ios - 来自 json 错误的数据类型 application/x-www-form-urlencoded

Question

我有一个问题:

我需要使用json向php发布帖子，但它只响应数据类型x-www-form-urlencoded，我使用了google chrome的 postman ，而不是form-data完成，我用这种方式但告诉我参数不正确，我需要帮助:

NSString *jsonRequest = [NSString stringWithFormat:@"j_username=%@&j_password=%@",nombre,pass];
NSURL *url = [NSURL URLWithString:urlhttp];
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:[NSString stringWithFormat:@"%d", [requestData length]] forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];

[request setHTTPBody: requestData];
[NSURLConnection connectionWithRequest:request delegate:self];

Answer 1

对于初学者:

1. 您的字符串与 JSON 无关。这只是一个普通的字符串
2. 您的用户名和密码必须经过 URL 编码
3. [NSData dataWithBytes:[jsonRequest UTF8String] length:[jsonRequest length]] 错误。您必须使用 [NSData dataWithBytes:[jsonRequest UTF8String] length:[[jsonRequest UTF8String] length]]