我在文档目录(iPhone)中确实有一些图像文件(.png 文件)。我正在 UIWebView 上查看 Web 表单 (.aspx)。当我单击表单的提交按钮时,我只想将图像文件附加到表单,并希望将该文件与 Web 表单一起发送到 Web 服务器。
我遇到的问题是,我不知道如何将图像文件附加到 Web 表单以及如何提交这两个文件。
请帮我解决这个问题。我没有得到任何提示如何去做。
谢谢你....
最佳答案
您需要修改这些示例才能为您工作,但它们是工作示例。
Objective-C
MyViewController.m:
- (void) upload
{
NSString *urlString = @"http://www.yourwebsite.com/uploads/upload.php";
NSData *data = /* turn your png into NSData */
// setting up the request object now
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:@"POST"];
NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
/* now lets create the body of the post */
NSString *content = [NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@.png\"\r\n",@"yourPng"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:content] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"Content-Type: text/plain\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:data]];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
// setting the body of the post to the reqeust
[request setHTTPBody:body];
// now lets make the connection to the web
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
}
PHP
upload.php:
<?php
//assuming upload.php and upload folder are in the same dir
$uploaddir = 'uploads/';
$file = basename($_FILES['userfile']['name']);
$uploadfile = $uploaddir . $file;
$product = $_GET[product];
if (is_uploaded_file($_FILES['userfile']['tmp_name']))
{
echo "PNG uploaded. \r\n";
} else {
echo "PNG not uploaded. \r\n";
}
if ($_FILES['userfile']['size']> 300000) //Limiting image at 300K
{
exit("Your file is too large.");
}
// Add support here for PNG files:
if ((!($_FILES['userfile']['type'] == "text/plain")) && //Also allowing
(!($_FILES['userfile']['type'] == "text/plist")) && //plist files
(!($_FILES['userfile']['type'] == "text/html"))) //HTML files
{
exit("Incorrect file type. " . $_FILES['userfile']['type'] . " is the file type you uploaded.");
}
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
$postsize = ini_get('post_max_size'); //Not necessary, I was using these
$canupload = ini_get('file_uploads'); //server variables to see what was
$tempdir = ini_get('upload_tmp_dir'); //going wrong.
$maxsize = ini_get('upload_max_filesize');
echo "http://www.yourwebsite.com/uploads/{$file}" . "\r\n" . $_FILES['userfile']['size'] . "\r\n" . $_FILES['userfile']['type'] ;
}
?>
关于iphone - 将图像文件上传到 Web 表单,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5151004/