使用TFHpple/hpple (IOS)从HTML页面解析部分

Question

我正在加载整个HTML页面，并希望获得特定标签之间的所有内容。为此，我要做的是：

articleXpathQueryString = @"//article/div[@class='entry breadtext']";
articleNodes = [articleParser searchWithXPathQuery:articleXpathQueryString];
item.content = [self recursiveHTMLIterator:articleNodes content:@""];

然后我有一个递归函数，它尝试汇总所有子节点的内容以及它们的HTML标记：

-(NSString*) recursiveHTMLIterator:(NSArray*)elementArray content:(NSString*)content {
for(TFHppleElement *element in elementArray) {
    if(![element hasChildren]) {
        //The element has no children
    } else {
        //The element has children
        NSString *tmpStr = [[element firstChild] content];

        if(tmpStr != nil) {
            NSString *css = [element tagName];
            content = [content stringByAppendingString:[self createOpenTag:css]];
            content = [content stringByAppendingString:tmpStr];
            content = [content stringByAppendingString:[self createCloseTag:css]];
        }

        NSString *missingStr = [[element firstTextChild] content];
        if(![missingStr isEqualToString:tmpStr]) {
            if(missingStr != nil) {
                NSString *css= [element tagName];
                content = [content stringByAppendingString:[self createOpenTag:css]];
                content = [content stringByAppendingString:missingStr];
                content = [content stringByAppendingString:[self createCloseTag:css]];
            }
        }

        content = [self recursiveHTMLIterator:element.children content:content];
    }
}
return content;
}

然而，即使结果在某种程度上令人满意，它也没有获得img标签，并且当HTML格式如下时，它会有点混乱：

<p>
<strong>-</strong>
This text is not parsed because it skips it after it acquires <strong>-</strong>, this is why I have the second if-statement which catches up "missing strings", but they are inserted in the wrong order
</p>

所以我的问题是，我应该继续尝试让递归方法正确解析，还是有更容易的方法来获取所需的HTML (然后在web视图中使用)。我要找的是所有的内容

<article> THIS </article>.

换句话说，我想用TFHpple做一些类似的事情(尽管代码不工作)：

articleXpathQueryString = @"//article/div[@class='entry breadtext']";
articleNodes = [articleParser searchWithXPathQuery:articleXpathQueryString];
item.content = [articleParser allContentAsString];    //I simply want everything in articleParser in a string format

Answer 1

好了，我终于想明白了……我希望这对像我一样愚蠢的人有帮助：

所有需要做的就是将网址加载到the视图中，然后简单地执行一个简单的javascript查询，如下所示(在webViewDidFinishLoad中)：

NSString *bread_text = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementsByClassName('entry breadtext')[0].innerHTML"];

来获取一个众所周知的类中的所有内容。现在我需要弄清楚如何在不显示webview的情况下加载它，但这似乎比遍历XML结构容易得多:)