FTPUtil工具类及使用

配置maven

工具类

package com.hk.utils;import org.apache.commons.net.ftp.FTP;import org.apache.commons.net.ftp.FTPClient;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;/** * User: hk * Date: 2017/8/10 下午4:31 * version: 1.0 */public class FTPUtil implements AutoCloseable {    private FTPClient ftpClient;    public FTPUtil(String serverIP, int port, String userName, String password) throws IOException {        ftpClient = new FTPClient();        ftpClient.connect(serverIP, port);        ftpClient.login(userName, password);        ftpClient.setBufferSize(1024);//设置上传缓存大小        ftpClient.setControlEncoding("UTF-8");//设置编码        ftpClient.setFileType(FTP.BINARY_FILE_TYPE);//设置文件类型    }    /**     * 下载ftp文件到本地     *     * @param remoteFileName 远程文件名称     * @param localFile      本地文件[包含路径]     * @return true/false     * @throws IOException 异常     */    public boolean downloadFile(String remoteFileName, String localFile) throws IOException {        boolean isSucc;        File outFileName = new File(localFile);        if (ftpClient == null)            throw new IOException("ftp server not login");        try (OutputStream outputStream = new FileOutputStream(outFileName)) {            isSucc = ftpClient.retrieveFile(remoteFileName, outputStream);        }        return isSucc;    }    /**     * 上传文件制定目录     *     * @param remoteFileName 远程文件名     * @param localFile      本地文件[必须带路径]     * @return true/false     * @throws IOException 异常     */    public boolean uploadFile(String remoteFileName, String localFile) throws IOException {        boolean isSucc;        try (InputStream inputStream = new FileInputStream(localFile)) {            if (ftpClient == null)                throw new IOException("ftp server not login");            isSucc = ftpClient.storeFile(remoteFileName, inputStream);        }        return isSucc;    }    /**     * 切换目录     *     * @param path 创建目录     * @return 创建标志     * @throws IOException 异常     */    public boolean changeDirectory(String path) throws IOException {        return ftpClient.changeWorkingDirectory(path);    }    /**     * 创建目录     *     * @param path 创建目录     * @return 创建标志     * @throws IOException 异常     */    public boolean createDirectory(String path) throws IOException {        return ftpClient.makeDirectory(path);    }    /**     * 自动关闭资源     */    @Override    public void close() throws Exception {        if (ftpClient != null && ftpClient.isConnected()) {            ftpClient.logout();            ftpClient.disconnect();        }    }}

使用方式

@Test    public void downloadFile() throws Exception {        try (FTPUtil ftpUtil = new FTPUtil("10.211.55.7",21,"ftpuser","123qwe")){            ftpUtil.downloadFile("2.txt","/Users/hk/Desktop/22.txt");        }catch (Exception e){            e.printStackTrace();        }    }    @Test    public void uploadFile() throws Exception {        try (FTPUtil ftpUtil = new FTPUtil("10.211.55.6",21,"ftpuser","123qwe")){            ftpUtil.uploadFile("2.txt","/Users/hk/Desktop/副本.txt");        }catch (Exception e){            e.printStackTrace();        }    }