java從ftp獲取文件
拿去用吧。
packagecom.weixin.util;
importjava.io.File;
importjava.io.FileOutputStream;
importjava.io.IOException;
importjava.io.InputStream;
importjava.io.OutputStream;
importjava.io.PrintWriter;
importjava.io.RandomAccessFile;
importorg.apache.commons.net.PrintCommandListener;
importorg.apache.commons.net.ftp.FTP;
importorg.apache.commons.net.ftp.FTPClient;
importorg.apache.commons.net.ftp.FTPFile;
importorg.apache.commons.net.ftp.FTPReply;
importcom.weixin.constant.DownloadStatus;
importcom.weixin.constant.UploadStatus;
/**
*支持斷點續傳的FTP實用類
*@version0.1實現基本斷點上傳下載
*@version0.2實現上傳下載進度匯報
*@version0.3實現中文目錄創建及中文文件創建，添加對於中文的支持
*/
publicclassContinueFTP{
publicFTPClientftpClient=newFTPClient();
publicContinueFTP(){
//設置將過程中使用到的命令輸出到控制台
this.ftpClient.addProtocolCommandListener(newPrintCommandListener(newPrintWriter(System.out)));
}
/**
*連接到FTP伺服器
*@paramhostname主機名
*@paramport埠
*@paramusername用戶名
*@parampassword密碼
*@return是否連接成功
*@throwsIOException
*/
publicbooleanconnect(Stringhostname,intport,Stringusername,Stringpassword)throwsIOException{
ftpClient.connect(hostname,port);
ftpClient.setControlEncoding("GBK");
if(FTPReply.isPositiveCompletion(ftpClient.getReplyCode())){
if(ftpClient.login(username,password)){
returntrue;
}
}
disconnect();
returnfalse;
}
/**
*從FTP伺服器上下載文件,支持斷點續傳，上傳百分比匯報
*@paramremote遠程文件路徑
*@paramlocal本地文件路徑
*@return上傳的狀態
*@throwsIOException
*/
publicDownloadStatusdownload(Stringremote,Stringlocal)throwsIOException{
//設置被動模式
ftpClient.enterLocalPassiveMode();
//設置以二進制方式傳輸
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
DownloadStatusresult;
//檢查遠程文件是否存在
FTPFile[]files=ftpClient.listFiles(newString(remote.getBytes("GBK"),"iso-8859-1"));
if(files.length!=1){
System.out.println("遠程文件不存在");
returnDownloadStatus.Remote_File_Noexist;
}
longlRemoteSize=files[0].getSize();
Filef=newFile(local);
//本地存在文件，進行斷點下載
if(f.exists()){
longlocalSize=f.length();
//判斷本地文件大小是否大於遠程文件大小
if(localSize>=lRemoteSize){
System.out.println("本地文件大於遠程文件，下載中止");
returnDownloadStatus.Local_Bigger_Remote;
}
//進行斷點續傳，並記錄狀態
FileOutputStreamout=newFileOutputStream(f,true);
ftpClient.setRestartOffset(localSize);
InputStreamin=ftpClient.retrieveFileStream(newString(remote.getBytes("GBK"),"iso-8859-1"));
byte[]bytes=newbyte[1024];
longstep=lRemoteSize/100;
longprocess=localSize/step;
intc;
while((c=in.read(bytes))!=-1){
out.write(bytes,0,c);
localSize+=c;
longnowProcess=localSize/step;
if(nowProcess>process){
process=nowProcess;
if(process%10==0)
System.out.println("下載進度："+process);
//TODO更新文件下載進度,值存放在process變數中
}
}
in.close();
out.close();
booleanisDo=ftpClient.completePendingCommand();
if(isDo){
result=DownloadStatus.Download_From_Break_Success;
}else{
result=DownloadStatus.Download_From_Break_Failed;
}
}else{
OutputStreamout=newFileOutputStream(f);
InputStreamin=ftpClient.retrieveFileStream(newString(remote.getBytes("GBK"),"iso-8859-1"));
byte[]bytes=newbyte[1024];
longstep=lRemoteSize/100;
longprocess=0;
longlocalSize=0L;
intc;
while((c=in.read(bytes))!=-1){
