afn post请求上传文件_iOS Post上传图片, 文件流的形式

布满荆棘的人生 2022-11-06 01:51 246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 \*)images name:(NSString \*)name fileName:(NSString \*)fileName mimeType:(NSString \*)mimeType progress:(HttWWrogress)progress success:(HttpRequestSuccess)success failure:(HttpRequestFailed)failure showHub:(BOOL)showHub;

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

\[UIApplication sharedApplication\].networkActivityIndicatorVisible = YES;

NSMutableDictionary \*dic = \[\[NSMutableDictionary alloc\]initWithDictionary:parameters\];

AFHTTPSessionManager \*manager = \[self createAFHTTPSessionManager:showHub\];

return \[manager POST:URL parameters:dic constructingBodyWithBlock:^(id \_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 \_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) \{