Android is based on Apache FTP Server

I recently studied how to implement the FTP server function on the android client. I searched a few on the Internet and found that I could not use a variety of plagiarism. I 'd better study it myself.

First download the FTP server jar and configuration files from the Apache official website. The latest version is Apache ftpserver 1.0.6 release.

Take a look:

Because Apache has encapsulated FTP server-related implementations, it is much easier to implement them.

Import path \ apache-ftpserver-1.0.6 \ common \ Lib related jar package

Main jar package files

Implementation Code:

Package COM. orgcent. FTP; import Java. io. file; import Java. io. filenotfoundexception; import Java. io. fileoutputstream; import Java. io. ioexception; import Java. io. inputstream; import java.net. inetaddress; import java.net. networkinterface; import java.net. socketexception; import Java. util. enumeration; import Org. apache. ftpserver. ftpserver; import Org. apache. ftpserver. ftpserverfactory; import Org. apache. ftpserver. f Tplet. ftpexception; import Org. apache. ftpserver. listener. listenerfactory; import Org. apache. ftpserver. SSL. sslconfigurationfactory; import Org. apache. ftpserver. usermanager. propertiesusermanagerfactory; import android. app. activity; import android. content. context; import android. OS. bundle; import android. OS. environment; import android. util. log; import android. widget. textview; public class ftpserveractivity ext Ends activity {private ftpserver mftpserver; private string ftpconfigdir = environment. getexternalstoragedirectory (). getabsolutepath () + "/ftpconfig/"; @ overridepublic void oncreate (bundle savedinstancestate) {super. oncreate (savedinstancestate); setcontentview (R. layout. main); textview TV = (textview) findviewbyid (R. id. tvtext); string info = "please visit the following address \ n" + "ftp: //" + getlocalipaddress () + ": 2221 \ n" through a browser or my computer "; TV. sette XT (Info); file F = new file (ftpconfigdir); If (! F. exists () F. mkdir (); copyresourcefile (R. raw. users, ftpconfigdir + "users. properties "); config1 ();} Public String getlocalipaddress () {string strip = NULL; try {for (enumeration <networkinterface> en = networkinterface. getnetworkinterfaces (); en. hasmoreelements ();) {networkinterface INTF = en. nextelement (); For (enumeration <inetaddress> enumipaddr = INTF. getinetaddresses (); enumipaddr. hasmoreelements () ;) {Inetaddress = enumipaddr. nextelement (); If (! Inetaddress. isloopbackaddress () {strip = inetaddress. gethostaddress (). tostring () ;}}} catch (socketexception ex) {log. E ("MSG", Ex. tostring ();} return strip;} private void copyresourcefile (int rid, string targetfile) {inputstream fin = (context) This ). getresources (). openrawresource (RID); fileoutputstream Fos = NULL; int length; try {Fos = new fileoutputstream (targetfile); byte [] buffer = new Te [1024]; while (length = fin. Read (buffer ))! =-1) {FOS. write (buffer, 0, length) ;}} catch (filenotfoundexception e) {e. printstacktrace ();} catch (ioexception e) {e. printstacktrace ();} finally {If (Fin! = NULL) {try {fin. Close () ;}catch (ioexception e) {e. printstacktrace () ;}} if (FOS! = NULL) {try {FOS. close ();} catch (ioexception e) {e. printstacktrace () ;}}} void config1 () {// now, let's configure the port on which the default listener waits for connections. ftpserverfactory serverfactory = new ftpserverfactory (); listenerfactory factory = new listenerfactory (); propertiesusermanagerfactory usermanagerfactory = new propertiesusermanagerfactory (); string [] STR = {"mkdir", ftpconfigdi R}; try {process PS = runtime.getruntime(cmd.exe C (STR); try {ps. waitfor ();} catch (interruptedexception e) {e. printstacktrace () ;}} catch (ioexception e) {e. printstacktrace ();} string filename = ftpconfigdir + "users. properties "; //"/sdcard/users. properties "; file files = new file (filename); usermanagerfactory. setfile (files); serverfactory. setusermanager (usermanagerfactory. createusermanager (); // set T He port of the listenerfactory. setport (2221); // Replace the default listenerserverfactory. addlistener ("default", factory. createlistener (); // start the serverftpserver Server = serverfactory. createserver (); this. mftpserver = server; try {server. start ();} catch (ftpexception e) {e. printstacktrace () ;}} void config2 () {/now, let's make it possible for a client to use ftps (FTP over SSL) for the defau Lt listener. ftpserverfactory serverfactory = new ftpserverfactory (); listenerfactory factory = new listenerfactory (); // set the port of the listenerfactory. setport (2221); // define SSL configurationsslconfigurationfactory SSL = new sslconfigurationfactory (); SSL. setkeystorefile (new file (ftpconfigdir + "ftpserver. jks "); SSL. setkeystorepassword ("password"); // set the SSL configuration for the listenerf Acloud. setsslconfiguration (SSL. createsslconfiguration (); factory. setimplicitssl (true); // Replace the default listenerserverfactory. addlistener ("default", factory. createlistener (); propertiesusermanagerfactory usermanagerfactory = new propertiesusermanagerfactory (); usermanagerfactory. setfile (new file (ftpconfigdir + "users. properties "); serverfactory. setusermanager (usermanagerfactory. createusermanag Er (); // start the serverftpserver Server = serverfactory. createserver (); this. mftpserver = server; try {server. start ();} catch (ftpexception e) {e. printstacktrace () ;}@ overrideprotected void ondestroy () {super. ondestroy (); If (null! = Mftpserver) {mftpserver. Stop (); mftpserver = NULL ;}}}

