如何解决 AFNetworking 中的 header 问题？

Question

数据在 Postman 应用程序中运行良好，但在代码中运行不正常。下面是代码

  NSString* link = [NSString stringWithFormat:@"http://apifm.azurewebsites.net/token"];

AFHTTPRequestOperationManager* manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:nil];

manager.responseSerializer = [AFJSONResponseSerializer serializer];
manager.requestSerializer = [AFJSONRequestSerializer serializer];
[manager.requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];

[manager.requestSerializer setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];


[manager POST:link parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

    NSMutableData *email = [[NSMutableData alloc] init];
    NSMutableData *password = [[NSMutableData alloc] init];
    NSMutableData *grantType = [[NSMutableData alloc] init];
    [email appendData:[[NSString stringWithFormat:@"testman1@foodmandu.com"] dataUsingEncoding:NSUTF8StringEncoding]];
    [password appendData:[[NSString stringWithFormat:@"testUserPw"] dataUsingEncoding:NSUTF8StringEncoding]];
    [grantType appendData:[[NSString stringWithFormat:@"password"] dataUsingEncoding:NSUTF8StringEncoding]];

    [formData appendPartWithFormData:email name:@"UserName"];
    [formData appendPartWithFormData:password name:@"Password"];
    [formData appendPartWithFormData:grantType name:@"grant_type"];

} success:^(AFHTTPRequestOperation* operation, id responseObject) {





    NSLog(@"success");

} failure:^(AFHTTPRequestOperation* operation, NSError* error){


    [API alertViewWithMessage:[[operation responseObject] objectForKey:@"error"] inController:self];
}];

以下是Postman app的截图

下面给出了我在执行代码时遇到的错误

error Error Domain=com.alamofire.error.serialization.response Code=-1011 "Request failed: bad request (400)" UserInfo=0x7faf3b6d6cf0 {com.alamofire.serialization.response.error.response= { URL: http://apifm.azurewebsites.net/token } { status code: 400, headers { "Cache-Control" = "no-cache"; "Content-Length" = 34; "Content-Type" = "application/json;charset=UTF-8"; Date = "Sun, 05 Jul 2015 07:11:19 GMT"; Expires = "-1"; Pragma = "no-cache"; Server = "Microsoft-IIS/8.0"; "Set-Cookie" = "ARRAffinity=ebb02fb6b319b5ae83e167620f3bc3ad6e68d31fb30aff79ef123aabd981588e;Path=/;Domain=apifm.azurewebsites.net"; "X-Powered-By" = "ASP.NET"; } }, NSErrorFailingURLKey=http://apifm.azurewebsites.net/token, com.alamofire.serialization.response.error.data=<7b226572 726f7222 3a22756e 73757070 6f727465 645f6772 616e745f 74797065 227d>, NSLocalizedDescription=Request failed: bad request (400)}

提醒您，数据在 Postman 中运行良好。

Answer 1

您应该将参数作为 NSDictionary 传递，例如“NSDictionary *parameters = @{@"UserName": @"testman1@foodmandu.com", @"Password": @"testUserPw", @ "grant_type": @"password"}; "

这可以使用以下代码实现：

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *parameters =  @{@"UserName": @"testman1@foodmandu.com", @"Password": @"testUserPw", @"grant_type": @"password"};
[manager POST:@"http://apifm.azurewebsites.net/token" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

请尝试以上操作，并让我知道您的反馈。

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