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HTTP API Path contain Chinese response 409 path not found?
I reply my question here:https://www.dropboxforum.com/t5/API-support/International-characters-in-filenames/m-p/175750#M6947
but not resolved,so i open a new post to illustate my issue:
There is C...
Greg-DB
Dropbox Community Moderator
Dropbox Community ModeratorYour code sample uses some custom classes so I can't run it, but this runs fine for me:
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
public class Main {
public static void main(String[] args) throws IOException {
String ACCESS_TOKEN = "<ACCESS_TOKEN>";
String filePath = "/blackdog/中文prd.docx";
JsonFactory jsonFactory = new JsonFactory();
OutputStream outputStream = new ByteArrayOutputStream();
JsonGenerator jsonGenerator = jsonFactory.createGenerator(outputStream);
jsonGenerator.setHighestNonEscapedChar(0x7E);
jsonGenerator.writeStartObject();
jsonGenerator.writeStringField("path", filePath);
jsonGenerator.writeEndObject();
jsonGenerator.close();
String arg = outputStream.toString();
System.out.println(arg);
CloseableHttpClient httpclient = HttpClients.createDefault();
try {
HttpPost httpost = new HttpPost("https://content.dropboxapi.com/2/files/get_preview");
httpost.setHeader("Authorization", "Bearer " + ACCESS_TOKEN);
httpost.setHeader("Dropbox-API-Arg", arg);
ResponseHandler<String> responseHandler = new ResponseHandler<String>() {
@Override
public String handleResponse(final HttpResponse response) throws IOException {
int status = response.getStatusLine().getStatusCode();
System.out.println(status);
HttpEntity entity = response.getEntity();
return entity != null ? EntityUtils.toString(entity) : null;
}
};
String responseBody = httpclient.execute(httpost, responseHandler);
System.out.println(responseBody);
} finally {
httpclient.close();
}
}
}
That outputs:
{"path":"/blackdog/\u4E2D\u6587prd.docx"}
200
%PDF-1.4
%Çì¢
<more PDF content truncated for brevity>
I tried use the following code to generate the Dropbox-API-Arg header value,and work correctly
DropboxContentReq req = new DropboxContentReq(DropboxAPI.PREVIEW);
req.setHttp_method(HttpMethod.POST);
String filePath = "/blackdog/中文prd.docx";
JsonFactory jsonFactory = new JsonFactory();
OutputStream outputStream = new ByteArrayOutputStream();
JsonGenerator jsonGenerator = jsonFactory.createGenerator(outputStream);
jsonGenerator.setHighestNonEscapedChar(0x7E);
jsonGenerator.writeStartObject();
jsonGenerator.writeStringField("path", filePath);
jsonGenerator.writeEndObject();
jsonGenerator.close();
String arg = outputStream.toString();
System.out.println(arg);
DropboxPathReq _req = new DropboxPathReq();
//convert Chinese to Unicode /blackdog/\\u4E2D\\u6587prd.docx
filePath = StringEscapeUtils.escapeJava(filePath);
_req.setPath(filePath);
//concat the json work
String json_header = "{\"path\":\"" + filePath + "\"}";
//use arg as header value work correct
//req.getHeaders().add("Dropbox-API-Arg",json_header);
req.getHeaders().add("Dropbox-API-Arg",json_header);
String json = dropbox_api_service.callDropbox(req);
LoggerUtils.logInfo(this.getClass(), json);
and i concat the Dropbox-API-Arg header json value,work correctly too,
String json_header = "{\"path\":\"" + filePath + "\"}";
I use Jackson ObjectMapper generate the header value before,the difference is
{"path":"/blackdog/\\u4E2D\\u6587prd.docx"}
there are two \ in the json string,maybe is violate the HTTP HEADER spec,i will check http header value spec later,any way thanks for your time.
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