The most important step is to modify the configuration file.

Configuration file directory: apache-ftpserver-1.0.6 \ res \ conf

Here we mainly use the users. properties configuration file. The modification content is as follows:

# Licensed to the Apache Software Foundation (ASF) under one# or more contributor license agreements.  See the NOTICE file# distributed with this work for additional information# regarding copyright ownership.  The ASF licenses this file# to you under the Apache License, Version 2.0 (the# "License"); you may not use this file except in compliance# with the License.  You may obtain a copy of the License at##  http://www.apache.org/licenses/LICENSE-2.0## Unless required by applicable law or agreed to in writing,# software distributed under the License is distributed on an# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY# KIND, either express or implied.  See the License for the# specific language governing permissions and limitations# under the License.# Password is "admin"ftpserver.user.admin.userpassword=21232F297A57A5A743894A0E4A801FC3ftpserver.user.admin.homedirectory=/mnt/sdcardftpserver.user.admin.enableflag=trueftpserver.user.admin.writepermission=trueftpserver.user.admin.maxloginnumber=0ftpserver.user.admin.maxloginperip=0ftpserver.user.admin.idletime=0ftpserver.user.admin.uploadrate=0ftpserver.user.admin.downloadrate=0ftpserver.user.anonymous.userpassword=adminftpserver.user.anonymous.homedirectory=/mnt/sdcardftpserver.user.anonymous.enableflag=trueftpserver.user.anonymous.writepermission=trueftpserver.user.anonymous.maxloginnumber=20ftpserver.user.anonymous.maxloginperip=2ftpserver.user.anonymous.idletime=300ftpserver.user.anonymous.uploadrate=4800ftpserver.user.anonymous.downloadrate=4800

Finally, do not forget the related permissions:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" >    </uses-permission>    <uses-permission android:name="android.permission.INTERNET" >    </uses-permission>    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" >    </uses-permission>    <uses-permission android:name="android.permission.READ_PHONE_STATE" >    </uses-permission>    <uses-permission android:name="android.permission.WAKE_LOCK" >    </uses-permission>    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" >    </uses-permission>

OK. In this way, the FTP server function on the android end is simply completed.