本篇文章主要介紹了java實作sftp用戶端上傳檔案以及檔案夾的功能代碼，具有一定的參考價值，有興趣的可以了解一下。
1.依賴的jar檔案 jsch-0.1.53.jar
2.登入方式有密碼登入,和密匙登入
代碼:
主函數:
import java.util.Properties;
import com.cloudpower.util.Login;
import com.util.LoadProperties;
public class Ftp {
public static void main(String[] args) {
Properties properties = LoadProperties.getProperties();
Login.login(properties);
}
}
登陸頁面的代碼:
package com.cloudpower.util;
import java.io.Console;
import java.util.Properties;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.Session;
public class Login {
public static void login(Properties properties) {
String ip = properties.getProperty("ip");
String user = properties.getProperty("user");
String pwd = properties.getProperty("pwd");
String port = properties.getProperty("port");
String privateKeyPath = properties.getProperty("privateKeyPath");
String passphrase = properties.getProperty("passphrase");
String sourcePath = properties.getProperty("sourcePath");
String destinationPath = properties.getProperty("destinationPath");
if (ip != null && !ip.equals("") && user != null && !user.equals("")
&& port != null && !port.equals("") && sourcePath != null
&& !sourcePath.equals("") && destinationPath != null
&& !destinationPath.equals("")) {
if (privateKeyPath != null && !privateKeyPath.equals("")) {
sshSftp2(ip, user, Integer.parseInt(port), privateKeyPath,
passphrase, sourcePath, destinationPath);
} else if (pwd != null && !pwd.equals("")) {
sshSftp(ip, user, pwd, Integer.parseInt(port), sourcePath,
destinationPath);
} else {
Console console = System.console();
System.out.print("Enter password:");
char[] readPassword = console.readPassword();
sshSftp(ip, user, new String(readPassword),
Integer.parseInt(port), sourcePath, destinationPath);
}
} else {
System.out.println("請先設定配置檔案");
}
}
public static void sshSftp(String ip, String user, String psw, int port,
String sPath, String dPath) {
System.out.println("password login");
Session session = null;
JSch jsch = new JSch();
try {
if (port <= 0) {
// 連接配接伺服器，采用預設端口
session = jsch.getSession(user, ip);
} else {
// 采用指定的端口連接配接伺服器
session = jsch.getSession(user, ip, port);
}
// 如果伺服器連接配接不上，則抛出異常
if (session == null) {
throw new Exception("session is null");
}
// 設定登陸主機的密碼
session.setPassword(psw);// 設定密碼
// 設定第一次登陸的時候提示，可選值：(ask | yes | no)
session.setConfig("StrictHostKeyChecking", "no");
// 設定登陸逾時時間
session.connect(300000);
UpLoadFile.upLoadFile(session, sPath, dPath);
} catch (Exception e) {
e.printStackTrace();
}
System.out.println("success");
}
public static void sshSftp2(String ip, String user, int port,
String privateKey, String passphrase, String sPath, String dPath) {
System.out.println("privateKey login");
Session session = null;
JSch jsch = new JSch();
try {
// 設定密鑰和密碼
// 支援密鑰的方式登陸，隻需在jsch.getSession之前設定一下密鑰的相關資訊就可以了
if (privateKey != null && !"".equals(privateKey)) {
if (passphrase != null && "".equals(passphrase)) {
// 設定帶密碼的密鑰
jsch.addIdentity(privateKey, passphrase);
} else {
// 設定不帶密碼的密鑰
jsch.addIdentity(privateKey);
}
}
if (port <= 0) {
// 連接配接伺服器，采用預設端口
session = jsch.getSession(user, ip);
} else {
// 采用指定的端口連接配接伺服器
session = jsch.getSession(user, ip, port);
}
// 如果伺服器連接配接不上，則抛出異常
if (session == null) {
throw new Exception("session is null");
}
// 設定第一次登陸的時候提示，可選值：(ask | yes | no)
session.setConfig("StrictHostKeyChecking", "no");
// 設定登陸逾時時間
session.connect(300000);
UpLoadFile.upLoadFile(session, sPath, dPath);
System.out.println("success");
} catch (Exception e) {
e.printStackTrace();
}
}
}
檔案上傳的代碼:
package com.cloudpower.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Scanner;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpException;
public class UpLoadFile {
public static void upLoadFile(Session session, String sPath, String dPath) {
Channel channel = null;
try {
channel = (Channel) session.openChannel("sftp");
channel.connect(10000000);
ChannelSftp sftp = (ChannelSftp) channel;
try {
sftp.cd(dPath);
Scanner scanner = new Scanner(System.in);
System.out.println(dPath + ":此目錄已存在,檔案可能會被覆寫!是否繼續y/n?");
String next = scanner.next();
if (!next.toLowerCase().equals("y")) {
return;
}
} catch (SftpException e) {
sftp.mkdir(dPath);
sftp.cd(dPath);
}
File file = new File(sPath);
copyFile(sftp, file, sftp.pwd());
} catch (Exception e) {
e.printStackTrace();
} finally {
session.disconnect();
channel.disconnect();
}
}
public static void copyFile(ChannelSftp sftp, File file, String pwd) {
if (file.isDirectory()) {
File[] list = file.listFiles();
try {
try {
String fileName = file.getName();
sftp.cd(pwd);
System.out.println("正在建立目錄:" + sftp.pwd() + "/" + fileName);
sftp.mkdir(fileName);
System.out.println("目錄建立成功:" + sftp.pwd() + "/" + fileName);
} catch (Exception e) {
// TODO: handle exception
}
pwd = pwd + "/" + file.getName();
try {
sftp.cd(file.getName());
} catch (SftpException e) {
// TODO: handle exception
e.printStackTrace();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for (int i = 0; i < list.length; i++) {
copyFile(sftp, list[i], pwd);
}
} else {
try {
sftp.cd(pwd);
} catch (SftpException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println("正在複制檔案:" + file.getAbsolutePath());
InputStream instream = null;
OutputStream outstream = null;
try {
outstream = sftp.put(file.getName());
instream = new FileInputStream(file);
byte b[] = new byte[1024];
int n;
try {
while ((n = instream.read(b)) != -1) {
outstream.write(b, 0, n);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (SftpException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
try {
outstream.flush();
outstream.close();
instream.close();
} catch (Exception e2) {
// TODO: handle exception
e2.printStackTrace();
}
}
}
}
}
讀取配置檔案的代碼:
package com.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
public class LoadProperties {
public static Properties getProperties() {
File file = new File(Class.class.getClass().getResource("/").getPath()
+ "properties.properties");
InputStream inputStream = null;
try {
inputStream = new FileInputStream(file);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Properties properties = new Properties();
try {
properties.load(inputStream);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return properties;
}
}
代碼目錄結構:
測試運作時配置檔案放在項目的bin目錄下(打包成可運作jar檔案的時候要删除,打包完成後将配置檔案和jar包放在同級目錄下即可):
properties.properties
ip=
user=
pwd=
port=22
privateKeyPath=
passphrase=
sourcePath=
destinationPath=/home/dbbs/f
打包可運作jar檔案:
Export->java->Runnabe JAR file
完成後
在控制台運作java -jar 導出jar包的名字.jar 即可
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