问题编译/链接WinHTTP示例 [英] Problem compiling/linking WinHTTP example
问题描述
我正在尝试使用以下代码连接到服务器，但存在一些错误.
有人可以帮我吗?
Hi,
i am trying using below code for connect to server but there are some errors.
Can anybody help me?
/************************************************************
* *
* RetOptions.cpp *
* *
* Copyright (c) Microsoft Corporation. All Rights Reserved. *
* *
************************************************************/
#include #windows.h#
#include #winhttp.h#;
#include #stdio.h#
int main(int argc, char* argv[])
{
HINTERNET hSession;
HINTERNET hConnect;
HINTERNET hRequest;
BOOL httpResult;
DWORD data;
DWORD dwSize = sizeof(DWORD);
LPWSTR pwszURL;
// Print a description of the sample.
printf("This sample demonstrates the process for retrieving WinHTTP\n");
printf("options programmatically from a C/C++ application. WinHTTP\n");
printf("application programming interface (API) functions are used to\n");
printf("determine the default connect time-out value and to find the\n");
printf("current URL after an HTTP request is redirected.\n\n");
// Use WinHttpOpen to obtain a session handle.
hSession = WinHttpOpen( L"A WinHTTP Example Program/1.0",
WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,
WINHTTP_NO_PROXY_NAME,
WINHTTP_NO_PROXY_BYPASS, 0);
// Use WinHttpQueryOption to retrieve Internet options.
httpResult = WinHttpQueryOption( hSession, WINHTTP_OPTION_CONNECT_TIMEOUT,
&data, &dwSize);
if (httpResult)
printf("Connect time-out:\t%u ms\n",data);
// Use WinHttpConnect to specify an HTTP server.
hConnect = WinHttpConnect( hSession, L"msdn.microsoft.com",
INTERNET_DEFAULT_HTTP_PORT, 0);
// Open and Send a Request Header.
hRequest = WinHttpOpenRequest( hConnect, L"GET",
L"/downloads/samples/internet/winhttp/retoptions/redirect.asp",
NULL, WINHTTP_NO_REFERER,
WINHTTP_DEFAULT_ACCEPT_TYPES, 0);
httpResult = WinHttpSendRequest( hRequest, WINHTTP_NO_ADDITIONAL_HEADERS,
0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0);
httpResult = WinHttpReceiveResponse( hRequest, NULL);
// Use WinHttpQueryOption again, this time to obtain a buffer size.
httpResult = WinHttpQueryOption( hRequest, WINHTTP_OPTION_URL,
NULL, &dwSize);
pwszURL = new WCHAR[dwSize/sizeof(WCHAR)];
// Use WinHttpQueryOption to retrieve Internet options.
httpResult = WinHttpQueryOption( hRequest, WINHTTP_OPTION_URL,
(void *)pwszURL, &dwSize);
printf("Redirected URL:\t\t%S\n",pwszURL);
// Free the allocated memory.
delete [] pwszURL;
// When finished, release the hRequest handle.
httpResult = WinHttpCloseHandle(hRequest);
if (!httpResult)
printf("Could not close the hRequest handle.\n");
// When finished, release the hConnect handle.
httpResult = WinHttpCloseHandle(hConnect);
if (!httpResult)
printf("Could not close the hConnect handle.\n");
// When finished, release the hSession handle.
httpResult = WinHttpCloseHandle(hSession);
if (!httpResult)
printf("Could not close the hSession handle.\n");
return 0;
}
我的错误如下:
1> ------构建开始:项目:111，配置:Debug Win32 ------
1>正在编译...
1> 111.cpp
1>正在链接...
