c++ .net winform 应用程序调用dll（gSOAP调用WebService）获取天气

来源：互联网发布：java监听器原理编辑：程序博客网时间：2024/05/16 13:59

c++ .net winform 应用程序中没有“添加web引用”的选项来调用webservice，困扰了好久，在参考了http://jingyan.baidu.com/article/295430f1d4de8e0c7e00508f.html 方法的基础上，终于有了解决方案！

1.下载开源的gSOAP。
2.下载天气预报wsdl文件。
保存为.wsdl文件
3.利用gSOAP创建一系列c++调用的文件。
生成.h文件
生成其他文件
生成后的所有文件
4.打开vs2010 ，新建项目（控制台程序）。
5.将第3步生成的所有文件连同gSOAP目录下的两个文件stdsoap2.h，stdsoap2.cpp加入新建的项目中。
6.main.cpp文件中代码如下:

#include "stdafx.h"#include <stdio.h>#include "soapH.h" #include "WeatherWSSoap.nsmap"#include "soapWeatherWSSoapProxy.h"using namespace std;void GB2312_ToUtf8(char* pstrOut,int dwOutLen,const char* pstrIn,int dwInLen){    int i = MultiByteToWideChar(CP_ACP, 0, pstrIn, -1, NULL, 0);         wchar_t* strSrc = new wchar_t[i+1];      MultiByteToWideChar(CP_ACP, 0, pstrIn, -1, strSrc, i);      i = WideCharToMultiByte(CP_UTF8, 0, strSrc, -1, NULL, 0, NULL, NULL);      if (i >= dwOutLen)    {        i = dwOutLen - 1;    }       WideCharToMultiByte(CP_UTF8, 0, strSrc, -1, pstrOut, i, NULL, NULL);      delete strSrc;        }void Utf8ToGb2312(char* pstrOut,int dwOutLen,const char* pstrIn,int dwInLen){    if (NULL == pstrOut)    {        return;    }    int i = MultiByteToWideChar(CP_UTF8,0,pstrIn,-1,NULL,0);    wchar_t* strSrc = new wchar_t[i+1];      MultiByteToWideChar(CP_UTF8,0,pstrIn,-1,strSrc,i);    i = WideCharToMultiByte(CP_ACP, 0, strSrc, -1, NULL, 0, NULL, NULL);      if (i >= dwOutLen)    {        i = dwOutLen - 1;    }    WideCharToMultiByte(CP_ACP, 0,strSrc,-1,pstrOut,i,NULL,NULL);    delete strSrc;} int _tmain(int argc, _TCHAR* argv[]){       WeatherWSSoapProxy soap(SOAP_C_UTFSTRING);    _ns1__getWeather cityName;    _ns1__getWeatherResponse weatherResponse;       char name[64] = {0};    char name_utf8[64] = {0};    sprintf(name,"2061");    GB2312_ToUtf8(name_utf8,64,name,64);    cityName.theCityCode = name_utf8;       int result = soap.getWeather(NULL,NULL,&cityName,weatherResponse);      if (result == SOAP_OK)    {        ns1__ArrayOfString *aos = weatherResponse.getWeatherResult;        int n = aos->__sizestring;        for (int i = 0; i <n;++i)        {            char out[2048] = {0};            Utf8ToGb2312(out,1024,aos->string[i],strlen(aos->string[i]));            printf("%s\n",out);        }    }}

7.运行成功如下图：
这里写图片描述

8.准备开始写dll文件，vs2010中新建win32应用程序。
弹出的应用程序向导中选择DLL。
9. .h文件和cpp文件代码如下：

//.h 文件#ifndef _WEATHER_H#define _WEATHER_Hvoid getweather(char* out);#endif//.cpp文件#include "stdafx.h"#include <stdio.h>#include "soapH.h" #include "WeatherWSSoap.nsmap"#include "soapWeatherWSSoapProxy.h"using namespace std;void GB2312_ToUtf8(char* pstrOut,int dwOutLen,const char* pstrIn,int dwInLen){    int i = MultiByteToWideChar(CP_ACP, 0, pstrIn, -1, NULL, 0);         wchar_t* strSrc = new wchar_t[i+1];      MultiByteToWideChar(CP_ACP, 0, pstrIn, -1, strSrc, i);      i = WideCharToMultiByte(CP_UTF8, 0, strSrc, -1, NULL, 0, NULL, NULL);      if (i >= dwOutLen)    {        i = dwOutLen - 1;    }       WideCharToMultiByte(CP_UTF8, 0, strSrc, -1, pstrOut, i, NULL, NULL);      delete strSrc;        }void Utf8ToGb2312(char* pstrOut,int dwOutLen,const char* pstrIn,int dwInLen){    if (NULL == pstrOut)    {        return;    }    int i = MultiByteToWideChar(CP_UTF8,0,pstrIn,-1,NULL,0);    wchar_t* strSrc = new wchar_t[i+1];      MultiByteToWideChar(CP_UTF8,0,pstrIn,-1,strSrc,i);    i = WideCharToMultiByte(CP_ACP, 0, strSrc, -1, NULL, 0, NULL, NULL);      if (i >= dwOutLen)    {        i = dwOutLen - 1;    }    WideCharToMultiByte(CP_ACP, 0,strSrc,-1,pstrOut,i,NULL,NULL);    delete strSrc;}void getweather(char* out){    WeatherWSSoapProxy soap(SOAP_C_UTFSTRING);    _ns1__getWeather cityName;    _ns1__getWeatherResponse weatherResponse;       char name[64] = {0};    char name_utf8[64] = {0};    sprintf(name,"2061");    GB2312_ToUtf8(name_utf8,64,name,64);    cityName.theCityCode = name_utf8;       int result = soap.getWeather(NULL,NULL,&cityName,weatherResponse);      if (result == SOAP_OK)    {        ns1__ArrayOfString *aos = weatherResponse.getWeatherResult;        int n = aos->__sizestring;        for (int i = 0; i <n;++i)        {            char out[2048] = {0};            Utf8ToGb2312(out,1024,aos->string[i],strlen(aos->string[i]));            printf("%s\n",out);        }    }}

10.右键项目属性，在配置类型中选择静态库（.lib）后，生成项目。
11.将生成的.lib文件和.h文件加入需要调用dll的工程中。
12.加入下列代码即可调用dll

#include "weather.h"#pragma comment(lib,"weather.lib")

0 0