java代码操作ftp java代码操作数据库如何运行

如何用Java实现FTP服务器

FTP(File Transfer Protocol 文件传输协议)是Internet 上用来传送文件的协议。在Internet上通过FTP 服务器可以进行文件的上传(Upload)或下载(Download)。FTP是实时联机服务，在使用它之前必须是具有该服务的一个用户(用户名和口令)，工作时客户端必须先登录到作为服务器一方的计算机上，用户登录后可以进行文件搜索和文件传送等有关操作，如改变当前工作目录、列文件目录、设置传输参数及传送文件等。使用FTP可以传送所有类型的文件，如文本文件、二进制可执行文件、图象文件、声音文件和数据压缩文件等。

成都创新互联公司专注于企业全网整合营销推广、网站重做改版、平度网站定制设计、自适应品牌网站建设、H5高端网站建设、商城网站定制开发、集团公司官网建设、外贸网站建设、高端网站制作、响应式网页设计等建站业务，价格优惠性价比高，为平度等各大城市提供网站开发制作服务。

FTP 命令

FTP 的主要操作都是基于各种命令基础之上的。常用的命令有：

设置传输模式，它包括ASCⅡ(文本) 和BINARY 二进制模式;

目录操作，改变或显示远程计算机的当前目录(cd、dir/ls 命令);

连接操作，open命令用于建立同远程计算机的连接；close命令用于关闭连接;

发送操作，put命令用于传送文件到远程计算机；mput 命令用于传送多个文件到远程计算机;

