blocks|key|816774|text|你看过QNetworkAccessManager吗？下面是一个简单易用的示例，说明了使用情况：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|816775|class+MyClass+:+public+QObject
{
Q_OBJECT

public:
++++MyClass();
++++void+fetch();+

public+slots:
++++void+replyFinished(QNetworkReply*);

private:
++++QNetworkAccessManager*+m_manager;
};


MyClass::MyClass()
{
++++m_manager+=+new+QNetworkAccessManager(this);

++++connect(m_manager,+SIGNAL(finished(QNetworkReply*)),
+++++++++this,+SLOT(replyFinished(QNetworkReply*)));

}

void+MyClass::fetch()
{
++++m_manager->get(QNetworkRequest(QUrl("http://stackoverflow.com")));
}

void+MyClass::replyFinished(QNetworkReply*+pReply)
{

++++QByteArray+data=pReply->readAll();
++++QString+str(data);

++++//process+str+any+way+you+like!

}|code-block|syntax|javascript|816776|在您的完成信号处理程序中，将传递一个QNetworkReply对象，您可以从该对象读取响应，因为它是从QIODevice继承的。一个简单的方法就是调用readAll来获得一个QByteArray。您可以从那个QString构建一个QByteArray，并使用它做任何您想做的事情。|816777|entityMap|0|LINK|mutability|MUTABLE|url|http://qt-project.org/doc/qt-4.8/qnetworkaccessmanager.html|1|http://qt-project.org/doc/qt-4.8/qnetworkaccessmanager.html#finished|2|http://qt-project.org/doc/qt-4.8/qnetworkreply.html|3|http://qt-project.org/doc/qt-4.8/qiodevice.html|4|http://qt-project.org/doc/qt-4.8/qiodevice.html#readAll|5|http://qt-project.org/doc/qt-4.8/qbytearray.html|6|http://qt-project.org/doc/qt-4.8/qstring.html#QString-8^0|3|L|0|0|0|3|2|1|I|D|2|1F|9|3|23|7|4|2F|A|5|2W|7|6|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]]|C|$]]|$1|D|3|E|5|F|7|18|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|19|8|@]|9|@$A|1A|B|1B|1|1C]|$A|1D|B|1E|1|1F]|$A|1G|B|1H|1|1I]|$A|1J|B|1K|1|1L]|$A|1M|B|1N|1|1O]|$A|1P|B|1Q|1|1R]]|C|$]]|$1|K|3|-4|5|6|7|1S|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]|S|$5|N|O|P|C|$Q|T]]|U|$5|N|O|P|C|$Q|V]]|W|$5|N|O|P|C|$Q|X]]|Y|$5|N|O|P|C|$Q|Z]]|10|$5|N|O|P|C|$Q|11]]|12|$5|N|O|P|C|$Q|13]]]]

Have you looked at <a href="http://qt-project.org/doc/qt-4.8/qnetworkaccessmanager.html" rel="noreferrer">QNetworkAccessManager</a>? Here's a rough and ready sample illustrating usage:

<pre><code>class MyClass : public QObject
{
Q_OBJECT

public:
 MyClass();
 void fetch(); 

public slots:
 void replyFinished(QNetworkReply*);

private:
 QNetworkAccessManager* m_manager;
};


MyClass::MyClass()
{
 m_manager = new QNetworkAccessManager(this);

 connect(m_manager, SIGNAL(finished(QNetworkReply*)),
 this, SLOT(replyFinished(QNetworkReply*)));

}

void MyClass::fetch()
{
 m_manager-&gt;get(QNetworkRequest(QUrl("http://stackoverflow.com")));
}

void MyClass::replyFinished(QNetworkReply* pReply)
{

 QByteArray data=pReply-&gt;readAll();
 QString str(data);

 //process str any way you like!

