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Forum Discussion
Accented characters in file name
I m using Dropbox V2 API and when try to upload a file with name 'tête-à-tête' getting following error
Error in call to API function "files/upload_session/finish": HTTP header "Dropbox-API-Arg": could not decode input as JSON
Also if my folder name is 'tête-à-tête' then uploading any file inside it also goes to folder 't�te-�-t�te'.
In this case Accented character changed in header.
I m using .Net with C#
Please suggest.
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, in C#, using Json.NET/JsonTextWriter, that would look like:
var sb = new StringBuilder(); var textWriter = new JsonTextWriter(new StringWriter(sb)); textWriter.StringEscapeHandling = StringEscapeHandling.EscapeNonAscii; // Write things to text writer textWriter.WriteStartArray(); textWriter.WriteValue("Hello"); ... var result = sb.toString().Replace("\x7f", "\\u007f");Or, using Json.NET/JsonConvert:
var serializerSettings = new JsonSerializerSettings(); serializerSettings.StringEscapeHandling = StringEscapeHandling.EscapeNonAscii; var result = JsonConvert.SerializeObject(..., serializerSettings); result = result.Replace("\x7f", "\\u007f");
- 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, in C#, using Json.NET/JsonTextWriter, that would look like:
var sb = new StringBuilder(); var textWriter = new JsonTextWriter(new StringWriter(sb)); textWriter.StringEscapeHandling = StringEscapeHandling.EscapeNonAscii; // Write things to text writer textWriter.WriteStartArray(); textWriter.WriteValue("Hello"); ... var result = sb.toString().Replace("\x7f", "\\u007f");Or, using Json.NET/JsonConvert:
var serializerSettings = new JsonSerializerSettings(); serializerSettings.StringEscapeHandling = StringEscapeHandling.EscapeNonAscii; var result = JsonConvert.SerializeObject(..., serializerSettings); result = result.Replace("\x7f", "\\u007f");Thanks Greg-DB , it is working absolutely fine.
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