上传文件到网络服务器 Delphi + php

Question

我正在开发一个程序，我需要通过 http 将“log.txt”上传到网络服务器。

我已经搜索过了：-

德尔福 XE：

procedure TForm1.Button1Click(Sender: TObject);
begin
idhttp1.Post('http://127.0.0.1/GET2.php', 'C:\Users\Someone\Desktop\log.txt')
end;

---

php :-

<?php
$uploaddir = "uploads/";
$uploadfile = $uploaddir . basename( $_FILES['file']['name']);

if(move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile))
{
  echo "The file has been uploaded successfully";
}
else
{
  echo "There was an error uploading the file";
}
?>

---

但没有上传文件

感谢您的帮助

Answer 1

阅读 PHP 文档。

您的 PHP 代码正在使用 $_FILES，它希望客户端以 MIME multipart/form-data 格式发布 HTML 网络表单：

Handling file uploads > POST method uploads

PHP 能够从任何符合 RFC-1867 的浏览器接收文件上传。

RFC 1867 Form-based File Upload in HTML

但是，这种格式并不是您的应用程序实际发布的格式。它只是按原样发布原始文件内容，没有 MIME 元数据来描述文件。这就是您的 PHP 代码无法正常工作的原因。

要使用TIdHTTP.Post() 发布multipart/form-data HTML 网络表单，您必须使用TIdMultipartFormDataStream 类，例如：

uses
  ..., IdHTTP, IdMultipartFormDataStream;

procedure TForm1.Button1Click(Sender: TObject);
var
  PostData: TIdMultipartFormDataStream;
begin
  PostData := TIdMultipartFormDataStream.Create;
  try
    PostData.AddFile('file', 'C:\Users\Someone\Desktop\log.txt');
    idhttp1.Post('http://127.0.0.1/GET2.php', PostData)
  finally
    PostData.Free;
  end;
end;

另外，PHP 还支持 HTTP PUT 文件上传请求：

Handling file uploads > PUT method support

procedure TForm1.Button1Click(Sender: TObject);
var
  FS: TFileStream;
begin
  FS := TFileStream.Create('C:\Users\Someone\Desktop\log.txt', fmOpenRead or fmShareDenyWrite);
  try
    idhttp1.Put('http://127.0.0.1/log.txt', FS);
  finally
    FS.Free;
  end;
end;

<?php
/* PUT data comes in on the stdin stream */
$putdata = fopen("php://input", "r");

/* Open a file for writing */
$fp = fopen("log.txt", "w");

/* Read the data 1 KB at a time
   and write to the file */
while ($data = fread($putdata, 1024))
  fwrite($fp, $data);

/* Close the streams */
fclose($fp);
fclose($putdata);
?>