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International characters in filenames
Hi,
I am migrating to V2 of REST API and I am having problems with endpoints that require passing arguments using "Dropbox-API-Arg" header (for example, https://content.dropboxapi.com/2/files/downl...
Greg-DB
Dropbox Community Moderator
Dropbox Community ModeratorHi Artem, as you saw in the API Explorer, 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 something like:
'Dropbox-API-Arg': http_header_safe_json({ path: dropboxFilePath })
There is Chinese in path like："/blackdog/中文prd.docx“，i see the api explore send Dropbox-API-Arg as follow:
Dropbox-API-Arg:{"path":"/blackdog/\u4e2d\u6587prd.docx"}I am using java to implement http,my Dropbox-API-Arg as follow:
"Dropbox-API-Arg: {"path":"/blackdog/\\u4E2D\\u6587prd.docx"}"In java \\ standard for one \,and dropbox response as follow:
path/not_found/.
How could i resolve the issue?
- Greg-DB
This may depend on your setup, but are you sure you need the double '/'? Have you tried it without it? i.e.,
"Dropbox-API-Arg: {"path":"/blackdog/\u4e2d\u6587prd.docx"}"In any case, we recommend either using the official Dropbox Java SDK, or having a library do the encoding for you. E.g., for Java, using Jackson, it would look like:
JsonFactory f = ... JsonGenerator g = f.createGenerator(...); g.setHighestNonEscapedChar(0x7E);
Actually i use Jackson format json as follow:
String path = "/blackdog/中文PRD.docx"; path = StringEscapeUtils.escapeJava(path); path_req.setPath(path); String header_json = JsonUtils.writeValue(path_req); LoggerUtils.logInfo(this.getClass(), header_json);In java double / standards /,so following code
"Dropbox-API-Arg: {"path":"/blackdog/\u4e2d\u6587prd.docx"}"is correct in Java.
I debuged Dropbox java sdk,and the header Dropbox-API-Arg value is the same as mine
"Dropbox-API-Arg: {"path":"/blackdog/\\u4E2D\\u6587prd.docx"}[\r][\n]"but i got 409 path/not_found/..,dropbox sdk get right response,i don not why.
- Greg-DBIt looks like you opened a new thread for this, so we'll follow up there:
https://www.dropboxforum.com/t5/API-support/HTTP-API-Path-contain-Chinese-response-409-path-not-found/m-p/240031#M13346
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