ios - 在 IOS 中将图像发布到 PHP Web 服务

Question

我制作了一些 ImageView 及其下方的按钮。当用户从图库中选择图像时，它会显示在 ImageView 中。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。我希望它先将其转换为 base64 位。

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 Delegate Methods

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

//------------- Response from server -------------
- (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库来做到这一点。将 AFNetworking 添加到您的项目并将 AFNetworking.h 导入到您的类中，然后您可以执行以下操作:

  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];