ftp工具类
package com.ttg.utils.common;
//~--- non-JDK imports --------------------------------------------------------
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPClientConfig;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
import java.io.*;
//~--- JDK imports ------------------------------------------------------------
//~--- classes ----------------------------------------------------------------
/**
*
*/
public class FtpClientUtil {
/**
* Field ftp Description
*/
private static FTPClient ftp;
/**
*
* @param path
* 上传到ftp服务器哪个路径下
* @param addr
* 地址
* @param port
* 端口号
* @param username
* 用户名
* @param password
* 密码
* @return
* @throws Exception
*/
public static boolean connect(String path, String addr, int port, String username, String password) throws Exception {
boolean result = false;
ftp = new FTPClient();
int reply;
ftp.connect(addr, port);
ftp.login(username, password);
ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
reply = ftp.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftp.disconnect();
return result;
}
ftp.changeWorkingDirectory(path);
result = true;
return result;
}
/**
*
* @param file
* 上传的文件或文件夹
* @throws Exception
*/
public static void upload(File file) throws Exception {
if (file.isDirectory()) {
ftp.makeDirectory(file.getName());
ftp.changeWorkingDirectory(file.getName());
String[] files = file.list();
for (int i = 0; i < files.length; i++) {
File file1 = new File(file.getPath() + "\\" + files[i]);
if (file1.isDirectory()) {
upload(file1);
ftp.changeToParentDirectory();
} else {
File file2 = new File(file.getPath() + "\\" + files[i]);
FileInputStream input = new FileInputStream(file2);
ftp.storeFile(file2.getName(), input);
input.close();
}
}
} else {
File file2 = new File(file.getPath());
FileInputStream input = new FileInputStream(file2);
ftp.storeFile(file2.getName(), input);
input.close();
}
}
/**
* Description: 向FTP服务器上传文件
*
* @param url
* 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 path
* FTP服务器保存目录
* @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 url, int port, String username, String password, String path, String filename, InputStream input) {
boolean success = false;
ftp = new FTPClient();
FTPClientConfig config = new FTPClientConfig();
// config.setXXX(YYY); // change required options
// for example config.setServerTimeZoneId("Pacific/Pitcairn")
ftp.setDataTimeout(6000);
ftp.setConnectTimeout(6000);
ftp.configure(config);
try {
int reply;
ftp.connect(url, port); // 连接FTP服务器
// ftp.connect(url);
// 如果采用默认端口,可以使用ftp.connect(url)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 success;
}
ftp.changeWorkingDirectory(path);
ftp.storeFile(filename, input);
input.close();
ftp.logout();
success = true;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ftp.isConnected()) {
try {
ftp.disconnect();
} catch (IOException ioe) {
}
}
}
return success;
}
/**
* Description: 从FTP服务器下载文件
*
* @param url
* 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 downFile(String url, int port, String username, String password, String remotePath, String fileName, String localPath) {
boolean success = false;
FTPClient ftp = new FTPClient();
try {
int reply;
ftp.connect(url, port);
// 如果采用默认端口,可以使用ftp.connect(url)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 success;
}
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();
success = true;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ftp.isConnected()) {
try {
ftp.disconnect();
} catch (IOException ioe) {
}
}
}
return success;
}
}