我正在尝试在我的机器上本地与Bitvise（SFTP服务器）建立SFTP连接。我很难做到这一点。我想建立一个连接和下载上传文件。到目前为止这是我的代码。它会短暂连接然后断开连接。说无效的RSA模数。我想使用JSCH连接到SFTP服务器。除了我可以使用的Bitvise之外还有其他服务器吗？我究竟做错了什么？任何帮助表示赞赏。
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.security.KeyFactory;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.HostKey;
import com.jcraft.jsch.HostKeyRepository;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
/**
* @author kodehelp
*
*/
public class SFTPinJava {
/**
*
*/
public SFTPinJava() {
super();
}
/**
* @param args
*/
public static void main(String[] args) {
String SFTPHOST = "localhost";
int SFTPPORT = 24;
String SFTPUSER = "SftpUser";
String SFTPPASS = "152207";
String SFTPWORKINGDIR = "C:/SftpRoot";
Session session = null;
Channel channel = null;
ChannelSftp channelSftp = null;
try {
JSch jsch = new JSch();
session = jsch.getSession(SFTPUSER, SFTPHOST, SFTPPORT);
session.setPassword(SFTPPASS);
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
config.put("PreferredAuthentications", "password");
session.setConfig(config);
session.connect();
channel = session.openChannel("ftp");
channel.connect();
channelSftp = (ChannelSftp) channel;
channelSftp.cd(SFTPWORKINGDIR);
byte[] buffer = new byte[1024];
BufferedInputStream bis = new BufferedInputStream(channelSftp.get("Book1.xls"));
File newFile = new File("C:/Book1.xls");
OutputStream os = new FileOutputStream(newFile);
BufferedOutputStream bos = new BufferedOutputStream(os);
int readCount;
while ((readCount = bis.read(buffer)) > 0) {
System.out.println("Writing: ");
bos.write(buffer, 0, readCount);
}
bis.close();
bos.close();
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
我收到错误：
INFO: Connecting to localhost port 24
INFO: Connection established
INFO: Remote version string: SSH-2.0-7.35 FlowSsh: Bitvise SSH Server (WinSSHD) 7.35
INFO: Local version string: SSH-2.0-JSCH-0.1.54
INFO: CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
INFO: aes256-ctr is not available.
INFO: aes192-ctr is not available.
INFO: aes256-cbc is not available.
INFO: aes192-cbc is not available.
INFO: CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521
INFO: diffie-hellman-group14-sha1 is not available.
INFO: ecdh-sha2-nistp256 is not available.
INFO: ecdh-sha2-nistp384 is not available.
INFO: ecdh-sha2-nistp521 is not available.
INFO: CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
INFO: ecdsa-sha2-nistp256 is not available.
INFO: ecdsa-sha2-nistp384 is not available.
INFO: ecdsa-sha2-nistp521 is not available.
INFO: SSH_MSG_KEXINIT sent
INFO: SSH_MSG_KEXINIT received
INFO: kex: server: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-1.3.132.0.10,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group16-sha512,diffie-hellman-group15-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1,ext-info-s
INFO: kex: server: rsa-sha2-512,rsa-sha2-256,ssh-rsa,ecdsa-sha2-nistp384
INFO: kex: server: aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr,3des-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-cbc
INFO: kex: server: aes256-gcm@openssh.com,aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr,3des-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-cbc
INFO: kex: server: hmac-sha2-256,hmac-sha1
INFO: kex: server: hmac-sha2-256,hmac-sha1
INFO: kex: server: zlib,none
INFO: kex: server: zlib,none
INFO: kex: server:
INFO: kex: server:
INFO: kex: client: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
INFO: kex: client: ssh-rsa,ssh-dss
INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
INFO: kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
INFO: kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
INFO: kex: client: none
INFO: kex: client: none
INFO: kex: client:
INFO: kex: client:
INFO: kex: server->client aes128-ctr hmac-sha1 none
INFO: kex: client->server aes128-ctr hmac-sha1 none
INFO: SSH_MSG_KEX_DH_GEX_REQUEST(1024<1024<1024) sent
INFO: expecting SSH_MSG_KEX_DH_GEX_GROUP
INFO: SSH_MSG_KEX_DH_GEX_INIT sent
INFO: expecting SSH_MSG_KEX_DH_GEX_REPLY
INFO: Disconnecting from localhost port 24
com.jcraft.jsch.JSchException: Session.connect: java.security.spec.InvalidKeySpecException: Unknown key spec: Invalid RSA modulus size.
at com.jcraft.jsch.Session.connect(Session.java:565)
at com.jcraft.jsch.Session.connect(Session.java:183)
at SFTPinJava.main(SFTPinJava.java:57)