blocks|key|1315616|text|如果要提取已加载的UIWebView的内容，请使用-stringByEvaluatingJavaScriptFromString。例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1315617|NSString++*html+=+[webView+stringByEvaluatingJavaScriptFromString:+@"document.body.innerHTML"];|code-block|syntax|javascript|1315618|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

if you want to extract the contents of an already-loaded UIWebView, -stringByEvaluatingJavaScriptFromString. For example:

<pre><code>NSString *html = [webView stringByEvaluatingJavaScriptFromString: @"document.body.innerHTML"];
</code></pre>

blocks|key|1530938|text|要获取整个超文本标记语言原始数据(使用<head>和<body>)：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1530939|NSString+*html+=+[webView+stringByEvaluatingJavaScriptFromString:@"document.documentElement.outerHTML"];|code-block|syntax|javascript|1530940|entityMap^0|J|6|Q|6|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

To get the whole HTML raw data (with <code>&lt;head&gt;</code> and <code>&lt;body&gt;</code>):

<pre><code>NSString *html = [webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.outerHTML"];
</code></pre>

blocks|key|1315753|text|请注意，NSString+stringWithContentsOfURL将报告与发出相同请求的UIWebView完全不同的用户代理字符串。因此，如果您的服务器是用户代理感知的，并且根据请求它的人返回不同的html，那么您可能不会以这种方式获得正确的结果。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1315754|还要注意的是，上面提到的@"document.body.innerHTML"只会显示body标记中的内容。如果你使用@"document.all[0].innerHTML"，你将同时得到头部和身体。这仍然不是UIWebView的完整内容，因为它不会返回!doctype或html标记，但它更接近。|offset|length|style|CODE|1315755|entityMap^0|0|C|Q|1M|S|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]|$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|P|8|@]|9|@]|A|$]]]|I|$]]

Note that the NSString stringWithContentsOfURL will report a totally different user-agent string than the UIWebView making the same request. So if your server is user-agent aware, and sending back different html depending on who is asking for it, you may not get correct results this way.

Also note that the <code>@"document.body.innerHTML"</code> mentioned above will only display what is in the body tag. If you use <code>@"document.all[0].innerHTML"</code> you will get both head and body. Which is still not the complete contents of the UIWebView, since it will not get back the !doctype or html tags, but it is a lot closer.

blocks|key|1530817|text|阅读：-|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1530818|NSString+*html+=+[myWebView+stringByEvaluatingJavaScriptFromString:+@"document.getElementById('your+div+id').textContent"];
NSLog(html);++++|code-block|syntax|javascript|1530819|要修改：-|1530820|html+=+[myWebView+stringByEvaluatingJavaScriptFromString:+@"document.getElementById('your+div+id').textContent=''"];|1530821|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

To read:-

<pre><code>NSString *html = [myWebView stringByEvaluatingJavaScriptFromString: @"document.getElementById('your div id').textContent"];
NSLog(html); 
</code></pre>

To modify:-

<pre><code>html = [myWebView stringByEvaluatingJavaScriptFromString: @"document.getElementById('your div id').textContent=''"];
</code></pre>

blocks|key|1530994|text|在Swift+v3中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1530995|let+doc+=+webView.stringByEvaluatingJavaScript(from:+"document.documentElement.outerHTML")|code-block|syntax|javascript|1530996|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In Swift v3:

<pre><code>let doc = webView.stringByEvaluatingJavaScript(from: "document.documentElement.outerHTML")
</code></pre>

blocks|key|1315815|text|(Xcode5+iOS+7)适用于iOS+7和Xcode5的通用应用程序示例。它是一个开源项目/示例，位于以下位置：Link+to+SimpleWebView+(Project+Zip+and+Source+Code+Example)+|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1315816|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/matthewferguson/SimpleWebView.git^0|1M|1O|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

(Xcode 5 iOS 7) Universal App example for iOS 7 and Xcode 5. It is an open source project / example located here: <a href="https://github.com/matthewferguson/SimpleWebView.git" rel="nofollow">Link to SimpleWebView (Project Zip and Source Code Example) </a>

blocks|key|1315836|text|你应该试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1315837|document.documentElement.outerHTML|code-block|syntax|javascript|1315838|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

you should try this:

<pre><code>document.documentElement.outerHTML
</code></pre>

blocks|key|1315875|text|我使用如下的快速扩展：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1315876|extension+UIWebView+{
++++var+htmlContent:String?+{
++++++++return+self.stringByEvaluatingJavaScript(from:+"document.documentElement.outerHTML")
++++}

}|code-block|syntax|javascript|1315877|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I use a swift extension like this:

<pre><code>extension UIWebView {
 var htmlContent:String? {
 return self.stringByEvaluatingJavaScript(from: "document.documentElement.outerHTML")
 }

}
</code></pre>

blocks|key|1315897|text|UIWebView|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1315898|从UIWebView`获取HTML|1315899|let+content+=+uiWebView.stringByEvaluatingJavaScript(from:+"document.body.innerHTML")|code-block|syntax|javascript|1315900|将超文本标记语言设置为UIWebView|1315901|//Do+not+forget+to+extend+a+class+from+`UIWebViewDelegate`+and+nil+the+delegate

func+someFunction()+{

++++let+uiWebView+=+UIWebView()
++++uiWebView.loadHTMLString("<html><body></body></html>",+baseURL:+nil)
++++uiWebView.delegate+=+self+as?+UIWebViewDelegate
}

func+webViewDidFinishLoad(_+webView:+UIWebView)+{
++++//ready+to+be+processed
}|1315902|[get/set+HTML+from+WKWebView]|offset|length|1315903|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/57083024/4770877^0|0|0|0|0|0|0|T|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|13|8|@]|9|@$O|14|P|15|1|16]]|A|$]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

<h2>UIWebView</h2>

get HTML from UIWebView`

<pre><code>let content = uiWebView.stringByEvaluatingJavaScript(from: "document.body.innerHTML")
</code></pre>

set HTML into UIWebView

<pre><code>//Do not forget to extend a class from `UIWebViewDelegate` and nil the delegate

func someFunction() {

 let uiWebView = UIWebView()
 uiWebView.loadHTMLString("&lt;html&gt;&lt;body&gt;&lt;/body&gt;&lt;/html&gt;", baseURL: nil)
 uiWebView.delegate = self as? UIWebViewDelegate
}

func webViewDidFinishLoad(_ webView: UIWebView) {
 //ready to be processed
}
</code></pre>

<a href="https://stackoverflow.com/a/57083024/4770877">[get/set HTML from WKWebView]</a>

Is it possible to read the raw HTML content of a web page that has been loaded into a <code>UIWebView</code>?

If not, is there another way to pull raw HTML content from a web page in the iPhone SDK (such as an equivalent of the .NET <code>WebClient::openRead</code>)?

Reading HTML content from a UIWebView

服务器

Swift

是否可以读取已加载到UIWebView中的网页的原始HTML内容如果没有，有没有其他方法可以从HTML (例如.NET WebClient::openRead的等价物)的网页中提取原始iPhone内容？

问从UIWebView读取超文本标记语言内容
EN

回答 9

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