1、下载gSOAP
  在gSOAP官网中可以找到最新的gSOAP安装包以及相关的文档
  gSOAP官网：http://www.cs.fsu.edu/~engelen/soap.html
  gSOAP下载地址：http://sourceforge.net/projects/gsoap2/
2、安装gSOAP
  a、解压zip压缩包
  命令：unzip gsoap_2.7.17.zip
  b、进入解压后生成的文件夹gsoap-2.7
  命令：cd gsoap-2.7/
  c、切换到root用户
  命令：su
  输入密码
  d、配置编译环境
  在gsoap-2.7/文件夹下有一个configure文件，执行它，自动配置编译环境
  命令：./configure
  e、编译连接
  命令：make
  f、安装gSOAP
  命令：make install
  可用wsdl2h或者soapcpp2查看gSOAP是否已经安装成功
  用命令whereis gsoap查看gSOAP安装到的位置
3、编写calc.h文件
  a、新建一个文件夹calc
    命令：mkdir calc
  b、进入calc
    命令：cd calc
  c、创建文件calc.h,在文件中写入以下内容，保存
    //gsoap ns service name: calc Simple calculator service
    //gsoap ns service style: rpc
    //gsoap ns service encoding: encoded
    //gsoap ns service namespace: http://localhost/calc.wsdl
    //gsoap ns service location: http://localhost/server.cgi
    //gsoap ns schema namespace: urn:calc
    int ns__add(double a, double b, double *result);
    int ns__sub(double a, double b, double *result);
    int ns__mul(double a, double b, double *result);
    int ns__div(double a, double b, double *result);
    int ns__pow(double a, double b, double *result);

  注意：
    a、以上的几行注释中，gsoap ns service不能删除，但可以修改
    b、ns__add等的ns后面是两个下划线
4、调用soapcpp2自动生成相关的文件
  (为了方便代码管理，在calc文件夹下新建一个soap)
  当前工作目录为calc/soap
  命令：soapcpp2 -i ../calc.h

  注意：
    可能会报错，一般是不知道gsoap相关include文件的位置，可以使用
    命令soapcpp2 -i ../calc.h -I /usr/include/gsoap
5、编写服务器端代码：server.cpp
  当前工作目录：calc
  #include "soap/soapcalcService.h"
  #include <iostream>
  using namespace std;

  int main(int argc, char **argv) {
    calcService calc;
    int port = 65531;

    if (calc.run(port)) {
      cerr << "Calc service run failed" << endl;
      exit(0);
    }
    return 0;
  }

  int calcService::add(double a, double b, double* result) {
    *result = a + b;
    return SOAP_OK;
  }

  int calcService::sub(double a, double b, double* result) {
    *result = a - b;
    return SOAP_OK;
  }

  int calcService::mul(double a, double b, double* result) {
    *result = a * b;
    return SOAP_OK;
  }

  int calcService::div(double a, double b, double* result) {
    if (b) {
      *result = a / b;
    } else {
      return SOAP_FAULT;
    }
    return SOAP_OK;
  }

  int calcService::pow(double a, double b, double *result) {
    *result = ::pow(a, b);
    if (soap_errno == EDOM) {
      char *s = (char*) soap_malloc(this, 1024);
      sprintf(s, "Can't take the power of %f to %f", a, b);
      sprintf(s,"<error xmlns=\"http://tempuri.org/\">Can't take power of %f to %f</error>",a, b);
      return SOAP_FAULT;
    }
    return SOAP_OK;
  }

6、编写客户端代码：client.cpp
  #include "soap/soapcalcProxy.h"
  #include "soap/calc.nsmap"
  #include <iostream>
  using namespace std;

  int main(int argc, char **argv) {
    double a = 4;
    double b = 2;
    double result;
    calcProxy calc;
    calc.soap_endpoint = "http://localhost:65531";
    calc.add(a,b,&result);
    cout<<a<<"+"<<b<<"="<<result<<endl;
    calc.sub(a,b,&result);
    cout<<a<<"-"<<b<<"="<<result<<endl;
    calc.mul(a,b,&result);
    cout<<a<<"*"<<b<<"="<<result<<endl;
    calc.div(a,b,&result);
    cout<<a<<"/"<<b<<"="<<result<<endl;
    calc.pow(a,b,&result);
    cout<<a<<"^"<<b<<"="<<result<<endl;
    return 0;
  }

