使用hutool进行ftp文件下载和上传
•
Jave
1 引入依赖
cn.hutool
hutool-all
5.8.15
commons-net
commons-net
3.6
2 工具类
package ftp;
import cn.hutool.core.io.FileUtil;
import cn.hutool.extra.ftp.Ftp;
import cn.hutool.extra.ftp.FtpMode;
import org.apache.commons.lang.StringUtils;
import java.io.File;
import java.io.IOException;
/**
* @author :
* @description :
* @date : 2023/3/10 14:42
*/
public class FtpUtil {
/**
* 下载ftp服务器上的文件到本地
* @param remoteFile
* @param localFile
* @param ip
* @param port
* @param username
* @param password
* @param ftpMode
* @return 成功则返回字符串:success
*/
public static String download(String remoteFile, String localFile, String ip, Integer port, String username, String password, FtpMode ftpMode) {
if(StringUtils.isBlank(localFile)) {
return "本地保存路径及名称不能为空";
}
File lFile = FileUtil.file(localFile);
Ftp ftp = null;
try {
//匿名登录(无需帐号密码的FTP服务器)
ftp = new Ftp(ip,port == null ? 21 : port,username,password);
if(ftpMode != null) {
ftp.setMode(ftpMode);
}
ftp.download(remoteFile, lFile);
} catch (Exception e) {
return e.getMessage();
} finally {
//关闭连接
try {
if(ftp != null) ftp.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
if(lFile.exists() && lFile.length() > 0) {
return "success";
} else {
lFile.delete();
return "download failure,"+ remoteFile +" maybe not exists !!";
}
}
/**
* 此方法不指定上传后保存的名称, 则按本地文件的名称保存
* @param remoteDir
* @param localFile
* @param ip
* @param port
* @param username
* @param password
* @return 成功则返回字符串:success
*/
public static String upload(String remoteDir, String localFile, String ip, Integer port, String username, String password, FtpMode ftpMode) {
return upload(remoteDir, null, localFile, ip, port, username, password, ftpMode);
}
/**
*
* @param remoteDir 上传的ftp目录
* @param remoteFileName 保存到ftp服务器上的名称
* @param localFile 本地文件全名称
* @param ip
* @param port
* @param username
* @param password
* @return 成功则返回字符串:success
*/
public static String upload(String remoteDir, String remoteFileName, String localFile, String ip, Integer port, String username, String password, FtpMode ftpMode) {
if(StringUtils.isBlank(localFile)) {
return "本地文件名称不能为空";
}
File lFile = FileUtil.file(localFile);
if(!lFile.exists()) {
return "本地文件不存在";
}
Ftp ftp = null;
try {
//匿名登录(无需帐号密码的FTP服务器)
ftp = new Ftp(ip,port == null ? 21 : port,username,password);
if(ftpMode != null) {
ftp.setMode(ftpMode);
}
if(StringUtils.isBlank(remoteFileName)) {
ftp.upload(remoteDir, lFile);
} else {
ftp.upload(remoteDir, remoteFileName, lFile);
}
} catch (Exception e) {
return e.getMessage();
} finally {
//关闭连接
try {
if(ftp != null) ftp.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return "success";
}
}
3 测试
public class FtpTest {
public static void main(String[] args) {
//上传文件到ftp
String result = FtpUtil.upload("opt/upload","fff.zip", "D:/STM.zip", "192.168.68.55", 21, "ftpuser", "ftpuser!@#123", null);
System.out.println(result);
//下载远程文件
String result2 = FtpUtil.download("opt/upload/fff.zip", "D:/bbb.zip", "192.168.68.55", 21, "ftpuser", "ftpuser!@#123", null);
System.out.println(result2);
}
}
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