使用sun.net.ftp下载、上传文件完整版（转）

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package com.northking.dataManager.util;
import sun.net.ftp.*;
import sun.net.*;
import java.io.*;
/**
* 使用sun.net.ftp工具包进行ftp上传下载
* @author maochangming
* @date 2008-6-20  13:09:29
* @description:
*/
public class FtpTool {
String ip;
int port;
String user;
String pwd;
String remotePath;
String localPath;
FtpClient ftpClient;
/**
* 连接ftp服务器
* @param ip
* @param port
* @param user
* @param pwd
* @return
* @throws Exception
*/
public boolean connectServer(String ip, int port, String user, String pwd)
throws Exception {
boolean isSuccess = false;
try {
ftpClient = new FtpClient();
ftpClient.openServer(ip, port);
ftpClient.login(user, pwd);
isSuccess = true;
} catch (Exception ex) {
throw new Exception("Connect ftp server error:" + ex.getMessage());
}
return isSuccess;
}
/**
* 下载文件
* @param remotePath
* @param localPath
* @param filename
* @throws Exception
*/
public void downloadFile(String remotePath,String localPath, String filename) throws Exception {
try {
if (connectServer(getIp(), getPort(), getUser(), getPwd())) {
if (remotePath.length() != 0)
ftpClient.cd(remotePath);
ftpClient.binary();
TelnetInputStream is = ftpClient.get(filename);
File file_out = new File(localPath + File.separator + filename);
FileOutputStream os = new FileOutputStream(file_out);
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
os.write(bytes, 0, c);
}
is.close();
os.close();
ftpClient.closeServer();
}
} catch (Exception ex) {
throw new Exception("ftp download file error:" + ex.getMessage());
}
}
/**
* 上传文件
* @param remotePath
* @param localPath
* @param filename
* @throws Exception
*/
public void uploadFile(String remotePath,String localPath, String filename) throws Exception {
try {
if (connectServer(getIp(), getPort(), getUser(), getPwd())) {
if (remotePath.length() != 0)
ftpClient.cd(remotePath);
ftpClient.binary();
TelnetOutputStream os = ftpClient.put(filename);
File file_in = new File(localPath + File.separator + filename);
FileInputStream is = new FileInputStream(file_in);
byte[] bytes = new byte[1024];
int c;
while ((c = is.read(bytes)) != -1) {
os.write(bytes, 0, c);
}
is.close();
os.close();
ftpClient.closeServer();
}
} catch (Exception ex) {
throw new Exception("ftp upload file error:" + ex.getMessage());
}
}
/**
* @return
*/
public String getIp() {
return ip;
}
/**
* @return
*/
public int getPort() {
return port;
}
/**
* @return
*/
public String getPwd() {
return pwd;
}
/**
* @return
*/
public String getUser() {
return user;
}
/**
* @param string
*/
public void setIp(String string) {
ip = string;
}
/**
* @param i
*/
public void setPort(int i) {
port = i;
}
/**
* @param string
*/
public void setPwd(String string) {
pwd = string;
}
/**
* @param string
*/
public void setUser(String string) {
user = string;
}
/**
* @return
*/
public FtpClient getFtpClient() {
return ftpClient;
}
/**
* @param client
*/
public void setFtpClient(FtpClient client) {
ftpClient = client;
}
/**
* @return
*/
public String getRemotePath() {
return remotePath;
}
/**
* @param string
*/
public void setRemotePath(String string) {
remotePath = string;
}
/**
* @return
*/
public String getLocalPath() {
return localPath;
}
/**
* @param string
*/
public void setLocalPath(String string) {
localPath = string;
}
}

　　Junit测试类
　　


package com.northking.dataManager.dataimport.parse.test;
import com.northking.dataManager.util.FtpTool;
import junit.framework.TestCase;
/**
* @author maochangming
* @date 2008-6-20  13:09:11
* @description:
*/
public class FtpToolTest extends TestCase {
FtpTool ftpTool;
/**
* Constructor for FtpToolTest.
* @param arg0
*/
public FtpToolTest(String arg0) {
super(arg0);
}
public static void main(String[] args) {
junit.textui.TestRunner.run(FtpToolTest.class);
}
public void testDownLoadFile()throws Exception{
ftpTool.downloadFile(ftpTool.getRemotePath(),"c:/downloads","JBFImgMng.CAB");
}
/*
* @see TestCase#setUp()
*/
protected void setUp() throws Exception {
ftpTool = new FtpTool();
ftpTool.setIp("10.164.12.70");
ftpTool.setPort(2100);
ftpTool.setUser("share");
ftpTool.setPwd("share");
ftpTool.setRemotePath("/paeams");
super.setUp();
}
/*
* @see TestCase#tearDown()
*/
protected void tearDown() throws Exception {
super.tearDown();
}
}