out.write(bytes,0,c);
localSize+=c;
longnowProcess=localSize/step;
if(nowProcess>process){
process=nowProcess;
if(process%10==0)
System.out.println("下載進度："+process);
//TODO更新文件下載進度,值存放在process變數中
}
}
in.close();
out.close();
booleanupNewStatus=ftpClient.completePendingCommand();
if(upNewStatus){
result=DownloadStatus.Download_New_Success;
}else{
result=DownloadStatus.Download_New_Failed;
}
}
returnresult;
}
/**
*上傳文件到FTP伺服器，支持斷點續傳
*@paramlocal本地文件名稱，絕對路徑
*@paramremote遠程文件路徑，使用/home/directory1/subdirectory/file.ext按照Linux上的路徑指定方式，支持多級目錄嵌套，支持遞歸創建不存在的目錄結構
*@return上傳結果
*@throwsIOException
*/
publicUploadStatusupload(Stringlocal,Stringremote)throwsIOException{
//設置PassiveMode傳輸
ftpClient.enterLocalPassiveMode();
//設置以二進制流的方式傳輸
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
ftpClient.setControlEncoding("GBK");
UploadStatusresult;
//對遠程目錄的處理
StringremoteFileName=remote;
if(remote.contains("/")){
remoteFileName=remote.substring(remote.lastIndexOf("/")+1);
//創建伺服器遠程目錄結構，創建失敗直接返回
if(CreateDirecroty(remote,ftpClient)==UploadStatus.Create_Directory_Fail){
returnUploadStatus.Create_Directory_Fail;
}
}
//檢查遠程是否存在文件
FTPFile[]files=ftpClient.listFiles(newString(remoteFileName.getBytes("GBK"),"iso-8859-1"));
if(files.length==1){
longremoteSize=files[0].getSize();
Filef=newFile(local);
longlocalSize=f.length();
if(remoteSize==localSize){
returnUploadStatus.File_Exits;
}elseif(remoteSize>localSize){
returnUploadStatus.Remote_Bigger_Local;
}
//嘗試移動文件內讀取指針,實現斷點續傳
result=uploadFile(remoteFileName,f,ftpClient,remoteSize);
//如果斷點續傳沒有成功，則刪除伺服器上文件，重新上傳
if(result==UploadStatus.Upload_From_Break_Failed){
if(!ftpClient.deleteFile(remoteFileName)){
returnUploadStatus.Delete_Remote_Faild;
}
result=uploadFile(remoteFileName,f,ftpClient,0);
}
}else{
result=uploadFile(remoteFileName,newFile(local),ftpClient,0);
}
returnresult;
}
/**
*斷開與遠程伺服器的連接
*@throwsIOException
*/
publicvoiddisconnect()throwsIOException{
if(ftpClient.isConnected()){
ftpClient.disconnect();
}
}
/**
*遞歸創建遠程伺服器目錄
*@paramremote遠程伺服器文件絕對路徑
*@paramftpClientFTPClient對象
*@return目錄創建是否成功
*@throwsIOException
*/
(Stringremote,FTPClientftpClient)throwsIOException{
UploadStatusstatus=UploadStatus.Create_Directory_Success;
Stringdirectory=remote.substring(0,remote.lastIndexOf("/")+1);
if(!directory.equalsIgnoreCase("/")&&!ftpClient.changeWorkingDirectory(newString(directory.getBytes("GBK"),"iso-8859-1"))){
//如果遠程目錄不存在，則遞歸創建遠程伺服器目錄
intstart=0;
intend=0;
if(directory.startsWith("/")){
start=1;
}else{
start=0;
}
end=directory.indexOf("/",start);
while(true){
StringsubDirectory=newString(remote.substring(start,end).getBytes("GBK"),"iso-8859-1");
if(!ftpClient.changeWorkingDirectory(subDirectory)){
if(ftpClient.makeDirectory(subDirectory)){
ftpClient.changeWorkingDirectory(subDirectory);
}else{
System.out.println("創建目錄失敗");
returnUploadStatus.Create_Directory_Fail;
}
}
start=end+1;
end=directory.indexOf("/",start);
//檢查所有目錄是否創建完畢
if(end<=start){
break;
}
}
}
returnstatus;
}
/**
*上傳文件到伺服器,新上傳和斷點續傳
