利用 sftp 上传文件到linux

使用 maven导入 jar包

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

创建对应的 Config信息映射

package com.lab.common.config;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
@ConfigurationProperties(prefix = "linux")
public class LinuxConfig {

    private static String host;
    private static int port;

    private static String username;

    private static String password;

    private static String backupPath;

    private static String upgradingPath;

    public static String getHost() {
        return host;
    }

    public void setHost(String host) {
        LinuxConfig.host = host;
    }

    public static int getPort() {
        return port;
    }

    public void setPort(int port) {
        LinuxConfig.port = port;
    }

    public static String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        LinuxConfig.username = username;
    }

    public static String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        LinuxConfig.password = password;
    }

    public static String getBackupPath() {
        return backupPath;
    }

    public void setBackupPath(String backupPath) {
        LinuxConfig.backupPath = backupPath;
    }

    public static String getUpgradingPath() {
        return upgradingPath;
    }

    public void setUpgradingPath(String upgradingPath) {
        LinuxConfig.upgradingPath = upgradingPath;
    }
}

在对应的 yml文件中添加

linux:
    host: 192.168.1.101
    port: 22
    username: test
    password: password
    backupPath: /home/test/test
    upgradingPath: /home/test/test1

创建实体Utils 类

package com.lab.common.utils.sftp;

import com.jcraft.jsch.*;

import java.io.*;
import java.util.List;
import java.util.Properties;

public class SFTPUtil {

    /**
     * 向Linux服务器通过SFTP上传文件
     *
     * @param host        服务器IP地址
     * @param port        SFTP服务端口（通常是22）
     * @param username    登录用户名
     * @param password    登录密码
     * @param pathList  服务器上的目标路径（包括文件名）
     * @param localFile   本地待上传文件的绝对路径
     * @throws Exception  如果上传过程中发生错误
     */
    public static void uploadFileToServer(String host, int port, String username, String password,
                                          List<String> pathList, String localFile) throws Exception {
        JSch jsch = new JSch();
        Session session = null;
        ChannelSftp channelSftp = null;
        try {
            // 创建Session并设置认证信息
            session = jsch.getSession(username, host, port);
            session.setPassword(password);
            // 设置SSH连接配置，如跳过主机密钥检查
            Properties config = new Properties();
            config.put("StrictHostKeyChecking", "no");
            session.setConfig(config);
            // 建立连接
            session.connect();
            // 打开SFTP通道
            Channel channel = session.openChannel("sftp");
            channel.connect();
            channelSftp = (ChannelSftp) channel;

            for (String path: pathList) {
                sftpSyncFile(localFile, path, channelSftp);
            }
            System.out.println("File uploaded successfully");

        } catch (Exception e) {
            throw e;

        } finally {
            if (channelSftp != null) {
                channelSftp.disconnect();
            }
            if (session != null) {
                session.disconnect();
            }
        }
    }

    /**
     * 判断目录是否存在
     * @param directory
     * @return
     */
    public static boolean isDirExist(String directory, ChannelSftp sftp)
    {
        boolean isDirExistFlag = false;
        try
        {
            SftpATTRS sftpATTRS = sftp.lstat(directory);
            isDirExistFlag = true;
            return sftpATTRS.isDir();
        }
        catch (Exception e)
        {
            if (e.getMessage().toLowerCase().equals("no such file"))
            {
                isDirExistFlag = false;
            }
        }
        return isDirExistFlag;
    }

    public static void createMkdir(String directory, ChannelSftp sftp) throws SftpException {
        String[] path = directory.split("/");
        String sd = "";
        for (int i = 1; i < path.length; i++) {
            sd += "/"+path[i];
            if(isDirExist(sd, sftp)){
                sftp.cd(sd);
            } else {
                sftp.mkdir(sd);
                sftp.cd(sd);
            }
        }
    }

    public static void sftpSyncFile(String localFile, String path, ChannelSftp channelSftp) throws SftpException, IOException {
        // 读取本地文件作为输入流
        File localFileObj = new File(localFile);
        FileInputStream fileInputStream = new FileInputStream(localFileObj);
        String cdPath = path.substring(0, path.lastIndexOf('/'));
        if (isDirExist(cdPath,channelSftp)) {
            // 上传文件到服务器指定路径
            channelSftp.cd(cdPath); // 切换到目标目录
        } else {
            createMkdir(cdPath, channelSftp);
            // 进入并设置为当前目录
            channelSftp.cd(cdPath); // 切换到目标目录
        }
        channelSftp.put(fileInputStream, path.substring(path.lastIndexOf('/') + 1)); // 上传文件
        fileInputStream.close();
    }
}