iOS基础之网络请求相关

1、AFNetwork二次封装方法一：

#import <Foundation/Foundation.h>

@interface BeeNetworkManager : NSObject

/**
 *  POST网络请求
 *  每个请求都添加公共参数
 */
+ (void)POSTWithUrlString:(NSString *)urlString parameters:(NSMutableDictionary *)parameters success:(void (^)(id responseObject))success fail:(void (^)(NSError *error))fail;

/**
 *  GET网络请求
 */
+ (void)GETWithUrlString:(NSString *)urlString parameters:(NSMutableDictionary *)parameters success:(void (^)(id responseObject))success fail:(void (^)(NSError *error))fail;

@end

#import "BeeNetworkManager.h"
#import "AFNetworking.h"

@interface BeeNetworkManager ()

@end

@implementation BeeNetworkManager

+ (void)POSTWithUrlString:(NSString *)urlString parameters:(NSMutableDictionary *)parameters success:(void (^)(id responseObject))success fail:(void (^)(NSError *error))fail
{
    // SDK封装
    NSURLSessionConfiguration* configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    configuration.protocolClasses = @[[ICG_SDK protolClass]];
    AFHTTPSessionManager* sessionManager = [[AFHTTPSessionManager alloc] initWithBaseURL:nil sessionConfiguration:configuration];
    
    [sessionManager.tasks makeObjectsPerformSelector:@selector(cancel)];
    
    NSString *urlStr = [BASE_URL stringByAppendingString:urlString];
    
    if (parameters == nil) {
        parameters = [NSMutableDictionary dictionary];
    }
    // 添加公共参数
    parameters = [self addPublicParametersWithDictionary:parameters];
    
    [sessionManager POST:urlStr parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        success(responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        fail(error);
    }];
}

+ (void)GETWithUrlString:(NSString *)urlString parameters:(NSMutableDictionary *)parameters success:(void (^)(id responseObject))success fail:(void (^)(NSError *error))fail
{
    // SDK封装
    NSURLSessionConfiguration* configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    configuration.protocolClasses = @[[ICG_SDK protolClass]];
    AFHTTPSessionManager* sessionManager = [[AFHTTPSessionManager alloc] initWithBaseURL:nil sessionConfiguration:configuration];
    sessionManager.responseSerializer = [AFHTTPResponseSerializer serializer];
    
    [sessionManager.tasks makeObjectsPerformSelector:@selector(cancel)];
    
    NSString *urlStr = [BASE_URL stringByAppendingString:urlString];
    
    if (parameters == nil) {
        parameters = [NSMutableDictionary dictionary];
    }
    parameters = [self addPublicParametersWithDictionary:parameters];
    
    [sessionManager GET:urlStr parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        success(responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        fail(error);
    }];
}

/*---------- 公共参数 ----------*/
+ (NSMutableDictionary *)addPublicParametersWithDictionary:(NSMutableDictionary *)parameters
{
    return parameters;
}

@end

2、AFNetwork二次封装方法二：

#import "AFHTTPSessionManager.h"

@interface BeeCustomNetworkManager : AFHTTPSessionManager

@end

#import "BeeCustomNetworkManager.h"

@implementation BeeCustomNetworkManager

+ (instancetype)manager
{
    return [[self alloc] initWithBaseURL:nil];
}

- (instancetype)init
{
    return [self initWithBaseURL:nil];
}

- (instancetype)initWithBaseURL:(NSURL *)url
{
    // SDK封装
    NSURLSessionConfiguration* configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    configuration.protocolClasses = @[[ICG_SDK protolClass]];
    return [self initWithBaseURL:url sessionConfiguration:configuration];
}

- (NSURLSessionDataTask *)POST:(NSString *)URLString parameters:(id)parameters progress:(void (^)(NSProgress * _Nonnull))uploadProgress success:(void (^)(NSURLSessionDataTask * _Nonnull, id _Nullable))success failure:(void (^)(NSURLSessionDataTask * _Nullable, NSError * _Nonnull))failure
{
    // 拼接URL
    NSString *urlStr = [BASE_URL stringByAppendingString:URLString];
    // 设置公共参数
    if (parameters == nil) {
        parameters = [NSMutableDictionary dictionary];
    }
    parameters = [self addPublicParametersWithDictionary:parameters];
    
    return [super POST:urlStr parameters:parameters progress:uploadProgress success:success failure:failure];
}

- (NSURLSessionDataTask *)GET:(NSString *)URLString parameters:(id)parameters progress:(void (^)(NSProgress * _Nonnull))downloadProgress success:(void (^)(NSURLSessionDataTask * _Nonnull, id _Nullable))success failure:(void (^)(NSURLSessionDataTask * _Nullable, NSError * _Nonnull))failure
{
    // 拼接URL
    NSString *urlStr = [BASE_URL stringByAppendingString:URLString];
    // 设置公共参数
    if (parameters == nil) {
        parameters = [NSMutableDictionary dictionary];
    }
    parameters = [self addPublicParametersWithDictionary:parameters];
    
    return [super GET:urlStr parameters:parameters progress:downloadProgress success:success failure:failure];
}

/*---------- 公共参数 ----------*/
- (NSMutableDictionary *)addPublicParametersWithDictionary:(NSMutableDictionary *)parameters
{
    return parameters;
}

3、网络请求取消相关：

取消请求：两种取消请求方式

// 取消之前的所有请求，manager 还可以发请求
[self.manager.tasks makeObjectsPerformSelector:@selector(cancel)];

// 取消请求后，manager 再也不可用发请求了
[self.manager invalidateSessionCancelingTasks:YES];