QtSoap调用Web Service（QtSoap是非官方应用）

今天学习如何用QtSoap访问Web Service服务。这里调用的是查询QQ在线状态的服务qqOnlineWebService。调用的几个步骤：

1.创建QtSoapMessage对象 message;

2.message调用setMethod设置调用的服务

3.message调用addMethodArgument设置参数

4.创建QtSoapHttpTransport  *m_pHttp

5.m_pHttp调用setHost，setAction

6.最后m_pHttp调用submitRequest提交请求

class WebServiceClient : public QDialog

{

Q_OBJECT

public:

WebServiceClient(QWidget *parent = 0,Qt::WFlags flags = 0);

~WebServiceClient();

private slots:

voidSubmitSlot();

voidResponseSlot(const QtSoapMessage &response);

private:

voidresizeEvent(QResizeEvent *event);

QLineEdit   *m_pNumber;

QPushButton *m_pSubmit;

QLineEdit   *m_pResult;

QLabel      *m_pQQNumber;

QLabel      *m_pState;

QtSoapHttpTransport  *m_pHttp;

};

WebServiceClient::WebServiceClient(QWidget*parent, Qt::WFlags flags)

: QDialog(parent, flags)

{

m_pQQNumber = newQLabel(tr("QQ号码"),this);

m_pState = newQLabel(tr("QQ状态"),this);

m_pNumber = newQLineEdit(this);

m_pResult = newQLineEdit(this);

m_pResult->setReadOnly(true);

m_pSubmit = newQPushButton(tr("提交"),this);

m_pHttp = newQtSoapHttpTransport;

connect(m_pSubmit,SIGNAL(clicked()),this,SLOT(SubmitSlot()));

connect(m_pHttp,SIGNAL(responseReady( const QtSoapMessage & )),this,SLOT(ResponseSlot(constQtSoapMessage &)));

this->setFixedSize(QSize(300,300));

}

WebServiceClient::~WebServiceClient()

{

}

voidWebServiceClient::ResponseSlot( constQtSoapMessage & response )

{

QString xml = response.toXmlString();

QDomDocument doc;

doc.setContent(xml);

QDomNodeList nodeList =doc.elementsByTagName("qqCheckOnlineResult");

if(nodeList.size())

{

QDomNode resultNode =nodeList.at(0);

QString result =resultNode.toElement().text();

QString state;

if(QString::compare(result,"Y") ==0)

{

state = tr("在线");

}

elseif (QString::compare(result,"N") == 0)

{

state = tr("离线");

}

elseif (QString::compare(result,"E") == 0)

{

state = tr("QQ号码错误");

}

elseif (QString::compare(result,"A") == 0)

{

state = tr("商业用户验证失败");

}

elseif (QString::compare(result,"V") == 0)

{

state = tr("免费用户超过数量");

}

m_pResult->setText(state);

}

}

voidWebServiceClient::SubmitSlot()

{

QtSoapMessage message;

message.setMethod("qqCheckOnline","http://WebXml.com.cn/");

m_pHttp->setAction("http://WebXml.com.cn/qqCheckOnline");

m_pHttp->setHost("webservice.webxml.com.cn");

QString number = m_pNumber->text();

message.addMethodArgument("qqCode","",number);

QString xml = message.toXmlString();

m_pHttp->submitRequest(message,"/webservices/qqOnlineWebService.asmx");

}

voidWebServiceClient::resizeEvent( QResizeEvent *event)

{

m_pQQNumber->setGeometry(5,5,50,20);

m_pNumber->setGeometry(60,5,100,20);

m_pSubmit->setGeometry(160,5,50,20);

m_pState->setGeometry(5,30,50,20);

m_pResult->setGeometry(60,30,100,20);

}

int main(int argc, char*argv[])

{

QApplication a(argc, argv);

QTextCodec::setCodecForCStrings(QTextCodec::codecForName("GB2312"));

QTextCodec::setCodecForLocale(QTextCodec::codecForName("GB2312"));

QTextCodec::setCodecForTr(QTextCodec::codecForName("GB2312"));

WebServiceClient w;

w.show();

returna.exec();

}

http://blog.csdn.net/hai200501019/article/details/19755987