Question

我为同一个问题找了几个答案......但是无法弄清楚这个问题......我收到了这个错误

*由于未捕获的异常'NSInvalidArgumentException'而终止应用，原因：'* + [NSJSONSerialization dataWithJSONObject：options：error：]：JSON中的顶级类型无效写“

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

试试这个

直接在通话中传递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);
}];

AFNetworking发送JSON作为POST请求的参数

1 个答案: