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gsoap - gsoap calc++ 示例以错误告终

问题描述

在查看此处给出的教程https://www.genivia.com/examples/calc++/index.html后，我正在尝试构建 calc++，但最终出现错误，如下所示。

这是我遵循的步骤

  1. wsdl2h -o calc.h http://www.genivia.com/calc.wsdl [这创建了头文件，我不确定要做什么文件“typemap.dat”文件，所以我继续第二步]

  2. soapcpp2 -j -r -CL calc.h [这会生成所需的文件，我下载了 calcclient.cpp ，将 stdsoap2.h 和 stdsoap2.cpp 复制到同一个文件夹中]

  3. g++ -o calcclient calcclient.cpp stdsoap2.cpp soapC.cpp soapcalcProxy.cpp 【此步骤结束，报错如下图】

任何人都可以帮助我解决这个问题，我对 gsoap 完全陌生，并试图用它来构建一些东西，所以我决定从 gsoap 示例开始，但遇到了这个大错误。我在 Ubuntu 中执行此操作，并按照教程中给出的确切步骤进行操作。请检查下面的错误

calcclient.cpp: In function ‘int main(int, char**)’:
calcclient.cpp:58:29: error: no matching function for call to ‘calcProxy::add(double&, double&, double*)’
   calc.add(a, b, &result);
                         ^
In file included from calcclient.cpp:41:0:
soapcalcProxy.h:74:21: note: candidate: virtual int calcProxy::add(double, double, double&)
     virtual int add(double a, double b, double &result)
                 ^
soapcalcProxy.h:74:21: note:   no known conversion for argument 3 from ‘double*’ to ‘double&’
soapcalcProxy.h:76:21: note: candidate: virtual int calcProxy::add(const char*, const char*, double, double, double&)
     virtual int add(const char *soap_endpoint, const char *soap_action, double a, double b, double &result);
                 ^
soapcalcProxy.h:76:21: note:   candidate expects 5 arguments, 3 provided
calcclient.cpp:61:29: error: no matching function for call to ‘calcProxy::sub(double&, double&, double*)’
   calc.sub(a, b, &result);
                         ^
In file included from calcclient.cpp:41:0:
soapcalcProxy.h:78:21: note: candidate: virtual int calcProxy::sub(double, double, double&)
     virtual int sub(double a, double b, double &result)
                 ^
soapcalcProxy.h:78:21: note:   no known conversion for argument 3 from ‘double*’ to ‘double&’
soapcalcProxy.h:80:21: note: candidate: virtual int calcProxy::sub(const char*, const char*, double, double, double&)
     virtual int sub(const char *soap_endpoint, const char *soap_action, double a, double b, double &result);
                 ^
soapcalcProxy.h:80:21: note:   candidate expects 5 arguments, 3 provided
calcclient.cpp:64:29: error: no matching function for call to ‘calcProxy::mul(double&, double&, double*)’
   calc.mul(a, b, &result);
                         ^
In file included from calcclient.cpp:41:0:
soapcalcProxy.h:82:21: note: candidate: virtual int calcProxy::mul(double, double, double&)
     virtual int mul(double a, double b, double &result)
                 ^
soapcalcProxy.h:82:21: note:   no known conversion for argument 3 from ‘double*’ to ‘double&’
soapcalcProxy.h:84:21: note: candidate: virtual int calcProxy::mul(const char*, const char*, double, double, double&)
     virtual int mul(const char *soap_endpoint, const char *soap_action, double a, double b, double &result);
                 ^
soapcalcProxy.h:84:21: note:   candidate expects 5 arguments, 3 provided
calcclient.cpp:67:29: error: no matching function for call to ‘calcProxy::div(double&, double&, double*)’
   calc.div(a, b, &result);
                         ^
In file included from calcclient.cpp:41:0:
soapcalcProxy.h:86:21: note: candidate: virtual int calcProxy::div(double, double, double&)
     virtual int div(double a, double b, double &result)
                 ^
soapcalcProxy.h:86:21: note:   no known conversion for argument 3 from ‘double*’ to ‘double&’
soapcalcProxy.h:88:21: note: candidate: virtual int calcProxy::div(const char*, const char*, double, double, double&)
     virtual int div(const char *soap_endpoint, const char *soap_action, double a, double b, double &result);
                 ^
soapcalcProxy.h:88:21: note:   candidate expects 5 arguments, 3 provided
calcclient.cpp:70:29: error: no matching function for call to ‘calcProxy::pow(double&, double&, double*)’
   calc.pow(a, b, &result);
                         ^
In file included from calcclient.cpp:41:0:
soapcalcProxy.h:90:21: note: candidate: virtual int calcProxy::pow(double, double, double&)
     virtual int pow(double a, double b, double &result)
                 ^
soapcalcProxy.h:90:21: note:   no known conversion for argument 3 from ‘double*’ to ‘double&’
soapcalcProxy.h:92:21: note: candidate: virtual int calcProxy::pow(const char*, const char*, double, double, double&)
     virtual int pow(const char *soap_endpoint, const char *soap_action, double a, double b, double &result);
                 ^
soapcalcProxy.h:92:21: note:   candidate expects 5 arguments, 3 provided

标签： gsoap

解决方案

也许您将一个或多个参数作为指针传递。正确的代理调用应如下所示：

#include "soapcalcProxy.h"
#include "calc.nsmap"

  double a, b, result;
  calcProxy calc("http://server.com/path");
  a = 1.23;
  b = 4.56;
  int err = calc.add(a, b, result);

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