JAVA使用JSCH实现文件上传到linux服务器

1 导入jar包

jsch-0.1.54.jar
jar包下载地址：
https://sourceforge.net/projects/jsch/files/jsch.jar/0.1.54/jsch-0.1.54.jar/download
如果是maven项目则导入以下依赖：

	<dependency>
		<groupId>com.jcraft</groupId>
		<artifactId>jsch</artifactId>
		<version>0.1.54</version>
	</dependency>

2 实现代码

package cn.cheng.sshlinux;

import java.io.IOException;
import java.util.Properties;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.ChannelShell;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;

public class JschOpenHandler {
	private static final int DEFAULT_PORT = 80;
	private static final int DEF_WAIT_SECONDS = 30;
	
	private static String username = "root";
	private static String host = "127.98.116.72";
	private static String password = "xxxxxxx";
	//源文件
	private static String sourcefile = "test.txt";
	//放在服务器的目标位置
	private static String dstfilepath = "/opt/test/";

	public static void main(String[] args) {
		Session session = openSession(host, username, password, DEF_WAIT_SECONDS);
		ChannelShell openChannelShell = openChannelShell(session);
		openChannelShell.setInputStream(System.in);
		openChannelShell.setOutputStream(System.out);
		ChannelSftp openChannelSftp = openChannelSftp(session);
		try {
			openChannelSftp.put(sourcefile, dstfilepath, ChannelSftp.OVERWRITE);
			//删除文件可用如下方法，进入某文件所在的目录后删除该文件
			//openChannelSftp.cd(dstfilepath);
			//openChannelSftp.rm(sourcefile);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 创建服务器连接
	 * 
	 * @param host
	 *            主机
	 * @param user
	 *            用户
	 * @param password
	 *            密码
	 * @param waitSeconds
	 *            等待秒数
	 * @return
	 */
	private static Session openSession(String host, String user, String password, int waitSeconds) {
		Session session = null;
		try {
			JSch jsch = new JSch();
			session = jsch.getSession(user, host, DEFAULT_PORT);
			noCheckHostKey(session);
			session.setPassword(password);
			// 这个设置很重要，必须要设置等待时长为大于等于2分钟
			session.connect(waitSeconds * 1000);
			if (!session.isConnected()) {
				throw new IOException("We can't connection to[" + host + "]");
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return session;
	}

	/**
	 * 不作检查主机键值
	 * 
	 * @param session
	 */
	private static void noCheckHostKey(Session session) {
		Properties config = new Properties();
		config.put("StrictHostKeyChecking", "no");
		session.setConfig(config);
	}

	/**
	 * 连接shell
	 * 
	 * @param session
	 *            session
	 * @return {@link ChannelShell}
	 */
	private static ChannelShell openChannelShell(Session session) {
		ChannelShell channel = null;
		try {
			channel = (ChannelShell) session.openChannel("shell");
			channel.setEnv("LANG", "en_US.UTF-8");
			channel.setAgentForwarding(false);
			channel.setPtySize(500, 500, 1000, 1000);
			channel.connect();
		} catch (Exception e) {
			e.printStackTrace();
		}
		if (channel == null) {
			throw new IllegalArgumentException("The channle init was wrong");
		}
		return channel;
	}

	/**
	 * 连接sftp
	 * 
	 * @param session
	 * @return {@link ChannelSftp}
	 */
	private static ChannelSftp openChannelSftp(Session session) {
		ChannelSftp channel = null;
		try {
			channel = (ChannelSftp) session.openChannel("sftp");
			channel.connect();
		} catch (Exception e) {
			e.printStackTrace();
		}
		return channel;
	}
}