关于 ios：使用 ASIFormDataRequest 将 UIImage 从 UIImagePickerController 发送到 PHP 服务器

Sending UIImage from UIImagePickerController to PHP server using ASIFormDataRequest

在当前的项目中，我实现了一个 UITableViewController 收集某些数据并根据用户请求将其发送到后端服务器。
这一切都很好，花花公子..但是，我上传图像时遇到问题。

一旦我从 UIImagePickerController 得到图像并发送它，服务器似乎有问题。如果我将其编码为 JPEG，PHP 似乎无法理解它...如果我将其编码为 PNG，整个请求似乎都被搞砸了。

但是，如果我选择项目中存在的任何其他图像(例如某些背景图像)，上传过程将完美运行！这是奇怪的部分。一旦我使用 UIImagePickerController 中的图像，它就不起作用......即使我确实得到了图像(参见代码中的 addSubview，它有效)。

这是我的代码：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62

@interface ServiceViewController ()

@property (nonatomic) UIImage *image;
[...]

@end

@implementation ServiceViewController

@synthesize image = _image;
[...]

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
self.image = [[info objectForKey:UIImagePickerControllerOriginalImage] copy];

[self.tableView reloadData];

[self dismissModalViewControllerAnimated:YES];
}

- (void)sendToApi
{
// Send post data
NSString *urlString = [NSString stringWithFormat:@"%@/%@", API_BASE_DOMAIN2, @"requestservice"];
urlString = @"http://localhost/api/public_html/requestservice";

NSURL *url = [NSURL URLWithString:urlString];

ASIFormDataRequest *request = [[ASIFormDataRequest alloc] initWithURL:url];
[request setUseKeychainPersistence:YES];
[request setPostValue:[self.problems objectAtIndex:self.problem] forKey:@"problem"];
[request setPostValue:[self stationName] forKey:@"station"];
[request setPostValue:self.otherInformation forKey:@"information"];
[request setPostValue:[NSNumber numberWithInt:self.lock] forKey:@"lock"];
[request setUploadProgressDelegate:self];
[request setDidFinishSelector:@selector(didCompleteRequestService:)];
[request setDidFailSelector:@selector(processFailed:)];
[request setDelegate:self];
[request setRequestMethod:@"POST"];

// Upload an image
[request addData:[NSData dataWithData:UIImageJPEGRepresentation(self.image, 0.9)] withFileName:@"img.jpg" andContentType:@"image/jpeg" forKey:@"picture"];

UIImageView *view = [[UIImageView alloc] initWithImage:self.image];
[view sizeToFit];
[self.view addSubview:view];

[request startAsynchronous];
}

- (void)setProgress:(float)newProgress {
// [prgressView setProgress:newProgress];
NSLog(@"New progress: %f", newProgress);
}

- (void)didCompleteRequestService:(ASIHTTPRequest *)request
{
NSLog(@"Request completed");
NSLog(@"Result: %@", request.responseString);
}

服务器端：

1
2
3
4
5
6
7
8
9
10
11
12
13
14

var_dump($_FILES);

if ($this->_aPicture !== null) {
$sTarget = DIR_SERVICE . $this->_sFileNamePrefix .".jpg";

var_dump($this->_aPicture);
var_dump($sTarget);

if (!move_uploaded_file($this->_aPicture['tmp_name'], $sTarget)) {
$this->returnHttpError(500);
}
}

$this->_writeDataToFile();

这是我的结果：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

2013-03-21 00:04:04.859 AppName[15598:c07] New progress: 0.000000
2013-03-21 00:04:04.862 AppName[15598:c07] New progress: 1.000000
2013-03-21 00:04:04.863 AppName[15598:c07] Request completed
2013-03-21 00:04:04.863 AppName[15598:c07] Result: array(1) {
["picture"]=>
array(5) {
["name"]=>
string(7)"img.jpg"
["type"]=>
string(0)""
["tmp_name"]=>
string(0)""
["error"]=>
int(1)
["size"]=>
int(0)
}
}
array(5) {
["name"]=>
string(7)"img.jpg"
["type"]=>
string(0)""
["tmp_name"]=>
string(0)""
["error"]=>
int(1)
["size"]=>
int(0)
}
string(58)"/Users/paulp/Sites/api/service/K98XQPo7zx.jpg"
Sending error: 500

我尝试了很多不同的东西，例如：

如何上传从 UIImagePickerController 拍摄的图像
上传使用 UIImagePickerController 选择的图片
还有一些。

我没有改成例如MKNetworkKit，因为(目前)没有时间或预算，所以这不是解决方案。

我该如何解决这个问题？

保存选中的图片

1
2
3
4
5
6
7

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo {

//Save selected image to document directory
jpgPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/Test.jpg"];
[UIImageJPEGRepresentation(img, 1.0) writeToFile:jpgPath atomically:YES];
[picker dismissModalViewControllerAnimated:YES];
}

然后使用ASIFormDataRequest的setFile:forKey方法将图像发送到服务器

1
2
3
4

ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
if (jpgPath.length > 0) {
[request setFile:jpgPath forKey:@"image"];
}