*@paramremoteFile遠程文件名，在上傳之前已經將伺服器工作目錄做了改變
*@paramlocalFile本地文件File句柄，絕對路徑
*@paramprocessStep需要顯示的處理進度步進值
*@paramftpClientFTPClient引用
*@return
*@throwsIOException
*/
publicUploadStatusuploadFile(StringremoteFile,FilelocalFile,FTPClientftpClient,longremoteSize)throwsIOException{
UploadStatusstatus;
//顯示進度的上傳
longstep=localFile.length()/100;
longprocess=0;
longlocalreadbytes=0L;
RandomAccessFileraf=newRandomAccessFile(localFile,"r");
OutputStreamout=ftpClient.appendFileStream(newString(remoteFile.getBytes("GBK"),"iso-8859-1"));
//斷點續傳
if(remoteSize>0){
ftpClient.setRestartOffset(remoteSize);
process=remoteSize/step;
raf.seek(remoteSize);
localreadbytes=remoteSize;
}
byte[]bytes=newbyte[1024];
intc;
while((c=raf.read(bytes))!=-1){
out.write(bytes,0,c);
localreadbytes+=c;
if(localreadbytes/step!=process){
process=localreadbytes/step;
System.out.println("上傳進度:"+process);
//TODO匯報上傳狀態
}
}
out.flush();
raf.close();
out.close();
booleanresult=ftpClient.completePendingCommand();
if(remoteSize>0){
status=result?UploadStatus.Upload_From_Break_Success:UploadStatus.Upload_From_Break_Failed;
}else{
status=result?UploadStatus.Upload_New_File_Success:UploadStatus.Upload_New_File_Failed;
}
returnstatus;
}
publicstaticvoidmain(String[]args){
ContinueFTPmyFtp=newContinueFTP();
try{
System.err.println(myFtp.connect("10.10.6.236",21,"5","jieyan"));
// myFtp.ftpClient.makeDirectory(newString("歌曲".getBytes("GBK"),"iso-8859-1"));
// myFtp.ftpClient.changeWorkingDirectory(newString("歌曲".getBytes("GBK"),"iso-8859-1"));
// myFtp.ftpClient.makeDirectory(newString("愛你等於愛自己".getBytes("GBK"),"iso-8859-1"));
// System.out.println(myFtp.upload("E:\yw.flv","/yw.flv",5));
// System.out.println(myFtp.upload("E:\愛你等於愛自己.mp4","/愛你等於愛自己.mp4"));
//System.out.println(myFtp.download("/愛你等於愛自己.mp4","E:\愛你等於愛自己.mp4"));
myFtp.disconnect();
}catch(IOExceptione){
System.out.println("連接FTP出錯："+e.getMessage());
}
}
}
Ⅱ java 怎麼遍歷ftp目錄下的所有目錄以及目錄下的文件名稱，取出文件的相對路徑
package com.hmilyld.exp;
import java.io.File;
public class ListFile {
private long[] count = new long[] { 0, 0 };
private File file;
private long[] listFile(String path) {
file = new File(path);
File[] f = file.listFiles();
for (int i = 0; i < f.length; i++) {
if (f[i].isDirectory()) {
count[0]++;
this.listFile(f[i].getPath());
} else {
count[1]++;
}
}
return count;
}
/**
* 得到指定路徑下的文件和文件夾數量
*
* @param path
* 要查看的路徑
* @return object[0]耗時(毫秒)<br>
* object[1]文件夾數量<br>
* object[2]文件數量
*/
public Object[] getFileCount(String path) {
long t = System.currentTimeMillis();
long[] count = this.listFile(path);
t = System.currentTimeMillis() - t;
Object[] o = new Object[] { Long.valueOf(t), Long.valueOf(count[0]),
Long.valueOf(count[1])};
return o;
}
public static void main(String[] args) {
ListFile l = new ListFile();
Object[] count = l.getFileCount("d:\\");
System.out.println(count[0]);
System.out.println(count[1]);
System.out.println(count[2]);
}
}
以前寫的一個獲取目錄下有多少文件和多少文件夾的代碼,
可以參考下.:)
Ⅲ 如何 用Java 實現 獲取FTP伺服器上的所有文件名，已知FTP的密碼，用戶名！遠程獲取！