1> 111.obj:错误LNK2019:函数_wmain中引用的未解析的外部符号__imp__WinHttpCrackUrl @ 16
1> 111.obj:错误LNK2019:在函数"int __cdecl WinHttpFormSubmitSample(wchar_t const *，unsigned short，wchar_t *，int，wchar_t *)"中引用的未解析的外部符号__imp__WinHttpCloseHandle @ 4(?WinHttpFormSubmitSample @@ YAHPB_WGPA_ />
1> 111.obj:错误LNK2019:函数"int __cdecl WinHttpFormSubmitSample(wchar_t const *，unsigned short，wchar_t *，int，wchar_t *)"(?WinHttpFormSubmitSample @@ YAHPB_WGPA_)引用的未解析的外部符号__imp__WinHttpQueryHeaders @ 24 />
1> 111.obj:错误LNK2019:在函数"int __cdecl WinHttpFormSubmitSample(wchar_t const *，unsigned short，wchar_t *，int，wchar_t *)"中引用的未解析的外部符号__imp__WinHttpReceiveResponse @ 8(?WinHttpFormSubmitSample @ _YAHPB_WG />
1> 111.obj:错误LNK2019:在函数"int __cdecl WinHttpFormSubmitSample(wchar_t const *，unsigned short，wchar_t *，int，wchar_t *)"中引用的未解析的外部符号__imp__WinHttpWriteData @ 16(?WinHttpFormSubmitSample @@ YAHPB_WGPA_ />
1> 111.obj:错误LNK2019:函数"int __cdecl WinHttpFormSubmitSample(wchar_t const *，unsigned short，wchar_t *，int，wchar_t *)"中引用的未解析的外部符号__imp__WinHttpSendRequest @ 28(?WinHttpFormSubmitSample @@ YAHPB_WGPA_ />
1> 111.obj:错误LNK2019:在函数"int __cdecl WinHttpFormSubmitSample(wchar_t const *，unsigned short，wchar_t *，int，wchar_t *)"中引用的未解析的外部符号__imp__WinHttpAddRequestHeaders @ 16(?WinHttpFormSubmitSample @@ YHPB_WG />
1> 111.obj:错误LNK2019:在函数"int __cdecl WinHttpFormSubmitSample(wchar_t const *，unsigned short，wchar_t *，int，wchar_t *)"中引用的未解析的外部符号__imp__WinHttpOpenRequest @ 28(?WinHttpFormSubmitSample @@ YAHPB_WGPA_W />
1> 111.obj:错误LNK2019:在函数"int __cdecl WinHttpFormSubmitSample(wchar_t const *，unsigned short，wchar_t *，int，wchar_t *)"中引用了未解决的外部符号__imp__WinHttpConnect @ 16(?WinHttpFormSubmitSample @@ YAHPB_WGPA
1>构建日志保存在文件://c:\ Users \ Reza \ Desktop \ 111 \ 111 \ Debug \ BuildLog.htm"中
1> 111-11个错误，0个警告
========== Build:0成功，1失败，0最新，跳过0 ==========
最好的问候，
my error is as below:
1>------ Build started: Project: 111, Configuration: Debug Win32 ------
1>Compiling...
1>111.cpp
1>Linking...
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpCrackUrl@16 referenced in function _wmain
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpCloseHandle@4 referenced in function "int __cdecl WinHttpFormSubmitSample(wchar_t const *,unsigned short,wchar_t *,int,wchar_t *)" (?WinHttpFormSubmitSample@@YAHPB_WGPA_WH1@Z)
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpQueryHeaders@24 referenced in function "int __cdecl WinHttpFormSubmitSample(wchar_t const *,unsigned short,wchar_t *,int,wchar_t *)" (?WinHttpFormSubmitSample@@YAHPB_WGPA_WH1@Z)
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpReceiveResponse@8 referenced in function "int __cdecl WinHttpFormSubmitSample(wchar_t const *,unsigned short,wchar_t *,int,wchar_t *)" (?WinHttpFormSubmitSample@@YAHPB_WGPA_WH1@Z)
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpWriteData@16 referenced in function "int __cdecl WinHttpFormSubmitSample(wchar_t const *,unsigned short,wchar_t *,int,wchar_t *)" (?WinHttpFormSubmitSample@@YAHPB_WGPA_WH1@Z)
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpSendRequest@28 referenced in function "int __cdecl WinHttpFormSubmitSample(wchar_t const *,unsigned short,wchar_t *,int,wchar_t *)" (?WinHttpFormSubmitSample@@YAHPB_WGPA_WH1@Z)
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpAddRequestHeaders@16 referenced in function "int __cdecl WinHttpFormSubmitSample(wchar_t const *,unsigned short,wchar_t *,int,wchar_t *)" (?WinHttpFormSubmitSample@@YAHPB_WGPA_WH1@Z)
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpOpenRequest@28 referenced in function "int __cdecl WinHttpFormSubmitSample(wchar_t const *,unsigned short,wchar_t *,int,wchar_t *)" (?WinHttpFormSubmitSample@@YAHPB_WGPA_WH1@Z)
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpConnect@16 referenced in function "int __cdecl WinHttpFormSubmitSample(wchar_t const *,unsigned short,wchar_t *,int,wchar_t *)" (?WinHttpFormSubmitSample@@YAHPB_WGPA_WH1@Z)
1>111.obj : error LNK2019: unresolved external symbol __imp__WinHttpOpen@20 referenced in function "int __cdecl WinHttpFormSubmitSample(wchar_t const *,unsigned short,wchar_t *,int,wchar_t *)" (?WinHttpFormSubmitSample@@YAHPB_WGPA_WH1@Z)
1>C:\Users\Reza\Desktop\111\Debug\111.exe : fatal error LNK1120: 10 unresolved externals
1>Build log was saved at "file://c:\Users\Reza\Desktop\111\111\Debug\BuildLog.htm"
1>111 - 11 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
Best Regards,
推荐答案
我想也许您忘记了在链接器选项中添加Winhttp.lib.
I think perhaps you forgot to add Winhttp.lib to your linker options.
尊敬的先生，
感谢您的答复.
是的你是对的.我添加了它，现在可以工作了.
我是C ++的初学者.
现在，我连接到我的网站，并想知道如何在上面的代码中添加我的参数以将请求发送到服务器，然后从服务器获取响应以在程序中使用该参数.
谢谢.
dear sir,
thank you for your reply.
yes, you are right. I added that and works now.
I am beginner in C++.
Now I connect to my website and want know how I must add my parameter in above code for sending request to server and after that hoe get response from server for using that in my program.
Thanks.
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