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Posted on 2010-08-14 23:46 roy 閱讀(2279) 評論(0) 編輯 收藏 引用 所屬分類: C/C++
- 電信provisioning系統中，常常需要與遠程服務器實時交換一些數據，以完成用戶的請求。由于簡單對象訪問協議（Simple Object Access Protocol, SOAP）的流行，許多涉及到第三方的應用，我們一般都比較樂意使用SOAP來開發。不過，由于可能涉及到公司的機密，本系列教程的開發實例盡量采用在網上已經公開的Web Service資源。
-
- 上文已經交待了gSOAP在Linux環境下的編譯方法和客戶端的實例程序，本文繼續講解其服務端程序的開發。由于不可能獲得真正的數據庫內容，我們設定的目標是，所有返回的內容都是客戶端傳入的股票代碼。
-
- 首先，在gsoap-2.7/gsoap/wsdl/下創建一個stock_server目錄
- -bash-3.2$ mkdir -p stock_server
-
- 改變當前路徑為stock_server
- -bash-3.2$ cd stock_server
-
- 仍然使用wsdl2h生成基于純C代碼的stock.h
- -bash-3.2$ ../wsdl2h -c -o stock.h http://webservice.webxml.com.cn/WebServices/ChinaStockWebService.asmx?wsdl
-
- 然后，生成服務端存根程序，并且不生成xml文件和soapServerLib.c
- -bash-3.2$ ../../bin/linux386/soapcpp2 -S -L -x stock.h
-
- ** The gSOAP code generator for C and C++, soapcpp2 release 2.7.17
- ** Copyright (C) 2000-2010, Robert van Engelen, Genivia Inc.
- ** All Rights Reserved. This product is provided "as is", without any warranty.
- ** The soapcpp2 tool is released under one of the following three licenses:
- ** GPL, the gSOAP public license, or the commercial license by Genivia Inc.
-
- Saving soapStub.h annotated copy of the input declarations
- Saving soapH.h interface declarations
- Saving soapC.c XML serializers
- Saving soapServer.c server request dispatcher
- Using ns2 service name: ChinaStockWebServiceSoap
- Using ns2 service style: document
- Using ns2 service encoding: literal
- Using ns2 service location: http://webservice.webxml.com.cn/WebServices/ChinaStockWebService.asmx
- Using ns2 schema namespace: http://WebXml.com.cn/ChinaStockWebServiceSoap
- Saving ChinaStockWebServiceSoap.nsmap namespace mapping table
- Using ns3 service name: ChinaStockWebServiceSoap12
- Using ns3 service style: document
- Using ns3 service encoding: literal
- Using ns3 service location: http://webservice.webxml.com.cn/WebServices/ChinaStockWebService.asmx
- Using ns3 schema namespace: http://WebXml.com.cn/ChinaStockWebServiceSoap12
- Saving ChinaStockWebServiceSoap12.nsmap namespace mapping table
-
- Compilation successful
-
- 服務端的主程序稍微比客戶端復雜些，因為還要處理客戶端的其他請求，至少要有其函數體，否則編譯時會報錯。
#include "soapH.h"
#include "ChinaStockWebServiceSoap12.nsmap"
int main(int argc, char **argv) {
if ( argc != 2 ) {
printf("Usage: %s port\n", argv[0]);
exit(-1);
}
int port = atol(argv[1]);
struct soap soap;
soap_init(&soap);
int m, s;
if ( (m = soap_bind(&soap, NULL, port, 100)) < 0 ) {
soap_print_fault(&soap, stderr);
}
else {
printf("Socket connect successfully: master socket = %d\n", m);
int i = 0;
while ( 1 ) {
if ( (s = soap_accept(&soap)) < 0 ) {
soap_print_fault(&soap, stderr);
break;
}
printf("Connection %d accepted from IP = %d.%d.%d.%d, slave socket = %d\n", ++i, (soap.ip >> 24) & 0xff, (soap.ip >> 16) & 0xff, (soap.ip >> 8) & 0xff, soap.ip & 0xff, s);
if ( soap_serve(&soap) != SOAP_OK ) {
soap_print_fault(&soap, stderr);
break;
}
soap_end(&soap);
}
}
soap_done(&soap);
