iOS - 基于AFN的网络请求封装

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基于AFN的网络请求封装

• .h文件

#import <Foundation/Foundation.h>

/** 请求类型的枚举 */
typedef NS_ENUM(NSUInteger, SkyHttpRequestType)
{
    /** get请求 */
    SkyHttpRequestTypeGet = 0,
    /** post请求 */
    SkyHttpRequestTypePost
};

/**
 http通讯成功的block

 @param responseObject 返回的数据
 */
typedef void (^SkyHTTPRequestSuccessBlock)(id responseObject);

/**
 http通讯失败后的block

 @param error 返回的错误信息
 */
typedef void (^SkyHTTPRequestFailedBlock)(NSError *error);


//超时时间
extern NSInteger const kAFNetworkingTimeoutInterval;


@interface AFNetworkingManager : NSObject

/**
 *  网络请求的实例方法
 *
 *  @param type         get / post (项目目前只支持这倆中)
 *  @param urlString    请求的地址
 *  @param parameters   请求的参数
 *  @param successBlock 请求成功回调
 *  @param failureBlock 请求失败回调
 */
+ (void)requestWithType:(SkyHttpRequestType)type
              urlString:(NSString *)urlString
             parameters:(NSDictionary *)parameters
           successBlock:(SkyHTTPRequestSuccessBlock)successBlock
           failureBlock:(SkyHTTPRequestFailedBlock)failureBlock;

/**
 取消队列
 */
+(void)cancelDataTask;
@end

• .m文件

#import "AFNetworkingManager.h"
#import "AFHTTPSessionManager.h"


NSInteger const kAFNetworkingTimeoutInterval = 10;


@implementation AFNetworkingManager

static AFHTTPSessionManager *aManager;
+ (AFHTTPSessionManager *)sharedAFManager
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        aManager = [AFHTTPSessionManager manager];
        //以下三项manager的属性根据需要进行配置
        aManager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"text/xml",@"text/json",@"text/plain",@"text/JavaScript",@"application/json",@"image/jpeg",@"image/png",@"application/octet-stream",nil];
        
        aManager.responseSerializer = [AFHTTPResponseSerializer serializer];
        // 设置超时时间
        aManager.requestSerializer.timeoutInterval = kAFNetworkingTimeoutInterval;
    });
    return aManager;
}

+ (void)requestWithType:(SkyHttpRequestType)type
              urlString:(NSString *)urlString
             parameters:(NSDictionary *)parameters
           successBlock:(SkyHTTPRequestSuccessBlock)successBlock
           failureBlock:(SkyHTTPRequestFailedBlock)failureBlock
{
    if (urlString == nil)
    {
        return;
    }
    
    if (@available(iOS 9.0, *)) {
        urlString = [urlString stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
    }else {
        urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    }
    
    
    if (type == SkyHttpRequestTypeGet)
    {
        
        [[self sharedAFManager] GET:urlString parameters:parameters progress:^(NSProgress * _Nonnull downloadProgress) {
            
        } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            
            if (successBlock)
            {
                successBlock(responseObject);
            }
            
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
            
            if (error.code !=-999) {
                if (failureBlock)
                {
                    failureBlock(error);
                }
            }
            else{
                NSLog(@"取消队列了");
            }
        }];
        
    }
    
    if (type == SkyHttpRequestTypePost)
    {
        
        [[self sharedAFManager] POST:urlString parameters:parameters progress:^(NSProgress * _Nonnull uploadProgress) {
            
        } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            
            if (successBlock)
            {
                successBlock(responseObject);
            }
            
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
            
            if (error.code !=-999) {
                if (failureBlock)
                {
                    failureBlock(error);
                }
            }
            else{
                NSLog(@"取消队列了");
            }
            
        }];
    }
}

+(void)cancelDataTask
{
    NSMutableArray *dataTasks = [NSMutableArray arrayWithArray:[self sharedAFManager].dataTasks];
    for (NSURLSessionDataTask *taskObj in dataTasks) {
        [taskObj cancel];
    }
}
@end

主要步骤

• 创建的AFNetworkingManager类继承自NSObject类

• 请求类型用枚举定义

/** 请求类型的枚举 */
typedef NS_ENUM(NSUInteger, SkyHttpRequestType)
{
    /** get请求 */
    SkyHttpRequestTypeGet = 0,
    /** post请求 */
    SkyHttpRequestTypePost
};

• 用block回调请求结果

/**
 http通讯成功的block

 @param responseObject 返回的数据
 */
typedef void (^SkyHTTPRequestSuccessBlock)(id responseObject);

/**
 http通讯失败后的block

 @param error 返回的错误信息
 */
typedef void (^SkyHTTPRequestFailedBlock)(NSError *error);

• 在.m文件中导入#import "AFHTTPSessionManager.h"，并获取AFHTTPSessionManager类単例

static AFHTTPSessionManager *aManager;
+ (AFHTTPSessionManager *)sharedAFManager
{
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        aManager = [AFHTTPSessionManager manager];
        //以下三项manager的属性根据需要进行配置
        aManager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"text/xml",@"text/json",@"text/plain",@"text/JavaScript",@"application/json",@"image/jpeg",@"image/png",@"application/octet-stream",nil];
        
        aManager.responseSerializer = [AFHTTPResponseSerializer serializer];
        // 设置超时时间
        aManager.requestSerializer.timeoutInterval = kAFNetworkingTimeoutInterval;
    });
    return aManager;
}

• failure返回的"error.code == -999"为取消请求队列

            if (error.code !=-999) {
                if (failureBlock)
                {
                    failureBlock(error);
                }
            }
            else{
                NSLog(@"取消队列了");
            }

• 以上

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