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> ? <strong><a href="/member/zhangyi2099">zhangyi2099</a></strong> ? 20 分钟前 ? 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]; }