iOS Post上传图片, 文件流的形式
2018-08-14 本文已影响1208人
錒伟
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);
}];
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