java的ftp上传代码 java操作ftp上的文件

如何用java代码实现ftp文件上传

import java.io.File;

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import java.io.FileInputStream;

import org.apache.commons.net.;

import org.apache.commons.net.;

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;

;

;

;

reply = ;

if (!FTPReply.isPositiveCompletion(reply)) {

;

return result;

}

;

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()){

(file.getName());

(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);

;

}else{

File file2 = new File(file.getPath()+"\\"+files[i]);

java FTP怎么上传文件

上传下载的代码

import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import sun.net.TelnetOutputStream;

import sun.net.TelnetInputStream;

import sun.net.;

public class download {

String localfilename;

String remotefilename;

FtpClient ftpClient;

// server：服务器名字

// user：用户名

// password：密码

// path：服务器上的路径

public void connectServer(String ip, int port,String user

, String password,String path) {

try {

ftpClient = new FtpClient();

ftpClient.openServer(ip,port);

ftpClient.login(user, password);

System.out.println("login success!");

if (path.length() != 0) ftpClient.cd(path);

ftpClient.binary();

} catch (IOException ex) {

System.out.println("not login");

System.out.println(ex);

}

}

public void closeConnect() {

try {

ftpClient.closeServer();

System.out.println("disconnect success");

} catch (IOException ex) {

System.out.println("not disconnect");

System.out.println(ex);

}

}

public void upload() {

this.localfilename = "D://test2//test.txt";

this.remotefilename = "test.txt";

try {

TelnetOutputStream os = ftpClient.put(this.remotefilename);

java.io.File file_in = new java.io.File(this.localfilename);

FileInputStream is = new FileInputStream(file_in);

byte[] bytes = new byte[1024];

int c;

while ((c = is.read(bytes)) != -1) {

os.write(bytes, 0, c);

}

System.out.println("upload success");

is.close();

os.close();

} catch (IOException ex) {

System.out.println("not upload");

System.out.println(ex);

}

}

public void download() {

try {

TelnetInputStream is = ftpClient.get(this.remotefilename);

java.io.File file_in = new java.io.File(this.localfilename);

FileOutputStream os = new FileOutputStream(file_in);

byte[] bytes = new byte[1024];

int c;

while ((c = is.read(bytes)) != -1) {

// System.out.println((char)is.read());

// System.out.println(file_in);

os.write(bytes, 0, c);

}

System.out.println("download success");

os.close();

is.close();

} catch (IOException ex) {

System.out.println("not download");

System.out.println(ex);

}

}

public void download(String remotePath,String remoteFile,String localFile) {

try {

if (remotePath.length() != 0) ftpClient.cd(remotePath);

TelnetInputStream is = ftpClient.get(remoteFile);

java.io.File file_in = new java.io.File(localFile);

FileOutputStream os = new FileOutputStream(file_in);

byte[] bytes = new byte[1024];

int c;

while ((c = is.read(bytes)) != -1) {

// System.out.println((char)is.read());

// System.out.println(file_in);

os.write(bytes, 0, c);

}

System.out.println("download success");

os.close();

is.close();

} catch (IOException ex) {

System.out.println("not download");

System.out.println(ex);

}

}

public void download(String remoteFile,String localFile) {

try {

TelnetInputStream is = ftpClient.get(remoteFile);

java.io.File file_in = new java.io.File(localFile);

FileOutputStream os = new FileOutputStream(file_in);

byte[] bytes = new byte[1024];

int c;

while ((c = is.read(bytes)) != -1) {

// System.out.println((char)is.read());

// System.out.println(file_in);

os.write(bytes, 0, c);

}

System.out.println("download success");

os.close();

is.close();

} catch (IOException ex) {

System.out.println("not download");

System.out.println(ex);

}

}

public static void main(String agrs[]) {

String filepath[] = { "/callcenter/index.jsp", "/callcenter/ip.txt",

"/callcenter/mainframe/image/processing_bar_2.gif",

"/callcenter/mainframe/image/logo_01.jpg" };

String localfilepath[] = { "C:\\FTP_Test\\index.jsp",

"C:\\FTP_Test\\ip.txt", "C:\\FTP_Test\\processing_bar_2.gif",

"C:\\FTP_Test\\logo_01.jpg" };

download fu = new download();

fu.connectServer("172.16.1.66",22, "web_test", "123456","/callcenter");

for(int i=0;ifilepath.length;i++){

fu.download(filepath[i],localfilepath[i]);

}

//fu.upload();

//fu.download();

fu.closeConnect();

}

}

java 实现ftp上传如何创建文件夹？

准备条件：java实现ftp上传用到了commons-net-3.3.jar包

首先建立ftphost连接

public boolean connect(String path, String addr, int port, String username, String password) {

try {

//FTPClient ftp = new FTPHTTPClient(addr, port, username, password);

ftp = new FTPClient();

int reply;

;

System.out.println("连接到：" + addr + ":" + port);

System.out.print();

reply = ;

if (!FTPReply.isPositiveCompletion(reply)) {

;

System.err.println("FTP目标服务器积极拒绝.");

System.exit(1);

return false;

}else{

(username, password);

;

;

;

System.out.println("已连接：" + addr + ":" + port);

return true;

}

} catch (Exception ex) {

ex.printStackTrace();

System.out.println(ex.getMessage());

return false;

}

}

然后再利用ftpclient的makeDirectory方法创建文件夹

public void createDir(String dirname){

try{

;

System.out.println("在目标服务器上成功建立了文件夹: " + dirname);

}catch(Exception ex){

System.out.println(ex.getMessage());

}

}

断开host连接

public void disconnect(){

try {

;

} catch (IOException e) {

e.printStackTrace();

}

}

最后是程序的调用方法

public static void main(String[] args) {

FtpUploadTest ftpupload = new FtpUploadTest();

if(ftpupload.connect("", "172.39.8.x", 20, "administrator", "abc@123")){

ftpupload.createDir("/UPLOAD");

ftpupload.disconnect();

}

}