camel-ftp: destination filename encoding error - character-encoding

Question

developing on windows 10. Using Win10 IIS FTP server. create a camel context to transfer ftp files. Problem comes out on Chinese Files transfer. The Chinese file in destination path garbled.
I try to add charset(ios-8859-1, utf-8, gb2312 ...) param in both from() & to() URI, not works.
public void configure() throws Exception {
try {
from("ftp://127.0.0.1:2121?binary=true&charset=windows-1252&delay=5s&delete=true&passiveMode=true&recursive=true")
.to("file://E:/ftp_copy/local?charset=utf-8")
.log("Downloaded file ${file:name} complete.");
} catch (Exception e) {
throw e;
}
}
some log:
15:21:08.321 [Camel (camel-1) thread #1 - ftp://127.0.0.1:2121] DEBUG o.a.c.c.f.FileOperations - [writeFileByReaderWithCharset,462] - Using Reader to write file: E:\ftp_copy\local\ÖÐÎÄ°¦°¦.txt with charset: utf-8
15:21:08.322 [Camel (camel-1) thread #1 - ftp://127.0.0.1:2121] DEBUG o.a.c.c.f.GenericFileProducer - [writeFile,282] - Wrote [E:\ftp_copy\local\ÖÐÎÄ°¦°¦.txt] to [file://E:%5Cftp_copy%5Clocal?charset=utf-8]
15:21:08.324 [Camel (camel-1) thread #1 - ftp://127.0.0.1:2121] INFO route1 - [log,159] - Downloaded file ÖÐÎÄ°¦°¦.txt complete.
15:21:08.325 [Camel (camel-1) thread #1 - ftp://127.0.0.1:2121] DEBUG o.a.c.c.f.GenericFileOnCompletion - [onCompletion,75] - Done processing file: RemoteFile[ÖÐÎÄ°¦°¦.txt] using exchange: Exchange[ID-LAPTOP-7L49H3A5-1548141666835-0-1]
15:21:08.325 [Camel (camel-1) thread #1 - ftp://127.0.0.1:2121] DEBUG o.a.c.c.f.r.FtpOperations - [deleteFile,232] - Deleting file: ÖÐÎÄ°¦°¦.txt