Dev C ++ Wininet使用HTTP上传文件 [英] Dev C++ Wininet Upload file using HTTP
问题描述
我要上传C：\test.txt到网络服务器，当我正在运行程序时，文件没有上传，我没有收到任何错误。
和php代码可以在这里找到：http://student114.110mb.com/upload.txt
或
http://student114.110mb.com /upload.php
请帮我处理错误。
#include< windows.h>
#include< wininet.h>
#include< tchar.h>
#include< iostream>
#pragma comment（lib，wininet.lib）
using namespace std;
int main（）
{
static TCHAR frmdata [] =------------------ ----------- 7d82751e2bc0858\\\
Content-Disposition：form-data; name = \uploadedfile\;; filename = \C：\test.txt\\\\
Content -type：text / plain\\\
\\\
file contents here \\\
----------------------------- 7d82751e2bc0858-- ;
static TCHAR hdrs [] =Content-Type：multipart / form-data; boundary = --------------------------- 7d82751e2bc0858;
HINTERNET hSession = InternetOpen（MyAgent，INTERNET_OPEN_TYPE_PRECONFIG，NULL，NULL，0）;
if（hSession == NULL）
{
cout<<Error：InternetOpen;
}
HINTERNET hConnect = InternetConnect（hSession，_T（localhost），INTERNET_DEFAULT_HTTP_PORT，NULL，NULL，INTERNET_SERVICE_HTTP，0,1）;
if（hConnect == NULL）
{
cout<<Error：InternetConnect;
}
HINTERNET hRequest = HttpOpenRequest（hConnect，（const char *）POST，_ T（upload.php），NULL，NULL，（const char **）* / * \0，0，1）;
if（hRequest == NULL）
{
cout<<Error：HttpOpenRequest;
}
BOOL sent = HttpSendRequest（hRequest，hdrs，strlen（hdrs），frmdata，strlen（frmdata））;
if（！sent）
{
cout<<Error：HttpSendRequest;
}
//关闭任何有效的internet-handles
InternetCloseHandle（hSession）;
InternetCloseHandle（hConnect）;
InternetCloseHandle（hRequest）;
return 0;
}
首先，您提供的链接代码和您发布的代码不一样：
InternetConnect（hSession，_T（localhost），...
InternetConnect（hSession，_T（http://student114.110mb.com），。 ..
您必须在这里传递主机名或IP地址，所以localhost ：//student114.110mb.com不是。
如果你通过一个URL，你会得到12005错误代码[ msdn上的WinINet错误代码] 。
另一个问题是frmdata字符串。反斜杠在C：\ test.txt或者你会得到一个制表符字符\t在字符串中。分隔符之前和之后的\\\
也应该被替换为\r\\\
，因为RFC 1521和大多数其他互联网协议使用CRLF作为行分隔符。
这是我使用的字符串。
code> static TCHAR frmdata [] =----------------------------- 7d82751e2bc0858\r\\\
Content-Disposition ：form-data; name = \uploadedfile\; filename = \C：\\test.txt\\r\\\
Content-Type：text / plain\r\\\
\r\\\
file contents here \r\\\
- ---------------------------- 7d82751e2bc0858 - \r\\\
;
最后，PHP代码不工作，因为你使用$ _FILES [file]，你应该使用$ _FILES [uploadedfile]。 uploadedfile通常对应于HTML中的< input type =file>标签的名称，但在您的情况下，它在frmdata []字符串的 name = 参数中指定。 / p>
这里是我用来测试这个
的PHP代码 move_uploaded_file $ _FILES [uploadedfile] [tmp_name]，/ files / my_file）;
-
写入一个简单的HTML上传表单到
测试你的php脚本 -
让你的程序发送请求到
netcat并检查输出
I want to upload "C:\test.txt" to webserver, when I am running program, file is not uploading and I am not getting any error.
the complete C++ code can be find here
and php code on webserver can be find here: "http://student114.110mb.com/upload.txt" or "http://student114.110mb.com/upload.php"
kindly help me where I am doing wrong
#include <windows.h>
#include <wininet.h>
#include <tchar.h>
#include <iostream>
#pragma comment(lib,"wininet.lib")
using namespace std;
int main()
{
static TCHAR frmdata[] = "-----------------------------7d82751e2bc0858\nContent-Disposition: form-data; name=\"uploadedfile\"; filename=\"C:\test.txt\"\nContent-Type: text/plain\n\nfile contents here\n-----------------------------7d82751e2bc0858--";
static TCHAR hdrs[] = "Content-Type: multipart/form-data; boundary=---------------------------7d82751e2bc0858";
HINTERNET hSession = InternetOpen("MyAgent",INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
if(hSession==NULL)
{
cout<<"Error: InternetOpen";
}
HINTERNET hConnect = InternetConnect(hSession, _T("localhost"),INTERNET_DEFAULT_HTTP_PORT, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 1);
if(hConnect==NULL)
{
cout<<"Error: InternetConnect";
}
HINTERNET hRequest = HttpOpenRequest(hConnect, (const char*)"POST",_T("upload.php"), NULL, NULL, (const char**)"*/*\0", 0, 1);
if(hRequest==NULL)
{
cout<<"Error: HttpOpenRequest";
}
BOOL sent= HttpSendRequest(hRequest, hdrs, strlen(hdrs), frmdata, strlen(frmdata));
if(!sent)
{
cout<<"Error: HttpSendRequest";
}
//close any valid internet-handles
InternetCloseHandle(hSession);
InternetCloseHandle(hConnect);
InternetCloseHandle(hRequest);
return 0;
}
I was able to make your code work.
First of all the code on the link you provided and the code you posted is not the same:
InternetConnect(hSession, _T("localhost"), ...
InternetConnect(hSession, _T("http://student114.110mb.com"), ...
You must pass an host name or ip address here so "localhost" is good but "http://student114.110mb.com" isn't. If you pass an URL you will get the 12005 error code [see WinINet error codes on msdn].
Another problem is the frmdata string. You should double the backslash in C:\test.txt or you will get a tab character \t in your string. The \n before and after the delimiters should also be replaced by \r\n because RFC 1521 and most other internet protocols use CRLF as a line delimiter.
Here is the string I have used.
static TCHAR frmdata[] = "-----------------------------7d82751e2bc0858\r\nContent-Disposition: form-data; name=\"uploadedfile\"; filename=\"C:\\test.txt\"\r\nContent-Type: text/plain\r\n\r\nfile contents here\r\n-----------------------------7d82751e2bc0858--\r\n";
Finally the PHP code doesn't work because you use $_FILES["file"] where you should be using $_FILES["uploadedfile"]. "uploadedfile" would typically correspond to the name of an <input type="file"> tag in HTML but in your case it is specified in the name= parameter of the frmdata[] string.
Here's the PHP code I have used to test this
move_uploaded_file($_FILES["uploadedfile"]["tmp_name"], "/files/my_file");
When you work on complex client/server interaction like this it helps to test each part separately. You could for instance.
Write a simple HTML upload form to test your php script
Have your program send its request to netcat and examine the output
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