7、编写Makefile文件:makefile、sources.mk、subdir.mk、soap/subdir.mk、objects.mk
  新建bin文件夹
  当前工作目录：calc/bin
  #文件：makefile
  RM := rm -rf

  # 引入相关的生成文件
  -include sources.mk
  -include subdir.mk
  -include soap/subdir.mk
  -include objects.mk

  ifneq ($(MAKECMDGOALS),clean)
  ifneq ($(strip $(C++_DEPS)),)
  -include $(C++_DEPS)
  endif
  ifneq ($(strip $(C_DEPS)),)
  -include $(C_DEPS)
  endif
  ifneq ($(strip $(CC_DEPS)),)
  -include $(CC_DEPS)
  endif
  ifneq ($(strip $(SERVER_CPP_DEPS)),)
  -include $(SERVER_CPP_DEPS)
  endif
  ifneq ($(strip $(CLIENT_CPP_DEPS)),)
  -include $(CLIENT_CPP_DEPS)
  endif
  ifneq ($(strip $(CXX_DEPS)),)
  -include $(CXX_DEPS)
  endif
  ifneq ($(strip $(C_UPPER_DEPS)),)
  -include $(C_UPPER_DEPS)
  endif
  endif

  # 生成目标
  all: server client

  # 相关工具
  server: $(SERVER_OBJS) $(USER_OBJS)
    @echo '创建目标: $@'
    g++  -o"server" $(SERVER_OBJS) $(USER_OBJS) $(LIBS)
    @echo '完成创建目标: $@'
    @echo "\n"

  client: $(CLIENT_OBJS) $(USER_OBJS)
    @echo '创建目标: $@'
    g++  -o"client" $(CLIENT_OBJS) $(USER_OBJS) $(LIBS)
    @echo '完成创建目标: $@'
    @echo "\n"

  # 清空临时文件
  clean:
    -$(RM) $(SERVER_OBJS)$(CLIENT_OBJS)$(C++_DEPS)$(C_DEPS)$(CC_DEPS)$(SERVER_CPP_DEPS)$(CLIENT_CPP_DEPS)$(EXECUTABLES)$(CXX_DEPS)$(C_UPPER_DEPS)
    -@echo "\n"
  cleanall:
    -$(RM) $(SERVER_OBJS)$(CLIENT_OBJS)$(C++_DEPS)$(C_DEPS)$(CC_DEPS)$(SERVER_CPP_DEPS)$(CLIENT_CPP_DEPS)$(EXECUTABLES)$(CXX_DEPS)$(C_UPPER_DEPS) server client
    -@echo "\n"
  cleanexe:
    -$(RM) server client
    -@echo "\n"

  .PHONY: all clean dependents cleanall cleanexe
=====================================================================================================
  #文件：sources.mk
  O_SRCS := 
  SERVER_CPP_SRCS := 
  CLIENT_CPP_SRCS :=
  C_UPPER_SRCS := 
  C_SRCS := 
  S_UPPER_SRCS := 
  OBJ_SRCS := 
  ASM_SRCS := 
  CXX_SRCS := 
  C++_SRCS := 
  CC_SRCS := 
  SERVER_OBJS := 
  CLIENT_OBJS :=
  C++_DEPS := 
  C_DEPS := 
  CC_DEPS := 
  SERVER_CPP_DEPS := 
  CLIENT_CPP_SRCS :=
  EXECUTABLES := 
  CXX_DEPS := 
  C_UPPER_DEPS := 

  # 子目录
  SUBDIRS := \
  soap \
  . \
=====================================================================================================
  #文件：sources.mk
  O_SRCS := 
  SERVER_CPP_SRCS := 
  CLIENT_CPP_SRCS :=
  C_UPPER_SRCS := 
  C_SRCS := 
  S_UPPER_SRCS := 
  OBJ_SRCS := 
  ASM_SRCS := 
  CXX_SRCS := 
  C++_SRCS := 
  CC_SRCS := 
  SERVER_OBJS := 
  CLIENT_OBJS :=
  C++_DEPS := 
  C_DEPS := 
  CC_DEPS := 
  SERVER_CPP_DEPS := 
  CLIENT_CPP_SRCS :=
  EXECUTABLES := 
  CXX_DEPS := 
  C_UPPER_DEPS := 

