How to get originalName from a File in quarkus - file-upload

Question

I have an api in quarkus java when I upload the file I can't get the original name of it. When I use File.getName the return I get is this pfx16311440985252189274sfx
`
package br.com.upload.controller;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URLConnection;
import java.nio.file.Files;
import java.nio.file.StandardCopyOption;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import org.jboss.resteasy.annotations.providers.multipart.MultipartForm;
import br.com.upload.entity.MultipartBody;
#Path("upload")
#Produces(MediaType.APPLICATION_JSON)
#Consumes(MediaType.APPLICATION_JSON)
public class UploadController {
#POST
#Consumes(MediaType.MULTIPART_FORM_DATA)
public String sendUploada(#MultipartForm MultipartBody data) throws IOException {
InputStream is = new BufferedInputStream(new FileInputStream(data.file));
// String mimeType = URLConnection.guessContentTypeFromStream(is);
// Long size = data.file.length();
System.out.println("data file " + data.file.getName());
Files.copy(is,
new File("/home/allanfenx/Público/Java/upload/src/main/resources/upload",
"mai.png")
.toPath(),
StandardCopyOption.REPLACE_EXISTING);
return data.fileName;
}
}`
`package br.com.upload.entity;
import java.io.File;
import javax.ws.rs.FormParam;
import javax.ws.rs.core.MediaType;
import org.jboss.resteasy.annotations.providers.multipart.PartType;
public class MultipartBody {
#FormParam("file")
#PartType(MediaType.APPLICATION_OCTET_STREAM)
public File file;
#FormParam("fileName")
#PartType(MediaType.APPLICATION_JSON)
public String fileName;
}`
This is my code quarkus uses InputStream but I'm using File. The code works perfectly but I can't get the original file name. The return I have is pfx16311440985252189274sfx it looks like they are characters to be decoded

Answer 1

I've been through this a few days ago.
Unfortunately using Resteasy annotation, there is no way to get the filename directly. You have to parse the filename from request header 'Content-disposition', something like you can find here : #MultipartForm How to get the original file name?
However something's not mentionned: you can use 'quarkus-resteasy-reactive' implementation as explained here : https://quarkus.io/guides/resteasy-reactive
You'll find a nice FileUpload class that can give you what you want.
WARNING though: changing JAX-RS implementation to reactive might impact your entire app so I advise you to read quarkus documentation if you do that :)