}
int __ns3__getStockInfoByCode(
struct soap *soap,
struct _ns1__getStockInfoByCode *request,
struct _ns1__getStockInfoByCodeResponse *response) {
int element_counter = 25;
response->getStockInfoByCodeResult = (struct ns1__ArrayOfString *) malloc(sizeof(struct ns1__ArrayOfString));
response->getStockInfoByCodeResult->__sizestring = element_counter;
response->getStockInfoByCodeResult->string = (char **) malloc(sizeof(char *) * element_counter);
int i = 0;
for ( i = 0; i < element_counter; i++ ) {
response->getStockInfoByCodeResult->string[i] = (char *) malloc(sizeof(char) * 32);
strcpy(response->getStockInfoByCodeResult->string[i], request->theStockCode);
}
return SOAP_OK;
}
int __ns3__getStockImage_USCOREkByteByCode(
struct soap *soap,
struct _ns1__getStockImage_USCOREkByteByCode *request,
struct _ns1__getStockImage_USCOREkByteByCodeResponse *response) {
return SOAP_OK;
}
int __ns3__getStockImage_USCOREkByCode(
struct soap *soap,
struct _ns1__getStockImage_USCOREkByCode *request,
struct _ns1__getStockImage_USCOREkByCodeResponse *response) {
return SOAP_OK;
}
int __ns3__getStockImageByteByCode(
struct soap *soap,
struct _ns1__getStockImageByteByCode *request,
struct _ns1__getStockImageByteByCodeResponse *response) {
return SOAP_OK;
}
int __ns3__getStockImageByCode(
struct soap *soap,
struct _ns1__getStockImageByCode *request,
struct _ns1__getStockImageByCodeResponse *response) {
return SOAP_OK;
}
int __ns2__getStockInfoByCode(
struct soap *soap,
struct _ns1__getStockInfoByCode *request,
struct _ns1__getStockInfoByCodeResponse *response) {
int element_counter = 25;
response->getStockInfoByCodeResult = (struct ns1__ArrayOfString *) malloc(sizeof(struct ns1__ArrayOfString));
response->getStockInfoByCodeResult->__sizestring = element_counter;
response->getStockInfoByCodeResult->string = (char **) malloc(sizeof(char *) * element_counter);
int i = 0;
for ( i = 0; i < element_counter; i++ ) {
response->getStockInfoByCodeResult->string[i] = (char *) malloc(sizeof(char) * 32);
strcpy(response->getStockInfoByCodeResult->string[i], request->theStockCode);
}
return SOAP_OK;
}
int __ns2__getStockImage_USCOREkByteByCode(
struct soap *soap,
struct _ns1__getStockImage_USCOREkByteByCode *request,
struct _ns1__getStockImage_USCOREkByteByCodeResponse *response) {
return SOAP_OK;
}
int __ns2__getStockImage_USCOREkByCode(
struct soap *soap,
struct _ns1__getStockImage_USCOREkByCode *request,
struct _ns1__getStockImage_USCOREkByCodeResponse *response) {
return SOAP_OK;
}
int __ns2__getStockImageByteByCode(
struct soap *soap,
struct _ns1__getStockImageByteByCode *request,
struct _ns1__getStockImageByteByCodeResponse *response) {
return SOAP_OK;
}
int __ns2__getStockImageByCode(
struct soap *soap,
struct _ns1__getStockImageByCode *request,
struct _ns1__getStockImageByCodeResponse *response) {
return SOAP_OK;
}
-
值得注意的是，如果項目中存在多個name space，最好把全部name space的相關方法都進行編碼，否則可能出現意想不到的錯誤：客戶端明明是調用ns3的方法，但是服務端卻使用了ns2的方法來提供服務。這一點我也比較費解，可能與wsdl本身的寫法有關。
