AFNetworking网络请求与图片上传工具（POST）

AFNetworking网络请求与图片上传工具（POST）

.h文件

#import <Foundation/Foundation.h>

/** 成功Block  */
typedef void(^SuccessBlockType) (id responsData);
/** 失败Block  */
typedef void(^FaileBlockType) (NSError *error);

@interface NetDataEngine : NSObject

//网络请求
+ (void)postServerUrl:(NSString *)url parameters:(NSDictionary *)parameters success:(SuccessBlockType)success failure:(FaileBlockType)failure;

//上传图片
+ (void)uploadWith:(UIImage *)upImg success:(SuccessBlockType)success failure:(FaileBlockType)failure;

@end

.m文件

#import "NetDataEngine.h"
#import "AFNetworking.h"

@implementation NetDataEngine

+(AFHTTPSessionManager *)manager
{
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];

    // 声明上传的是json格式的参数，需要你和后台约定好，不然会出现后台无法获取到你上传的参数问题
    manager.requestSerializer = [AFHTTPRequestSerializer serializer]; // 上传普通格式
    //    manager.requestSerializer = [AFJSONRequestSerializer serializer]; // 上传JSON格式

    // 声明获取到的数据格式
    manager.responseSerializer = [AFHTTPResponseSerializer serializer]; // AFN不会解析,数据是data，需要自己解析
    //    manager.responseSerializer = [AFJSONResponseSerializer serializer]; // AFN会JSON解析返回的数据
    // 个人建议还是自己解析的比较好，有时接口返回的数据不合格会报3840错误，大致是AFN无法解析返回来的数据
    // 超时时间
    [manager.requestSerializer willChangeValueForKey:@"timeoutInterval"];

    manager.requestSerializer.timeoutInterval = 10.f;//设置请求超时时间

    [manager.requestSerializer didChangeValueForKey:@"timeoutInterval"];

    return manager;
}

+ (void)postServerUrl:(NSString *)url parameters:(NSDictionary *)parameters success:(SuccessBlockType)success failure:(FaileBlockType)failure {

    AFHTTPSessionManager *manager = [self manager];

    [manager POST:url parameters:parameters progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil];

//        JGLog(@"%@",dict);
        success(dict);

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
//        JGLog(@"error:  %@",error);
        failure(error);
    }];
}

+ (void)uploadWith:(UIImage *)upImg success:(SuccessBlockType)success failure:(FaileBlockType)failure {

    // 创建管理者对象
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    [manager POST:UP_PIC parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {

        // 获取图片数据
        NSData *fileData = UIImagePNGRepresentation(upImg);

        // 设置上传图片的名字
        NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
        formatter.dateFormat = @"yyyyMMddHHmmss";
        NSString *str = [formatter stringFromDate:[NSDate date]];
        NSString *fileName = [NSString stringWithFormat:@"%@.png", str];

        [formData appendPartWithFileData:fileData name:@"image" fileName:fileName mimeType:@"image/png"];

    } progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        //上传成功后回调
        success(responseObject);
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        //失败回调

        failure(error);
    }];
}

@end

如果网络请求超时，就在请求失败中执行超时操作，如：取消指示器，提示用户网络存在问题等。

　if (error.code == -1001) {

　　[MBProgressHUD showError:@"网络超时，请检查网络"];

}

　　//隐藏指示器

[SVProgressHUD dismiss];