Created
April 28, 2019 03:55
-
-
Save logicjwell/57ee68e4a228a46eafdd326c8717fe61 to your computer and use it in GitHub Desktop.
[FTP工具类] 使用apache common-net 实现的ftp工具类 #ftp
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
public class FtpUtils { | |
private FtpUtils(){} | |
/** | |
* Description: 向FTP服务器上传文件 | |
* @param host FTP服务器hostname | |
* @param port FTP服务器端口 | |
* @param username FTP登录账号 | |
* @param password FTP登录密码 | |
* @param basePath FTP服务器基础目录 | |
* @param filePath FTP服务器文件存放路径。例如分日期存放:/2017/04/03。文件的路径为basePath+filePath | |
* @param filename 上传到FTP服务器上的文件名 | |
* @param input 输入流 | |
* @return 成功返回true,否则返回false | |
*/ | |
public static boolean uploadFile(String host, int port, String username, String password, String basePath, | |
String filePath, String filename, InputStream input) { | |
boolean result = false; | |
FTPClient ftp = new FTPClient(); | |
try { | |
int reply; | |
ftp.connect(host, port);// 连接FTP服务器 | |
// 如果采用默认端口,可以使用ftp.connect(host)的方式直接连接FTP服务器 | |
ftp.login(username, password);// 登录 | |
reply = ftp.getReplyCode(); | |
if (!FTPReply.isPositiveCompletion(reply)) { | |
ftp.disconnect(); | |
return result; | |
} | |
//切换到上传目录 | |
if (!ftp.changeWorkingDirectory(basePath+filePath)) { | |
//如果目录不存在创建目录 | |
String[] dirs = filePath.split("/"); | |
String tempPath = basePath; | |
for (String dir : dirs) { | |
if (null == dir || "".equals(dir)) continue; | |
tempPath += "/" + dir; | |
if (!ftp.changeWorkingDirectory(tempPath)) { | |
if (!ftp.makeDirectory(tempPath)) { | |
return result; | |
} else { | |
ftp.changeWorkingDirectory(tempPath); | |
} | |
} | |
} | |
} | |
//设置上传文件的类型为二进制类型 | |
ftp.setFileType(FTP.BINARY_FILE_TYPE); | |
//上传文件 | |
if (!ftp.storeFile(filename, input)) { | |
return result; | |
} | |
input.close(); | |
ftp.logout(); | |
result = true; | |
} catch (IOException e) { | |
e.printStackTrace(); | |
} finally { | |
if (ftp.isConnected()) { | |
try { | |
ftp.disconnect(); | |
} catch (IOException ioe) { | |
} | |
} | |
} | |
return result; | |
} | |
/** | |
* Description: 从FTP服务器下载文件 | |
* @param host FTP服务器hostname | |
* @param port FTP服务器端口 | |
* @param username FTP登录账号 | |
* @param password FTP登录密码 | |
* @param remotePath FTP服务器上的相对路径 | |
* @param fileName 要下载的文件名 | |
* @param localPath 下载后保存到本地的路径 | |
* @return | |
*/ | |
public static boolean downloadFile(String host, int port, String username, String password, String remotePath, | |
String fileName, String localPath) { | |
boolean result = false; | |
FTPClient ftp = new FTPClient(); | |
try { | |
int reply; | |
ftp.connect(host, port); | |
// 如果采用默认端口,可以使用ftp.connect(host)的方式直接连接FTP服务器 | |
ftp.login(username, password);// 登录 | |
reply = ftp.getReplyCode(); | |
if (!FTPReply.isPositiveCompletion(reply)) { | |
ftp.disconnect(); | |
return result; | |
} | |
ftp.changeWorkingDirectory(remotePath);// 转移到FTP服务器目录 | |
FTPFile[] fs = ftp.listFiles(); | |
for (FTPFile ff : fs) { | |
if (ff.getName().equals(fileName)) { | |
File localFile = new File(localPath + "/" + ff.getName()); | |
OutputStream is = new FileOutputStream(localFile); | |
ftp.retrieveFile(ff.getName(), is); | |
is.close(); | |
} | |
} | |
ftp.logout(); | |
result = true; | |
} catch (IOException e) { | |
e.printStackTrace(); | |
} finally { | |
if (ftp.isConnected()) { | |
try { | |
ftp.disconnect(); | |
} catch (IOException ioe) { | |
} | |
} | |
} | |
return result; | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment