我花了一生的时间在互联网上搜索如何使用带有2个字符串的Objective-c将图像上传到服务器以及如何处理JSON响应。
因此，在这个应用程序中，您选择一张照片，然后按下按钮将其上传到PHP服务器，该请求还包括2个必须处理的字符串。请求是POST。
问题在于，而不是接收诸如＆＃34;成功＆＃34;之类的消息。或＆＃34;崩溃＆＃34;从我的JSON，我收到的内容如下：＆lt; 6e6f5f72 65717565 7374＆gt;
Objective-c代码示例（网址因安全原因而受到审查）。
// Convert photo to string
NSString *photoString = [UIImagePNGRepresentation(chosenImage) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
// Crypt ID, photo and magic hashtag
// Create NSData objects
NSData *dataIDSession2PP = [IDSessionPP dataUsingEncoding: NSUTF8StringEncoding];
NSData *dataPhotot2PP= [photoString dataUsingEncoding: NSUTF8StringEncoding];
NSData *dataMagic2PP = [magicString7 dataUsingEncoding: NSUTF8StringEncoding];
// Get NSString from NSData object in Base64
NSString *IDSessionEncode2PP = [dataIDSession2PP base64EncodedStringWithOptions:0];
NSString *photoEncode2PP = [dataPhotot2PP base64EncodedStringWithOptions:0];
NSString *magicEncode2PP = [dataMagic2PP base64EncodedStringWithOptions:0];
// Prepare request for server
NSURL *uploadPhotoURL = [NSURL URLWithString:@"https://www.***************.com/photo.php"];
NSMutableURLRequest *uploadPhotoRequest = [NSMutableURLRequest requestWithURL:uploadPhotoURL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:5.0];
[uploadPhotoRequest setHTTPMethod:@"POST"];
NSMutableData *body = [NSMutableData data];
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
[uploadPhotoRequest addValue:contentType forHTTPHeaderField:@"Content-Type"];
// Profile photo
NSData *imageData = UIImageJPEGRepresentation(chosenImage, 90);
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Disposition: attachment; name=\"image_data\"; filename=\".jpg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
// User session ID
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"member\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString: IDSessionEncode2PP] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
// Magic string
[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"kkkkarondi\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString: magicEncode2PP] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
// Close form
[body appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
// Set request body
[uploadPhotoRequest setHTTPBody:body];
// Get PHP server response
NSURLSession *updateProfileSession = [NSURLSession sharedSession];
NSURLSessionDataTask *dataTask = [updateProfileSession dataTaskWithRequest:uploadPhotoRequest completionHandler:^(NSData *uploadPhotoData, NSURLResponse *uploadPhotoResponse, NSError *uploadPhotoError) {
// Console
NSLog(@"Server data: %@", uploadPhotoData);
NSLog(@"Server repsonse: %@", uploadPhotoResponse);
NSLog(@"Server error: %@", uploadPhotoError);
// Check HTTP response
NSHTTPURLResponse *HTTPResponse = (NSHTTPURLResponse *)uploadPhotoResponse;
if (HTTPResponse.statusCode == 200) {
// Valid status code
// Check if any errors
if (uploadPhotoError != nil) {
// Error found
// Show alert message
UIAlertController *alert =[ UIAlertController alertControllerWithTitle:@"App Name" message: @"We could not upload your photo, please try again." preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *OKButton = [UIAlertAction actionWithTitle: @"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {
// Do nothing
}];
[alert addAction: OKButton];
[self presentViewController:alert animated:YES completion:nil];
} else {
// No errors
// Console
NSLog(@"No errors found");
// Convert data response to dictionary
NSDictionary *uploadPhotoDictionary = [NSJSONSerialization JSONObjectWithData:uploadPhotoData options:0 error:&uploadPhotoError];
NSLog(@"Dictionary: %@", uploadPhotoDictionary);
// Handle messages
/*if () {
// Success
} else if () {
// Database
} else if () {
// Crash
} else if () {
// Upload failed
} else if () {
// Missing values
} else if () {
// Invalid member
} else {
// Unknown error
}*/
}
} else {
// Something went wrong
// Show alert message
UIAlertController *alert =[ UIAlertController alertControllerWithTitle:@"App Name" message: @"Something went wrong while uploading your photo, please try again." preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *OKButton = [UIAlertAction actionWithTitle: @"OK" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {
// Do nothing
}];
[alert addAction: OKButton];
[self presentViewController:alert animated:YES completion:nil];
// Console
NSLog(@"Wrong status code: %ld", (long)HTTPResponse.statusCode);
}
}];
// Send the request
[dataTask resume];
PHP代码示例
<?php
// some secret code goes here
if (isset($_POST['image_data'])) {
// Get POST values
$member_ID = base64_decode($_POST['member']);
$member_ID = base64_decode($_POST['image_data']);
$member_ID = md5(base64_decode($_POST['kkkarondi']));
} else {
// No request
echo "no_hashtag";
exit();
}
// Handle various cases and echo messages
?>
那么如何在Objective-c中处理＆＃34; echo＆＃34;？
返回的消息提前谢谢！