Java语言操作FTP服务进行文件的处理

最新推荐文章于 2023-11-25 23:30:11 发布

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最新推荐文章于 2023-11-25 23:30:11 发布

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本文链接：https://blog.youkuaiyun.com/qiushuichangtian888/article/details/38709587

本文介绍了一个用于FTP服务操作的接口FtpClient及其具体实现类FtpClientEDTImpl，包括连接、登录、文件上传下载等功能，并提供了一个下载文件的具体示例。

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1、接口：FtpClient.java

import com.enterprisedt.net.ftp.FTPFile;
import java.io.File;
import java.io.OutputStream;
import java.util.List;
import java.util.Map;

/**
 * 
 * 类<strong>FtpClient.java</strong>FTP服务接口
 * 
 * @author: wangyf
 * @version: 1.0 Date: 2011-9-1上午10:41:48
 */
public abstract interface FtpClient {
	
	public abstract void initFfpClient(String paramString, int paramInt) throws FtpException;
	
	public abstract void initFfpClientUTF8(String paramString, int paramInt) throws FtpException;

	public abstract void login(String paramString1, String paramString2) throws FtpException;

	public abstract void cd(String paramString) throws FtpException;

	public abstract void mkDir(String paramString) throws FtpException;

	public abstract FTPFile[] list(String paramString) throws FtpException;

	public abstract boolean uploadFiles(File[] paramArrayOfFile, String paramString) throws FtpException;

	public abstract boolean uploadFiles(List<File> paramList, String paramString) throws FtpException;

	public abstract boolean uploadFiles(Map<String, byte[]> paramMap, String paramString) throws FtpException;

	public abstract boolean uploadFiles2(Map<String, String> paramMap, String paramString) throws FtpException;

	public abstract void get(OutputStream paramOutputStream, String paramString) throws FtpException;

	public abstract byte[] get(String paramString) throws FtpException;

	public abstract void get(String paramString1, String paramString2) throws FtpException;

	public abstract boolean quit() throws FtpException;
	
	public void del(String fileName) throws FtpException;
}

2、实现类：FtpClientEDTImpl.java

import com.enterprisedt.net.ftp.FTPClient;
import com.enterprisedt.net.ftp.FTPConnectMode;
import com.enterprisedt.net.ftp.FTPException;
import com.enterprisedt.net.ftp.FTPFile;
import com.enterprisedt.net.ftp.FTPTransferType;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.log4j.Logger;

/**
 * 
 * 类<strong>FtpClient.java</strong>FTP服务实现
 * 
 * @author: wangyf
 * @version: 1.0 Date: 2011-9-1上午10:51:48
 */
public class FtpClientEDTImpl implements FtpClient {
	private static final Logger log = Logger.getLogger(FtpClientEDTImpl.class);

	private FTPClient client = null;

	public boolean quit() throws FtpException {
		if ((this.client != null) && (this.client.connected()))
			try {
				this.client.quit();
				return true;
			} catch (Exception e) {
				throw new FtpException(e);
			}

		return false;
	}

	public void initFfpClient(String host, int port) throws FtpException {
		this.client = new FTPClient();
		try {
			this.client.setRemoteHost(host);
			this.client.setRemotePort(port);
			this.client.setControlEncoding("GBK");
			this.client.setConnectMode(FTPConnectMode.ACTIVE);
			this.client.connect();
		} catch (Exception e) {
			throw new FtpException(e);
		}
	}
	
	public void initFfpClientUTF8(String host, int port) throws FtpException {
		this.client = new FTPClient();
		try {
			this.client.setRemoteHost(host);
			this.client.setRemotePort(port);
			this.client.setControlEncoding("UTF-8");
			this.client.setConnectMode(FTPConnectMode.ACTIVE);
			this.client.connect();
		} catch (Exception e) {
			throw new FtpException(e);
		}
	}

	public void login(String user, String pwd) throws FtpException {
		if ((this.client != null) && (this.client.connected()))
			try {
				this.client.login(user, pwd);
				this.client.setConnectMode(FTPConnectMode.PASV);
				this.client.setType(FTPTransferType.BINARY);
			} catch (Exception e) {
				throw new FtpException(e);
			}
	}

	public boolean uploadFiles(File[] files, String destDir) throws FtpException {
		if ((this.client != null) && (this.client.connected())) {
			for (File file : files)
				try {
					this.client.put(file.getPath(), destDir + "/" + file.getName());
				} catch (Exception e) {
					throw new FtpException(e);
				}

			return true;
		}
		return false;
	}

	public boolean uploadFiles(List<File> files, String destDir) throws FtpException {
		if ((this.client != null) && (this.client.connected())) {
			for (File file : files)
				try {
					this.client.put(file.getPath(), destDir + "/" + file.getName());
				} catch (Exception e) {
					throw new FtpException(e);
				}

