ftp 文件上传 java

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.SocketException;
import org.apache.commons.net.ftp.FTPClient;




public class FtpTest {

public FtpTest(String userName,String password,String ip){
this.userName = userName;
this.password = password;
this.ip = ip;
}

/**
* 上传文件
* 
* @param File f 要上传的文件
* @param String uploadDir 上传文件的路径
* 
* @return boolean b 上传结果
* */
public boolean putFile(File f,String uploadDir) {
InputStream instream = null;
boolean result = false;
try{
try{
ftpClient.changeWorkingDirectory(uploadDir);
instream = new BufferedInputStream(new FileInputStream(f));
result = ftpClient.storeFile(f.getName(), instream);
}finally{
if(instream!=null){
instream.close();
}
}
}catch(IOException e){
e.printStackTrace();
}

return result;
}

/**
* 从ftp服务器下载文件
* 
* @param File f 要获取的ftp服务器上的文件
* @param String localPath 本地存放的路径
* 
* @return boolean 文件下载是否成功
* */
public boolean getFile(File f  , String localPath){
OutputStream outStream = null;
boolean result = false;
try{
try{
outStream = new BufferedOutputStream(new FileOutputStream(new File(localPath)));
String path = f.getPath();
path = path.replaceAll("\\\\", "/");
String filepath = path.substring(0, path.lastIndexOf("/")+1)+"";
String fileName = path.substring(path.lastIndexOf("/")+1)+"";
boolean b = ftpClient.changeWorkingDirectory(filepath);
if(b){
result = ftpClient.retrieveFile(fileName, outStream);
}
}finally{
if(outStream != null){
outStream.close();
}
}
}catch(IOException e){
e.printStackTrace();
}
return result;
}
/**
* 获取ftp链接
* 
* @return ftpClient
* */
public FTPClient getFTPClient(){

try {
ftpClient = new FTPClient();


ftpClient.connect(ip);
ftpClient.login(userName, password);
} catch (SocketException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return ftpClient;
}

/**
*  关闭ftpClient链接
*  
*  @param FTPClient 要关闭的ftpClient对象
*  
* */
public void closeFTPClient(FTPClient ftpClient){
try {
try{
ftpClient.logout();
}finally{
ftpClient.disconnect();
}
} catch (IOException e) {
e.printStackTrace();
}
}

/*ftp用户名*/
private String userName;
/*ftp密码*/
private String password;
/*ftp服务器ip*/
private String ip;
private FTPClient ftpClient;
}