iOS-Post上传图片, 文件流的形式

ゞ浴缸里的玫瑰 2023-10-18 21:11 27阅读 0赞

最近看到群里很多小伙伴有问上传图片服务器收不到, 解析不了. 可以说就一个属性 ContentType , 不论你使用第三方的AFN, 还是自己封装NSURLSesstion. 都需要把ContentType 设置和后台的解析方式一样(可能术语不是很标准, 总之就这个意思哈,谅解)

下面贴两段上传图片代码不过可能只是针对我的服务器. 只要和后台同学沟通好就行了

一, 自己封装afn的请求

\*\*\*\*\*\*\*\*\*\*.h

/**
     *  上传图片文件
     *
     *  @param URL        请求地址
     *  @param parameters 请求参数
     *  @param images     图片数组
     *  @param name       文件对应服务器上的字段
     *  @param fileName   文件名
     *  @param mimeType   图片文件的类型,例:png、jpeg(默认类型)....
     *  @param progress   上传进度信息
     *  @param success    请求成功的回调
     *  @param failure    请求失败的回调
     *
     *  @return 返回的对象可取消请求,调用cancle方法
     */
    + (WWURLSessionTask *)uploadWithURL:(NSString *)URL parameters:(NSDictionary *)parameters images:(NSArray<UIImage *> *)images name:(NSString *)name fileName:(NSString *)fileName mimeType:(NSString *)mimeType progress:(HttWWrogress)progress success:(HttpRequestSuccess)success failure:(HttpRequestFailed)failure showHub:(BOOL)showHub;

\*\*\*\*\*\*\*\*\*.m

+ (WWURLSessionTask *)uploadWithURL:(NSString *)URL parameters:(NSDictionary *)parameters images:(NSArray<UIImage *> *)images name:(NSString *)name fileName:(NSString *)fileName mimeType:(NSString *)mimeType progress:(HttWWrogress)progress success:(HttpRequestSuccess)success failure:(HttpRequestFailed)failure showHub:(BOOL)showHub
    {
        [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
        NSMutableDictionary *dic = [[NSMutableDictionary alloc]initWithDictionary:parameters];
        AFHTTPSessionManager *manager = [self createAFHTTPSessionManager:showHub];
        return [manager POST:URL parameters:dic constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
            
            //压缩-添加-上传图片
            [images enumerateObjectsUsingBlock:^(UIImage * _Nonnull image, NSUInteger idx, BOOL * _Nonnull stop) {
                NSData *imageData = UIImageJPEGRepresentation(image, 0.5);
                [formData appendPartWithFileData:imageData name:name fileName:[NSString stringWithFormat:@"%@%ld.%@",fileName,idx,mimeType?mimeType:@"jpeg"] mimeType:[NSString stringWithFormat:@"image/%@",mimeType?mimeType:@"jpeg"]];
            }];
        } progress:^(NSProgress * _Nonnull uploadProgress) {
            //上传进度
            progress ? progress(uploadProgress) : nil;
            
        } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
            [SVProgressHUD dismiss];
            success(responseObject);
            WWLog(@"responseObject 上传成功= %@",responseObject);
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
            [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
            [SVProgressHUD dismiss];
            failure ? failure(error) : nil;
            WWLog(@"error = %@",error);
        }];
    }

二 . AFN 经典图片上传

//此body是向后台传的参数, 因为是上传图片, 所以只给个图片名就够了, 这个和后台去问
        NSDictionary * body = @{@"category":@"user",@"file":@"HeadImg"};
        AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    
        //ContentType设置
        manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/html",@"image/jpeg",@"image/png",@"application/octet-stream",@"text/json",nil];
    
        manager.requestSerializer= [AFHTTPRequestSerializer serializer];
        manager.responseSerializer= [AFHTTPResponseSerializer serializer];
    
       
        [manager POST:url parameters:body constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
    
    //把image  转为data , POST上传只能传data
            NSData *data = UIImagePNGRepresentation(image);
            //上传的参数(上传图片，以文件流的格式)
            [formData appendPartWithFileData:data
                                        name:@"file"
                                    fileName:@"gauge.png"
    
                                    mimeType:@"image/png"];
        } progress:^(NSProgress * _Nonnull uploadProgress) {
        } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
    
    　　//请求成功的block回调
    
            NSDictionary * dic = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingAllowFragments error:nil];
            NSLog(@"上传成功%@",dic);
        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
              NSLog(@"上传失败%@",error);
        }];