			return true;
		}
		return false;
	}

	public boolean uploadFiles(Map<String, byte[]> files, String destDir) throws FtpException {
		if ((this.client != null) && (this.client.connected())) {
			Set<String> keys = files.keySet();
			for (String filename : keys) {
				byte[] bytes = (byte[])files.get(filename);
				try {
					this.client.put(bytes, destDir + "/" + filename, false);
				} catch (Exception e) {
					throw new FtpException(e);
				}
			}
			return true;
		}
		return false;
	}

	public boolean uploadFiles2(Map<String, String> files, String destDir) throws FtpException {
		if ((this.client != null) && (this.client.connected())) {
			Set<String> keys = files.keySet();
			for (String filename : keys) {
				String filepath = (String)files.get(filename);
				try {
					this.client.put(filepath, destDir + "/" + filename, false);
				} catch (Exception e) {
					throw new FtpException(e);
				}
			}
			return true;
		}
		return false;
	}

	public void mkDir(String destDir) throws FtpException {
		try {
			if (this.client.exists(destDir))
				return;
			this.client.mkdir(destDir);
		} catch (Exception e) {
			log.info("文件夹‘" + destDir + "’已存在！");
		}
	}

	public void cd(String rPath) throws FtpException {
		try {
			this.client.chdir(rPath);
		} catch (IOException e) {
			e.printStackTrace();
		} catch (FTPException e) {
			e.printStackTrace();
		}
	}

	public void get(OutputStream os, String remoteFile) throws FtpException {
		try {
			this.client.get(os, remoteFile);
		} catch (Exception e) {
			e.printStackTrace();
			throw new FtpException(e);
		}
	}

	public byte[] get(String remoteFile) throws FtpException {
		try {
			return this.client.get(remoteFile);
		} catch (Exception e) {
			e.printStackTrace();
			throw new FtpException(e);
		}
	}

	public void get(String localPath, String remoteFile) throws FtpException {
		try {
			this.client.get(localPath, remoteFile);
		} catch (Exception e) {
			e.printStackTrace();
			throw new FtpException(e);
		}
	}

	public FTPFile[] list(String path) throws FtpException {
		FTPFile[] files = new FTPFile[0];
		try {
			files = this.client.dirDetails(path);
		} catch (Exception e) {
			e.printStackTrace();
			throw new FtpException(e);
		}
		return files;
	}
	
	
	public void del(String fileName) throws FtpException {
		try {
			this.client.delete(fileName);
		} catch (Exception e) {
			e.printStackTrace();
			throw new FtpException(e);
		}
	}
}

3、异常处理类：

/**
 * 
 * 类<strong>FtpClient.java</strong>FTP异常类
 * 
 * @author: wangyf
 * @version: 1.0 Date: 2011-9-1上午10:58:48
 */
public class FtpException extends Exception {
	private static final long serialVersionUID = 1L;

	public FtpException(Exception e) {
		super(e);
	}
}

4、下载文件使用方法：

/**
	 * 通过FTP服务到银联WAP的对应FTP服务器上下载对账文件
	 * @param hostname--IP
	 * @param port--端口
	 * @param username--用户名
	 * @param password--密码
	 * @param remotePath--银联FTP服务器对账文件路径
	 * @param remoteFilename--银联对账文件名
	 * @param localFilename--放在本地的对账文件名
	 * @return--是否下载成功
	 */
	public boolean downloadFile(String hostname, int port, String username, String password, String remotePath,
			String remoteFilename, String localFilename) {
		byte[] bytes = null;
		FtpClient ftpClient = new FtpClientEDTImpl();
		try {
			ftpClient.initFfpClientUTF8(hostname.trim(), port);
			ftpClient.login(username.trim(), password.trim());
			bytes = ftpClient.get(remotePath + remoteFilename);
			bytes = ftpClient.get(remoteFilename);
			PaymentUtils.writeToFile(localFilename, bytes);
			log.info("通过ftp协议获取银联WAP对账文件成功!");
			return true;
		} catch (FtpException e) {
			log.error("通过ftp协议获取银联WAP对账文件出错：", e);
		} catch (Exception e) {
			log.error("通过ftp协议获取银联WAP对账文件出错：", e);
		} finally {
			try {
				if (null != ftpClient) {
					ftpClient.quit();
				}
			} catch (FtpException e) {
				log.error("ftp客户端退出时出错：", e);
			}
		}
		return false;
	}

5、测试：

public static void main(String[] args) {
		UnionPayWapChckActFileRetrieve actFileRetrieve = new UnionPayWapChckActFileRetrieve();
		boolean isDownload;
		isDownload=actFileRetrieve.downloadFile("210.51.51.185", 21, "userName", "pswd", "", "630056832596_20140810.txt",
				"E:\\630056832596_20140810.txt");
		if(isDownload==true){
			System.out.println("下载对账文件成功............");
		}else{
			System.out.println("下载对账文件失败............");
		}
	}