vc http 文件上传
时间: 2024-01-21 11:01:06 浏览: 136
vc http文件上传是指使用vc编程语言通过http协议将文件传输到服务器的过程。以下是一个简单的vc http文件上传的示例代码:
```c++
#include <wininet.h>
int main()
{
const char* fileName = "C:\\test.txt"; // 文件路径
const char* serverUrl = "http://example.com/upload"; // 服务器接收上传文件的URL
HINTERNET hInternet = InternetOpen(L"vc http upload", INTERNET_OPEN_TYPE_DIRECT, NULL, NULL, 0);
HINTERNET hConnect = InternetOpenUrlA(hInternet, serverUrl, NULL, 0, INTERNET_FLAG_RELOAD, 0);
if (hConnect)
{
HINTERNET hRequest = HttpOpenRequestA(hConnect, "POST", NULL, NULL, NULL, NULL, 0, 0);
if (hRequest)
{
DWORD bytesRead = 0;
char buffer[1024];
DWORD bytesWritten = 0;
// 打开文件
HANDLE hFile = CreateFileA(fileName, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
printf("Failed to open file: %s\n", fileName);
}
else
{
// 读取文件内容并发送到服务器
while (ReadFile(hFile, buffer, sizeof(buffer), &bytesRead, NULL) && bytesRead > 0)
{
// 发送文件数据
if (!HttpWriteFile(hRequest, buffer, bytesRead, &bytesWritten))
{
printf("Failed to send file data\n");
break;
}
}
CloseHandle(hFile);
}
// 发送HTTP请求
if (!HttpSendRequestA(hRequest, NULL, 0, NULL, 0))
{
printf("Failed to send HTTP request\n");
}
else
{
// 获取服务器的响应
char response[1024];
DWORD responseSize = sizeof(response);
if (InternetReadFile(hRequest, response, responseSize, &responseSize) && responseSize > 0)
{
printf("Server response: %s\n", response);
}
}
InternetCloseHandle(hRequest);
}
InternetCloseHandle(hConnect);
}
InternetCloseHandle(hInternet);
return 0;
}
```
以上代码通过WinINet库实现了一个简单的vc http文件上传的过程。首先,使用`InternetOpen`函数创建一个打开的互联网会话句柄;然后,使用`InternetOpenUrlA`函数打开一个连接到目标服务器的句柄;接下来,使用`HttpOpenRequestA`函数打开一个HTTP请求句柄;然后,打开要上传的文件,并循环读取文件内容,使用`HttpWriteFile`函数发送文件内容到服务器;最后,使用`HttpSendRequestA`函数发送HTTP请求,并使用`InternetReadFile`函数获取服务器的响应。
以上是一个简单的vc http文件上传的实现示例,具体的实现需要根据实际情况进行调整和扩展。
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