SpringBoot实战集成SFTP

在Spring Boot中集成SFTP，可以使用第三方库如JSch或者Apache Commons VFS。以下是使用JSch集成SFTP的一个基本示例：

1. 添加JSch依赖到pom.xml：

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

2. 创建SFTP服务类：

import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import org.springframework.stereotype.Service;
 
import java.util.Properties;
 
@Service
public class SftpService {
 
    public ChannelSftp sftpConnect(String host, int port, String user, String password) {
        JSch jsch = new JSch();
        Session session = null;
        Channel channel = null;
        ChannelSftp sftpChannel = null;
 
        try {
            // Setup JSch session.
            session = jsch.getSession(user, host, port);
            session.setConfig("StrictHostKeyChecking", "no");
            session.setPassword(password);
            Properties config = new Properties();
            config.put("Compression", "yes");
            session.setConfig(config);
 
            // Connect to SFTP server.
            session.connect();
 
            // Open SFTP channel.
            channel = session.openChannel("sftp");
            channel.connect();
 
            // Cast to SFTP channel.
            sftpChannel = (ChannelSftp) channel;
        } catch (Exception e) {
            e.printStackTrace();
        }
 
        return sftpChannel;
    }
}

3. 使用SFTP服务进行文件操作：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
 
import java.io.InputStream;
 
@Service
public class FileTransferService {
 
    @Autowired
    private SftpService sftpService;
 
    public void sendFile(String host, int port, String user, String password, String localFilePath, String remoteDir) {
        ChannelSftp sftpChannel = sftpService.sftpConnect(host, port, user, password);
 
        try {
            sftpChannel.cd(remoteDir);
            sftpChannel.put(localFilePath, "remoteFileName.txt");
        } catch (Exception e) {