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java做的比较完善的FTP连接上传下载文件

2019年11月06日 栏目:游戏

java做的比较完善的FTP连接上传下载文件 g&G%g# Yn<[Jo^H|LfB+btNW这是偶

java做的比较完善的FTP连接上传下载文件 g&G%g# Y

n<[Jo^H|Lf

B+btNW

这是偶次写java程序实现公司要求的FTP数据同步,所有原代码如下,以供各位参考并提出宝贵意见!另外俺还有两个功能没有实现,有请高手指点一二:1、如何删除FTP服务器上已经下载过的文件?2、如何将上传的文件改名?上传时在文件名前加“temp_”,上传完毕后需要把文件名改回来。3、如何使用openPassiveDataConnection()方法将ftp连接更改为主动连接,因为要从unix系统配置的ftp服务器下载文件的话,就需要主动连接。 ~ 2&+Vmp

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/* 6xq1p>1mi

******************************************************************************************************* E+8>z><

NYUI+iktW

Filename: ftp.java ` ce~#

Author: leetsing(elove) &=]o*'CW

Create date: 2004-08-30 hizkElY

Use: connect to FTP server,then upload and download file Y+m,u& e

Modify date: 2004-09-05 add to upload file <c}EE{&w

2004-09-13 add to download file 1Frkb5>s

Copy right: Magisky Media Technology Co.,Ltd. :b#g,|/ 6

!XjVDP

******************************************************************************************************* Y|f9`7U

*/ +uAk:/~

//import cz.dhl.io.*; `-rl9

//import cz.dhl.ftp.*; fXxV5D8"f

import sun.net.ftp.*; TtORsu/"7

import sun.net.*; SY Kl/+c^\

import java.applet.*; K;~rkZ P

import java.io.*; {x]1Bq v

import java.io.IOException; @xF6e0`m

import java.util.StringTokenizer; <*QG-uj

import sun.net.ftp.FtpClient; naYEEr _GH

import java.util.ArrayList; ]Oh8gFkv

@Z+ Zs@"$

public class ftp extends Applet sfS@~RzYJ/

{ I>0L@rx

FtpClient aftp; #xfD? d

DataOutputStream outputs ; }`& AY]]K

TelnetInputStream ins; ]-ZcATn$

TelnetOutputStream outs; mHZ(u^R

"^0keq<

int ch; BZ Hq_^#\

public String a; j\(W|\$gH#

String hostname=\"\"; 8 ,'G>\) f

private String path = \"/\"; r(^~IHT2F

.fr.})d1

public static void main(String[] args) c yi?dq-V

{ cLy'~$U

String hostname = \"192.168.0.56\"; .XNE$W_

int port = 2121; )9RN

String uid = \"lee\"; Io/7*)d}

String pwd = \"lee\"; TfbEZrD&H

String RWFileDir = \"D:\\\\smsftp\\\\\";//文件目录 GB[=x'MxE

@\.FSfg5

//连接ftp服务器 XdX|z6QYf

ftp ft = new ftp(); ZKZaw^xT

ft.connect(RWFileDir,hostname,port,uid,pwd); Q+A?sdc^Y%

Tn?r*gk#

//下载文件 Qa45s[w\

if (ft.aftp != null){ dQ4!tZg

try { 9mvHrS\]

ft.getNameList(RWFileDir); K7cQxe!

}catch(IOException e) ^:'Sc(

{ K$R0?H~N

System.out.println(\"下载文件出错:\"+e); v=7cIyY

} RwT^1

} A?snb#2~

Nn7(+<

+| ~&^YC

//上传文件 "a$%6=aSXK

if (ft.aftp != null){ IL=!R}N;

String sdir = RWFileDir + \"subunsubfromsp\\\\\"; STx&OISh

File fdir = new File(sdir); SO>e|Md

String FileName = \"\"; 6Y1[d>)V

#u%vWpt{z

for(int i=0;i FileName = sdir + (fdir.list()); h7j.@P

LMTcLn`

ft.uploadFile(RWFileDir,FileName); g] ,rW

} #` YYa

//System.out.println(\"成功上传的文件:\"); RUU\+o+}"N

//ft.showFileContents(\"subunsubfromsp\\\\\"); N'3vz]&'

} t$;orwOy

+{%@6Rcb

//删除subunsubfromsp目录下已经上传的文件文件 FLmj5*

// ft.deleFile(RWFileDir); 2z2{k y

nQ$1[&Z.

