使用 AFNetworking 2.0 上传图像 [英] Uploading image with AFNetworking 2.0

问题描述

我正用这个把头撞到墙上.我想从库中选择 UIImage 并将其上传到服务器，就像使用 <form action="http://blabla.request.cfm" method="post" enctype="multipart/form-data">.我得到了这个错误，而不是成功:

I'm banging my head against the wall with this one. I want to select UIImage from library and upload it to server, like on could do with <form action="http://blabla.request.cfm" method="post" enctype="multipart/form-data">. Instead of success I got this error:

error = Error Domain=NSCocoaErrorDomain Code=3840操作无法完成.(Cocoa 错误 3840.)"(JSON 文本没有以数组或对象开头，并且允许未设置片段的选项.) UserInfo=0x145e5d90{NSDebugDescription=JSON 文本不以数组或对象开头，并允许未设置片段的选项.}

error = Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (JSON text did not start with array or object and option to allow fragments not set.) UserInfo=0x145e5d90 {NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}

我试过这样:

-(void)uploadPhoto{
NSString *path = @"http://blabla.request.cfm";
NSData *imageData = UIImageJPEGRepresentation(self.imageView.image, 0.9);
int priv = self.isPrivate ? 1 : 0;
NSDictionary *parameters = @{@"username": self.username, @"password" : self.password, @"private" : @(priv), @"photo" : imageData};
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager POST:path parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    if(self.imageView.image){
        [formData appendPartWithFileData:imageData name:@"avatar" fileName:@"avatar.jpg" mimeType:@"image/jpeg"];
    }
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"[UploadVC] success = %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"[UploadVC] error = %@", error);
}];

[self blockView:self.view block:YES];
}

但它不工作...服务器说没有文件.不确定加密是错误的、mime 类型还是什么?

but it's not working... server says that there is no file. Not sure if encrypting is wrong, mime type or what?

也试过这个:

    [manager POST:path parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"[UploadVC] success = %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"[UploadVC] error = %@", error);
}];

还有这个:

    manager.responseSerializer = [AFJSONResponseSerializer serializer];
[manager POST:path parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
    [formData appendPartWithFormData:imageData name:@"photo"];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"[UploadVC] success = %@", responseObject);
    [self blockView:self.view block:NO];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"[UploadVC] error response.object = %@", operation.responseObject);
    [self blockView:self.view block:NO];
}];

没有任何工作.希望有人可以提供帮助，因为我一直坚持下去，并在 SO
上从一个问题到另一个问题tia

nothing is working. Hope someone can help, 'cause I'm stuck with it and circling from question to question here on SO
tia

编辑:新尝试
1) 首先是多部分形式
2) 创建上传任务
他们都没有为我工作，所以我仍在努力解决这个问题，但看不到任何解决方案

EDIT: new attempt
1) first was multi-part form
2) creating upload task
none of them worked for me, so I'm still trying to cope with that, but cannot see any solution

推荐答案

我不确定是哪部分(我认为缺少一些细节)负责，但我终于做到了:) 给你:

I'm not sure which part (I think that some details were missing) was responsible, but I did it finally :) here you go:

-(void)uploadPhoto{
    AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:[NSURL URLWithString:@"http://server.url"]];
    NSData *imageData = UIImageJPEGRepresentation(self.avatarView.image, 0.5);
    NSDictionary *parameters = @{@"username": self.username, @"password" : self.password};
    AFHTTPRequestOperation *op = [manager POST:@"rest.of.url" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        //do not put image inside parameters dictionary as I did, but append it!
        [formData appendPartWithFileData:imageData name:paramNameForImage fileName:@"photo.jpg" mimeType:@"image/jpeg"];
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"Success: %@ ***** %@", operation.responseString, responseObject);
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@ ***** %@", operation.responseString, error);
    }];
    [op start];
}

像魅力一样工作:)

这篇关于使用 AFNetworking 2.0 上传图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！