Qt调用webserver完成登录操作

最近工作中需要使用webserver的方式进行登录界面的验证，之前写过一个用winsocket2的，好麻烦，这次决定使用qt了，研究了下，果然简单很多啊。
整体而言，需要关注的类有两个：QNetworkAccessManager和QNetworkReply。话不多说，上代码。

头文件如下，部分有注释：

#ifndef HTTPOPERATOR_H
#define HTTPOPERATOR_H

#include <QObject>
#include <QNetworkAccessManager>
#include <QNetworkReply>

class HttpOperator : public QObject
{
    Q_OBJECT

public:
    HttpOperator(QObject *parent = 0);
    ~HttpOperator();

    // 实现post方法模拟webserver
    void post(QUrl url, const QString& strSend);

    // 获取post方法成功后的返回信息
    QString getRecv() { return m_strRecv; }

    // 获取服务器返回的错误信息
    QNetworkReply::NetworkError getLastError(){ return m_error; }

private slots:
    void slotFinished(QNetworkReply* reply);

signals:
    void signalFinished();

private:
    QNetworkAccessManager* m_pNetwork;
    QString m_strRecv;
    QNetworkReply::NetworkError m_error;
};

#endif // HTTPOPERATOR_H

实现文件如下：

#include "HttpOperator.h"

HttpOperator::HttpOperator(QObject *parent)
    : QObject(parent)
{
    m_pNetwork = new QNetworkAccessManager;
    connect(m_pNetwork, SIGNAL(finished(QNetworkReply*)), this, SLOT(slotFinished(QNetworkReply*)));
}

HttpOperator::~HttpOperator()
{

}

void HttpOperator::post(QUrl url, const QString& strSend)
{
    QNetworkRequest request;
    request.setUrl(url);
    request.setRawHeader("POST", url.path().toUtf8());
    request.setRawHeader("Host", url.host().toUtf8());
    request.setRawHeader("Content-Type", "application/soap+xml; charset=utf-8");
    request.setRawHeader("Content-Length", QString("%1").arg(strSend.length()).toUtf8());
    m_pNetwork->post(request, strSend.toUtf8());
}

void HttpOperator::slotFinished(QNetworkReply* reply)
{
    QVariant statusCodeV =
        reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
    QVariant redirectionTargetUrl =
        reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
    m_error = reply->error();
    if (m_error == QNetworkReply::NoError)
    {
        m_strRecv = QString::fromUtf8(reply->readAll());
    }

    emit signalFinished();

    reply->deleteLater();
}

==================2016-4-07====================
增加一个post的内容以为参考：

QString("<?xml version="1.0" encoding="utf-8"?>"
        "<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">"
        "<soap12:Body>"
        "<Login xmlns="http://tempuri.org/">"
        "<loginname>demo</loginname>"
        "<password>demo</password>"
        "</Login>"
        "</soap12:Body>"
        "</soap12:Envelope>"
        );

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