网上本有一篇流传甚广的C版本的，我参考来实现，发现有不少问题，现在根据自己的开发经验将其修改，使用无误；另外，补充同样功能的C++版本，我想这个应该更有用，因为能用C++，当然好过受限于C。
1、gSOAP的安装：
到http://sourceforge.net/projects/gsoap2/去下载最新版本，目前是：2.7.15
简单安装：
configure --prefix=/usr/local/gSOAP
make
make install
为了后面的C和C++版本的服务和客户端的开发能够脱离源代码目录，最好还要如下处理：
（1）将源代码目录下gsoap子目录中的import目录拷贝到gSOAP目录下来；
（2）gSOAP目录下建一个env目录，将gsoap/samples/link下的所有文件拷贝过来，并且生成envC.o（C版本要用到），方法是：
/usr/local/gSOAP/bin/soapcpp2 -penv -c env.h
g++ -c -I /usr/local/gSOAP/include envC.c
（3）gSOAP目录下建一个src目录，将将源代码目录下gsoap子目录中的stdsoap*.*拷贝过来。
2、功能说明：
要开发的Web Service功能非常简单，就是一个add函数，将两个参数相加，返回其和。
3、C版本的程序:
（1）头文件：SmsWBS.h
//gsoap ns service name: SmsWBS
//gsoap ns service style: rpc
//gsoap ns service namespace: http://192.168.1.88:9000/SmsWBS.wsdl
//gsoap ns service location: http://192.168.1.88:9000
//gsoap ns service encoding: encoded
//gsoap ns schema namespace: urn:SmsWBS
int ns__add(int num1, int num2, int *sum);
这个头文件需要注意的是，前面的 // 部分是有意义的，可以在上面修改，如果完全去掉，将会导致生成的中间文件不同，由此会引起要修改Makefile文件
（2）Makefile文件：
比较关键，如果头文件中的 // 部分有修改，要检查是否要修改Makefile文件
GSOAP_ROOT=/usr/local/gSOAP
WSNAME0=soap
WSNAME=SmsWBS
CC=g++ -g -DWITH_NONAMESPACES
INCLUDE=-I $(GSOAP_ROOT)/include
SERVER_OBJS=$(WSNAME0)C.o $(WSNAME0)Server.o stdsoap2.o
CLIENT_OBJS=$(GSOAP_ROOT)/env/envC.o $(WSNAME0)ClientLib.o stdsoap2.o
ALL_OBJS=${WSNAME}server.o $(WSNAME0)C.o $(WSNAME0)Server.o ${WSNAME}test.o $(WSNAME0)ClientLib.o
#GSOAP_SRC=/usr/local/gsoap-2.7/gsoap
all:server
${WSNAME}.wsdl:${WSNAME}.h
$(GSOAP_ROOT)/bin/soapcpp2 -c $(GSOAP_ROOT)/import ${WSNAME}.h
stdsoap2.o:$(GSOAP_ROOT)/src/stdsoap2.c
$(CC) -c $? $(INCLUDE)
$(ALL_OBJS):%.o:%.c
$(CC) -c $? $(INCLUDE)
server:Makefile ${WSNAME}.wsdl ${WSNAME}server.o $(SERVER_OBJS)
$(CC) ${WSNAME}server.o $(SERVER_OBJS) -o ${WSNAME}server
client:Makefile ${WSNAME}.wsdl ${WSNAME}test.c $(ALL_OBJS) stdsoap2.o
$(CC) ${WSNAME}test.o $(CLIENT_OBJS) -o ${WSNAME}test
clean:
rm -f *.o *.xml *.a *.wsdl *.nsmap $(WSNAME0)H.h $(WSNAME0)C.c $(WSNAME0)Server.c $(WSNAME0)Client.c $(WSNAME0)Stub.* $(WSNAME)$(WSNAME)Proxy.* $(WSNAME)$(WSNAME)Object.* $(WSNAME0)ServerLib.c $(WSNAME0)ClientLib.c $(WSNAME)server ns.xsd $(WSNAME)test
（3）服务端程序SmsWBSserver.c：
#include "soapH.h"
#include "SmsWBS.nsmap"
int main(int argc, char **argv)
{
int m, s; /* master and slave sockets */
struct soap SmsWBS_soap;
soap_init(&SmsWBS_soap);
soap_set_namespaces(&SmsWBS_soap, namespaces);
if (argc < 2)
{
printf("usage: %s <server_port> \n", argv[0]);
exit(1);
}
else
{
m = soap_bind(&SmsWBS_soap, NULL, atoi(argv[1]), 100);
if (m < 0)
{
soap_print_fault(&SmsWBS_soap, stderr);
exit(-1);
}
fprintf(stderr, "Socket connection successful: master socket = %d\n", m);
for (;;)
{
s = soap_accept(&SmsWBS_soap);
if (s < 0)
{
soap_print_fault(&SmsWBS_soap, stderr);
exit(-1);
}
fprintf(stderr, "Socket connection successful: slave socket = %d\n", s);
soap_serve(&SmsWBS_soap);
soap_end(&SmsWBS_soap);
}
}
return 0;
}
int ns__add(struct soap *add_soap, int num1, int num2, int *sum)
{
*sum = num1 + num2;
return 0;
}
（4）客户端程序SmsWBStest.c：
#include <stdio.h>
#include <stdlib.h>
#include "soapStub.h"
#include "SmsWBS.nsmap"
int add(const char *server, int num1, int num2, int *sum);
int add(const char *server, int num1, int num2, int *sum)
{
struct soap SmsWBS_soap;
int result = 0;
soap_init(&SmsWBS_soap);
soap_set_namespaces(&SmsWBS_soap, namespaces);
soap_call_ns__add(&SmsWBS_soap, server, "", num1, num2, sum);
if(SmsWBS_soap.error)
{
printf("soap error:%d, %s, %s ", SmsWBS_soap.error, *soap_faultcode(&SmsWBS_soap), *soap_faultstring(&SmsWBS_soap));
result = SmsWBS_soap.error;
}
soap_end(&SmsWBS_soap);
soap_done(&SmsWBS_soap);
return result;
}
int main(int argc, char **argv)
{
int result = -1;
char* server="http://localhost:9000";
int num1 = 0;
int num2 = 0;
int sum = 0;
if( argc < 3 )
{
printf("usage: %s num1 num2 \n", argv[0]);
exit(0);
}
num1 = atoi(argv[1]);
num2 = atoi(argv[2]);
result = add(server, num1, num2, &sum);
if (result != 0)
{
printf("soap err, errcode = %d \n", result);
}
else
{
printf("%d + %d = %d \n", num1, num2, sum);
}
return 0;
}
（5）编译和运行：
前面都已经准备好了，现在只需要：
make ---得到服务端程序SmsWBSserver
make client ---得到客户端程序SmsWBStest
SmsWBSserver 9000 ----运行服务端程序
出来类似下面的显示就表示运行正常
Socket connection successful: master socket = 3
再运行客户端程序：
SmsWBStest 67 78
显示：
67 + 78 = 145
调用Web Service成功
接（一）
4、C++版本的程序:
（1）头文件不变，还是SmsWBS.h
（2）Makefile文件：
GSOAP_ROOT=/usr/local/gSOAP
WSNAME0=soap
WSNAME=SmsWBS
CC=g++ -g -DWITH_NONAMESPACES
INCLUDE=-I $(GSOAP_ROOT)/include
SERVER_OBJS=$(WSNAME0)C.o $(WSNAME0)$(WSNAME)Service.o stdsoap2.o
CLIENT_OBJS=$(WSNAME0)$(WSNAME)Proxy.o $(WSNAME0)C.o stdsoap2.o
ALL_OBJS=${WSNAME}server.o $(WSNAME0)C.o $(WSNAME0)$(WSNAME)Service.o $(WSNAME0)$(WSNAME)Proxy.o ${WSNAME}test.o
#GSOAP_SRC=/usr/local/gsoap-2.7/gsoap
all:server
${WSNAME}.wsdl:${WSNAME}.h
$(GSOAP_ROOT)/bin/soapcpp2 -i $(GSOAP_ROOT)/import ${WSNAME}.h
stdsoap2.o:$(GSOAP_ROOT)/src/stdsoap2.cpp
$(CC) -c $? $(INCLUDE)
$(ALL_OBJS):%.o:%.cpp
$(CC) -c $? $(INCLUDE)
server:Makefile ${WSNAME}.wsdl ${WSNAME}server.o $(SERVER_OBJS)
$(CC) ${WSNAME}server.o $(SERVER_OBJS) -o ${WSNAME}server
client:Makefile ${WSNAME}.wsdl ${WSNAME}test.cpp $(ALL_OBJS) stdsoap2.o
$(CC) ${WSNAME}test.o $(CLIENT_OBJS) -o ${WSNAME}test
clean:
rm -f *.o *.xml *.a *.wsdl *.nsmap $(WSNAME0)H.h $(WSNAME0)C.cpp $(WSNAME0)Server.cpp $(WSNAME0)Stub.* $(WSNAME0)$(WSNAME)S
ervice.* $(WSNAME0)$(WSNAME)Proxy.* $(WSNAME0)$(WSNAME)Object.* $(WSNAME0)ServerLib.cpp $(WSNAME0)ClientLib.cpp $(WSNAME)server ns.x
sd $(WSNAME)test
（3）服务端程序SmsWBSserver.cpp：
#include "soapSmsWBSService.h"
#include "SmsWBS.nsmap"
int main(int argc, char **argv)
{
SmsWBSService sms;
if (argc < 2)
sms.serve(); /* serve as CGI application */
else
{
int port = atoi(argv[1]);
if (!port)
{
fprintf(stderr, "Usage: SmsWBSserver++ <port>\n");
exit(0);
}
/* run iterative server on port until fatal error */
if (sms.run(port))
{
sms.soap_stream_fault(std::cerr);
exit(-1);
}
}
return 0;
}
int SmsWBSService::add(int num1, int num2, int *sum)
{
*sum = num1 + num2;
return SOAP_OK;
}
（4）客户端程序SmsWBStest.cpp：
#include <stdio.h>
#include <stdlib.h>
#include "soapSmsWBSProxy.h"
#include "SmsWBS.nsmap"
int main(int argc, char **argv)
{
int result = -1;
char* server="http://localhost:9000";
int num1 = 0;
int num2 = 0;
int sum = 0;
if( argc < 3 )
{
printf("usage: %s num1 num2 \n", argv[0]);
exit(0);
}
num1 = atoi(argv[1]);
num2 = atoi(argv[2]);
SmsWBSProxy sms;
result = sms.add(num1, num2, &sum);
if (result != 0)
{
printf("soap err, errcode = %d \n", result);
}
else
{
printf("%d + %d = %d \n", num1, num2, sum);
}
return 0;
}
（5）编译运行，与C版本类似，只是服务端运行时没有提示信息
续（三）
接（二）
5、方便其它平台调用Web Service服务所需要做的工作:
以上的C和C++版本的Web Service服务端运行后，在本机或者其它机（windows系统也一样）浏览器中输入http://192.168.1.88:9000/SmsWBS?wsdl，会返回XML文件内容，但是并无Web Service的功能函数描述，原因是尚未实现允许客户端通过http的get操作来获取 SmsWBS.wsdl文件。因此，需要补充实现这一部分，以C++版本为例，完善后的SmsWBSserver.cpp程序是：
#include "soapSmsWBSService.h"
#include "SmsWBS.nsmap"
int http_get(struct soap * soap);
int main(int argc, char **argv)
{
SmsWBSService sms;
if (argc < 2)
sms.serve(); /* serve as CGI application */
else
{
int port = atoi(argv[1]);
if (!port)
{
fprintf(stderr, "Usage: SmsWBSserver++ <port>\n");
exit(0);
}
/* run iterative server on port until fatal error */
sms.fget = http_get;
if (sms.run(port))
{
sms.soap_stream_fault(std::cerr);
exit(-1);
}
}
return 0;
}
int SmsWBSService::add(int num1, int num2, int *sum)
{
*sum = num1 + num2;
return SOAP_OK;
}
//能够远程读取wsdl文件
int http_get(struct soap * soap)
{
FILE *fd = NULL;
char *s = strchr(soap->path, '?');
if (!s || strcmp(s, "?wsdl"))
return SOAP_GET_METHOD;
fd = fopen("SmsWBS.wsdl", "rb");
if (!fd)
return 404;
soap->http_content = "text/xml";
soap_response(soap, SOAP_FILE);
for (;;)
{
size_t r = fread(soap->tmpbuf, 1, sizeof(soap->tmpbuf), fd);
if (!r)
break;
if (soap_send_raw(soap, soap->tmpbuf, r))
break;
}
fclose(fd);
soap_end_send(soap);
return SOAP_OK;
}
重新将服务端编译，运行后http://192.168.1.88:9000/SmsWBS?wsdl能够获取到完整的SmsWBS.wsdl。
至此，可以在windows下的VC++.Net项目中通过“添加WEB 引用”来方便地生成客户端类文件，从而调用Web Service服务端的功能。