你是想传字符串吧?最简单的办法就是循环发送,根据数组的大小,一个一个发送直到发送完成。如果服务器需要知道数据长度,可以在服务器接口函数多开一个形参,用来传递数组大小,方便发送和接收的控制。或者自己定义一个结束标志,比如 ‘#’、‘$’...之类的,这样服务器就可以根据这个结束符灵活的控制和接收来自客户端的数据了。亲测有效,希望能帮到你。
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
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>\n", 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\n", 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\n", 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 \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
}
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\n", 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
}
2.在编译服务器及客户端程序时一开始对add.h生成的文件添加到工程,经常出现问题,需要自己不调试。特别是链接时段,server/client要与其生成的文件相对应,server调用生成的soapserver.cpp,client调用生成的soapclient.cpp文件。
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: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)
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 = 0i <MAX_THRi++)
{
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 = 0i <MAX_THRi++)
{
while (enqueue(SOAP_INVALID_SOCKET) == SOAP_EOM)
{
Sleep(1000)
}
}
for(i=0i<MAX_THRi++)
{
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
}
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