Ftp工具类
package com.fastech.test;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.SocketException;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FtpTool {
Logger logger=LoggerFactory.getLogger(this.getClass());
public static FTPClient ftp = null;
/**
* Description:登录FTP
* @author mnn
* @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
* */
public static boolean login(String url, int port, String username, String password) {
boolean success = false;
ftp = new FTPClient();
int reply;
try {
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)) {
System.err.println("FTP server refused connection.");
} else {
System.out.println("login success!");
}
System.out.println("FTP login is successful");
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("FTP login is :"+success);
return success;
}
/**
* Description: 从FTP服务器下载文件
* @author mnn
* @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 remotePath,String fileName,String localPath) {
boolean success = false;
try {
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();
}
}
success = true;
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("downFile is:"+success);
return success;
}
/**
* Description: 向FTP服务器上传文件
* @author mnn
* @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 path, String filename, InputStream input) {
boolean success = false;
try {
ftp.changeWorkingDirectory(path);
ftp.setBufferSize(1024);
ftp.setControlEncoding("GBK");
//设置文件类型(二进制)
ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
ftp.storeFile(filename, input);//上传文件
input.close();
success = true;
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("uploadFile is:"+success);
return success;
}
/**
* Description: 删除ftp上的文件
* @author mnn
* @param srcFname 要删除的文件路径
* */
public boolean removeFile(String srcFname) {
boolean flag = false;
if (ftp != null) {
try {
//ftp.cwd("synEnumTransInfoFile");
//ftp.changeWorkingDirectory(url);
flag = ftp.deleteFile(srcFname);
System.out.println("delete success!");
} catch (IOException e) {
e.printStackTrace();
}
}
return flag;
}
/**
* Description 关闭连接
* @author mnn
* */
public void closeCon() {
if (ftp != null) {
try {
ftp.logout();
if (ftp.isConnected()) {
ftp.disconnect();
logger.info("ftp logout"+ftp.isConnected());
ftp = null;
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}