获取操作，get命令用于接收一个文件；mget命令用于接收多个文件。

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635

import java.net.Socket;import org.apache.log4j.Logger;/** * 角色——服务器A * @author Leon * */public class ServerA{ public static void main(String[] args){ final String F_DIR = "c:/test";//根路径 final int PORT = 22;//监听端口号 Logger.getRootLogger(); Logger logger = Logger.getLogger("com"); try{ ServerSocket s = new ServerSocket(PORT); logger.info("Connecting to server A..."); logger.info("Connected Successful! Local Port:"+s.getLocalPort()+". Default Directory:'"+F_DIR+"'."); while( true ){ //接受客户端请求 Socket client = s.accept(); //创建服务线程 new ClientThread(client, F_DIR).start(); } } catch(Exception e) { logger.error(e.getMessage()); for(StackTraceElement ste : e.getStackTrace()){ logger.error(ste.toString()); } } }}import java.io.BufferedReader; import java.io.File;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.io.PrintWriter;import java.io.RandomAccessFile;import java.net.ConnectException;import java.net.InetAddress;import java.net.ServerSocket;import java.net.Socket;import java.net.UnknownHostException;import java.nio.charset.Charset;import java.util.Random;import org.apache.log4j.Logger;/** * 客户端子线程类 * @author Leon * */public class ClientThread extends Thread { private Socket socketClient;//客户端socket private Logger logger;//日志对象 private String dir;//绝对路径 private String pdir = "/";//相对路径 private final static Random generator = new Random();//随机数 public ClientThread(Socket client, String F_DIR){ this.socketClient = client; this.dir = F_DIR; } @Override public void run() { Logger.getRootLogger(); logger = Logger.getLogger("com"); InputStream is = null; OutputStream os = null; try { is = socketClient.getInputStream(); os = socketClient.getOutputStream(); } catch (IOException e) { logger.error(e.getMessage()); for(StackTraceElement ste : e.getStackTrace()){ logger.error(ste.toString()); } } BufferedReader br = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8"))); PrintWriter pw = new PrintWriter(os); String clientIp = socketClient.getInetAddress().toString().substring(1);//记录客户端IP String username = "not logged in";//用户名 String password = "";//口令 String command = "";//命令 boolean loginStuts = false;//登录状态 final String LOGIN_WARNING = "530 Please log in with USER and PASS first."; String str = "";//命令内容字符串 int port_high = 0; int port_low = 0; String retr_ip = "";//接收文件的IP地址 Socket tempsocket = null; //打印欢迎信息 pw.println("220-FTP Server A version 1.0 written by Leon Guo"); pw.flush(); logger.info("("+username+") ("+clientIp+") Connected, sending welcome message..."); logger.info("("+username+") ("+clientIp+") 220-FTP Server A version 1.0 written by Leon Guo"); boolean b = true; while ( b ){ try { //获取用户输入的命令 command = br.readLine(); if(null == command) break; } catch (IOException e) { pw.println("331 Failed to get command"); pw.flush(); logger.info("("+username+") ("+clientIp+") 331 Failed to get command"); logger.error(e.getMessage()); for(StackTraceElement ste : e.getStackTrace()){ logger.error(ste.toString()); } b = false; } /* * 访问控制命令 */ // USER命令 if(command.toUpperCase().startsWith("USER")){ logger.info("(not logged in) ("+clientIp+") "+command); username = command.substring(4).trim(); if("".equals(username)){ pw.println("501 Syntax error"); pw.flush(); logger.info("(not logged in) ("+clientIp+") 501 Syntax error"); username = "not logged in"; } else{ pw.println("331 Password required for " + username); pw.flush(); logger.info("(not logged in) ("+clientIp+") 331 Password required for " + username); } loginStuts = false; } //end USER // PASS命令 else if(command.toUpperCase().startsWith("PASS")){ logger.info("(not logged in) ("+clientIp+") "+command); password = command.substring(4).trim(); if(username.equals("root") password.equals("root")){ pw.println("230 Logged on"); pw.flush(); logger.info("("+username+") ("+clientIp+") 230 Logged on");// logger.info("客户端 "+clientIp+" 通过 "+username+"用户登录"); loginStuts = true; } else{ pw.println("530 Login or password incorrect!"); pw.flush(); logger.info("(not logged in) ("+clientIp+") 530 Login or password incorrect!"); username = "not logged in"; } } //end PASS // PWD命令 else if(command.toUpperCase().startsWith("PWD")){ logger.info("("+username+") ("+clientIp+") "+command); if(loginStuts){// logger.info("用户"+clientIp+"："+username+"执行PWD命令"); pw.println("257 /""+pdir+"/" is current directory"); pw.flush(); logger.info("("+username+") ("+clientIp+") 257 /""+pdir+"/" is current directory"); } else{ pw.println(LOGIN_WARNING); pw.flush(); logger.info("("+username+") ("+clientIp+") "+LOGIN_WARNING); } } //end PWD // CWD命令 else if(command.toUpperCase().startsWith("CWD")){ logger.info("("+username+") ("+clientIp+") "+command); if(loginStuts){ str = command.substring(3).trim(); if("".equals(str)){ pw.println("250 Broken client detected, missing argument to CWD. /""+pdir+"/" is current directory."); pw.flush(); logger.info("("+username+") ("+clientIp+") 250 Broken client detected, missing argument to CWD. /""+pdir+"/" is current directory."); } else{ //判断目录是否存在 String tmpDir = dir + "/" + str; File file = new File(tmpDir); if(file.exists()){//目录存在 dir = dir + "/" + str; if("/".equals(pdir)){ pdir = pdir + str; } else{ pdir = pdir + "/" + str; }// logger.info("用户"+clientIp+"："+username+"执行CWD命令"); pw.println("250 CWD successful. /""+pdir+"/" is current directory"); pw.flush(); logger.info("("+username+") ("+clientIp+") 250 CWD successful. /""+pdir+"/" is current directory"); } else{//目录不存在 pw.println("550 CWD failed. /""+pdir+"/": directory not found."); pw.flush(); logger.info("("+username+") ("+clientIp+") 550 CWD failed. /""+pdir+"/": directory not found.");

如何用java代码实现ftp文件上传

import java.io.File;

import java.io.FileInputStream;

import org.apache.commons.net.;

public class test {

private FTPClient ftp;

/**

* @param path 上传到ftp服务器哪个路径下

* @param addr 地址

* @param port 端口号

* @param username 用户名

* @param password 密码

* @return

* @throws Exception

private boolean connect(String path,String addr,int port,String username,String password) throws Exception {

boolean result = false;

ftp = new FTPClient();

int reply;

;

reply = ;

if (!FTPReply.isPositiveCompletion(reply)) {

;

return result;

}

;

result = true;

return result;

}

/**

* @param file 上传的文件或文件夹

* @throws Exception

private void upload(File file) throws Exception{

if(file.isDirectory()){

(file.getName());

