用JAVA获取FTP文件列表
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如何用java获取FTP的文件列表?
drw-rw-rw- 1 user group 0 Feb 1 10:17 ..
-rw-rw-rw- 1 user group 1841 Jan 21 17:51 index.html
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有没有别的方法?而且,这个获取的也不全。我那FTP里面还有一个.exe的文件,这里没有显示。我只想要一个显示文件名的就可以了,各位大哥大姐!
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;
/**
* 链接到服务器
* @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;
/**
* 上传文件到FTP服务器
* @param localPathAndFileName 本地文件目录和文件名
* @param ftpFileName 上传后的文件名
* @param ftpDirectory FTP目录如:/path1/pathb2/,如果目录不存在回自动创建目录
* @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();
/**
* 从FTP服务器上下载文件并返回下载文件长度
* @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目录下的文件列表
* @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;
/**
* 删除FTP上的文件
* @param ftpDirAndFileName
*/
public boolean deleteFile(String ftpDirAndFileName)
if(!open())
return false;
ftpClient.sendServer("DELE "+ftpDirAndFileName+"\r\n");
return true;
/**
* 删除FTP目录
* @param ftpDirectory
*/
public boolean deleteDirectory(String ftpDirectory)
if(!open())
return false;
ftpClient.sendServer("XRMD "+ftpDirectory+"\r\n");
return true;
/**
* 关闭链接
*/
public void close()
try
if(ftpClient!=null&&ftpClient.serverIsOpen())
ftpClient.closeServer();
catch(Exception e)
参考技术A 学习一下ftp协议,然后用socket来模拟就可以了 参考技术B java 还没学习到!~
java在浏览器上获取FTP读文件路径
如何用java在浏览器点击上传文件,从FTP服务器上选择上传的文件,获取FTP上文件的路径,如何实现,有什么插件可以用?
问一下,你是想做ftp上传下载么?
首先你需要安装一个ftp服务端程序,启动起来,然后下载一个ftp客户端程序,测试能不能连接,首先这一块儿需要测试通过。
代码ftp上传下载
2.1 上传代码:
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;
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 上传的文件或文件夹
* @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 下载代码
这里没有用到filter,如果用filter就可以过滤想要的文件。
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("接收状态:"+ftp.download(remote, local));
ftp.disconnect();
catch (IOException e)
// TODO Auto-generated catch block
e.printStackTrace();
private FTPClient ftpClient = new FTPClient();
/*
* * 连接到FTP服务器
* * @param hostname 主机名
* * @param port 端口
* * @param username 用户名
* * @param password 密码
* * @return 是否连接成功
* * @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;
/*
* 从FTP服务器上下载文件,支持断点续传,上传百分比汇报
*
* @param remote 远程文件路径
*
* @param local 本地文件路径
*
* @return 上传的状态
*
* @throws IOException
*/
public DownloadStatus download(String remote, String local)
throws IOException
// 设置被动模式
ftpClient.enterLocalPassiveMode();
// 设置以二进制方式传输
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
DownloadStatus result;
// 检查远程文件是否存在
FTPFile[] files = ftpClient.listFiles(new String(remote
.getBytes("UTF-8"), "iso-8859-1"));
if (files.length != 1)
System.out.println("远程文件不存在");
return DownloadStatus.Remote_File_Noexist;
long lRemoteSize = files[0].getSize();
String fildName = files[0].getName();
// 本地存在文件,进行断点下载
File f = new File(local+fildName);
if (f.exists())
long localSize = f.length();
if (localSize >= lRemoteSize)
System.out.println("本地文件大于远程文件,下载中止");
return DownloadStatus.Local_Bigger_Remote;
// 进行断点续传,并记录状态
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("下载进度:" + process);
// TODO 更新文件下载进度,值存放在process变量中
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("下载进度:" + process);
// TODO 更新文件下载进度,值存放在process变量中
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();
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