第八篇、封装NSURLSession网络请求框架
主要功能介绍：
1.GET请求操作
2.POST请求操作
1.处理params参数（例如拼接成：usename="123"&password="123"）
#import <Foundation/Foundation.h> @interface LYURLRequestSerialization : NSObject +(NSString *)LYQueryStringFromParameters:(NSDictionary *)parameters; @end
#import "LYURLRequestSerialization.h" @interface LYURLRequestSerialization() @property (readwrite, nonatomic, strong) id value; @property (readwrite, nonatomic, strong) id field; @end @implementation LYURLRequestSerialization - (id)initWithField:(id)field value:(id)value { self = [super init]; if (!self) { return nil; } self.field = field; self.value = value; return self; } #pragma mark - FOUNDATION_EXPORT NSArray * LYQueryStringPairsFromDictionary(NSDictionary *dictionary); FOUNDATION_EXPORT NSArray * LYQueryStringPairsFromKeyAndValue(NSString *key, id value); +(NSString *)LYQueryStringFromParameters:(NSDictionary *)parameters { NSMutableArray *mutablePairs = [NSMutableArray array]; for (LYURLRequestSerialization *pair in LYQueryStringPairsFromDictionary(parameters)) { [mutablePairs addObject:[pair URLEncodedStringValue]]; } return [mutablePairs componentsJoinedByString:@"&"]; } NSArray * LYQueryStringPairsFromDictionary(NSDictionary *dictionary) { return LYQueryStringPairsFromKeyAndValue(nil, dictionary); } NSArray * LYQueryStringPairsFromKeyAndValue(NSString *key, id value) { NSMutableArray *mutableQueryStringComponents = [NSMutableArray array]; NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"description" ascending:YES selector:@selector(compare:)]; if ([value isKindOfClass:[NSDictionary class]]) { NSDictionary *dictionary = value; for (id nestedKey in [dictionary.allKeys sortedArrayUsingDescriptors:@[ sortDescriptor ]]) { id nestedValue = dictionary[nestedKey]; if (nestedValue) { [mutableQueryStringComponents addObjectsFromArray:LYQueryStringPairsFromKeyAndValue((key ? [NSString stringWithFormat:@"%@[%@]", key, nestedKey] : nestedKey), nestedValue)]; } } } else if ([value isKindOfClass:[NSArray class]]) { NSArray *array = value; for (id nestedValue in array) { [mutableQueryStringComponents addObjectsFromArray:LYQueryStringPairsFromKeyAndValue([NSString stringWithFormat:@"%@[]", key], nestedValue)]; } } else if ([value isKindOfClass:[NSSet class]]) { NSSet *set = value; for (id obj in [set sortedArrayUsingDescriptors:@[ sortDescriptor ]]) { [mutableQueryStringComponents addObjectsFromArray:LYQueryStringPairsFromKeyAndValue(key, obj)]; } } else { [mutableQueryStringComponents addObject:[[LYURLRequestSerialization alloc] initWithField:key value:value]]; } return mutableQueryStringComponents; } static NSString * LYPercentEscapedStringFromString(NSString *string) { static NSString * const kLYCharactersGeneralDelimitersToEncode = @":#[]@"; // does not include "?" or "/" due to RFC 3986 - Section 3.4 static NSString * const kLYCharactersSubDelimitersToEncode = @"!$&'()*+,;="; NSMutableCharacterSet * allowedCharacterSet = [[NSCharacterSet URLQueryAllowedCharacterSet] mutableCopy]; [allowedCharacterSet removeCharactersInString:[kLYCharactersGeneralDelimitersToEncode stringByAppendingString:kLYCharactersSubDelimitersToEncode]]; static NSUInteger const batchSize = 50; NSUInteger index = 0; NSMutableString *escaped = @"".mutableCopy; while (index < string.length) { #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wgnu" NSUInteger length = MIN(string.length - index, batchSize); #pragma GCC diagnostic pop NSRange range = NSMakeRange(index, length); range = [string rangeOfComposedCharacterSequencesForRange:range]; NSString *substring = [string substringWithRange:range]; NSString *encoded = [substring stringByAddingPercentEncodingWithAllowedCharacters:allowedCharacterSet]; [escaped appendString:encoded]; index += range.length; } return escaped; } - (NSString *)URLEncodedStringValue { if (!self.value || [self.value isEqual:[NSNull null]]) { return LYPercentEscapedStringFromString([self.field description]); } else { return [NSString stringWithFormat:@"%@=%@", LYPercentEscapedStringFromString([self.field description]), LYPercentEscapedStringFromString([self.value description])]; } } @end
