ftp檔案上傳工具類

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

import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
import com.moonlight.sdk.consts.SystemConst;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * SFTP工具類
 */
public class SftpUtils {

    public static Logger log = LoggerFactory.getLogger(SftpUtils.class);
    static Session sshSession = null;

    /**
     * 擷取ChannelSftp
     */
    public static ChannelSftp getConnectIP(String host, String sOnlineSftpPort, String username, String password) {
        int port = 0;
        if (!("".equals(sOnlineSftpPort)) && null != sOnlineSftpPort) {
            port = Integer.parseInt(sOnlineSftpPort);
        }
        ChannelSftp sftp = null;
        try {
            JSch jsch = new JSch();
            jsch.getSession(username, host, port);
            sshSession = jsch.getSession(username, host, port);
            sshSession.setPassword(password);
            Properties sshConfig = new Properties();
            sshConfig.put("StrictHostKeyChecking", "no");
            sshSession.setConfig(sshConfig);
            sshSession.connect();
            Channel channel = sshSession.openChannel("sftp");
            channel.connect();
            sftp = (ChannelSftp) channel;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sftp;
    }

    /**
     * 上傳
     */
    public static void upload(String directory, String uploadFile, ChannelSftp sftp) {
        try {
            sftp.cd(directory);
            File file = new File(uploadFile);
            sftp.put(new FileInputStream(file), file.getName());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (sftp.isConnected()) {
                sshSession.disconnect();
                sftp.disconnect();
            }

        }
    }

    /**
     * 上傳
     */
    public static void upload(String directory, File file, ChannelSftp sftp) {
        try {
            sftp.cd(directory);
            sftp.put(new FileInputStream(file), file.getName());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (sftp.isConnected()) {
                sshSession.disconnect();
                sftp.disconnect();
            }

        }
    }

    /**
     * 下載下傳
     */
    public static void download(String directory, String downloadFile, String saveFile, ChannelSftp sftp) {
        try {
            sftp.cd(directory);
            File file = new File(saveFile);
            sftp.get(downloadFile, new FileOutputStream(file));
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (sftp.isConnected()) {
                sshSession.disconnect();
                sftp.disconnect();
            }

        }
    }

    /**
     * 檢視
     */
    public static List<String> check(String directory, ChannelSftp sftp) {
        List<String> fileList = new ArrayList<>();
        try {
            sftp.cd(directory);
            ListIterator a = sftp.ls(directory).listIterator();
            while (a.hasNext()) {
                fileList.add((String) a.next());
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (sftp.isConnected()) {
                sshSession.disconnect();
                sftp.disconnect();
            }

        }
        return fileList;
    }

    /**
     * 删除
     */
    public static void delete(String directory, String deleteFile, ChannelSftp sftp) {
        try {
            sftp.cd(directory);
            sftp.rm(deleteFile);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (sftp.isConnected()) {
                sshSession.disconnect();
                sftp.disconnect();
            }

        }
    }

    /***
     * 字元串寫入檔案
     * @param content
     * @param fileName
     * @return
     */
    public static File writeFile(String content, String fileName) {
        if (fileName == null) {
            return null;
        }
        File file = new File(fileName);
        FileOutputStream out=null;
        OutputStreamWriter osw=null;
        BufferedWriter bw=null;
        try {
            out = new FileOutputStream(file);
            osw = new OutputStreamWriter(out,"utf-8");
            bw =new BufferedWriter(osw);
            bw.append(content).append("\r\n");
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if(bw!=null){
                try {
                    bw.close();
                } catch (IOException e) {
                    log.error("", e);
                }
            }
            if(osw!=null){
                try {
                    osw.close();
                } catch (IOException e) {
                    log.error("", e);
                }
            }
            if(out!=null){
                try {
                    out.close();
                } catch (IOException e) {
                    log.error("", e);
                }
            }
        }
        return  file;
    }

    /***
     * 采用配置檔案裡面預設配置參數進行上傳
     * @param content
     * @param fileName
     */
    public static void upload(String content, String fileName) {
        File file = writeFile(content, fileName);
        ChannelSftp ftp = getConnectIP(SystemConst.SFTP_HOST, SystemConst.SFTP_PORT, SystemConst.SFTP_USER, SystemConst.SFTP_PWD);
        upload(SystemConst.SFTP_DIR, file, ftp);
    }

    public static void main(String[] args) {
        ChannelSftp ftp = getConnectIP("127.0.0.1", "22", "", "");
        check("", ftp);
    }


}