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我在我的 Qt MainWindow 中有一个作为 WebView 加载的 HTML 文件，该文件位于 localhost XAMPP 文件夹中。该文件基本上从用户那里获取两个日期和时间间隔，当用户单击“获取查询”按钮时，地图显示查询的总量 - 从 XAMPP 上的 MySQL 数据库获取 - 作为热图。但是，尝试从 Qt 运行此 HTML 文件 - 单击 HTML 窗口的 F​​etch 查询按钮 - 给我 Ajax POST 错误，我无法从 Qt 访问数据库，而 localhost 副本可以。我还尝试发布到使用 NetworkAccessManager 获取查询的 PHP 文件，但我得到了一个“未知错误”作为回复。有没有一种特殊的方法来解决这个问题？HTML-jQuery 代码和 NetworkAccessManager 帖子代码如下：

HTML-jQuery 部分：

<form id="ajaxForm" action="index.php" method="post">

Start <input type="text" name = "date1" id = "datepicker" value = "2011-07-13" style = "width:70px">
<input type="text" name = "time1" id = "timepicker1" value = "00:00" style = "width:40px"> 
--
End <input type="text" name = "date2" id = "datepicker2" value = "2011-07-13" style = "width:70px">
<input type="text" name = "time2" id = "timepicker2" value = "00:01" style = "width:40px">



<select name = "freq">
  <option value = "all" selected = "true">all</option>
  <option value = "hourly">hourly</option>
  <option value = "daily">daily</option>
  <option value = "weekly">weekly</option>
  <option value = "monthly">monthly</option>
</select>

data between 
    <input type="text" id="time" style="border:0; color:#f6931f; font-weight:bold;" />

    <input type="submit" name="fetch" value="Fetch">


</form>

我用来测试我的 PHP 文件以获取回复的 NetworkAccessManager 部分：

QNetworkAccessManager* mNetworkManager = new QNetworkAccessManager(this);
QObject::connect(mNetworkManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(onNetworkReply(QNetworkReply*)));
connect(mNetworkManager, SIGNAL(finished(QNetworkReply*)),
        this, SLOT(replyFinished(QNetworkReply*)));
QUrl url = "http://localhost/heatQuery.php";


QUrl params;
params.addQueryItem("date1","2011-07-13");
params.addQueryItem("time1","00:00");
params.addQueryItem("date2","2011-07-13");
params.addQueryItem("time2","13:00");
params.addQueryItem("freq","hourly");


QByteArray data;
data.append(params.toString());
data.remove(0,1);

QNetworkRequest request;
request.setUrl(url);
request.setHeader(QNetworkRequest::ContentTypeHeader,
QVariant("application/x-www-form-urlencoded"));
mNetworkManager->post(request, data);


void MainWindow::replyFinished(QNetworkReply *reply){
//Use the reply as you wish
QString text(reply->errorString());
std::cout<<"REPLY IS" << text.toStdString() << std::endl;

}
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1 回答 1

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由于 localhost 副本成功访问数据库，Change the permission of your database and then run.

要更改数据库权限以完全执行此[假设您正在使用 linux] 命令。

 chmod 777 database_name
于 2012-05-18T19:02:51.823 回答