QtSoap开发web services客户端程序

首先需要下载QtSoap开源包,下载地址为:

http://www.filestube.com/q/qtsoap+download，

我使用的是:qtsoap-2.6-opensource(不需要安装，直接解压到某个目录即可)。

如果你从未使用过QtSoap，那么先学习其中的Demo，在目录"examples"中，有easter,google和population 三个例子。

Note to Qt Visual Studio Integration users: In the instructions below, instead of building from command line with nmake, you can use the menu command 'Qt->Open Solution from .pro file' on the .pro files in the example and plugin directories, and then build from within Visual Studio.

如果是使用的的是VS+Qt开发方式，在使用菜单中的"Qt→Open Qt Project File (.pro)... 来打开以上工程文件。

本人使用的是VS2010，在采用以上方法时，仍然无法正常载入，于是我先用VS2005打开，在VS2005里对以上项目进行保存，再在VS2010里重新打开，当然在VS2010里重新打开时会提示需要进行格式转换，成功后你就可以编译运行Demo了。

本人先重写了：population，主要是为了熟悉下QtSoap以及开发配置。

1 在头文件(xxx.h)定义变量(XXX为类名，请您重新定义)。

#include

class QTextEdit;

private slots:
void getResponse();

private:
QTextEdit *m_pWeatherEdt;

private:
QtSoapHttpTransport http;

2 在类的构造函数中：

m_pWeatherEdt = new QTextEdit(this);

connect(&http, SIGNAL(responseReady()), SLOT(getResponse()));

3 请求发送：

void XXX::submitRequest()
{

http.setHost("www.abundanttech.com");
QtSoapMessage request;

    http.setAction ("http://www.abundanttech.com/WebServices/Population/getPopulation");
    request.setMethod("getPopulation", "http://www.abundanttech.com/WebServices/Population");
    request.addMethodArgument("strCountry", "", "china");
    http.submitRequest(request, "/WebServices/Population/population.asmx");

}

以上参数请查看：http://www.abundanttech.com/WebServices/Population/population.asmx

如下：

SOAP

The following is a sample SOAP request and response. The placeholders shown need to be replaced with actual values.

POST /WebServices/Population/population.asmx HTTP/1.1

Host: www.abundanttech.com

Content-Type: text/xml; charset=utf-8

Content-Length: length

SOAPAction: "http://www.abundanttech.com/WebServices/Population/getPopulation"

      string

当然，你也可以使用“中国气象局”的web services来做测试示例

void XXX::submitRequest()
{

http.setHost("www.ayandy.com");
QtSoapMessage request;

    http.setAction("http://tempuri.org/getSupportProvince");
    request.setMethod("getSupportProvince", "http://tempuri.org/");
    http.submitRequest(request, "/Service.asmx");

}

以上参数请查看：http://www.ayandy.com/Service.asmx如下：

SOAP 1.1

以下是 SOAP 1.2 请求和响应示例。所显示的占位符需替换为实际值。

POST /Service.asmx HTTP/1.1

Host: www.ayandy.com

Content-Type: text/xml; charset=utf-8

Content-Length: length

SOAPAction: "http://tempuri.org/getSupportProvince"

4 回复解析：

void XXX::getResponse()
{

// Get a reference to the response message.

const QtSoapMessage &message = http.getResponse();

    // Check if the response is a SOAP Fault message
    if (message.isFault())
    {
        m_pWeatherEdt->append(message.faultString().value().toString().toLatin1().constData());
    }
    else
    {
        // Get the return value, and print the result.
        const QtSoapType &response = message.returnValue();
        m_pWeatherEdt->append(response["Country"].value().toString().toLatin1().constData());
        m_pWeatherEdt->append(response["Pop"].value().toString().toLatin1().constData());
        m_pWeatherEdt->append(response["Date"].value().toString().toLatin1().constData());
    }
}

以上方法只能解析固定类型的消息，下面介绍一种通用方法：

void XXX::getResponse()
{

// Get a reference to the response message.
const QtSoapMessage &message = http.getResponse();

        //将返回的结构体转换成QtSoapStruct
        for (int i = 0; i < myStruct.count(); i++)
        {
            m_pWeatherEdt->append(myStruct[i].typeName() + " : " + myStruct[i].toString());
        }

}
}

第二种解析方法参考文档：http://hi.baidu.com/sungaoyong/blog/item/76d9beef0983503762d09fce.html/cmtid/aa176588dfdf021cc8fc7a83

http://blog.chinaunix.net/uid-20718335-id-364410.html