2.封装请求管理器
#import <Foundation/Foundation.h> @interface LYHTTPRequestOperationManager : NSObject -(void)driveTask:(nullable void(^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(nullable void (^)(NSError *__nullable error))failure; - (instancetype) initWithMethod:(NSString *)method URL:(NSString *)URL parameters:( id)parameters; @end
#import "LYHTTPRequestOperationManager.h" #import "LYURLRequestSerialization.h" @interface LYHTTPRequestOperationManager() @property(nonatomic,strong) NSString *URL; @property(nonatomic,strong) NSString *method; @property(nonatomic,strong) NSDictionary *parameters; @property(nonatomic,strong) NSMutableURLRequest *request; @property(nonatomic,strong) NSURLSession *session; @property(nonatomic,strong) NSURLSessionDataTask *task; @end @implementation LYHTTPRequestOperationManager - (instancetype)initWithMethod:(NSString *)method URL:(NSString *)URL parameters:(id)parameters { self = [super init]; if (!self) { return nil; } self.URL = URL; self.method = method; self.parameters = parameters; self.request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:URL]]; self.session = [NSURLSession sharedSession]; return self; } -(void)test{ NSLog(@"URL = %@",self.URL); } -(void)setRequest{ if ([self.method isEqual:@"GET"]&&self.parameters.count>0) { self.request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[[self.URL stringByAppendingString:@"?"] stringByAppendingString: [LYURLRequestSerialization LYQueryStringFromParameters:self.parameters]]]]; } self.request.HTTPMethod = self.method; if (self.parameters.count>0) { [self.request addValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; } } -(void)setBody{ if (self.parameters.count>0&&![self.method isEqual:@"GET"]) { self.request.HTTPBody = [[LYURLRequestSerialization LYQueryStringFromParameters:self.parameters] dataUsingEncoding:NSUTF8StringEncoding]; } } -(void)setTaskWithSuccess:(void(^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(void (^)(NSError *__nullable error))failure { self.task = [self.session dataTaskWithRequest:self.request completionHandler:^(NSData * data,NSURLResponse *response,NSError *error){ if (error) { failure(error); }else{ if (success) { success(data,response); } } }]; [self.task resume]; } -(void)driveTask:(void(^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(void (^)(NSError *__nullable error))failure { [self setRequest]; [self setBody]; [self setTaskWithSuccess:success failure:failure]; } @end
3.封装适配器
#import <Foundation/Foundation.h> @interface LyNetWork : NSObject +(void)requestWithMethod:(nullable NSString *)method URL:(nullable NSString *)URL success:(nullable void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(nullable void (^)(NSError *__nullable error))failure; +( void)requestGetWithURL:(nullable NSString *)URL success:(nullable void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(nullable void (^)(NSError *__nullable error))failure; +(void)requestGetWithURL:(nullable NSString *)URL parameters:(nullable id) parameters success:(nullable void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(nullable void (^)(NSError *__nullable error))failure; +(void)requestPostWithURL:(nullable NSString *)URL success:(nullable void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(nullable void (^)(NSError *__nullable error))failure; +(void)requestPostWithURL:(nullable NSString *)URL parameters:(nullable id) parameters success:(nullable void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(nullable void (^)(NSError *__nullable error))failure; @end