//断开服务器连接 dEu\ eXE?

ft.stop(RWFileDir); |<]M3*7

Os*{\X9k

} PaQx*rRi:

vS-/b!

public FtpClient connect(String RWFileDir,String hostname,int port,String uid,String pwd) FrP<"S;Xz

{ dOQ1E )49

this.hostname = hostname; hX WZI6o%l

System.out.println(\"正在连接\"+hostname+\",请等待.....\"); K 9 L|K

try{ s>iVz/Z

aftp = new FtpClient(hostname,port); va3*1v

aftp.login(uid,pwd); B xqfvbgj

aftp.binary(); 'E^<#rTW}

//aftp.openPortDataConnection(); kaQZ2)

a = \"连接主机:\"+hostname+\"成功!\"; *Fo7i9=L

System.out.println(a); -C$FfR

} :vZ:hM**Vb

catch(FtpLoginException e){ MM0\%(bM=

a=\"登陆主机:\"+hostname+\"失败!请检查用户名或密码是否正确:\"+e; SOIQ3Kj

System.out.println(a); 3\ InnHb

//return false; d[O ^rq[\

} ox\CiP1

catch (IOException e){ X7iz+a4

a=\"连接主机:\"+hostname+\"失败!请检查端口是否正确:\"+e; %K^pNs;

System.out.println(a); >7!D LlJ

//return false; R/lL]|Xj

} y[b[oaIohn

catch(SecurityException e) F|2 JC6]T

{ .N0PT

a=\"无权限与主机:\"+hostname+\"连接!请检查是否有访问权限:\"+e; l{V5h|Z

System.out.println(a); <!JCt

//return false; juzzi%[C

} 5 ?%P=!

^lVX\gq

log(RWFileDir,a); 8 $qe(Y

return aftp; 0;d fmW.

} 9\?~(tS

GSQ% 

public void stop(String RWFileDir) \Ik'S':

{ - ]^|h)Y

String message = \"\"; hf-Dj%N

try { \G;""/Sq

if(aftp!=null){ Qp bh[ ;:

aftp.closeServer(); -" Ofc:]18

message = \"与主机\"+hostname+\"连接已断开!\"; G\1'Zjb}

System.out.println(message); c6[]R0n}

log(RWFileDir,message); ^G< 8%*

} }qT*RNs

} A156XkrR

catch(IOException e) iwG' *B{

{  N.y }Q

message = \"与主机\"+hostname+\"断开连接失败!\"+e; Hz_Bym~e

System.out.println(message); ~AJZBi"

log(RWFileDir,message); ^U?D+e Y

} ,:8oZJP>o

} >ywFcYd-

F `$1- L

?N$- Wa

public boolean downloadFile(String RWFileDir,String filepathname){ Q#Bcdi

boolean result=true; Y[g.o[{55"

String message = \"\"; +v0wfbt#

if (aftp != null) @ lc xgT

{ %((QV**

System.out.println(\"正在下载文件\"+filepathname+\",请等待....\"); fTB~6|NR

String badfile = filepathname.substring(filepathname.length()-4,filepathname.length()); #7AGA'g}

String badlog = filepathname.substring(filepathname.length()-7,filepathname.length()); }Zhk:(+gT

String baddir = \"\"; E(e5a$@z

if ((badfile.compareTo(\".bad\") != 0) && (badlog.compareTo(\".badlog\") != 0)){ u F$?WD;

baddir = \"subunsubtosp\\\\\"; _glx>t6

} ks(U \#e

else{ :u(7y8 [O

baddir = \"bad\\\\\"; tI[!-f9

} E=-^N.R

String strdir = \"subunsubtosp\\\\\"; Hy rg$t E

//System.out.println(RWFileDir + baddir + filepathname); %)}Y4 _

try{ Zq@hqDBY(

//FtpClient fc=new FtpClient(\"192.168.0.56\",2121); OFx8+?yR

//fc.login(\"lee\",\"lee\"); ;1M

int ch; \P

File fi = new File(RWFileDir + baddir + filepathname); * kwC<E_e

//aftp.cd(strdir); ];g .)`

RandomAccessFile getFile = new RandomAccessFile(fi,\"rw\"); O9Im1

getFile.seek(0); b=8]H08L%

TelnetInputStream fget=aftp.get(strdir+filepathname); Ph[{I?ZtZ

DataInputStream puts = new DataInputStream(fget); Wr oltd

while ((ch = puts.read()) >= 0) { &h ; `qb

getFile.write(ch); J">hi`y%W

ka9XeD(B

} NaPlOw>

//s.delete(); xK]Q0+ ^P

~K\goT"F

fget.close(); vI{ Lzn.

getFile.close(); @8^Y_ce

//fc.closeServer(); n^>5c'$y

q&_+AuO

message = \"下载\"+filepathname+\"文件到\"+baddir +\"目录成功!\"; 4<VxVu "4

System.out.println(message); W_B%9k7i

log(RWFileDir,message); ktwi|1t

} &f>b~B#g

catch(IOException e){ 7;4b<nF

message = \"下载\"+filepathname+\"文件到\"+baddir +\"目录失败!\"+e; bET]V'{

System.out.println(message); ahuYOL!v

log(RWFileDir,message); =tC7cK:

result = false ; 2FS;vgo_

/"Mt*~Y

} [[iI`@#

} a::IivT k

else{ O/9{UED|A

result = false; [Dw]<Le

} &* uL9Q,L

return result; ~BPvD$l

} 23F03TW92

r\W )oPYX

98 K Rr>

public boolean uploadFile(String RWFileDir,String filepathname){ [/D#K`'#

boolean result=true; !IWS[mL9e

String message = \"\"; }9]"O4 #k

if (aftp != null) P [@{.

{ .aEJ8@

System.out.println(\"正在上传文件\"+filepathname+\",请等待....\"); 19/ joh

65Ujb0

try{ ?UXr]Ey0

String fg =new String(\"\\\\subunsubfromsp\\\\\"); ;j%9(IMK

int index = filepathname.lastIndexOf(fg); DxRh}rn&9

String filename = filepathname.substring(index+1);  '&8J j

File localFile = new File(filepathname) ; ^o`#"~-

SPs"~)T

RandomAccessFile sendFile = new RandomAccessFile(filepathname,\"r\"); '<lXfe%M&

// EgGv z;r

sendFile.seek(0); gc]x3re,

//改名上传temp_ (=3%A8U

filename = filename.substring(0,15)+\"temp_\"+filename.substring(15,filename.length()); #]F|>#2V

outs = aftp.put(filename); %8 tGDH< #

outputs = new DataOutputStream(outs); ?Q9r 7 Wv

while (sendFile.getFilePointer() < sendFile.length() ) vofwA|US

{ k_J-iG

ch = sendFile.read(); N0MpTHPx

outputs.write(ch); 8 VZ<T_i

} )H}u

B0:u>U5t

rename(filename.substring(15,filename.length()),filename.substring(20,filename.length())); I3~9~ 'bn

outs.close(); IJddHf-

sendFile.close(); eJb}"s

rP53 zN

message = \"上传\"+filepathname+\"文件成功!\"; W/qs@dR_

System.out.println(message); oi&o&V

log(RWFileDir,message); ](kv' T

} 3z,h\0P/

catch(IOException e){ _a \otT

message = \"上传\"+filepathname+\"文件失败!\"+e; I8Hd{EtKB

System.out.println(message); y@ I8e'J

log(RWFileDir,message); 8<  G//O

result = false ;  KcJMX

ow#NeWVt

} ^%8bsa"p

} 6/kW T vD

else{ cS n>A3O

result = false; KeLd9T

} <U?\@|?

return result; a\f?Qh ^

} _{K7>4.8t

-Fp.uq

public void rename(String oldName,String newName){ .<mEBAH

_Vf#)v]Fo

//aftp.renameTo(oldName,newName); E}WGn

File Old = new File(oldName); //oldName Q3,Sq)u*

File New = new File(newName); //newName UUz3<tvSV

//aftp.renameTo(New); 6N)/hqi"k

//boolean Old.renameTo(File newName); vH`J|{kD

//System.out.println(Old); tn>|R.

//System.out.println(New); 8 /G,, 4E

d& }oc

} nvgiKCy]

(Q yK/

public static void deleFile(String RWFileDir) { 6|odqQ

//try { ,Xjb+Nn()h

//取得ReadFile目录下的txt文件 i}) ]b3 `

String sdir = RWFileDir + \"subunsubfromsp\\\\\"; B> !KVSO

File fdir = new File(sdir); rxx}NFztE

String FileName = \"\"; WU4Tg:h

int j = fdir.list().length; b<BXn>&6

<Y5_-QG&|

System.out.println(sdir+\"目录下要删除的文件数:\"+fdir.list().length); 1b$k+ysQw

File file; "-Ipp W-f

for(int i=0;i { w&6JepE&6

//删除subunsubfromsp中的txt文件 Lz5zBBK

FileName = RWFileDir + \"subunsubfromsp\\\\\" + (fdir.list())[0]; o-i1u;*R

file = new File(FileName); k;B N/1.7`

file.delete(); f!['<V

System.out.println(\"已经成功删除\"+FileName+\"文件!\"); 6~$9KjZ<

} U~M fSmZd

//} z? 6Ez!

