Question

我正在加载整个HTML页面，希望获取特定标记之间的所有内容。为此，我正在做：

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，它试图总结所有子节点的内容及其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，但当HTML格式如下时，它不会获取img标签并且会有点混乱：

<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，我是否应继续尝试正确解析递归方法，或者是否有更简单的方法来获取所需的HTML（然后我在Web视图中使用）。我正在寻找的是所有内容

<article> THIS </article>.

换句话说，我想用TFHpple做这样的事情（尽管代码不起作用）：

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

好的，我终于明白了......我希望如果有人像我一样愚蠢，这会有所帮助：

所有需要做的就是将URL加载到webview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"];

获取众所周知的课程中的所有内容。现在我需要弄清楚如何加载它而不首先显示webview，但这似乎比迭代XML结构更容易：）

使用TFHpple / hpple（IOS）从HTML页面解析部分

1 个答案: