gSOAP是一个夸平台的，用于开发Web Service服务端和客户端的工具，在Windows、Linux、MAC OS和UNIX下使用C和C++语言编码，集合了SSL功能。
下载地址：http://sourceforge.net/projects/gsoap2
官方网站：http://genivia.com/Products/gsoap/index.html
对于Windows平台下开发客户端，首先下载最新的gsoap_win32_2.7.6c.zip包，具体在以下地址：http://optusnet.dl.sourceforge.net/sourceforge/gsoap2/gsoap_win32_2.7.6c.zip
首先查看gsoap的User's Guide，基本就能对gsoap有个全面的了解，通过阅读Sample里的例子程序深入。然后搜索网上其它一些文章，比如：gSOAP简单多线程服务器程序 http://blog.chinaunix.net/u1/55091/showart_430965.html
纯c gSoap实现WebService http://hi.baidu.com/2sky2sea/blog/item/40ec5555680279c1b745ae9b.html
接下来我结合自己的实践与理解，讲讲VC用gsoap下编写webService和客户端程序，有不对的地方还请大家指正，谢谢。
我以网上出现的实现一个简单的加法函数为例，讲讲我在操作过程中遇到的问题。
一 服务器端
1.首先编写 add.h文件：
1
//gsoap ns service name: add
2//gsoap ns service namespace: http://localhost/add.wsdl
3//gsoap ns service location: http://localhost
4//gsoap ns service executable: add.cgi
5//gsoap ns service encoding: encoded
6//gsoap ns schema namespace: urn:add
7
8int ns__add( int num1, int num2, int* sum );
9
//gsoap ns service name: add2
//gsoap ns service namespace: http://localhost/add.wsdl3
//gsoap ns service location: http://localhost4
//gsoap ns service executable: add.cgi5
//gsoap ns service encoding: encoded6
//gsoap ns schema namespace: urn:add7
8
int ns__add( int num1, int num2, int* sum );9
2.用gsoap/bin目录下的soapcpp2.exe程序，生成一些文件。可以把soapcpp2.exe拷贝到一add.h目录下，用cmd执行soapcpp2.exe add.h就可以，在这个目录下会自动生成许多将来有用的文件，如add.namap,soapH.h,soapC.cpp,soapClient.cpp,soapServer.cpp等文件。soapcpp2.exe可以带参数执行，具体执行soapcpp2.exe -h查看。
3.新建一个win32控制台工程，加入wsock32.lib库，将刚才生成的那些文件添加到工程中。然后编写webserver.cpp主程序：
#include "add.h"#include "add.nsmap"int main(int argc, char* argv[])
{
int m, s; /* master and slave sockets */ struct soap add_soap; soap_init(&add_soap); //soap_set_namespaces(&add_soap, add_namespaces); if (argc < 2) { printf("usage: %s <server_port>
", argv[0]); exit(1);
} else { m = soap_bind(&add_soap, NULL, atoi(argv[1]), 100); if (m < 0) { soap_print_fault(&add_soap, stderr); exit(-1); } fprintf(stderr, "Socket connection successful: master socket = %d
", m); for ( ; ; ) { s = soap_accept(&add_soap); if (s < 0) { soap_print_fault(&add_soap, stderr); exit(-1); } fprintf(stderr, "Socket connection successful: slave socket = %d
", s); soap_serve(&add_soap);//该句说明该server的服务 soap_end(&add_soap); } } return 0;
}//server端的实现函数与add.h中声明的函数相同，但是多了一个当前的soap连接的参数int ns__add(struct soap *add_soap, int num1, int num2, int *sum){ *sum = num1 + num2; return 0;}4. 编译这个程序，会提示错误，将gsoap_win32目录下stdsoap2.cpp，stdsoap2.h文件加入工程，重新编译如果还有错误，可能是你将add.h生成的文件添加入工程出错的原因。实际上在编写server程序时，无须带Client的那些文件，还有带Lib的文件也无须添加到工程中。再重新编译应该就没有问题了，启动4567端口，在ie中输入localhost:4567,如果显示xml页面，说明程序已经启动。
二 对应的客户端
1。客户端程序代码如下:
#include <stdio.h>#include <stdlib.h>#include "soapH.h"#include "add.nsmap"int add(const char* server, int num1, int num2, int *sum);int main(int argc, char **argv) { int result = -1; char* server="http://localhost:4567"; int num1 = 0; int num2 = 0; int sum = 0; if( argc < 3 ) { printf("usage: %s num1 num2
", 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
", result); } else { printf("%d+%d=%d
", num1, num2, sum ); } return 0;}int add( const char* server, int num1, int num2, int *sum ){ struct soap add_soap; int result = 0; soap_init(&add_soap);// soap_set_namespaces(&add_soap, add_namespaces); //该函数是客户端调用的主要函数，后面几个参数和add.h中声明的一样，前面多了3个参数，函数名是接口函数名ns__add前面加上soap_call_ soap_call_ns__add( &add_soap, server, "", num1, num2, sum ); if(add_soap.error) { printf("soap error:%d,%s,%s
", add_soap.error, *soap_faultcode(&add_soap), *soap_faultstring(&add_soap) ); result = add_soap.error; } soap_end(&add_soap); soap_done(&add_soap); return result;}2.客户端程序既可以新建一个新的win32控制台程序，将刚才生成的nsmap,soapH.h,soapClient.h等文件加入工程，编译既可。我是直接在原先工程中加入一客户端代码，将webserver.cpp文件移除，并且将soapServer.cpp等server端需要的文件移除，将soapClient.cpp等client端需要的cpp添加到工程，编译既可。
3.启动server程序，F5客户端程序，经测试正常。
三 遇到的问题
1.server端可以编译成CGI方式执行，而并不是绑定到某个端口，这种方式我没有实践。
if (argc < 2) // no args: assume this is a CGI application { soap_serve(&soap); // serve request, one thread, CGI style soap_destroy(&soap); // dealloc C++ data soap_end(&soap); // dealloc data and clean up }3.多线程方式，在windows下建议用pthread_win32库，这里给出多线程下的例子。
一 gSOAP需要的头文件：//gsoap ns service name: calc//gsoap ns service style: rpc//gsoap ns service encoding: encoded//gsoap ns service namespace: http://127.0.0.1:8089/calc.wsdl//gsoap ns service location: http://127.0.0.1:8089/cal//gsoap ns schema namespace: urn:calcint 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);二 多线程服务器关键代码#include #include "calc.nsmap"#include "soapH.h"////////////////////////////////////////////////////////////////////////////宏与全局变量的定义#define BACKLOG (100) #define MAX_THR (10) #define MAX_QUEUE (1000)pthread_mutex_t queue_cs; //队列锁pthread_cond_t queue_cv; //条件变量SOAP_SOCKET queue[MAX_QUEUE]; //数组队列int head =0, tail =0; //队列头队列尾初始化 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////void * process_queue(void *); //线程入口函数int enqueue(SOAP_SOCKET); //入队列函数SOAP_SOCKET dequeue(void); //出队列函数////////////////////////////////////////////////////////////////////////////线程入口函数void * process_queue(void * soap){ struct soap * tsoap = (struct soap *)soap; for(;;) { tsoap->socket = dequeue(); if (!soap_valid_socket(tsoap->socket)) { break; } soap_serve(tsoap); soap_destroy(tsoap); soap_end(tsoap); } return NULL;}//入队列操作int enqueue(SOAP_SOCKET sock){ int status = SOAP_OK; int next; pthread_mutex_lock(&queue_cs); next = tail +1; if (next >= MAX_QUEUE) next = 0; if (next == head) status = SOAP_EOM; else { queue[tail] =sock; tail = next; } pthread_cond_signal(&queue_cv); pthread_mutex_unlock(&queue_cs); return status;}//出队列操作SOAP_SOCKET dequeue(){ SOAP_SOCKET sock; pthread_mutex_lock(&queue_cs); while (head == tail ) { pthread_cond_wait(&queue_cv,&queue_cs); } sock = queue[head++]; if (head >= MAX_QUEUE) { head =0; } pthread_mutex_unlock(&queue_cs); return sock;}//////////////////////////具体服务方法//////////////////////////////////////////加法的实现int ns__add(struct soap *soap, double a, double b, double *result){ *result = a + b; return SOAP_OK;} //减法的实现int ns__sub(struct soap *soap, double a, double b, double *result){ *result = a - b; return SOAP_OK;} //乘法的实现int ns__mul(struct soap *soap, double a, double b, double *result){ *result = a * b; return SOAP_OK;} //除法的实现int ns__div(struct soap *soap, double a, double b, double *result){ if (b) *result = a / b; else { char *s = (char*)soap_malloc(soap, 1024); sprintf(s, "Can't">http://tempuri.org/">Can't divide %f by %f", a, b); return soap_sender_fault(soap, "Division by zero", s); } return SOAP_OK;} //乘方的实现int ns__pow(struct soap *soap, double a, double b, double *result){ *result = pow(a, b); if (soap_errno == EDOM) /* soap_errno 和errorno类似, 但是和widnows兼容 */ { char *s = (char*)soap_malloc(soap, 1024); sprintf(s, "Can't take the power of %f to %f", a, b); sprintf(s, "Can't">http://tempuri.org/">Can't take power of %f to %f", a, b); return soap_sender_fault(soap, "Power function domain error", s); } return SOAP_OK;} ////////////////////////////////////////////////////////////////////////////////////////////////////////主函数int main(int argc,char ** argv){ struct soap ServerSoap; //初始话运行时环境 soap_init(&ServerSoap); //如果没有参数，当作CGI程序处理 if (argc <2) { //CGI 风格服务请求，单线程 soap_serve(&ServerSoap); //清除序列化的类的实例 soap_destroy(&ServerSoap); //清除序列化的数据 soap_end(&ServerSoap); }else { struct soap * soap_thr[MAX_THR]; pthread_t tid[MAX_THR]; int i,port = atoi(argv[1]); SOAP_SOCKET m,s; //锁和条件变量初始化 pthread_mutex_init(&queue_cs,NULL); pthread_cond_init(&queue_cv,NULL); //绑定服务端口 m = soap_bind(&ServerSoap,NULL,port,BACKLOG); //循环直至服务套接字合法 while (!soap_valid_socket(m)) { fprintf(stderr,"Bind port error! "); m = soap_bind(&ServerSoap,NULL,port,BACKLOG); } fprintf(stderr,"socket connection successful %d ",m); //生成服务线程 for(i = 0; i <MAX_THR; i++) { soap_thr[i] = soap_copy(&ServerSoap); fprintf(stderr,"Starting thread %d ",i); pthread_create(&tid[i],NULL,(void*(*)(void*))process_queue,(void*)soap_thr[i]); } for(;;) { //接受客户端的连接 s = soap_accept(&ServerSoap); if (!soap_valid_socket(s)) { if (ServerSoap.errnum) { soap_print_fault(&ServerSoap,stderr); continue; }else { fprintf(stderr,"Server timed out "); break; } } //客户端的IP地址 fprintf(stderr,"Accepted connection from IP= %d.%d.%d.%d socket = %d ", ((ServerSoap.ip)>>24)&&0xFF,((ServerSoap.ip)>>16)&0xFF,((ServerSoap.ip)>>8)&0xFF,(ServerSoap.ip)&0xFF,(ServerSoap.socket)); //请求的套接字进入队列，如果队列已满则循环等待 while(enqueue(s) == SOAP_EOM) Sleep(1000); } //服务结束后的清理工作 for(i = 0; i < MAX_THR; i++) { while (enqueue(SOAP_INVALID_SOCKET) == SOAP_EOM) { Sleep(1000); } } for(i=0; i< MAX_THR; i++) { fprintf(stderr,"Waiting for thread %d to terminate ..",i); pthread_join(tid[i],NULL); fprintf(stderr,"terminated "); soap_done(soap_thr[i]); free(soap_thr[i]); } pthread_mutex_destroy(&queue_cs); pthread_cond_destroy(&queue_cv); } //分离运行时的环境 soap_done(&ServerSoap); return 0;}