〖Linux〗使用gsoap搭建web server（C）

1. gsoap的好處就不用說了：百度百科

2. gsoap的下載地址：項目地址，目前我使用的是2.8.15版本

3. 開發環境：Ubuntu13.10

4. 具體操作步驟（以簡單相加為例）：

　　1) 編寫add.h（頭文件）

//gsoap ns service name: calc
//gsoap ns service protocol: SOAP
//gsoap ns service style: rpc
//gsoap ns service encoding: encoded
//gsoap ns service namespace:    http://localhost:8888
//gsoap ns service location:    http://localhost:8888
//gsoap ns service port:    http://localhost:8888
 
int ns__add( int num1, int num2, int* sum );

　　2) 編寫addserver.c（服務器）

#include "soapH.h"
#include "calc.nsmap"                           /* 與add.h的第一行命名空間(ns)有關 */
#include <stdio.h>
#include <stdlib.h>
int
main (int argc, char *argv[])
{
  int m, s;
  struct soap add_soap;
  soap_init (&add_soap);
  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);    //該句說明該server的服務
      soap_end (&add_soap);
    }
    }
  return 0;
}

int
ns__add (struct soap *add_soap, int num1, int num2, int *sum)
{
  *sum = num1 + num2;
  return 0;
}

　　3) 編寫addclient.c（客戶端）

#include "soapH.h"
#include "calc.nsmap"                           /* 與add.h的第一行命名空間(ns)有關 */
#include <stdio.h>
#include <stdlib.h>

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";       /* 定義server */
  int num1 = 0;
  int num2 = 0;
  int sum = 0;
  if (argc < 3)                                 /* 判斷傳入參數 */
    {
      printf ("usage: %s num1 num2 \n", argv[0]);
      exit (0);
    }
  num1 = atoi (argv[1]);
  num2 = atoi (argv[2]);
  result = add (server, num1, num2, &sum);      /* 執行add() */
  if (result != 0)                              /* 輸出result */
    {
      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;                         /* 創建add_soap()結構體 */
  int result = 0;
  soap_init (&add_soap);                        /* soap_init()*/
  soap_call_ns__add (&add_soap, server, "", num1, num2, sum); /* 調用soap_call_ns_add() */
  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);                         /* 釋放內存空間 */
  soap_done (&add_soap);
  return result;
}

　　4) 編寫Makefile文件

# this is a Makefile to build client and server
# please setting the GSOAP_ROOT first.
# build procedure:
#     step1: make soap
#     step2: make all

OBJ_NS := calc
OBJ_NAME := add
GSOAP_ROOT := /home/scue/work/gsoap_2.8.15/gsoap
INCLUDE := -I$(GSOAP_ROOT)

CC := clang
GCC := clang
#CC := arm-linux-gcc
#GCC := arm-linux-gcc

OBJ_SERVER := soapC.o stdsoap2.o soapServer.o $(OBJ_NAME)server.o
OBJ_CLIENT := soapC.o stdsoap2.o soapClient.o $(OBJ_NAME)client.o

all: server client 

server: $(OBJ_SERVER)
    $(CC) $(INCLUDE) $^ -o $@
client: $(OBJ_CLIENT)
    $(CC) $(INCLUDE) $^ -o $@

.PHONY:soap
soap:
    @cp -v $(GSOAP_ROOT)/stdsoap2.* .
    @$(GSOAP_ROOT)/bin/linux386/soapcpp2 -c $(OBJ_NAME).h
# -c 表示生成c文件

.PHONY:clean
clean:
    rm -f server client *.o
distclean:
    rm -f server client *.o ns* soap* *.xml *.nsmap *.wsdl stdsoap2.*

　　5) 編譯及驗證

make soap && make
./server 4567
./client 2 3 #將會返回5，也可以直接在瀏覽器中輸入http://localhost:4567進行驗證

 參考文章：

　　1.http://blog.csdn.net/wesleyluo/article/details/5532633