上述服務端程序的編譯命令是
gcc -O2 -o stock_server stock_server.c soapC.c soapServer.c ../../stdsoap2.c -I../.. -L../.. -lgsoap
同時，要把上文的客戶端程序修改一下，支持指定的end point，不指定end point再取默認的end point
#include "soapH.h"
#include "ChinaStockWebServiceSoap12.nsmap"
int main(int argc, char **argv) {
if ( argc != 2 && argc != 3 ) {
printf("Usage: %s stock_code [end_point]\n", argv[0]);
exit(-1);
}
struct soap soap;
soap_init(&soap);
soap_set_mode(&soap, SOAP_C_UTFSTRING);
struct _ns1__getStockInfoByCode request;
struct _ns1__getStockInfoByCodeResponse response;
request.theStockCode = argv[1];
char *endpoint = NULL;
if ( argc == 3 )
endpoint = argv[2];
if ( soap_call___ns3__getStockInfoByCode(&soap, endpoint, NULL, &request, &response) == SOAP_OK ) {
int element_counter = response.getStockInfoByCodeResult->__sizestring;
int i = 0;
for ( i = 0; i < element_counter; i++ ) {
switch ( i ) {
case 0 : printf("Stock code : "); break;
case 1 : printf("Stock name : "); break;
case 2 : printf("Timestamp : "); break;
case 3 : printf("Latest price : "); break;
case 4 : printf("Closing price T-1 : "); break;
case 5 : printf("Opening price : "); break;
case 6 : printf("Ups and downs : "); break;
case 7 : printf("Mininum price : "); break;
case 8 : printf("Maxinum price : "); break;
case 9 : printf("Amount of up/down : "); break;
case 10 : printf("Trading volume : "); break;
case 11 : printf("Trading amount : "); break;
case 12 : printf("Buy price : "); break;
case 13 : printf("Sell price : "); break;
case 14 : printf("Agency trans : "); break;
case 15 : printf("Buy 1 : "); break;
case 16 : printf("Buy 2 : "); break;
case 17 : printf("Buy 3 : "); break;
case 18 : printf("Buy 4 : "); break;
case 19 : printf("Buy 5 : "); break;
case 20 : printf("Sell 1 : "); break;
case 21 : printf("Sell 2 : "); break;
case 22 : printf("Sell 3 : "); break;
case 23 : printf("Sell 4 : "); break;
case 24 : printf("Sell 5 : "); break;
default : break;
}
printf("%s\n", response.getStockInfoByCodeResult->string[i]);
}
}
else {
soap_print_fault(&soap, stderr);
}
soap_destroy(&soap);
soap_end(&soap);
soap_done(&soap);
return 0;
}
- 使服務端程序在某一高位端口下運行，比如
- -bash-3.2$ ./stock_server 6883
- Socket connect successfully: master socket = 3
-
- 另起一個窗口執行客戶端程序，并且指定end point
- -bash-3.2$ ./stock sh600000 http://localhost:6883
- Stock code : sh600000
- Stock name : sh600000
- Timestamp : sh600000
- Latest price : sh600000
- Closing price T-1 : sh600000
- Opening price : sh600000
- Ups and downs : sh600000
- Mininum price : sh600000
- Maxinum price : sh600000
- Amount of up/down : sh600000
- Trading volume : sh600000
- Trading amount : sh600000
- Buy price : sh600000
- Sell price : sh600000
- Agency trans : sh600000
- Buy 1 : sh600000
- Buy 2 : sh600000
- Buy 3 : sh600000
- Buy 4 : sh600000
- Buy 5 : sh600000
- Sell 1 : sh600000
- Sell 2 : sh600000
- Sell 3 : sh600000
- Sell 4 : sh600000
- Sell 5 : sh600000
-
- 成功！
-
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