public void ftpJdomFile(String dir) throws FileNotFoundException, IOException{
//創立根節點
// 下面這個方法是列出指定目錄下的所有文件和文件夾
List dirslist=Arrays.asList(new File(dir).listFiles());
for (Iterator i = dirslist.iterator(); i.hasNext();) {
// System.out.println(i.next()); // line 1
String s=i.next().toString();
if (new File(s).isFile()) {
System.out.println(s+"-文件");
}
if (new File(s).isDirectory()) {
System.out.println(s+"++++++++文件夾");
ftpJdomFile(s);
}
}
}
Ⅳ java怎麼在ftp上取到文件夾中文件再錄入txt文本
前段時間正好看了這個。
http://www.codejava.net/java-se/networking/ftp/java-ftp-file-download-tutorial-and-example
這個文檔非常好。有什麼看不懂的再問吧。
主要是使用org.apache.commons.net.ftp.FTPClient 和org.apache.commons.net.ftp.FTP 類。
核心代碼：
ftpClient.connect(server,port);
ftpClient.login(user,pass);
ftpClient.enterLocalPassiveMode();
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
//APPROACH#1:usingretrieveFile(String,OutputStream)
StringremoteFile1="/test/video.mp4";
FiledownloadFile1=newFile("D:/Downloads/video.mp4");
OutputStreamoutputStream1=newBufferedOutputStream(newFileOutputStream(downloadFile1));
booleansuccess=ftpClient.retrieveFile(remoteFile1,outputStream1);
outputStream1.close();
if(success){
System.out.println("File#.");
}
Ⅳ java如何獲取ftp制定目錄下所有文件集合（包括文件名稱）只要一個方法。
/**
* 取得相對於當前連接目錄的某個目錄下所有文件列表
*
* @param path
* @return
*/
public List getFileList(String path){
List list = new ArrayList();
DataInputStream dis;
try {
dis = new DataInputStream(ftpClient.nameList(this.path + path));
String filename = "";
while((filename = dis.readLine()) != null){
list.add(filename);
}
} catch (IOException e) {
e.printStackTrace();
}
return list;
}
我從這里拷來的 你不清楚看看裡面 http://hi..com/yuanhotel/item/000b6334894d11f42784f4da
滿意就採納 謝謝
Ⅵ java在瀏覽器上獲取FTP讀文件路徑
問一下，你是想做ftp上傳下載么？
首先你需要安裝一個ftp服務端程序，啟動起來，然後下載一個ftp客戶端程序，測試能不能連接，首先這一塊兒需要測試通過。
代碼ftp上傳下載
2.1 上傳代碼：
import java.io.File;
import java.io.FileInputStream;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;
public class test {
private FTPClient ftp;
/**
*
* @param path 上傳到ftp伺服器哪個路徑下
* @param addr 地址
* @param port 埠號
* @param username 用戶名
* @param password 密碼
* @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;
ftp.connect(addr,port);
ftp.login(username,password);
ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
reply = ftp.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftp.disconnect();
return result;
}
ftp.changeWorkingDirectory(path);
result = true;
return result;
}
/**
*
* @param file 上傳的文件或文件夾
* @throws Exception
*/
private void upload(File file) throws Exception{
if(file.isDirectory()){
ftp.makeDirectory(file.getName());
ftp.changeWorkingDirectory(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);
ftp.changeToParentDirectory();
}else{
File file2 = new File(file.getPath()+"\"+files[i]);
FileInputStream input = new FileInputStream(file2);
ftp.storeFile(file2.getName(), input);
input.close();
}
}
}else{
File file2 = new File(file.getPath());
FileInputStream input = new FileInputStream(file2);
ftp.storeFile(file2.getName(), input);
input.close();
}
}