//catch (IOException e) { JTMP2OL^,

// System.out.println(\"删除txt文件错误!\"); QX/0r c BH

// e.printStackTrace(); OFje<S"$E7

//} 0&_N-%]$EU

} P~F3K{.1

]a5rLV@1mu

^e62"O

public void showFileContents(String strdir) *8qhdi7\)~

{ 5+U\</

StringBuffer buf = new StringBuffer(); o8(T*N(E1

try { f[V/?Y 

aftp.cd(strdir); nY>a(&z

ins= aftp.list(); F%\T a}

while ((ch=ins.read())>=0){ jz SR(*$3-

buf.append((char)ch); q[VXEb

} ,Zf5qz(@

0<ZZIi:

System.out.println(buf.toString()); x]a/+"0h

P4$z=p_C

ins.close(); {y nBC

} 3.GJH#xZ

catch(IOException e) 'Lb0'UtI

{ 3;-Z~8 Ji

} RgD++q

} M`^FQ

gJI&%n,z

pMQW!m:V

b:)kDTx

// 返回当前目录的所有文件及文件夹 =8vS9]g 0

!S(UBs

public ArrayList getFileList() throws IOException { 2a_~<q63nD

BufferedReader dr = new BufferedReader(new InputStreamReader(aftp.list())); mKz6,KRH

ArrayList al = new ArrayList(); rF$Nr 

String s = \"\"; S32!<U{*K

while ( (s = dr.readLine()) != null) { P_VDv/|c

al.add(s); 75pe7$- Z-

} )QswUPJ]

return al; I{FdfRDQE

} #a{z`>I^

/ >W$

public void setPath(String path) throws IOException { iKo0bo{

if (aftp == null) I#\.tQY

this.path = path; 6~F 0>u;

else { ^ft0hl!6

aftp.cd(path); ,{-=izB

} K}=u8h6b

} I9}in 9

BMo#gzd~=

// 返回当前目录的文件名称 Te^EJ@|

oI5.,]h>A?

public ArrayList getNameList(String RWFileDir) throws IOException { ]O;V4P;L

2hP::gibz

BufferedReader dr = new BufferedReader(new InputStreamReader(aftp.nameList(\"subunsubtosp\\\\\"))); 9`E+>l^'/5

ArrayList al = new ArrayList(); `-Qcu

String s = \"\"; JA}$PtGG

while ( (s = dr.readLine()) != null) { T}sjR%NC

al.add(s); comK30{

s = s.substring(13,s.length()); "Kr-`'E

isFile(s); Y|Z*i#

downloadFile(RWFileDir,s); ;MCCd.$bo

//String strFileDelF = aftp.nameList(\"subunsubtosp\\\\\"); -xbc:Yo

File fileDelF=new File(s); S!SOYJ/

fileDelF.delete(); =M2S'uo

} a/=N&}*`(q

return al; J,RQjUW-

//System.out.println(al.add(s)); d07 VK

} ]e,_ Sz

-]Fuf9gZR@

// 判断一行文件信息是否为目录 eg SlS

g:Sgt ll

public boolean isDir(String line) { P4+"n.dO(

return ( (String) parseLine(line).get(0)).indexOf(\"d\") != -1; QO> mo.B

} z>m/6*8f

,:^4g)zeqF

public boolean isFile(String line) { F+~ITtLC]

return!isDir(line); U h,o)-iR

} AP\VX

2X S/

// 处理getFileList取得的行信息 n %{ hS Rx

CX=G.bp

private ArrayList parseLine(String line) { xz+o(37

ArrayList s1 = new ArrayList(); i\}R0I1zS

StringTokenizer st = new StringTokenizer(line, \" \"); ?gLwz

while (st.hasMoreTokens()) { u =O~P

s1.add(st.nextToken()); ;Rzx9h2

} cLx3h

return s1; !g7^CA7$n

} rjgU1

/S?l _t9

//写消息日志 -# S:R/

public static void log(String RWFileDir,String msg) V/6=H'T

{ q"SUl 3

String message = \"\"; ?m*`!= 8

try { dtk.pz<y

java.text.DateFormat df = new java.text.SimpleDateFormat(\"yyyy-MM-dd HH:mm:ss\"); 8B+W)JZR

java.text.DateFormat dflog = new java.text.SimpleDateFormat(\"yyyyMMdd\"); kY: _jV

java.util.Date date = new java.util.Date() ; am0#T,ab;

String datestr = df.format(new java.util.Date()) ; n^<_ m{

String datelog = dflog.format(new java.util.Date()) ; .~4bnRK

//String datelog = datestr.substring(0,10); UHi!>J'

//datelog = datelog.replace(\'-\',\' \'); xDg11@G\

3<l5c}"q

//按日期每天生成一个日志文件 /v9o1x

FileWriter fwl = new FileWriter(RWFileDir + \"CMSSftp\"+datelog+\".log\",true); ']{K6y h

PrintWriter outl = new PrintWriter(fwl); _a3\P7D_D

outl.println(datestr + \" \" + msg); w]"Z2Yl)XK

outl.close(); ]xI,,FBJO{

fwl.close(); eMp*h4\4

}catch (IOException e) { 5!f|bS]Y

message = \"写log文件错误!\"+e; G\_n 4?/u

e.printStackTrace(); 2fM^+Y<*

log(RWFileDir,message); +s. ]bE@

System.out.println(message); AJ6'O/

} P~ 7H@e

} _ y' MEuJ

}

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