使用Json在Objective C中发布数据 [英] Post data in Objective C using Json
问题描述
我正在尝试将数据发布到PHP Web服务。
我很熟悉使用查询$ .post在html中执行此操作,但我很难在目标C中尝试此操作。
我试过几个博客&在stackoverflow上找到的问题。
I am trying to post data to a PHP web service.
I am familiar doing this in html using query $.post but I am very much stumped trying this in objective C.
I tried several blogs & questions found on stackoverflow.
我终于想出了以下代码:
I finally came up with the following code:
NSString *jsonRequest = [NSString stringWithFormat:@"{\"Email\":\"%@\",\"FirstName\":\"%@\"}",user,fname];
NSLog(@"Request: %@", jsonRequest);
NSURL *url = [NSURL URLWithString:@"http:myurl..."];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
NSData *requestData = [NSData dataWithBytes:[jsonRequest UTF8String] length:[jsonRequest length]];
[request setHTTPMethod:@"POST"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:[NSString stringWithFormat:@"%d", [requestData length]] forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody: requestData];
NSURLConnection *connection = [NSURLConnection connectionWithRequest:request delegate:self];
我也试过:
NSURLConnection * connection = [[NSURLConnection alloc] initWithRequest :request delegate:self];
I also tried:
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
我的Web服务在post上创建一个新用户并返回userID。
两者都成功进行了Web服务调用(创建了一个新的userID),但是他们没有发布数据,即每次都创建一个空白用户。
如果我遗失请告诉我任何事情。
My web service creates a new user on post and returns the userID.
Both successfully make the web service call(a new userID is created), however they do not post the data, i.e. a blank user is created every time.
Please tell me if I am missing anything.
谢谢。
我的其他尝试:
NSMutableURLRequest *request =
[[NSMutableURLRequest alloc] initWithURL:
[NSURL URLWithString:@"myUrl.. "]];
[request setHTTPMethod:@"POST"];
NSString *postString = @"Email=me@test.com&FirstName=Test";
[request setValue:[NSString
stringWithFormat:@"%d", [postString length]]
forHTTPHeaderField:@"Content-length"];
[request setHTTPBody:[postString
dataUsingEncoding:NSUTF8StringEncoding]];
[[NSURLConnection alloc]
initWithRequest:request delegate:self];
我终于解决了这个问题:
FInally,弄清楚出了什么问题。我使用 http:// mypath?params = 123 作为我的网址。我没有完整的网址(在其他语言中从不需要它)。但在这里我需要给htt://mypath/index.php?params = 123
I finally solved the issue: FInally, figured out what was wrong. I was using http://mypath?params=123 as my url. I did not gig the complete url(never needed it in other languages). But here I needed to give htt://mypath/index.php?params=123
推荐答案
我觉得你会更好关闭使用NSJSONSerialization类如下:
I think you would be better off using the NSJSONSerialization class like this:
NSDictionary *tmp = [[NSDictionary alloc] initWithObjectsAndKeys:
email, @"Email",
fname, @"FirstName",
nil];
NSError *error;
NSData *postdata = [NSJSONSerialization dataWithJSONObject:tmp options:0 error:&error];
[request setHTTPBody:postData];
使用字典然后将其转换为JSON比创建字符串更容易。
Using a dictionary and then converting it to JSON it's easier than creating it like a string.
祝你好运!
[ SWIFT 3.0 ](更新)
let tmp = ["email": email,
"FirstName": fname]
let postData = try? JSONSerialization.data(withJSONObject: tmp, options: .prettyPrinted)
request.httpBody = postData
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