ftp_host=192.168.110.128

ftp_port=21

ftp_username=ftpuser

ftp_password=ftpuser

ftp_dir=/home/ftpuser/jd

ftp_url=http://www.images.com

public class FtpUtils {

    private static String ftp_host = null;

    private static String ftp_port = null;

    private static String ftp_username = null;

    private static String ftp_password = null;

    private static String ftp_dir = null;

    private static String ftp_url = null;

    //1、封装参数

    static{

        InputStream ris = FtpUtils.class.getClassLoader().getResourceAsStream("ftp.properties");

        Properties pp = new Properties();

        try {

            pp.load(ris);

            ftp_host = pp.getProperty("ftp_host");

            ftp_port = pp.getProperty("ftp_port");

            ftp_username = pp.getProperty("ftp_username");

            ftp_password = pp.getProperty("ftp_password");

            ftp_dir = pp.getProperty("ftp_dir");

            ftp_url = pp.getProperty("ftp_url");

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

    /****

     * 实现建文件上传到静态资源服务器

     */

    public static String uploadFile(String remote,InputStream local) {

        try {

            //创建FTPClient对象

            FTPClient client=new FTPClient();

            //建立和ftp服务的链接

            client.connect(ftp_host, Integer.parseInt(ftp_port));

            //身份验证

            client.login(ftp_username, ftp_password);

            //设置上传的文件类型

            client.setFileType(FTP.BINARY_FILE_TYPE);

            //切换工作目录

            if(!client.changeWorkingDirectory(ftp_dir)) {

                client.makeDirectory(ftp_dir);

                client.changeWorkingDirectory(ftp_dir);

            }

            //上传

            client.storeFile(remote, local);

        }catch(Exception ex) {

            ex.printStackTrace();

        }

        return ftp_url+"/jd/"+remote;

    }

}

<!-- ftpclient客户端  -->

<!--ftp文件上传-->

 <dependency>

       <groupId>commons-net</groupId>

       <artifactId>commons-net</artifactId>

       <version>3.3</version>

 </dependency>

/**

     * 处理上传图片请求

     */

    @Override

    public Map<String, Object> uploadImageService(MultipartFile mf) {

        // TODO Auto-generated method stub

        HashMap<String, Object> map = new HashMap<>();

        try {

            //文件重命名

            String oldName = mf.getOriginalFilename();

            String remote = IDUtils.genImageName()+oldName.substring(oldName.lastIndexOf("."));

            String url = FtpUtils.uploadFile(remote, mf.getInputStream());

            map.put("error", 0);

            map.put("url", url);

        } catch (IOException e) {

            // TODO Auto-generated catch block

            map.put("error", 1);

            map.put("message", "上传失败");

            e.printStackTrace();

        }

        return map;

    }