FTP java.net.ConnectException: Connection refused: connect
来源:互联网 发布:mac版同花顺使用技巧 编辑:程序博客网 时间:2024/05/22 15:51
FTP java.net.ConnectException: Connection refused: connect
排查问题如下: 一般是端口写错引起的
(1):利用linux命令查看端口 netstat -auntp | grep 21
Last login: Fri Oct 28 12:12:24 2016 from 116.226.185.223[root@localhost ~]# netstat -auntp | grep 21tcp 0 0 0.0.0.0:2121 0.0.0.0:* LISTEN 20143/vsftpd tcp 0 0 :::3306 :::* LISTEN 2184/mysqld tcp 0 0 ::ffff:127.0.0.1:3306 ::ffff:127.0.0.1:33699 ESTABLISHED 2184/mysqld tcp 0 0 ::ffff:127.0.0.1:3306 ::ffff:127.0.0.1:33700 ESTABLISHED 2184/mysqld tcp 0 0 ::ffff:127.0.0.1:3306 ::ffff:127.0.0.1:33661 ESTABLISHED 2184/mysqld tcp 0 0 ::ffff:127.0.0.1:3306 ::ffff:127.0.0.1:33688 ESTABLISHED 2184/mysqld tcp 0 0 ::ffff:127.0.0.1:3306 ::ffff:127.0.0.1:33625 ESTABLISHED 2184/mysqld tcp 0 0 ::ffff:127.0.0.1:3306 ::ffff:127.0.0.1:33687 ESTABLISHED 2184/mysqld tcp 0 0 ::ffff:127.0.0.1:3306 ::ffff:127.0.0.1:33702 ESTABLISHED 2184/mysqld [root@localhost ~]#
(2): 如果连接后 读取数据为空 则 做如下修改:
ftp.enterLocalPassiveMode();//如果不加这个读取数据会为空FTPFile[] fs = ftp.listFiles();
(3):完整代码如下:
public void ReadFileFromSftp() { String path="uploads//";String fileName="20161012buy.txt"; String result=""; FTPClient ftp = new FTPClient(); try { int reply; //1.连接服务器 ftp.connect(server,2121); //2.登录服务器 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(user, password); //3.判断登陆是否成功 reply = ftp.getReplyCode(); if (!FTPReply.isPositiveCompletion(reply)) { ftp.disconnect(); } //4.指定要下载的目录 ftp.changeWorkingDirectory(path);// 转移到FTP服务器目录 //5.遍历下载的目录 ftp.enterLocalPassiveMode(); FTPFile[] fs = ftp.listFiles(); for (FTPFile ff : fs) { //解决中文乱码问题,两次解码 byte[] bytes=ff.getName().getBytes("iso-8859-1"); String fn=new String(bytes,"utf8"); if (fn.equals(fileName)) { InputStream inputStream=ftp.retrieveFileStream(ff.getName()); result = IOUtils.toString(inputStream); } } ftp.logout(); } catch (IOException e) { e.printStackTrace(); } finally { if (ftp.isConnected()) { try { ftp.disconnect(); } catch (IOException ioe) { } } } System.out.println("result"+result); }}
1 0
- FTP java.net.ConnectException: Connection refused: connect
- java.net.ConnectException: Connection refused: connect
- java.net.ConnectException: Connection refused: connect
- java.net.ConnectException: Connection refused: connect
- java.net.ConnectException: Connection refused: connect
- Solution: java.net.ConnectException: Connection refused: connect
- android java.net.ConnectException: Connection refused: connect
- java.net.ConnectException Connection refused connect
- java.net.ConnectException: Connection refused: connect
- java.net.ConnectException: Connection refused: connect
- java.net.ConnectException: Connection refused: connect
- JedisConnectionException: java.net.ConnectException: Connection refused: connect
- java.net.ConnectException: Connection refused: connect 解决
- java.net.ConnectException: Connection refused: connect 解决
- ftp连接 java.net.ConnectException: Connection refused
- java.net.ConnectException: Connection refused (Connection refused)
- android java.net.ConnectException: Connection refused: connect 2
- java.net.ConnectException: Connection refused: connect 完美解决(SQLserver2000)
- 【Unity】查看与显示游戏帧数FPS
- PAT乙级(C++)1026-1030
- ubuntu VirtualBox 增加根目录空间
- POJ 3049 DFS
- Android自定义控件
- FTP java.net.ConnectException: Connection refused: connect
- 3673: 可持久化并查集 by zky
- Android Xfermode 实战 实现圆形、圆角图片
- LeetCode 371 Sum of Two Integers
- Hive数据仓库--Java代码JDBC方式访问Hive中表的数据
- GitHub上史上最全的iOS开源项目分类汇总
- Spring之Aop
- OPENGL ES 图形管道
- VIRTIO的vring收发队列创建流程