盒子文件上传api从iOS是行不通的 [英] box file upload api from iOS is not working

问题描述

我正尝试使用框的HTTP API（不是iOS SDK）将文件上传到box帐户，但由于某种原因，它不能正常工作并返回状态码400.以下代码中的错误是什么？

  NSString * uploadURL = @https://upload.box.com/api/2.0/files/content; 
 NSURLSessionConfiguration * config = [NSURLSessionConfiguration defaultSessionConfiguration]; 
 
 NSURLSession * upLoadSession = [NSURLSession sessionWithConfiguration：config delegate：self delegateQueue：nil]; 
 
 NSMutableURLRequest * request = [[NSMutableURLRequest alloc] initWithURL：[NSURL URLWithString：uploadURL]]; 
 [request setHTTPMethod：@POST]; 
 
 [请求addValue：[NSString stringWithFormat：@Bearer％@，@box_access_token_here] forHTTPHeaderField：@Authorization]; 
 
 NSString * boundary = @some_random_boundary_value; 
 NSString * contentType = [NSString stringWithFormat：@multipart / form-data; boundary =％@，boundary]; 
 [request addValue：contentType forHTTPHeaderField：@Content-Type]; 
 NSMutableData * body = [NSMutableData data]; 
 
 [body appendData：[[NSString stringWithFormat：@ - ％@ \r\\\
，boundary] dataUsingEncoding：NSUTF8StringEncoding]]; 
 [body appendData：[@Content-Disposition：form-data; name = \attributes\\r\\\
\r\\\
dataUsingEncoding：NSUTF8StringEncoding]]; 
 [body appendData：[@Content-Type：application / json\r\\\
\r\\\
dataUsingEncoding：NSUTF8StringEncoding]]; 
 [body appendData：[[NSString stringWithFormat：@'{\name \：\％@ \，\parent \：{\id \ ：\％@ \}}'，@file_name，@box_folder_id] dataUsingEncoding：NSUTF8StringEncoding]]; 
 
 [body appendData：[[NSString stringWithFormat：@\r\\\
  - ％@ \r\\\
，boundary] dataUsingEncoding：NSUTF8StringEncoding]]; 
 [body appendData：[@Content-Disposition：form-data; name = \file \\r\\\
dataUsingEncoding：NSUTF8StringEncoding]]; 
 [body appendData：[[NSString stringWithFormat：@Content-Type：％@ \r\\\
\r\\\
，@mime_type] dataUsingEncoding：NSUTF8StringEncoding]]; 
 [body appendData：UIImageJPEGRepresentation（someUIImage，1.0）]; 
 
 [body appendData：[[NSString stringWithFormat：@\r\\\
  - ％@  -  \r\\\
，boundary] dataUsingEncoding：NSUTF8StringEncoding]]; 
 [request setValue：[NSString stringWithFormat：@％lu，（unsigned long）body.length] forHTTPHeaderField：@Content-Length]; 
 [request setHTTPBody：body]; 
 
 NSURLSessionUploadTask * uploadTask = [upLoadSession uploadTaskWithRequest：request fromData：body completionHandler：^（NSData * data，NSURLResponse * response，NSError * error）{
 if（error）{
 NSLog（@％@，error.debugDescription）; 
}其他{
 NSLog（@％@，@成功上传）; 
} 
}]; 
 
 [uploadTask resume]; 
  

解决方案

我不确定代码有什么问题，当试图按照这里描述的方式实现上传时，我得到了同样的 400 Bad Request https://box-content.readme.io/#upload-a-file 。

我最终复制了Android示例代码使用的行为 - 它与API文档中的行为有些不同：

  Content-Type：多部分/格式的数据; border = dcf6d5da-6b79-4d80-8503-9ca17037e7c3 
内容长度：757 
 --dcf6d5da-6b79-4d80-8503-9ca17037e7c3 
内容处置：form-data; name =parent_id
 Content-Type：text / plain; charset = UTF-8 
 Content-Length：10 
 Content-Transfer-Encoding：binary 
 
 3973764013 
 --dcf6d5da-6b79-4d80-8503-9ca17037e7c3 
内容处理：表单数据; NAME = 文件名;文件名=你的文件名
 Content-Type：text / html 
 Content-Length：300 
 Content-Transfer-Encoding：binary 
 
文件二进制内容到这里
 --dcf6d5da-6b79-4d80-8503-9ca17037e7c3-- 
  

请注意如何使用 parent_id 和文件名部分 - 这与API文档中的意见完全不同。 / p>

I am trying to upload a file to a box account using box's HTTP API (not iOS SDK), but for some reason its not working and returning status code 400. What is my mistake in the following code?

NSString *uploadURL = @"https://upload.box.com/api/2.0/files/content";
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];

NSURLSession *upLoadSession = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:nil];

NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:uploadURL]];
[request setHTTPMethod:@"POST"];

[request addValue:[NSString stringWithFormat:@"Bearer %@", @"box_access_token_here"] forHTTPHeaderField:@"Authorization"];

NSString *boundary = @"some_random_boundary_value";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary];
[request addValue:contentType forHTTPHeaderField:@"Content-Type"];
NSMutableData *body = [NSMutableData data];

[body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Disposition: form-data; name=\"attributes\"\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: application/json\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"'{\"name\":\"%@\", \"parent\":{\"id\":\"%@\"}}'", @"file_name", @"box_folder_id"] dataUsingEncoding:NSUTF8StringEncoding]];

[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Disposition: form-data; name=\"file\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:@"Content-Type: %@\r\n\r\n", @"mime_type"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:UIImageJPEGRepresentation(someUIImage, 1.0)];

[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setValue:[NSString stringWithFormat:@"%lu", (unsigned long)body.length] forHTTPHeaderField:@"Content-Length"];
[request setHTTPBody:body];

NSURLSessionUploadTask *uploadTask = [upLoadSession uploadTaskWithRequest:request fromData:body completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    if (error) {
        NSLog(@"%@", error.debugDescription);
    } else {
        NSLog(@"%@", @"Successfully uploaded");
    }
}];

[uploadTask resume];

解决方案

I'm not sure what is wrong with code but I was getting the same 400 Bad Request when tried to implement upload in the way it's described here https://box-content.readme.io/#upload-a-file.

I ended up replicating behavior that Android sample code uses - and it's somewhat different from what is in API docs:

Content-Type: multipart/form-data; boundary=dcf6d5da-6b79-4d80-8503-9ca17037e7c3
Content-Length: 757
--dcf6d5da-6b79-4d80-8503-9ca17037e7c3
Content-Disposition: form-data; name="parent_id"
Content-Type: text/plain; charset=UTF-8
Content-Length: 10
Content-Transfer-Encoding: binary

3973764013
--dcf6d5da-6b79-4d80-8503-9ca17037e7c3
Content-Disposition: form-data; name="filename"; filename="your-file-name"
Content-Type: text/html
Content-Length: 300
Content-Transfer-Encoding: binary

your file binary content goes here
--dcf6d5da-6b79-4d80-8503-9ca17037e7c3--

Please note how parent_id and filename parts are used - this is quite in contrast to what is advices in API docs.

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