ftp实现文件上传(下载)

例子代码

package getUrlPic;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;

public class FtpUploadFile {
    public static void main(String[] args){
//        public static boolean uploadFile(String url,int port,String username, String password, String path, String filename, InputStream input) {
//        boolean success = false;
        FTPClient ftp = new FTPClient();
        InputStream input = null;
        try {
            int reply;
            ftp.connect("localhost", 21);//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("test", "test");//登录
            reply = ftp.getReplyCode();
            if (!FTPReply.isPositiveCompletion(reply)) {
                ftp.disconnect();
                System.out.println("can not connect");
//            return success;
            }else{
                ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
//                ftp.changeWorkingDirectory(path);
                input = new ByteArrayInputStream("中xuxxx".getBytes("utf-8"));
                ftp.storeFile("test.txt", input);

                // 创建目录
                ftp.makeDirectory("/test/bb");

                //列出目录
                FTPFile[] dirs = ftp.listDirectories("/test");
                for(FTPFile f : dirs ){
                    System.out.println(f.getName());
                }
            }
//            ftp.changeWorkingDirectory(path);
//            ftp.storeFile(filename, input); 

//            input.close();
//            ftp.logout();
//            success = true;
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if(input != null){
                try{
                    input.close();
                }catch(IOException e){
                    e.printStackTrace();
                }
            }
            if (ftp.isConnected()) {
                try {
                    ftp.disconnect();
                } catch (IOException ioe) {
                }
            }
        }
//            return success;
            }
//    }
}

参考

http://www.cnblogs.com/lucky_dai/p/6178076.html
http://www.jb51.net/article/86367.htm
http://blog.csdn.net/kardelpeng/article/details/6588284
https://zhidao.baidu.com/question/433380231.html
https://zhidao.baidu.com/question/1387264816675112740.html
http://www.jb51.net/article/86367.htm