json 使用 AFNetworking 和 HTTP 基本身份验证

Using AFNetworking and HTTP Basic Authentication

提问by Paul Sylling

The following code successfully connects to my Ruby on Rails API and returns JSON using AFNetworking. What do I need to do to edit this to pass in a username and password so my API can use HTTP Basic Authentication?

以下代码成功连接到我的 Ruby on Rails API 并使用 AFNetworking 返回 JSON。我需要做什么来编辑它以传递用户名和密码，以便我的 API 可以使用 HTTP 基本身份验证？

I've read their documentation, but I am new to both Objective-C and AFNetworking and it isn't currently making sense.

我已经阅读了他们的文档，但我对 Objective-C 和 AFNetworking 都是新手，目前没有意义。

NSURL *url = [[NSURL alloc] initWithString:@"http://localhost:3000/tasks.json"];

NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];

AFJSONRequestOperation *operation = [AFJSONRequestOperation
                                     JSONRequestOperationWithRequest:request
                                     success:^(NSURLRequest *request
                                     , NSHTTPURLResponse *response
                                     , id JSON) {

    self.tasks = [JSON objectForKey:@"results"];
    [self.activityIndicatorView stopAnimating];
    [self.tableView setHidden:NO];
    [self.tableView reloadData];

    NSLog(@"JSON");

} failure:^(NSURLRequest *request
                , NSHTTPURLResponse *response
                , NSError *error
                , id JSON) {
    NSLog(@"Request Failed with Error: %@, %@", error, error.userInfo);
}];

[operation start];

回答by gilletty

Answer updated for AFNetworking 2.x

为 AFNetworking 2.x 更新了答案

For AFNetworking 2.x:

对于 AFNetworking 2.x：

In 2.x, they did away with AFHTTPClient, so you'll need to extend AFHTTPRequestOperationManager with your own class. Then, you can call that class from other code. For example, here's a sample class that extends the AFHTTPRequestOperationManager:

在 2.x 中，他们取消了 AFHTTPClient，因此您需要使用您自己的类扩展 AFHTTPRequestOperationManager。然后，您可以从其他代码调用该类。例如，这是一个扩展 AFHTTPRequestOperationManager 的示例类：

SBAPIManager.h:

SBAPIManager.h：

#import "AFHTTPRequestOperationManager.h"

@interface SBAPIManager : AFHTTPRequestOperationManager

- (void)setUsername:(NSString *)username andPassword:(NSString *)password;

+ (SBAPIManager *)sharedManager;

@end

SBAPIManager.m:

SBAPIManager.m:

#import "SBAPIManager.h"
#import "AFNetworkActivityIndicatorManager.h"

@implementation SBAPIManager

#pragma mark - Methods

- (void)setUsername:(NSString *)username andPassword:(NSString *)password
{
    [self.requestSerializer clearAuthorizationHeader];
    [self.requestSerializer setAuthorizationHeaderFieldWithUsername:username password:password];
}

#pragma mark - Initialization

- (id)initWithBaseURL:(NSURL *)url
{
    self = [super initWithBaseURL:url];
    if(!self)
        return nil;

    self.requestSerializer = [AFJSONRequestSerializer serializer];

    [[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES];

    return self;
}

#pragma mark - Singleton Methods

+ (SBAPIManager *)sharedManager
{
    static dispatch_once_t pred;
    static SBAPIManager *_sharedManager = nil;

    dispatch_once(&pred, ^{ _sharedManager = [[self alloc] initWithBaseURL:[NSURL URLWithString:@"http://localhost:3000"]]; }); // You should probably make this a constant somewhere
    return _sharedManager;
}

@end

Then, in your code, you can call it like this:

然后，在您的代码中，您可以这样调用它：

[[SBAPIManager sharedManager] setUsername:yourUsernameVariableHere andPassword:yourPasswordVariableHere];

[[SBAPIManager sharedManager] GET:@"/tasks.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    self.tasks = [responseObject objectForKey:@"results"];
    [self.activityIndicatorView stopAnimating];
    [self.tableView setHidden:NO];
    [self.tableView reloadData];

    NSLog(@"JSON");
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    // error stuff here
}];

---

---

For AFNetworking 1.x:

对于 AFNetworking 1.x：

The best practice for this in AFNetworking is to extend the AFHTTPClient with your own class. Then, you can call that class from other code. For example, here's a sample class that extends the AFHTTPClient:

AFNetworking 中的最佳实践是使用您自己的类扩展 AFHTTPClient。然后，您可以从其他代码调用该类。例如，这是一个扩展 AFHTTPClient 的示例类：

SBAPIManager.h:

SBAPIManager.h：

#import "AFNetworking/AFHTTPClient.h"

@interface SBAPIManager : AFHTTPClient

- (void)setUsername:(NSString *)username andPassword:(NSString *)password;

+ (SBAPIManager *)sharedManager;

@end

SBAPIManager.m:

SBAPIManager.m:

#import "SBAPIManager.h"
#import "AFJSONRequestOperation.h"
#import "AFNetworkActivityIndicatorManager.h"

@implementation SBAPIManager

#pragma mark - Methods

- (void)setUsername:(NSString *)username andPassword:(NSString *)password
{
    [self clearAuthorizationHeader];    
    [self setAuthorizationHeaderWithUsername:username password:password];
}

#pragma mark - Initialization

- (id)initWithBaseURL:(NSURL *)url
{
    self = [super initWithBaseURL:url];
    if(!self)
        return nil;

    [self registerHTTPOperationClass:[AFJSONRequestOperation class]];
    [self setDefaultHeader:@"Accept" value:@"application/json"];
    [self setParameterEncoding:AFJSONParameterEncoding];

    [[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES];

    return self;
}

#pragma mark - Singleton Methods

+ (SBAPIManager *)sharedManager
{
    static dispatch_once_t pred;
    static SBAPIManager *_sharedManager = nil;

    dispatch_once(&pred, ^{ _sharedManager = [[self alloc] initWithBaseURL:[NSURL URLWithString:@"http://localhost:3000"]]; }); // You should probably make this a constant somewhere
    return _sharedManager;
}

@end

Then, in your code, you can call it like this:

然后，在您的代码中，您可以这样调用它：

[[SBAPIManager sharedManager] setUsername:yourUsernameVariableHere andPassword:yourPasswordVariableHere];

[[SBAPIManager sharedManager] getPath:@"/tasks.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    self.tasks = [responseObject objectForKey:@"results"];
    [self.activityIndicatorView stopAnimating];
    [self.tableView setHidden:NO];
    [self.tableView reloadData];

    NSLog(@"JSON");
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    // error stuff here
}];