使用ASIHTTPRequest从iOS上传图像

本文介绍了使用ASIHTTPRequest从iOS上传图像的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我的应用会在注册时上传图片和用户/电子邮件/通行证。 iOS到php到mySQL。电子邮件，用户和电子邮件传递与传播图像名称保存到数据库就好了。它只是没有上传到服务器上的文件夹的图像。所以它只是我的代码的一部分失败，但任何人都可以看到在哪里？我的服务器上有这个代码：

My app uploads an image and user/email/pass upon registration. iOS to php to mySQL. Email,user & pass & image name get saved to the db just fine. Its just the image that is not getting uploaded to the folder on the server. So its just that part of my code which is failing, but can anyone see where? I have this code on my server:

<? include"master_inc.php"; //--------------------------------------------------------------------------RECEIVE LOCAL VARIABLES FROM FORM $lastname = strip_tags(substr($_POST['lastname'],0,32)); $firstname = strip_tags(substr($_POST['firstname'],0,32)); $phone = strip_tags(substr($_POST['phone'],0,32)); //$image = $_POST['image']; $photo=($_FILES['photo']['name']); $password_hint=$_REQUEST['password_hint']; $noERROR=1; $udidposted = 9; //---------------------------------------------------------------------------CHECK IF USERNAME IS LONG ENOUGH $username = strip_tags(substr($_POST['username'],0,32)); if(trim($username)!=='' && strlen(trim($username)) >= 4){ //---------------------------------------------------------------------------IF LONG ENOUGH THEN RUN A QUERY GETTING ALL DATA FROM THAT USER $sql="SELECT * FROM users WHERE username='$username'"; $result=mysql_query($sql); $count=mysql_num_rows($result); //---------------------------------------------------------------------------IF $sql GOTTEN HAS ROW COUNT > 1 THEN USER ALREADY EXISTS----------------SET EXISTING USER 104 FLAG if($count>0){ $username_already_in_use = 3141; } //---------------------------------------------------------------------------ELSE USERNAME IS TOO SHORT?!?!-------------------------------------------------------SET USER TOO SHORT 104 FLAG }else{ $username_too_short = 3142;} //---------------------------------------------------------------------------EMAIL FORMAT CHECK $email_raw = $_REQUEST['email']; if(eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@([a-z0-9-]{2,3})+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email_raw)) { $email = $email_raw; }else{ //---------------------------------------------------------------------------IF INVALID EMAIL THEN----------------------------------------------------------------------SET INVALID EMAIL 104 FLAG $bad_email=3143; } //email unique? $sql="SELECT * FROM users WHERE email='$email'"; $result=mysql_query($sql); $count=mysql_num_rows($result); if($count>0){ //---------------------------------------------------------------------------IF SQL FOR EMAIL RETURNS A ROW THEN------------------------------------------------SET EMAIL 104 FLAG $email_already_in_use=3144; } //Secure Password Format Checks $pw_clean = strip_tags(substr($_POST['password'],0,32)); if (preg_match("/^.*(?=.{4,})(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z]).*$/", $pw_clean, $matches)) { }else{ //---------------------------------------------------------------------------IF PW NOT IN FORMAT THEN-----------------------------------------------------------------SET PW 104 FLAG $pw_insecure = 3145; } //---------------------------------------------------------------------------IF ERROR FLAGS ARE SET THEN LOG HEADERS---------------------------- if($username_already_in_use==3141 OR $email_already_in_use==3144 OR $pw_insecure==3145 OR $bad_email==3143 OR $username_too_short==3142){ header( "location:user_add_errors.php?pw_insecure=$pw_insecure&email_already_in_use=$email_already_in_use&username_already_in_use=$username_already_in_use&bad_email=$bad_email&username_too_short=$username_too_short"); die(); } else {header("location:user_add_errors.php?noERROR=$noERROR");} //End Error Checks________________________ //-------------------------------------------------------------------INSERT INTO SQL //Encrypt Password $encrypted_pw = md5($pw_clean); $query = "INSERT INTO `users` (`username`, `password`, `lastname`, `firstname`, `email`, `phone`, `password_hint`, `udid`, `userCreated`, `photo`) VALUES ( '$username', '$encrypted_pw', '$lastname', '$firstname', '$email', '$phone', '$password_hint', '$udidposted', now(), '$photo')"; // save the info to the database $results = mysql_query( $query ); //-----------------------CODE FOR SAVING IMAGE STARTS //This is the directory where images will be saved $target = "images/"; $target = $target . basename( $_FILES['photo']['name']); //This gets all the other information from the form $photo=($_FILES['photo']['name']); //Writes the photo to the server if(move_uploaded_file($_FILES['photo']['tmp_name'], $target)) { //Tells you if its all ok echo "The file ". basename( $_FILES['uploadedfile']['name']). " has been uploaded, and your information has been added to the directory"; } else { //Gives and error if its not echo "Sorry, there was a problem uploading your file."; } //-----------------------CODE FOR SAVING IMAGE ENDS // print out the results if( $results ) { if($username_too_short==3142){echo"ShortUser=".$username_too_short;} if($username_already_in_use==3141){echo"UserTaken=".$username_already_in_use;} if($email_already_in_use==3144){echo"EmailTaken=".$email_already_in_use;} if($pw_insecure==3145){echo"ShortPass=".$pw_insecure;} if($bad_email==3143){echo"BadEmail".$bad_email;} //echo( "<font size='2' face='Verdana, Arial, Helvetica, sans-serif'>Your changes have been made sucessfully. <br><br><a href='login.php'>Back to login</a></font> " ); } else { die( "Trouble saving information to the database: " . mysql_error() ); } //--------------------------------------AGAIN?! THIS IS FOR THE FIRST ENTRY I THINK $sql="SELECT * FROM users"; $result=mysql_query($sql); $count=mysql_num_rows($result); if($count==1){ $query = "UPDATE `users` SET `permissions`='5' WHERE `email`='$email'"; //---------------------------------------SAVE the info to the database $results = mysql_query( $query ); //---------------------------------------JUST PRINT CODE if( $results ) { echo( "ADMINCREATED" ); } else { die( "ERRORSAVINGADMIN" . mysql_error() ); } } ?>

