ftp的路径怎么设置

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 = 0i <files.lengthi++) {

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()

}

}

}

@echo off

set ymd=%Date:~0,4%%Date:~5,2%%Date:~8,2%

echo open 000.001.001.001:123456>ftp.up

echo 123>>ftp.up

echo 123>>ftp.up

echo binary>>ftp.up

echo cd ./sevp >>ftp.up

echo put "D:\Z_BEPK_%ymd%120000_P_MSP3_PL-CN_%ymd%2000_00000-07200.TXT" >>ftp.up

echo bye>>ftp.up

FTP -s:ftp.up

del ftp.up /q

可单独使用,如要加到之前复制文件的代码中那么复制文件的代码也要修改一个地方.

FTP是一种免费存储方式，可以上传任何类型的文件，但有的FTP设置了上传文件的大小，超过了就上传不了。

如果你用别人的FTP，就需要知道准确的路径，也就是这个FTP空间必须存在，否则也无法上传。

从你描述的情况看，可能是你的FTP路径不正确，选择正确的路径即可成功上传。

完整的FTP路径应该是：ftp://xxx. xxx.xxx.xxx/upload/，冒号后面是双斜杠，地址后面的均为单斜杠。

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