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Forum Discussion
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,\"strict_conflict\": false}".
it will response error message:
Error in call to API function "files/upload": HTTP header "Dropbox-API-Arg": could not decode input as JSON.
how should i do?
thanks.
- Greg-DB
Dropbox Staff
For these calls with the parameters in the header, you need to escape these characters. That is, when you use the “Dropbox-API-Arg” header, you need to make it “HTTP header safe”. This means using JSON-style “\uXXXX” escape codes for the character 0x7F and all non-ASCII characters.
Some, but not all, languages/libraries do this for you. For example, for JavaScript, to do this yourself you could do something like this:
var charsToEncode = /[\u007f-\uffff]/g;
function http_header_safe_json(v) {
return JSON.stringify(v).replace(charsToEncode,
function(c) {
return '\\u'+('000'+c.charCodeAt(0).toString(16)).slice(-4);
}
);
}and then:
"Dropbox-API-Arg": http_header_safe_json(arg)
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
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.
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