问题描述
我试图使用multipart / form-data标头在cURL中发布一个图像,因为我发送的API是期望图像作为多部分形式发送。
I am trying to post an image with cURL in PHP using multipart/form-data header since API that I am sending to is expecting image to be sent as multi-part form.
我没有与其他请求的API交谈的问题;只有张贴图片是一个问题。
I don't have problems talking to the API with other requests; only posting an image is an issue.
我在客户端使用此表单:
I am using this form on client side:
<form action="http://myServerURL" method="POST" enctype="multipart/form-data">
<input type="file" name="file" />
<input type="Submit">
</form>
这是我正在发布的服务器API):
and this is the server I am posting to (here I am trying to post this data forward to an API):
$ch = curl_init($url);
curl_setopt ($ch, CURLOPT_POST, 1);
curl_setopt ($ch, CURLOPT_POSTFIELDS, $imgRawData); // <-- raw data here hm?
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt ($ch, CURLOPT_COOKIEFILE, $cookieJar);
curl_setopt( $ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLINFO_HEADER_OUT, 1); <-- using this as I wanted to check if HTTPHEADER is set
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: multipart/form-data')); <-- setting content-type header?
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);
// i get response from the server
$response = curl_exec( $ch );
// with this I can check what kind of content type the last request had?
$requestContentType = curl_getinfo($ch,CURLINFO_CONTENT_TYPE);
echo "<br>request Content Type was:".$requestContentType."<br>";
curl_close($ch);
echo "<br><b>SERVER POST IMAGE RESPONSE:</b><br>";
echo $response;
使用下面的代码,我可以看到我的请求标题:
With the code below I am able to see my request headers:
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
var_dump(curl_getinfo($ch));
请求标头中的内容类型现在显示正确。但是似乎图像不能正确发送API期望。很遗憾,我没有访问API ...
The content-type in request-headers is shown correctly now. But it seems the image is not send correctly as API would expect. Unfortunately I don't have access to the API...
任何帮助感谢,谢谢
推荐答案
如果任何人有同样的问题:检查作为@PravinS建议。我使用完全相同的代码,如图所示,它完美地为我工作。
In case anyone had the same problem: check this as @PravinS suggested. I used the exact same code as shown there and it worked for me perfectly.
这是帮助的服务器代码的相关部分:
This is the relevant part of the server code that helped:
if (isset($_POST['btnUpload']))
{
$url = "URL_PATH of upload.php"; // e.g. http://localhost/myuploader/upload.php // request URL
$filename = $_FILES['file']['name'];
$filedata = $_FILES['file']['tmp_name'];
$filesize = $_FILES['file']['size'];
if ($filedata != '')
{
$headers = array("Content-Type:multipart/form-data"); // cURL headers for file uploading
$postfields = array("filedata" => "@$filedata", "filename" => $filename);
$ch = curl_init();
$options = array(
CURLOPT_URL => $url,
CURLOPT_HEADER => true,
CURLOPT_POST => 1,
CURLOPT_HTTPHEADER => $headers,
CURLOPT_POSTFIELDS => $postfields,
CURLOPT_INFILESIZE => $filesize,
CURLOPT_RETURNTRANSFER => true
); // cURL options
curl_setopt_array($ch, $options);
curl_exec($ch);
if(!curl_errno($ch))
{
$info = curl_getinfo($ch);
if ($info['http_code'] == 200)
$errmsg = "File uploaded successfully";
}
else
{
$errmsg = curl_error($ch);
}
curl_close($ch);
}
else
{
$errmsg = "Please select the file";
}
}
html表单应该类似:
html form should look something like:
<form action="uploadpost.php" method="post" name="frmUpload" enctype="multipart/form-data">
<tr>
<td>Upload</td>
<td align="center">:</td>
<td><input name="file" type="file" id="file"/></td>
</tr>
<tr>
<td> </td>
<td align="center"> </td>
<td><input name="btnUpload" type="submit" value="Upload" /></td>
</tr>
这篇关于将原始图像数据作为多部分/表单数据以卷曲形式发布的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!