我正在使用MysqL数据库从我的iOS应用程序中存储图像.我使用base64encoding和解码技术来存储图像.
问题:
它将名称存储在数据库中作为字符串即可.但它不是将图像存储在htdocs文件夹中.我的问题在哪里以及如何解决?
<?PHP
$host='localhost';
$name='root';
$pwd='';
$db='i';
$conn=MysqL_connect($host,$name,$pwd);
MysqL_select_db($db,$conn);
if($conn)
{ $image=$_POST['image_string'];
if($image!='')
{
$img = @imagecreatefromstring(base64_decode($image));
if($img != false)
{
imagejpeg($img, "htdocs/".$image."");}
}
$qur=MysqL_query("INSERT INTO `j` (`id`, `name`) VALUES (NULL, '$image')");
if($qur)
{
echo "inserted";
}
else
{
echo MysqL_error();
}
}
?>
客户端代码:
NSData *imageData=UIImagePNGRepresentation(_imageView.image);
Nsstring *string;
if([imageData respondsToSelector:@selector(base64EncodedStringWithOptions:)])
{
NSLog(@"iOS 7+");
string=[imageData base64EncodedStringWithOptions:kNilOptions];
}
else
{
string=[imageData base64Encoding];
}
Nsstring *post=[[Nsstring alloc]initWithFormat:@"image_string=%@",string];
post = [post stringByReplacingOccurrencesOfString:@"+" withString:@"%2B"];
NSURL *url=[[NSURL alloc]initWithString:@"http://localhost/lastimage.PHP"];
NSData *postDAta=[post dataUsingEncoding:NSUTF8StringEncoding];
Nsstring *postlength=[Nsstring stringWithFormat:@"%lu",(unsigned long)[postDAta length]];
NSMutableuRLRequest *request=[[NSMutableuRLRequest alloc]init];
[request setURL:url];
[request setHTTPMethod:@"POST"];
[request setValue:postlength forHTTPHeaderField:@"Content-length"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postDAta];
NSError *error = [[NSError alloc] init];
NSHTTPURLResponse *response = nil;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
解决方法:
首先检查要保存的目录是否具有写入权限.
然后尝试:
imagejpeg($img,$_SERVER [‘DOCUMENT_ROOT’].“/ image_name.jpg”);