将图像发布到 IOS 中的 PHP Web 服务

Question

我制作了一些图像视图及其下方的按钮。当用户从图库中选择图像时，它会显示在图像视图上。现在我希望通过 PHP Web 服务将该图像发送到服务器并使用 POST 方法。我希望它首先将其转换为 base64 位。谁能帮我？ 我的代码是 NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init]; [dateFormat setDateFormat:@"ddMMyyyyHHmmss"];

NSData *data = UIImageJPEGRepresentation(_img1.image, 1.0);
UIImage *imagedata = [UIImage imageWithData:data];

NSString * base64String = [data base64EncodedStringWithOptions:0];
NSDate *now = [[NSDate alloc] init];
NSString *theDate = [dateFormat stringFromDate:now];

//---------- Compress photo----------
double compressionRatio = 1;
int resizeAttempts = 5;
while ([data length] > 1000 && resizeAttempts > 0)
{
    resizeAttempts -= 1;
    compressionRatio = compressionRatio*0.6;
    data = UIImageJPEGRepresentation(imagedata,compressionRatio);

}

NSString *baseurl = @"myurl";
NSURL *dataURL = [NSURL URLWithString:baseurl];

NSMutableURLRequest *dataRqst = [NSMutableURLRequest requestWithURL:dataURL cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:500.0];
[dataRqst setHTTPMethod:@"POST"];

NSString *stringBoundary = @"0xKhTmLbOuNdArY---This_Is_ThE_BoUnDaRyy---pqo";
NSString *headerBoundary = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",stringBoundary];

[dataRqst addValue:headerBoundary forHTTPHeaderField:@"Content-Type"];

NSMutableData *postBody = [NSMutableData data];

// -------------------- ---- image Upload Status -----------------------
[postBody appendData:[[NSString stringWithFormat:@"--%@\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"image\"; filename=\"%@\"\r\n",[NSString stringWithFormat:@"%@.jpeg",theDate]] dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[@"Content-Type: image/jpeg\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:data];
[postBody appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[postBody appendData:[[NSString stringWithFormat:@"--%@--\r\n", stringBoundary] dataUsingEncoding:NSUTF8StringEncoding]];
[dataRqst setHTTPBody:postBody];

self.conn = [[NSURLConnection alloc] initWithRequest:dataRqst delegate:self];

 //SubmitDetailsViewController *presales = [self.storyboard instantiateViewControllerWithIdentifier:@"SubmitDetailsViewController"];
// [self.navigationController pushViewController:presales animated:YES];

}

pragma mark NSURLConnection 委托方法

• (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { self->recieveData = [[NSMutableData alloc] init]; }

//------------- 来自服务器的响应 ------------- - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [ self->recieveData appendData:data];

NSError* error;
NSDictionary* json = [NSJSONSerialization JSONObjectWithData:data
                                                     options:kNilOptions
                                                       error:&error];

}

Answer 1

您可以使用AFNetworking 库来执行此操作。将AFNetworking 添加到您的项目并将AFNetworking.h 导入您的课程，然后您可以执行类似的操作，

  UIImageView *imageView;  // your image view

NSData *imgData = UIImageJPEGRepresentation(imageView.image, 1.0);

NSString *base64ImageStr = [imgData base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];

NSString *strToSend = [base64ImageStr stringByReplacingOccurrencesOfString:@"+" withString:@"%2B"];

NSDictionary *parameters = @{@"yourServerKeyOrParameterForImage" : strToSend};  // you can add other parameters as well

AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

[[manager POST:@"your url" parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

    NSLog(@"your response : %@",responseObject);

} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {

    NSLog(@"error : %@",error.localizedDescription);

}]resume];