nbsp;?&nbsp; <strong><a href="/member/zhangyi2099">zhangyi2099</a></strong> &nbsp;?&nbsp; 20 分钟前 &nbsp;?&nbsp; 最后回复来自 <strong><a href="/member/yishanxin">yishanxin</a></strong></span></td><td width="70" align="right" valign="middle">        <a href="/t/228173#reply1" class="count_livid">1</a>    </td>        </tr>    </table></div>

Object-C代码

NSData *htmlData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:@"http://www.xxx.com/xxxx?x=1"]];TFHpple *xpathParser = [[TFHpple alloc]initWithHTMLData:htmlData];#pragma mark 每页主题NSArray *itemArray = [xpathParser searchWithXPathQuery:@"//div[@class = 'cell item']"];//通过for in 在itemArray数组中 循环查找子节点for (TFHppleElement *hppleElement in itemArray) {    /***这段被正则表达代替 @"//div[@class = 'cell item']"]  if ([[hppleElement objectForKey:@"class" ] isEqualToString:@"cell item"]) {  [self.allDataMutableArray addObject:hppleElement];  }*/    #pragma mark 子节点头像        NSArray *IMGElementsArr = [hppleElement searchWithXPathQuery:@"//img"];    for (TFHppleElement *tempAElement in IMGElementsArr) {        NSString *imgStr = [tempAElement objectForKey:@"src"];        NSString *subStr = [@"http:" stringByAppendingString:imgStr];        [self.avatarMutableArray addObject:subStr];    }    #pragma mark 子节点标题/链接       NSArray *TitleElementArr = [hppleElement searchWithXPathQuery:@"//span[@class='item_title']"];    for (TFHppleElement *tempAElement in TitleElementArr) {        //获得标题        NSString *titleStr =  [tempAElement content];    //1.获得子节点（正文连接节点） 2.获得节点属性值 3.加入到字典中        NSArray * arr = [tempAElement children];        TFHppleElement *href = arr.firstObject;        NSString * titleHrefStr = [href objectForKey:@"href"];    [self.allDataMutableDict setObject:titleStr forKey:@"title"];        self.allDataMutableDict[@"titleHref"] = titleHrefStr;    }        #pragma mark 子节点fade    //简化写法 简化3步    NSArray *nodeElementArr = [hppleElement searchWithXPathQuery:@"//a[@class='node']"];    self.allDataMutableDict[@"node"] = [nodeElementArr.firstObject content];    NSArray *fadeElementArr = [hppleElement searchWithXPathQuery:@"//span[@class = 'small fade']"];    NSArray *subArray = [ [fadeElementArr.firstObject content] componentsSeparatedByString:@" ??? "];        self.allDataMutableDict[@"louZhu"] = [subArray objectAtIndex:1];    self.allDataMutableDict[@"lastTime"] = [subArray objectAtIndex:2];        #pragma mark 子节点回复数    NSArray * repeatElementArr = [hppleElement searchWithXPathQuery:@"//a[@class = 'count_livid']"];    if ([repeatElementArr.firstObject content ]) {        self.allDataMutableDict[@"repeatCount"] = [repeatElementArr.firstObject content];    }else{        self.allDataMutableDict[@"repeatCount"] = [NSString stringWithFormat:@"%d",0];    }#pragma mark 转化model 存进数组    [model setValuesForKeysWithDictionary:self.allDataMutableDict];    [self.allDataMutableArray addObject:model];        }