#import "LyNetWork.h" #import "LYURLRequestSerialization.h" #import "LYHTTPRequestOperationManager.h" @interface LyNetWork() @end @implementation LyNetWork //+(void)requestMethod:(NSString *)method // URL:(NSString *)URL // parameters:(id) parameters // success:(void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success // failure:(void (^)(NSError *__nullable error))failure //{ // // LYHTTPRequestOperationManager *manange = [[LYHTTPRequestOperationManager alloc] initWithMethod:method URL:URL parameters:parameters]; // [manange driveTask:success failure:failure]; //} //不带parameters +(void)requestWithMethod:(NSString *)method URL:(NSString *)URL success:(void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(void (^)(NSError *__nullable error))failure { LYHTTPRequestOperationManager *manange = [[LYHTTPRequestOperationManager alloc] initWithMethod:method URL:URL parameters:nil]; [manange driveTask:success failure:failure]; } //GET不带parameters +(void)requestGetWithURL:(NSString *)URL success:(void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(void (^)(NSError *__nullable error))failure { LYHTTPRequestOperationManager *manange = [[LYHTTPRequestOperationManager alloc] initWithMethod:@"GET" URL:URL parameters:nil]; [manange driveTask:success failure:failure]; } //GET带parameters +(void)requestGetWithURL:(NSString *)URL parameters:(id) parameters success:(void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(void (^)(NSError *__nullable error))failure { LYHTTPRequestOperationManager *manange = [[LYHTTPRequestOperationManager alloc] initWithMethod:@"GET" URL:URL parameters:parameters]; [manange driveTask:success failure:failure]; } //POST不带parameters +(void)requestPostWithURL:(NSString *)URL success:(void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(void (^)(NSError *__nullable error))failure { LYHTTPRequestOperationManager *manange = [[LYHTTPRequestOperationManager alloc] initWithMethod:@"POST" URL:URL parameters:nil]; [manange driveTask:success failure:failure]; } //POST带parameters +(void)requestPostWithURL:(NSString *)URL parameters:(id) parameters success:(void (^)(NSData *__nullable data,NSURLResponse * __nullable response))success failure:(void (^)(NSError *__nullable error))failure { LYHTTPRequestOperationManager *manange = [[LYHTTPRequestOperationManager alloc] initWithMethod:@"POST" URL:URL parameters:parameters]; [manange driveTask:success failure:failure]; } @end
4.使用示例
NSString *postURL = @"http://cityuit.sinaapp.com/p.php"; NSString *getURL= @"http://cityuit.sinaapp.com/1.php"; id parmentersPost = @{ @"username":@"1", @"password":@"1" }; id parmentersGet = @{ @"value":@"Lastday", }; [LyNetWork requestWithMethod:@"POST" URL:@"http://cityuit.sinaapp.com/1.php?value=Lastday" success:^(NSData *data,NSURLResponse *response){ NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"requestWithMethod = %@",string); } failure:^(NSError *error){ NSLog(@"====%@",error); }]; [LyNetWork requestPostWithURL:postURL parameters:parmentersPost success:^(NSData *data,NSURLResponse *response){ NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"requestPostWithURL(带参数) = %@",string); } failure:^(NSError *error){ }]; [LyNetWork requestPostWithURL:postURL success:^(NSData *data,NSURLResponse *response){ NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"requestPostWithURL(不带参数) = %@",string); } failure:^(NSError *error){ }]; [LyNetWork requestGetWithURL:getURL parameters:parmentersGet success:^(NSData *data,NSURLResponse *response){ NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"requestGetWithURL(带参数) = %@",string); } failure:^(NSError *error){ }]; [LyNetWork requestGetWithURL:getURL success:^(NSData *data,NSURLResponse *response){ NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSLog(@"requestGetWithURL(不带参数) = %@",string); } failure:^(NSError *error){ }];