}
</code></pre>

In your in your handler for the <a href="http://qt-project.org/doc/qt-4.8/qnetworkaccessmanager.html#finished" rel="noreferrer">finished</a> signal you will be passed a <a href="http://qt-project.org/doc/qt-4.8/qnetworkreply.html" rel="noreferrer">QNetworkReply</a> object, which you can read the response from as it inherits from <a href="http://qt-project.org/doc/qt-4.8/qiodevice.html" rel="noreferrer">QIODevice</a>. A simple way to do this is just call <a href="http://qt-project.org/doc/qt-4.8/qiodevice.html#readAll" rel="noreferrer">readAll</a> to get a <a href="http://qt-project.org/doc/qt-4.8/qbytearray.html" rel="noreferrer">QByteArray</a>. You can construct a <a href="http://qt-project.org/doc/qt-4.8/qstring.html#QString-8" rel="noreferrer">QString</a> from that QByteArray and do whatever you want to do with it.

blocks|key|2343041|text|你查过林克斯，卷发，还是wget？在过去，我需要从一个网站抓取和解析信息，sans+db+access，如果您试图获取动态格式化的数据，我相信这将是最快的方法。我不是一个C人员，但我假设有一种方法可以运行shell脚本并获取数据，或者至少在编写完文件后让脚本运行并从文件中获取输出。最坏的情况是，您可以使用C运行cron并检查写入文件末尾的“已完成”行，但我怀疑这是必要的。我想这取决于您需要它做什么，但是如果您只想要一个页面的输出html，那么像wget这样的东西可以通过管道发送到awk或grep，可以产生奇迹。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2343042|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Have you looked into lynx, curl, or wget?
In the past I have needed to grab and parse info from a website, sans db access, and if you are trying to get dynamically formatted data, I believe this would be the quickest way. I'm not a C guy, but I assume there is a way to run shell scripts and grab the data, or at least get the script running and grab the output from a file after writing to it. Worst case scenario, you could run a cron and check for a "finished" line at the end of the written file with C, but I doubt that will be necessary. I suppose it depends on what you're needing it for, but if you just want the output html of a page, something as east as a wget piped to awk or grep can work wonders.

blocks|key|2343053|text|保罗·狄克逊的回答可能是最好的方法，但杰西的回答确实触及了一些值得一提的东西。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2343054|cURL+--或者更准确地说，libcURL是一个非常强大的库。不需要执行shell脚本和解析输出，libCURL是可用的C、C%2B%2B和更多的语言。如果您正在执行一些奇怪的操作(比如http+POST通过ssl?)，这可能是有用的。那个qt不支持。|2343055|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Paul Dixon's answer is probably the best approach but Jesse's answer does touch something worth mentioning.

cURL -- or more precisely libcURL is a wonderfully powerful library. No need for executing shell scripts and parsing output, libCURL is available C,C++ and more languages than you can shake an URL at. It might be useful if you are doing some weird operation (like http POST over ssl?) that qt doesnt support.

i'm trying to get web-page data in string that than i could parse it. I didn't found any methods in qwebview, qurl and another. Could you help me? Linux, C++, Qt.

EDIT:

Thanks for help. Code is working, but some pages after downloading have broken charset.
I tried something like this to repair it:

<pre><code>QNetworkRequest *request = new QNetworkRequest(QUrl("http://ru.wiktionary.org/wiki/bovo"));

request-&gt;setRawHeader( "User-Agent", "Mozilla/5.0 (X11; U; Linux i686 (x86_64); "
 "en-US; rv:1.9.0.1) Gecko/2008070206 Firefox/3.0.1" );
request-&gt;setRawHeader( "Accept-Charset", "win1251,utf-8;q=0.7,*;q=0.7" );
request-&gt;setRawHeader( "charset", "utf-8" );
request-&gt;setRawHeader( "Connection", "keep-alive" );

manager-&gt;get(*request);
</code></pre>

Any results =(.

How can i get content of web-page

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我试着用字符串来获取网页数据，这比我能解析的还要多。我没有在qwebview，qurl和另一个中找到任何方法。你能帮我一下吗？Linux，C++，Qt。编辑：谢谢你帮忙。代码正在工作，但是下载后的一些页面已经损坏了字符集。我试过这样的方法来修复它：QNetworkRequest *request = new QNetw...

问如何获取网页内容？
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