Post

1.传递n个参数

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"text/plain",@"application/json", @"text/json", @"text/javascript" ,nil];
    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    params[@"param1"] = @"like1";
        [manager POST: [[NSString stringWithFormat:@"your@URL"] stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet characterSetWithCharactersInString:@"#%^{}\"[]|\\<> "].invertedSet] parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            NSLog(@"请求成功：%@",responseObject);
            
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
            NSLog(@"请求失败：%@",error);

        }];

2.下载图片

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"text/plain",@"application/json", @"text/json", @"text/javascript" ,nil];
    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    params[@"param1"] = @"imageName";
        [manager POST: [[NSString stringWithFormat:@"your@URL"] stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet characterSetWithCharactersInString:@"#%^{}\"[]|\\<> "].invertedSet] parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            NSLog(@"请求成功：%@",responseObject);
            self.imageView.image = [UIImage imageWithData:responseObject];
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
            NSLog(@"请求失败：%@",error);
        }];

GET

iOS的好像不支持get请求，将参数封装在body里。想要的只有自己弄了吧（https://www.jianshu.com/p/ba9063406adf）

    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",nil];
    [manager GET:@"your@URL" parameters:nil progress:nil success:^(NSURLSessionTask *task, id responseObject) {
        NSLog(@"请求成功：%@",responseObject);

    } failure:^(NSURLSessionTask *operation, NSError *error) {
        NSLog(@"Error: %@", error);
    }];

PUT

1.更新用户名字

    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    params[@"tel"] = [[NSUserDefaults standardUserDefaults] valueForKey:@"userPhone"];
    params[@"name"] = name;
    
    NSMutableURLRequest * request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"PUT" URLString:@"your@URL" parameters:params constructingBodyWithBlock:nil error:nil];
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"application/json",@"text/javascript",@"text/json",@"text/plain", nil];
    // 使用表单的方式进行提交, uploadTaskWithStreamedRequest  另一个直接上传FileURL 的方式,会报错500
    NSURLSessionUploadTask * task =  [manager uploadTaskWithStreamedRequest:request progress:^(NSProgress * _Nonnull uploadProgress) {} completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {
        if (error) {
            NSLog(@"服务器出问题：%@",error);
        }
        
        NSLog(@"参数%@名称已经更新%@",params,responseObject);
    }];
    
    [task resume];

2.更新图片

NSData *imageData = UIImageJPEGRepresentation(image, 0.2);
    NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
    NSString* userTel = [user valueForKey:@"userPhone"];
    NSDictionary *paramDic = @{@"tel":userTel};

    NSMutableURLRequest * request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"PUT" URLString:@"your@URL" parameters:paramDic constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        [formData appendPartWithFileData:imageData name:@"newImg" fileName:[userTel stringByAppendingString:@".jpg"] mimeType:@"image/jpg"];
        //多个图片，在这里继续增加就行
    } error:nil];
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"application/json",@"text/javascript",@"text/json",@"text/plain", nil];
    // 使用表单的方式进行提交, uploadTaskWithStreamedRequest  另一个直接上传FileURL 的方式,会报错500
    NSURLSessionUploadTask * task =  [manager uploadTaskWithStreamedRequest:request progress:^(NSProgress * _Nonnull uploadProgress) {

    } completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {
        if (error) {
            NSLog(@"服务器出问题：%@",error);
        }
        else{}
    }];

    [task resume];

DELETE

未尝试在body中设置参数

1.删除特定

        AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
        manager.requestSerializer.HTTPMethodsEncodingParametersInURI = [NSSet setWithObjects:@"GET", @"HEAD", nil];//必须有，否则失败。对于我这边的服务器
        manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"text/html",@"text/plain",@"application/json", @"text/json", @"text/javascript" ,nil];
        NSString* finalURL = [NSString new];
        
        NSLog(@"params%@",finalURL);
        [manager DELETE: [finalURL stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet characterSetWithCharactersInString:@"+#%^{}\"[]|\\<> "].invertedSet] parameters:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            NSLog(@"删除档案成功：%@",responseObject);
            
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
            NSLog(@"删除档案失败：%@",error);
        }];

补充说明

1.NSLog(@"请求成功：%@",responseObject); 输出Unicode，解决办法，删除json初始方方式。

2.自动异步，所以如果需求，异步操作都完成之后再统一操作，需要增加GCD操作，利用group的enter和leave，达到同步的目的

3. manager.responseSerializer = [AFHTTPResponseSerializer serializer]; 在现在图片的时候使用，避免text balabala错误

更新

停止所有请求任务，这里需要设置一个全局的@property AFHTTPSessionManager *manager

    for (NSURLSessionTask* task in _manager.tasks) {
        [task cancel];
    }

线程问题

当开启并发队列的时候，如果访问修改单列的值，可能会造成内存错误，目前没找到解决的方法