AFNetworking发送JSON作为POST请求的参数

我为同一个问题做了几个答案…但无法弄清楚这个问题..我得到这个错误

由于未捕获的exception“NSInvalidArgumentException”，原因：'* + [NSJSONSerialization dataWithJSONObject：options：error：]：JSON中无效的顶级types'

我的代码是：

NSDictionary *loginDict=[[NSDictionary alloc] initWithObjectsAndKeys:password.text,@"password",userName.text,@"userName",nil]; NSError *error; NSData *jsonData = [NSJSONSerialization dataWithJSONObject:loginDict options:NSJSONWritingPrettyPrinted error:&error]; if (jsonData) { NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]; } else { NSLog(@"Got an error: %@", error); } AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager]; manager.requestSerializer = [AFJSONRequestSerializer serializer]; [manager.requestSerializer setTimeoutInterval:20]; [manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"]; [manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; manager.responseSerializer = [AFJSONResponseSerializer serializer]; manager.responseSerializer = [AFJSONResponseSerializer serializerWithReadingOptions:NSJSONReadingAllowFragments]; [manager POST:baseUrlLogin parameters:jsonString success:^(AFHTTPRequestOperation *operation, id responseObject) { NSLog(@"JSON: %@", responseObject); } failure:^(AFHTTPRequestOperation *operation, NSError *error) { NSLog(@"Error: %@", error); }]; 

Answer 1

尝试这个

直接在你的电话中传递loginDict并检查

 manager.requestSerializer = [AFJSONRequestSerializer serializer]; /* [manager.requestSerializer setTimeoutInterval:20]; [manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"]; [manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; manager.responseSerializer = [AFJSONResponseSerializer serializer]; manager.responseSerializer = [AFJSONResponseSerializer serializerWithReadingOptions:NSJSONReadingAllowFragments]; */ [manager POST:baseUrlLogin parameters: loginDict success:^(AFHTTPRequestOperation *operation, id responseObject) { NSLog(@"JSON: %@", responseObject); } failure:^(AFHTTPRequestOperation *operation, NSError *error) { NSLog(@"Error: %@", error); }];