和我的iOS代码我很确定工作正常：

and my iOS code I'm pretty sure is working fine:

-(void)callASIHTTP{ NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"www.myserver/learn/login/user_save2.php"]]; // Upload an NSData instance NSData *imageData = UIImageJPEGRepresentation(self.pickedImage, 90); ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url]; [request addPostValue:self.userName.text forKey:@"username"]; [request addPostValue:self.userPass.text forKey:@"password"]; [request addPostValue:self.userEmail.text forKey:@"email"]; [request addData:imageData withFileName:self.userName.text andContentType:@"image/jpeg" forKey:@"photo"]; //check if passedData is nil if (imageData == nil) { UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"title:iDnil" message:@"msg:iDnil" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alertView show]; [alertView release]; } //completion blocks [request setCompletionBlock:^{ NSString *responseString = [request responseString]; if (responseString == nil) { UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"title:rStrg" message:@"msg:rStrg" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alertView show]; [alertView release]; } }]; [request setFailedBlock:^{ NSError *error = [request error]; NSLog(@"Error: %@", error.localizedDescription); }]; [request startAsynchronous]; }

推荐答案

我知道你的问题..我面临着微笑的问题..你必须给出图像的路径..以下代码将从路径中获取图像..如果图像在你的目录索引中你必须得到的路径很少尝试这个让我知道..

I know your problem.. I have faced the smilar issue.. You have to give the path for the image.. The following code will get the image from the path.. if the image is in your directory index you have to get the path little different.. Try this and let me know..

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:@"photo.jpg"]; [request setFile:[NSURL URLWithString:dataPath] forKey:@"photo"]; //IF the photo is in directory index use the following code to get the url NSString *filename = [[NSBundle mainBundle] pathForResource:@"photo" ofType:@"png"]; [request setFile:[NSURL URLWithString:filename] forKey:@"photo"];

这里是你必须为UIImagePicker写的代码

Ok here is the code you have to write for UIImagePicker

- (void) imagePickerController:(UIImagePickerController *)thePicker didFinishPickingMediaWithInfo:(NSDictionary *)imageInfo { imagePicker = nil; UIImage *image = [imageInfo objectForKey:@"UIImagePickerControllerEditedImage"]; image = [image roundedCornerImage:23.5 borderSize:1]; // Get the data for the image as a JPEG NSData* imageData = UIImageJPEGRepresentation(image, 0.5); // Give a name to the file NSString* imageName = @"photo.png"; // Now, we have to find the documents directory so we can save it // Note that you might want to save it elsewhere, like the cache directory, or something similar. NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString* documentsDirectory = [paths objectAtIndex:0]; // Now we get the full path to the file NSString* fullPathToFile = [documentsDirectory stringByAppendingPathComponent:imageName]; [imageData writeToFile:fullPathToFile atomically:NO]; myPicture = imageData; myPicturePath = fullPathToFile; // Dismissing the image picker view [self dismissModalViewControllerAnimated: YES]; }

上传图片时使用此代码..您将设置myPicture路径来自图像选择器..

While uploading the image use this code.. You will have the myPicture path set from the image picker..

Request setFile:myPicturePath forKey:@"photo"];

以下代码是从文档目录中获取图像并发送它..

The following code is to get the image from the document directory and send it..

NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString* documentsDirectory = [paths objectAtIndex:0]; // Now we get the full path to the file NSString* fullPathToFile = [documentsDirectory stringByAppendingPathComponent:@"photo.png"]; [imageData writeToFile:fullPathToFile atomically:NO]; [Request setFile:fullPathToFile forKey:@"photo"];