很快，我实现了自己的 ResponseSerializer，它只是一种封装 AFNetworkingSerializer 的方法（~AFHTTPResponseSerializer 是其他的超类，并尊重AFURLResponseSerialization 协议），它将返回一个自定义序列化对象, 除了 NSDictionary/NSArray 序列化对象之外，它还将具有您想要的 2 个属性：NSData 和 NSString。
.h
@interface CustomResponseSerializer : NSObject <AFURLResponseSerialization>
-(id)initWithResponseSerializer:(id<AFURLResponseSerialization>)serializer;
@end
.m
@interface CustomResponseSerializer()
@property (nonatomic, strong) id<AFURLResponseSerialization> serializer;
@end
@implementation CustomResponseSerializer
-(id)initWithResponseSerializer:(id<AFURLResponseSerialization>)serializer {
self = [super init];
if (self)
{
_serializer = serializer;
}
return self;
}
- (nullable id)responseObjectForResponse:(nullable NSURLResponse *)response data:(nullable NSData *)data error:(NSError * _Nullable __autoreleasing * _Nullable)error {
id serialized = nil;
if ([_serializer respondsToSelector:@selector(responseObjectForResponse:data:error:)]) {
NSError *serializationError = nil;
serialized = [_serializer responseObjectForResponse:response data:data error:&serializationError];
}
//You could put NSError *serializationError = nil; before, and set it into the `CustomSerializedObject` `error` property, I didn't check more about AFNetworking and how they handle a parsing error
return [[CustomSerializedObject alloc] initWithData:data
string:[[NSString alloc] initWithData:data encoding: NSUTF8StringEncoding]
object:serialized];
}
+ (BOOL)supportsSecureCoding {
return YES;
}
- (void)encodeWithCoder:(nonnull NSCoder *)coder {
[coder encodeObject:self.serializer forKey:NSStringFromSelector(@selector(serializer))];
}
- (nullable instancetype)initWithCoder:(nonnull NSCoder *)coder {
self = [self init];
if (!self) {
return nil;
}
self.serializer = [coder decodeObjectForKey:NSStringFromSelector(@selector(serializer))];
return self;
}
- (nonnull id)copyWithZone:(nullable NSZone *)zone {
CustomResponseSerializer *serializer = [[CustomResponseSerializer allocWithZone:zone] init];
serializer.serializer = [self.serializer copyWithZone:zone];
return serializer;
}
@end
还有对象：
@interface CustomSerializedObject: NSObject
@property (nonatomic, strong) NSData *rawData;
@property (nonatomic, strong) NSString *string;
@property (nonatomic, strong) id object;
@property (nonatomic, strong) NSError *error; //If needed
-(id)initWithData:(NSData *)data string:(NSString *)string object:(id)object;
@end
@implementation CustomSerializedObject
-(id)initWithData:(NSData *)data string:(NSString *)string object:(id)object {
self = [super init];
if (self)
{
_rawData = data;
_string = string;
_object = object;
}
return self;
}
@end
使用方法：
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
NSURL *URL = [NSURL URLWithString:@"https://httpbin.org/get"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
CustomResponseSerializer *responseSerializer = [[CustomResponseSerializer alloc] initWithResponseSerializer:[AFJSONResponseSerializer serializer]];
[manager setResponseSerializer: responseSerializer];
NSURLSessionDataTask *task = [manager dataTaskWithRequest:request
uploadProgress:nil
downloadProgress:nil
completionHandler:^(NSURLResponse * _Nonnull response, CustomSerializedObject * _Nullable responseObject, NSError * _Nullable error) {
NSLog(@"Response: %@", response);
NSLog(@"ResponseObject data: %@", responseObject.rawData); //If you want hex string ouptut see https://stackoverflow.com/questions/1305225/best-way-to-serialize-an-nsdata-into-a-hexadeximal-string
NSLog(@"ResponseObject str: %@", responseObject.string);
NSLog(@"ResponseObject object: %@", responseObject.object);
NSLog(@"error: %@", error);
}];
[task resume];