com.centit.support.network.FtpExecutor Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of centit-utils Show documentation
java 常用工具类,作为 apache-commons的补充
There is a newer version: 5.3.2302
package com.centit.support.network;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Proxy;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
@SuppressWarnings("unused")
public abstract class FtpExecutor {
	
	protected static final Logger logger = LoggerFactory.getLogger(FtpExecutor.class);
	/**
	 * 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) {
		return uploadFile( url, port, username, null,				
				 password,  path,  filename,  input);
	}
	
	public static boolean uploadFile(String url,int port,String username, 
			Proxy proxy,
			String password, String path, String filename, InputStream input) {		
		boolean success = false;
		FTPClient ftp = new FTPClient();
		try {
			int reply;
			if(proxy!=null)
	        	ftp.setProxy(proxy);
			ftp.connect(url, port);//连接FTP服务器
			//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);	
			ftp.logout();
			success = true;
		} catch (IOException e) {
			logger.error(e.getMessage(),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 是否成功
	*/ 
	public static boolean downloadFile(String url, int port,String username, String password, 
			String remotePath,String fileName,String localPath) { 
		return downloadFile( url,  port, username,  password, null,
			 remotePath, fileName, localPath);
	}
	public static boolean downloadFile(String url, int port,String username, String password, 
			Proxy proxy,
			String remotePath,String fileName,String localPath) { 
	    boolean success = false; 
	    FTPClient ftp = new FTPClient(); 
	    try { 
	        int reply; 
	        if(proxy!=null)
	        	ftp.setProxy(proxy);
	        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());	                 
	                try(OutputStream is = new FileOutputStream(localFile)){  
	                	ftp.retrieveFile(ff.getName(), is); 
	                }
	                //is.close(); 
	            } 
	        } 
	         
	        ftp.logout(); 
	        success = true; 
	    } catch (IOException e) { 
	        logger.error(e.getMessage(),e);//e.printStackTrace(); 
	    } finally { 
	        if (ftp.isConnected()) { 
	            try { 
	                ftp.disconnect(); 
	            } catch (IOException ioe) { 
	            } 
	        } 
	    } 
	    return success; 
	}
}