java做的比较完善的FTP上传下载文件服务器源码

1、java做的比较完善的ftp上传下载文件服务器源码 java做的比较完善的ftp上传下载文件服务器源码 filename: ftp.java author: leetsing(elove) create date: 2021-08-30 use: connect to ftp server,then upload and download file modify date: 2021-09-05 add to upload file 2021-09-13 add to download file copy right: magisky media technology co.,ltd. * 字

2、串7 */ /import cz.dhl.io.*; /import cz.dhl.ftp.*; import .ftp.*; import .*; import java.applet.*; import java.io.*; import java.io.ioexception; import java.util.stringtokenizer; import .ftp.ftpclient; import java.util.arraylist; public class ftp extends applet ftpclient aftp; dataoutputstream outputs

3、 ; telnetinputstream ins; telnetoutputstream outs; int ch; public string a; string hostname=; private string path = /; public static void main(string args) string hostname = 6; int port = 2121; string uid = lee; string pwd = lee; string rwfiledir = d:smsftp;/文件名目 java做的比较完善的ftp上传下载文件服务器源码

4、 /连接ftp服务器 ftp ft = new ftp(); ft.connect(rwfiledir,hostname,port,uid,pwd); 字串3 /下载文件 if (ft.aftp != null) try ft.getnamelist(rwfiledir); catch(ioexception e) system.out.println(下载文件出错：+e); /上传文件 if (ft.aftp != null) string sdir = rwfiledir + subunsubfromsp; file fdir = new file(sdir); string filena

5、me = ; for(int i=0;i filename = sdir + (fdir.list()i; ft.uploadfile(rwfiledir,filename); /system.out.println(胜利上传的文件：); /ft.showfilecontents(subunsubfromsp); /删除subunsubfromsp名目下已经上传的文件文件 字串6 / ft.delefile(rwfiledir); /断开服务器连接 ft.stop(rwfiledir); public ftpclient connect(string rwfiledir,string host

6、name,int uid,string pwd) this.hostname = hostname; port,string java做的比较完善的ftp上传下载文件服务器源码 system.out.println(正在连接+hostname+，请等待.); try aftp = new ftpclient(hostname,port); aftp.login(uid,pwd); aftp.binary(); /aftp.openportdataconnection(); a = 连接主机:+hostname+胜利!; system.out.println(a); catch(ftplogin

7、exception e) a=登陆主机:+hostname+失败!请检查用户名或密码是否正确：+e; system.out.println(a); /return false; catch (ioexception e) a=连接主机:+hostname+失败!请检查端口是否正确：+e; 字串3 system.out.println(a); /return false; catch(securityexception e) a=无权限与主机:+hostname+连接!请检查是否有访问权限：+e; system.out.println(a); /return false; log(rwfiled

8、ir,a); return aftp; public void stop(string rwfiledir) string message = ; try if(aftp!=null) aftp.closeserver(); message = 与主机+hostname+连接已断开!; system.out.println(message); log(rwfiledir,message); catch(ioexception e) message = 与主机+hostname+断开连接失败!+e; 字串2 java做的比较完善的ftp上传下载文件服务器源码 system.out.println

9、(message); log(rwfiledir,message); public boolean downloadfile(string rwfiledir,string filepathname) boolean result=true; string message = ; if (aftp != null) system.out.println(正在下载文件+filepathname+,请等待.); string badfile filepathname.substring(filepathname.length()-4,filepathname.length(); string ba

10、dlog filepathname.substring(filepathname.length()-7,filepathname.length(); = = string baddir = ; if (pareto(.bad) != 0) (pareto(.badlog) != 0) baddir = subunsubtosp; else baddir = bad; 字串9 string strdir = subunsubtosp; /system.out.println(rwfiledir + baddir + filepathname); try /ftpclient fc=new ftp

11、client(6,2121); /fc.login(lee,lee); int ch; file fi = new file(rwfiledir + baddir + filepathname); /aftp.cd(strdir); randomaccessfile getfile = new randomaccessfile(fi,rw); getfile.seek(0); telnetinputstream fget=aftp.get(strdir+filepathname); datainputstream puts = new datainputstream(fg

12、et); while (ch = puts.read() = 0) getfile.write(ch); /s.delete(); 字串1 fget.close(); getfile.close(); /fc.closeserver(); java做的比较完善的ftp上传下载文件服务器源码 message = 下载+filepathname+文件到+baddir +名目胜利!; system.out.println(message); log(rwfiledir,message); catch(ioexception e) message = 下载+filepathname+文件到+baddi

13、r +名目失败!+e; system.out.println(message); log(rwfiledir,message); result = false ; else result = false; return result; public boolean uploadfile(string rwfiledir,string filepathname) boolean result=true; 字串8 string message = ; if (aftp != null) system.out.println(正在上传文件+filepathname+,请等待.); try strin

14、g fg =new string(subunsubfromsp); int index = stindexof(fg); string filename = filepathname.substring(index+1); file localfile = new file(filepathname) ; randomaccessfile sendfile = new randomaccessfile(filepathname,r); / sendfile.seek(0); /改名上传temp_ filename filename.substring(0,15)+temp_+filename.

15、substring(15,filename.length(); outs = aftp.put(filename); outputs = new dataoutputstream(outs); 字串8 while (sendfile.getfilepointer() sendfile.length() ) ch = sendfile.read(); = java做的比较完善的ftp上传下载文件服务器源码 outputs.write(ch); rename(filename.substring(15,filename.length(),filename.substring(20,filename

16、.length(); outs.close(); sendfile.close(); message = 上传+filepathname+文件胜利!; system.out.println(message); log(rwfiledir,message); catch(ioexception e) message = 上传+filepathname+文件失败!+e; system.out.println(message); log(rwfiledir,message); result = false ; 字串1 else result = false; return result; publi

17、c void rename(string oldname,string newname) /aftp.renameto(oldname,newname); file old = new file(oldname); /oldname file new = new file(newname); /newname /aftp.renameto(new); /boolean old.renameto(file newname); /system.out.println(old); /system.out.println(new); public static void delefile(string rwfiledir) /try java做的比较完善的ftp上传下载文件服务器源码 /取得readfile名目下的txt文件 string sdir = rwfiledir + subunsubfromsp; file fdir = new file(sdir); string filename = ; int j = f