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  • webservice gsoap 小记

    参考 http://www.cs.fsu.edu/~engelen/soap.html

    1. web service client application

      > wsdl2h -s -o MyHead.h http://www.genivia.com/calc.wsdl

        -s 不用 STL

      > soapcpp2 -i -C MyHead.h

        Option -i (and alternatively option -j) indicates that we want C++ proxy and server objects that include the client (and server) code, -C indicates client-side only 

        soapcpp2 generates both client and server stubs and skeletons by default

      

      这两步过程中可能会出错,要把必要的文件加上: soap12.h  stdsoap2.h  stdsoap2.cpp

      然后,We use the generated soapcalcProxy class and calc.nsmap XML namespace mapping table to access the Web service. The soapcalcProxy class is a proxy to invoke the service:

     1 #include "soapWebService1SoapProxy.h"    // 自动生成的头文件 注:不用MyHead.h
     2 #include "WebService1Soap.nsmap"
     3 
     4 int main()
     5 {
     6     WebService1SoapProxy        service;
     7     _tempuri__GetSum            a;
     8     _tempuri__GetSumResponse    result;
     9     //a.soap = soap_new();
    10     a.a = 1;
    11     a.b = 5;
    12     //result.soap = soap_new();
    13     
    14     if (service.GetSum(&a, &result) == SOAP_OK)
    15         std::cout << "the num of 1 and 5 is " << result.GetSumResult << std::endl;
    16     else
    17         service.soap_stream_fault(std::cerr);
    18     service.destroy();
    19 
    20     getchar();
    21     return 0;
    22 }

      编译

      如果遇到 stdsoap2.obj : error LNK2001: 无法解析的外部符号_namespaces

      参考 http://blog.163.com/lyz_sea/blog/static/115586707201182432412677

      在 stdsoap2.h,添加 

      #ifndef WITH_NONAMESPACES
      #define WITH_NONAMESPACES
      #endif

    2. Develop a Web Service (Stand-Alone Server)

      

    1 // File: currentTime.h 
    2 //gsoap ns service name: currentTime 
    3 //gsoap ns service namespace: urn:currentTime 
    4 //gsoap ns service location: http://www.yourdomain.com/currentTime.cgi 
    5 int ns__currentTime(time_t& response);

      > soapcpp2 -i -S currentTime.h

      

    // File: currentTime.cpp
    #include "soapcurrentTimeService.h" // include the proxy declarations
    #include "currentTime.nsmap" // include the XML namespace mappings
    int main()
    {
        // create server and serve on CGI-based request:
        currentTimeService    server;
        /*server.serve();
        server.destroy();
        */
    
        while (server.run(65533) != SOAP_TCP_ERROR)
        {
            server.soap_stream_fault(std::cerr);
        }
    
        return 0;
    }
    
    int currentTimeService::currentTime(time_t& response)
    {
        response = time(0);
        return SOAP_OK;
    }

      Compile with  currentTime.cpp  soapC.cpp  soapcurrentTimeService.cpp  stdsoap2.cpp

      

      run

      然后可以由 wsdl 文件生成客户端头文件,and ...

    3. C# 调用 gsoap 的 service

      参考 http://blog.sina.com.cn/s/blog_4e7d38260100ade4.html

      用 VS 自带的 wsdl.exe (在 C 盘的某个角落)

      > wsdl.exe currentTime.wsdl

      生成 currentTime.cs

      将 currentTime.cs 放到 C# 的工程中,研究下代码结构,找到 currentTime 的初始化函数:

    1     public picture() {
    2         this.Url = "http://localhost:65432/picture.cgi"; // 改成你的地址  
    3     }

      OK,可以用了。

    4. 如果要发送 二进制数据,可先将其进行编码(暂时采用 base64 编码,实际场景中应采用更合适的编码算法),以 string 形式发送。接收端再进行相应解码。

      C++ gsoap service 端,读取图片:

      

     1 int pictureService::picture(struct picdata &picture)
     2 {
     3     char *pic = NULL;
     4     unsigned int length = 0;
     5 
     6     std::ifstream is("chicken.jpg", std::ios::binary);
     7     if (is)
     8     {
     9         is.seekg(0, is.beg);
    10         is.seekg(0, is.end); 
    11         length = is.tellg();
    12         is.seekg(0, is.beg);
    13 
    14         pic = new char[length];
    15 
    16         if (pic == NULL)
    17             return SOAP_ERR;
    18         
    19         is.read(pic, length);
    20         is.close();
    21     }
    22 
    23     picture.data = base64_encode((unsigned char*)pic, length);
    24 
    25     if (pic != NULL)
    26     {
    27         delete pic;
    28         pic = NULL;
    29     }
    30 
    31     return SOAP_OK;
    32 }

      C# 端,调用 webservice,获取一张图片,并保存:

     1     picture pic = new picture();
     2     picture1 pic1 = new picture1();
     3     pictureResponse res = pic.Callpicture(pic1);
     4 
     5     string strData = res.picture.data;
     6     byte[] bytes = Convert.FromBase64String(strData);
     7 
     8     FileStream fs = new FileStream("D:\\picture.jpg", FileMode.OpenOrCreate);
     9     fs.Write(bytes, 0, bytes.Length);
    10     fs.Close();

       以上代码,有待优化。

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  • 原文地址:https://www.cnblogs.com/hangj/p/3620406.html
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