  # 子目录
  SUBDIRS := \
  soap \
  . \

=====================================================================================================
  #文件：subdir.mk
  # 生成的相关参数
  SERVER_CPP_SRCS += \
  ../server.cpp

  SERVER_OBJS += \
  ./server.o 

  SERVER_CPP_DEPS += \
  ./server.d 

  CLIENT_CPP_SRCS += \
  ../client.cpp

  CLIENT_OBJS += \
  ./client.o 

  CLIENT_CPP_DEPS += \
  ./client.d 

  # 根据.cpp文件生成.o文件
  %.o: ../%.cpp
    @echo '创建目标: $<'
    g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -o"$@" "$<"
    @echo '完成创建目标: $<'
    @echo "\n"
=====================================================================================================
  #文件：soap/subdir.mk
  # 生成的相关参数
  SERVER_CPP_SRCS += \
  ../soap/soapC.cpp \
  ../soap/soapcalcService.cpp \
  /usr/include/gsoap/stdsoap2.cpp

  SERVER_OBJS += \
  ./soap/soapC.o \
  ./soap/soapcalcService.o \
  ./soap/stdsoap2.o

  SERVER_CPP_DEPS += \
  ./soap/soapC.d \
  ./soap/soapcalcService.d \
  ./soap/stdsoap2.d 

  CLIENT_CPP_SRCS += \
  ../soap/soapC.cpp \
  ../soap/soapcalcProxy.cpp \
  /usr/include/gsoap/stdsoap2.cpp

  CLIENT_OBJS += \
  ./soap/soapC.o \
  ./soap/soapcalcProxy.o \
  ./soap/stdsoap2.o

  CLIENT_CPP_DEPS += \
  ./soap/soapC.d \
  ./soap/soapcalcProxy.d \
  ./soap/stdsoap2.d 

  # 根据.cpp文件生成.o文件
  soap/%.o: ../soap/%.cpp
    @echo '创建目标: $<'
    g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -o"$@" "$<"
    @echo '完成创建目标: $<'
    @echo "\n"

  soap/%.o:/usr/include/gsoap/%.cpp
    @echo '创建目标: $<'
    g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"$(@:%.o=%.d)" -MT"$(@:%.o=%.d)" -o"$@" "$<"
    @echo '完成创建目标: $<'
    @echo "\n"
=====================================================================================================
  #文件：objects.mk
  USER_OBJS :=

  LIBS :=
8、编译
  当前工作目录：calc/bin
  make
9、开启服务端
  ./server
10、开启客户端
  ./client
11、文件总览(3个目录, 42个文件)
  calc            // 根目录
  |-- bin           // 文件夹,存放makefile,以及生成的.o、.d、可执行文件
  |   |-- client
  |   |-- client.d
  |   |-- client.o
  |   |-- makefile
  |   |-- objects.mk
  |   |-- server
  |   |-- server.d
  |   |-- server.o
  |   |-- soap
  |   |   |-- soapcalcProxy.d
  |   |   |-- soapcalcProxy.o
  |   |   |-- soapcalcService.d
  |   |   |-- soapcalcService.o
  |   |   |-- soapC.d
  |   |   |-- soapC.o
  |   |   |-- stdsoap2.d
  |   |   |-- stdsoap2.o
  |   |   `-- subdir.mk
  |   |-- sources.mk
  |   `-- subdir.mk
  |-- calc.h          // calc.h
  |-- client.cpp        // 客户端
  |-- server.cpp        // 服务器端
  `-- soap          // 该文件夹存放命令soapcpp2 -i ../calc.h生成的文件
    |-- calc.add.req.xml
    |-- calc.add.res.xml
    |-- calc.div.req.xml
    |-- calc.div.res.xml
    |-- calc.mul.req.xml
    |-- calc.mul.res.xml
    |-- calc.nsmap
    |-- calc.pow.req.xml
    |-- calc.pow.res.xml
    |-- calc.sub.req.xml
    |-- calc.sub.res.xml
    |-- calc.wsdl
    |-- ns.xsd
    |-- soapcalcProxy.cpp
    |-- soapcalcProxy.h
    |-- soapcalcService.cpp
    |-- soapcalcService.h
    |-- soapC.cpp
    |-- soapH.h
    `-- soapStub.h