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wheel's avatar
wheel
Explorer | Level 4
7 years ago

Response headers

when i use dropbox api for uploading file.  the http header contain chinese, for example: "Dropbox-API-Arg:{\"path\": \"/Test/中文.doc\",\"mode\": \"add\",\"autorename\": true,\"mute\": false,\"stric...
API
wheel's avatar
wheel
Explorer | Level 4

Thanks for replying.

I use dropbox api with winhttp and c.

Now, i'm trying to encode chinese to unicode. For example:

"工作.doc" -->  "\u5de5\u4f5c.doc" ,

and the header is ：

Dropbox-API-Arg:{\"path\": \"/Test/\u5de5\u4f5c.doc\",\"mode\": \"add\",\"autorename\": true,\"mute\": false,\"strict_conflict\": false}.

But it also response error message:

Error in call to API function "files/upload": HTTP header "Dropbox-API-Arg": could not decode input as JSON.

So, if i want to create the filename with chinese,  what format should i input to header? 

Greg-DB's avatar
Greg-DB
Icon for Dropbox Staff rankDropbox Staff
7 years ago

It looks like you're properly escaping the Unicode characters, but you have an extra period at the end of the string, making it invalid JSON. Remove that extra "." and try again.

  • wheel's avatar
    wheel
    Explorer | Level 4
    7 years ago

    thanks for replying. 

    the " . " it actualy not at the end of the string , i accidentally added it in the api-arg.

    i tryed to solve it by other ways.

    in addition , what formats for path in dropbox-api header? utf-8? or unicode ? 

    • Greg-DB's avatar
      Greg-DB
      Icon for Dropbox Staff rankDropbox Staff
      7 years ago

      The value sent in the header should be all ASCII, with JSON-style “\uXXXX” escape codes for the character 0x7F and all non-ASCII characters. The last sample you shared is correct, except for that period.

      The path format itself is the same as elsewhere in the API. That is, non-root paths should start with "/" and also use "/" as the path component delimiter. 

      If something still isn't working as expected, please share some code that reproduces the issue so we can investigate.

      • wheel's avatar
        wheel
        Explorer | Level 4
        7 years ago

        i add the header by the winapi WinHttpAddRequestHeaders.

        and then,if the header as follows:

        Dropbox-API-Arg:{\"path\": \"/Test/中文\",\"mode\": \"add\",\"autorename\": true,\"mute\": false,\"strict_conflict\": false}
Content-Type: application/octet-stream
Authorization: Bearer < token >

        my ide is vs2017, i put these string in the array . and i use the function MultiByteToWideChar() encode the header to  LPCWSTR. it will response error message.

        in other words, if  the path contain Chinese characters, it will response errror message.

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