Java 使用 jsch 上传远程服务器

添加依赖

新版本依赖

<dependency>
    <groupId>com.github.mwiede</groupId>
    <artifactId>jsch</artifactId>
    <version>2.27.2</version>
</dependency>

老版本依赖

<dependency>
    <groupId>com.jcraft</groupId>
    <artifactId>jsch</artifactId>
    <version>0.1.55</version>
</dependency>

相关代码

说明：虽然新版本依赖名称都换掉了，但是代码包依然是com.jcraft.jsch。

import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import java.io.OutputStream;

@Component
public class JschUtils {

    @Value("${jsch.host}")
    private String host;

    @Value("${jsch.username}")
    private String username;

    @Value("${jsch.password}")
    private String password;

    @Value("${jsch.path}")
    private String path;

    public void upload(byte[] bytes, String filename) throws Exception {
        JSch jsch = new JSch();
        Session session = jsch.getSession(username, host);
        if (session == null) {
            throw new RuntimeException("无法连接远程服务器");
        }
        session.setPassword(password);
        session.setConfig("userauth.gssapi-with-mic", "no");
        session.setConfig("StrictHostKeyChecking", "no");
        session.connect(30000);

        Channel channel = session.openChannel("sftp");
        channel.connect(1000);
        ChannelSftp sftp = (ChannelSftp) channel;
        sftp.cd(path);
        try (OutputStream outputStream = sftp.put(filename)) {
            outputStream.write(bytes);
        } finally {
            session.disconnect();
            channel.disconnect();
        }
    }

    public void delete(String filename) throws Exception {
        JSch jsch = new JSch();
        Session session = jsch.getSession(username, host);
        if (session == null) {
            throw new RuntimeException("无法连接远程服务器");
        }
        session.setPassword(password);
        session.setConfig("userauth.gssapi-with-mic", "no");
        session.setConfig("StrictHostKeyChecking", "no");
        session.connect(30000);

        Channel channel = session.openChannel("sftp");
        channel.connect(1000);
        ChannelSftp sftp = (ChannelSftp) channel;
        sftp.cd(path);
        try {
            sftp.rm(filename);
        } finally {
            session.disconnect();
            channel.disconnect();
        }
    }

}

开源地址

https://github.com/mwiede/jsch

代码示例

https://github.com/mwiede/jsch/blob/master/examples/Sftp.java