如何在 HTTP post 中向 PHP 服务器发送多个参数

问题描述

I'm sending base64 string to php server and its working well. Now I want to send another parameter as a string. Can anyone tell me what code need to add in below code.

Below code is working good for single parameter. How can we modify it for multiple parameters?

 NSData *data = [UIImageJPEGRepresentation(imgeview.image,90) base64Encoding];

// Create your request string with parameter name as defined in PHP file
NSString *myRequestString = [NSString stringWithFormat:@"question_image=%@",data];
myRequestString = [myRequestString stringByReplacingOccurrencesOfString:
                                             @"+" withString:@"%2B"];

// Create Data from request
NSData *myRequestData = [NSData dataWithBytes:[myRequestString UTF8String] 
                                       length:[myRequestString length]];
request = [[NSMutableURLRequest alloc] initWithURL:
    [NSURL URLWithString:@"http://192.168.0.101/Mobile_tutor/webservice/question_details.php"]];
// set Request Type
[request setHTTPMethod:@"POST"];
// Set content-type
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"content-type"];
// Set Request Body
[request setHTTPBody:myRequestData];
// Now send a request and get Response
NSData *returnData = [NSURLConnection sendSynchronousRequest:request 
                                           returningResponse:nil 
                                                       error: nil];
// Log Response
NSString *response = [[NSString alloc] initWithBytes:[returnData bytes] 
                                              length:[returnData length]
                                            encoding:NSUTF8StringEncoding];
NSLog(@"-------------%@",response); // here you get reasponse string

For the network operation these is better supporting API like AFNetworking available witch work async and way better to handle

Tutorials for AFNetworking

Get from here

NSArray *keys = @[@"UserID", ];
NSArray *objects = @[@(userId)];

NSDictionary *parameter = [NSDictionary dictionaryWithObjects:objects forKeys:keys];

AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:
                            [NSURL URLWithString:BaseURLString]];
[httpClient setParameterEncoding:AFJSONParameterEncoding];
[httpClient registerHTTPOperationClass:[AFJSONRequestOperation class]];

NSMutableURLRequest *request = [httpClient requestWithMethod:@"POST"
                                                        path:@"services/UserService.svc/GetUserInfo"
                                                  parameters:parameter];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[httpClient registerHTTPOperationClass:[AFHTTPRequestOperation class]];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {

    NSError* error = nil;
    id jsonObject = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingAllowFragments error:&error];
    if ([jsonObject isKindOfClass:[NSDictionary class]]) {
        // do what ever
    }
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

}];

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