String[] files = file.list();

for (int i = 0; i files.length; i++) {

File file1 = new File(file.getPath()+"\\"+files[i] );

if(file1.isDirectory()){

upload(file1);

;

}else{

File file2 = new File(file.getPath()+"\\"+files[i]);

如何用JAVA实现FTP访问

在主函数中，完成服务器端口的侦听和服务线程的创建。我们利用一个静态字符串变量initDir 来保存服务器线程运行时所在的工作目录。服务器的初始工作目录是由程序运行时用户输入的，缺省为C盘的根目录。

具体的代码如下：

public class ftpServer extends Thread{

private Socket socketClient;

private int counter;

private static String initDir;

public static void main(String[] args){

if(args.length != 0) {

initDir = args[0];

}else{ initDir = "c:";}

int i = 1;

try{

System.out.println("ftp server started!");

//监听21号端口

ServerSocket s = new ServerSocket(21);

for(;;){

//接受客户端请求

Socket incoming = s.accept();

//创建服务线程

new ftpServer(incoming,i).start();

i++;

}

}catch(Exception e){}

}

java中怎么实现ftp文件传输

package com.quantongfu.;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.net.ServerSocket;

import java.util.List;

import org.apache.commons.net.;

import org.apache.log4j.Logger;

import org.apache.log4j.net.SocketServer;

import com.quantongfu.conf.FtpConf;

/**

* @项目名称: telinSyslog

* @文件名称:

* @创建日期：2015年9月14日下午3:22:08

* @功能描述：ftp实体类，用于连接，上传

* @修订记录：

public class Ftp {

private static Logger logger = Logger.getLogger();

private FTPClient ftp;

/**

* @param path

* 上传到ftp服务器哪个路径下

* @param addr

* 地址

* @param port

* 端口号

* @param username

* 用户名

* @param password

* 密码

* @return

* @throws Exception

public boolean connect() throws Exception {

boolean result = false;

ftp = new FTPClient();

int reply;

(FtpConf.FTP_HOST, FtpConf.FTP_PORT);

(FtpConf.FTP_USER_NAME, FtpConf.FTP_PASSWORD);

;

reply = ;

if (!FTPReply.isPositiveCompletion(reply)) {

;

return result;

}

if (FtpConf.IS_FTP_DIRECTORY) {

;

}

result = true;

return result;

}

/**

* @param files

* 上传的文件

* @throws Exception

public boolean upload(File file) throws IOException {

FileInputStream input = null;

try {

input = new FileInputStream(file);

boolean b = (file.getName() + ".tmp", input);

if (b) {

b = (file.getName() + ".tmp", file.getName());

}

return b;

} catch (Exception e) {

e.printStackTrace();

return false;

} finally {

if (input != null) {

input.close();

}

/**

* @param files

* 上传的文件

* @throws Exception

public boolean upload(ServerSocket server, File file) throws Exception {

FileInputStream input = null;

try {

if (!file.exists()) {

return true;

}

input = new FileInputStream(file);

boolean b = (server, file.getName() + ".tmp", input);

if (b) {

b = (file.getName() + ".tmp", file.getName());

if (b) {

file.delete();

}

return b;

} catch (Exception e) {

logger.error("ftp error" + e.getMessage());

return false;

} finally {

if (input != null) {

try {

input.close();

} catch (IOException e) {

e.printStackTrace();

}

/*断开连接*/

public void disConnect() {

try {

if (ftp != null) {

;

}

} catch (IOException e) {

e.printStackTrace();

}

/*获取连接*/

public static Ftp getFtp() {

Ftp ftp = new Ftp();

try {

;

} catch (Exception e) {

logger.error("FTP连接异常" + e.getMessage());

e.printStackTrace();

}

return ftp;

}

/*重连*/

public Ftp reconnect() {

disConnect();

return getFtp();

}

使用Apache FtpClient jar包，获取jar :

新闻名称：java代码操作ftp java代码操作数据库如何运行
文章位置：http://mswzjz.cn/article/doeddsd.html

网站建设知识

java代码操作ftp java代码操作数据库如何运行

如何用Java实现FTP服务器

如何用java代码实现ftp文件上传

如何用JAVA实现FTP访问

java中怎么实现ftp文件传输

其他资讯