public static void main(String[] args) throws Exception{
test t = new test();
t.connect("", "localhost", 21, "yhh", "yhhazr");
File file = new File("e:\uploadify");
t.upload(file);
}
}
2.2 下載代碼
這里沒有用到filter，如果用filter就可以過濾想要的文件。
public class Ftp {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Ftp ftp = new Ftp();
String hostname = "www.strawberry.com";
Integer port = 21;
String username = "username";
String password = "password";
String remote = "/c.txt";
String local = "/home/tin/LeonChen/FTP/";
try {
ftp.connect(hostname, port, username, password);
System.out.println("接收狀態："+ftp.download(remote, local));
ftp.disconnect();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private FTPClient ftpClient = new FTPClient();
/*
* * 連接到FTP伺服器
* * @param hostname 主機名
* * @param port 埠
* * @param username 用戶名
* * @param password 密碼
* * @return 是否連接成功
* * @throws IOException
*/
private boolean connect(String hostname, int port, String username,
String password) throws IOException {
ftpClient.connect(hostname, port);
ftpClient.setControlEncoding("UTF-8");
if (FTPReply.isPositiveCompletion(ftpClient.getReplyCode())) {
if (ftpClient.login(username, password)) {
return true;
}
}
disconnect();
return false;
}
/*
* 從FTP伺服器上下載文件,支持斷點續傳，上傳百分比匯報
*
* @param remote 遠程文件路徑
*
* @param local 本地文件路徑
*
* @return 上傳的狀態
*
* @throws IOException
*/
public DownloadStatus download(String remote, String local)
throws IOException {
// 設置被動模式
ftpClient.enterLocalPassiveMode();
// 設置以二進制方式傳輸
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
DownloadStatus result;
// 檢查遠程文件是否存在
FTPFile[] files = ftpClient.listFiles(new String(remote
.getBytes("UTF-8"), "iso-8859-1"));
if (files.length != 1) {
System.out.println("遠程文件不存在");
return DownloadStatus.Remote_File_Noexist;
}
long lRemoteSize = files[0].getSize();
String fildName = files[0].getName();
// 本地存在文件，進行斷點下載
File f = new File(local+fildName);
if (f.exists()) {
long localSize = f.length();
if (localSize >= lRemoteSize) {
System.out.println("本地文件大於遠程文件，下載中止");
return DownloadStatus.Local_Bigger_Remote;
}
// 進行斷點續傳，並記錄狀態
FileOutputStream out = new FileOutputStream(f, true);
ftpClient.setRestartOffset(localSize);
InputStream in = ftpClient.retrieveFileStream(new String(remote.getBytes("UTF-8"), "iso-8859-1"));
byte[] bytes = new byte[1024];
long step = lRemoteSize / 100;
long process = localSize / step;
int c;
while ((c = in.read(bytes)) != -1) {
out.write(bytes, 0, c);
localSize += c;
long nowProcess = localSize / step;
if (nowProcess > process) {
process = nowProcess;
if (process % 10 == 0)
System.out.println("下載進度：" + process);
// TODO 更新文件下載進度,值存放在process變數中
}
}
in.close();
out.close();
boolean isDo = ftpClient.completePendingCommand();
if (isDo) {
result = DownloadStatus.Download_From_Break_Success;
} else {
result = DownloadStatus.Download_From_Break_Failed;
}
} else {
OutputStream out = new FileOutputStream(f);
InputStream in = ftpClient.retrieveFileStream(new String(remote.getBytes("UTF-8"), "iso-8859-1"));
byte[] bytes = new byte[1024];
long step = lRemoteSize / 100;
long process = 0;
long localSize = 0L;
int c;
while ((c = in.read(bytes)) != -1) {
out.write(bytes, 0, c);
localSize += c;
long nowProcess = localSize / step;
if (nowProcess > process) {
process = nowProcess;
if (process % 10 == 0)
System.out.println("下載進度：" + process);
// TODO 更新文件下載進度,值存放在process變數中
}
}
in.close();
out.close();
boolean upNewStatus = ftpClient.completePendingCommand();
if (upNewStatus) {
result = DownloadStatus.Download_New_Success;
} else {
result = DownloadStatus.Download_New_Failed;
}
}
return result;
}
private void disconnect() throws IOException {
if (ftpClient.isConnected()) {
ftpClient.disconnect();
}
}
}
Ⅶ 用java怎麼獲取ftp上的文件
public class FtpClientUtil {
FtpClient ftpClient;
private String server;
private int port;
private String userName;
private String userPassword;
public FtpClientUtil(String server,int port,String userName,String userPassword)
{
this.server=server;
this.port=port;
this.userName=userName;
this.userPassword=userPassword;
}
/**
* 鏈接到伺服器
* @return
*/
public boolean open()
{
if(ftpClient!=null&&ftpClient.serverIsOpen())
return true;
try
{
ftpClient= new FtpClient();
ftpClient.openServer(server,port);
ftpClient.login(userName, userPassword);
ftpClient.binary();
return true;
}
catch(Exception e)
{
e.printStackTrace();
ftpClient=null;
return false;
}
}
public boolean cd(String dir){
boolean f = false;
try {
ftpClient.cd(dir);
} catch (IOException e) {
Logs.error(e.toString());
return f;
}
return true;
}
/**
* 上傳文件到FTP伺服器
* @param localPathAndFileName 本地文件目錄和文件名
* @param ftpFileName 上傳後的文件名
* @param ftpDirectory FTP目錄如:/path1/pathb2/,如果目錄不存在回自動創建目錄
* @throws Exception
*/
public boolean upload(String localDirectoryAndFileName,String ftpFileName,String ftpDirectory)throws Exception {
if(!open())
return false;
FileInputStream is=null;
TelnetOutputStream os=null;
try
{
char ch = ' ';
if (ftpDirectory.length() > 0)
ch = ftpDirectory.charAt(ftpDirectory.length() - 1);
for (; ch == '/' || ch == '\\'; ch = ftpDirectory.charAt(ftpDirectory.length() - 1))
ftpDirectory = ftpDirectory.substring(0, ftpDirectory.length() - 1);
int slashIndex = ftpDirectory.indexOf(47);
int backslashIndex = ftpDirectory.indexOf(92);
int index = slashIndex;
String dirall = ftpDirectory;
if (backslashIndex != -1 && (index == -1 || index > backslashIndex))
index = backslashIndex;
String directory = "";
while (index != -1) {
if (index > 0) {
String dir = dirall.substring(0, index);
directory = directory + "/" + dir;
ftpClient.sendServer("XMKD " + directory + "\r\n");
ftpClient.readServerResponse();
}
dirall = dirall.substring(index + 1);
slashIndex = dirall.indexOf(47);
backslashIndex = dirall.indexOf(92);
index = slashIndex;
if (backslashIndex != -1 && (index == -1 || index > backslashIndex))
index = backslashIndex;
}
ftpClient.sendServer("XMKD " + ftpDirectory + "\r\n");
ftpClient.readServerResponse();
os = ftpClient.put(ftpDirectory + "/"
+ ftpFileName);
File file_in = new File(localDirectoryAndFileName);
is = new FileInputStream(file_in);
byte bytes[] = new byte[1024];
int i;
while ((i = is.read(bytes)) != -1)
os.write(bytes, 0, i);
//清理垃圾
return true;
}
catch(Exception e)
{
e.printStackTrace();
return false;
}
finally
{
if (is != null)
is.close();
if (os != null)
os.close();
}
}
/**
* 從FTP伺服器上下載文件並返回下載文件長度
* @param ftpDirectoryAndFileName
* @param localDirectoryAndFileName
* @return
* @throws Exception
*/
public long download(String ftpDirectoryAndFileName,String localDirectoryAndFileName)throws Exception
{
long result = 0;
if(!open())
return result;
TelnetInputStream is = null;
FileOutputStream os = null;
try
{
is = ftpClient.get(ftpDirectoryAndFileName);
java.io.File outfile = new java.io.File(localDirectoryAndFileName);
os = new FileOutputStream(outfile);
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1)
{
os.write(bytes, 0, c);
result = result + c;
}
}
catch (Exception e)
{
throw e;
}
finally
{
if (is != null)
is.close();
if (os != null)
os.close();
}
return result;
}
/**
* 返回FTP目錄下的文件列表
* @param ftpDirectory
* @return
*/
public List<String> getFileNameList(String ftpDirectory)
{
List<String> list = new ArrayList<String>();
if(!open())
return list;
try
{
DataInputStream dis = new DataInputStream(ftpClient.nameList(ftpDirectory));
String filename = "";
while((filename=dis.readLine())!=null)
{
list.add(filename);
}
} catch (Exception e)
{
e.printStackTrace();
}
return list;
}
/**
* 刪除FTP上的文件
* @param ftpDirAndFileName
*/
public boolean deleteFile(String ftpDirAndFileName)
{
if(!open())
return false;
ftpClient.sendServer("DELE "+ftpDirAndFileName+"\r\n");
return true;
}
/**
* 刪除FTP目錄
* @param ftpDirectory
*/
public boolean deleteDirectory(String ftpDirectory)
{
if(!open())
return false;
ftpClient.sendServer("XRMD "+ftpDirectory+"\r\n");
return true;
}
/**
* 關閉鏈接
*/
public void close()
{
try
{
if(ftpClient!=null&&ftpClient.serverIsOpen())
ftpClient.closeServer();
}catch(Exception e)
{
}
}
}望採納，謝謝。
Ⅷ java FTP下載文件在代碼中如何實現知道下載完成
(KmConfigkmConfig,StringfileName,StringclientFileName,OutputStreamoutputStream){
try{
StringftpHost=kmConfig.getFtpHost();
intport=kmConfig.getFtpPort();
StringuserName=kmConfig.getFtpUser();
StringpassWord=kmConfig.getFtpPassword();
Stringpath=kmConfig.getFtpPath();
FtpClientftpClient=newFtpClient(ftpHost,port);//ftpHost為FTP伺服器的IP地址，port為FTP伺服器的登陸埠,ftpHost為String型,port為int型。
ftpClient.login(userName,passWord);//userName、passWord分別為FTP伺服器的登陸用戶名和密碼
ftpClient.binary();
ftpClient.cd(path);//path為FTP伺服器上保存上傳文件的路徑。
try{
TelnetInputStreamin=ftpClient.get(fileName);
byte[]bytes=newbyte[1024];
intcnt=0;
while((cnt=in.read(bytes,0,bytes.length))!=-1){
outputStream.write(bytes,0,cnt);
}
//##############################################
//這里文件就已經下載完了，自己理解一下
//#############################################
outputStream.close();
in.close();
}catch(Exceptione){
ftpClient.closeServer();
e.printStackTrace();
}
ftpClient.closeServer();
}catch(Exceptione){
System.out.println("下載文件失敗！請檢查系統FTP設置,並確認FTP服務啟動");
}
}