java FTP上传文件，下载文件

40m1r515h5

package test;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
public class FTPNet {
/**
* @param args
*/
public static void main(String[] args) {
/*String url = "192.168.0.210";
int port = 21;
String username = "";
String password = "";
String remotePath = "/ebsdev/baojia/";
String fileName = "baojia.txt";
String localPath = "D:/FTP";
downloadFile(url, port, username, password, remotePath, fileName, localPath);*/
try {
File file = new File(
"C:\\Documents and Settings\\qhchen\\桌面\\up_images\\");
File[] listFile = file.listFiles();
for (File f : listFile) {
FileInputStream in = new FileInputStream(f);
boolean flag = uploadFile("124.248.238.180", 21, "a328670733",
"", "/a328670733/web/images/up_images/",
f.getName(), in);
if (flag) {
System.out.println(f.getName() + "---> 上传成功！");
} else {
System.out.println(f.getName() + "---> 上传失败！");
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
/**
* Description: 向FTP服务器上传文件
* @Version1.0 Jul 27, 2008 4:31:09 PM by 崔红保（cuihongbao@d-heaven.com）创建
* @param url FTP服务器hostname
* @param port FTP服务器端口
* @param username FTP登录账号
* @param password FTP登录密码
* @param path FTP服务器保存目录
* @param filename 上传到FTP服务器上的文件名
* @param input 输入流
* @return 成功返回true，否则返回false
*/
public static boolean uploadFile(String url,int port,String username, String password, String path, String filename, InputStream input) {
boolean success = false;
FTPClient ftp = new FTPClient();
try {
int reply;
ftp.connect(url, port);//连接FTP服务器
//如果采用默认端口，可以使用ftp.connect(url)的方式直接连接FTP服务器
ftp.login(username, password);//登录
reply = ftp.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftp.disconnect();
return success;
}
ftp.changeWorkingDirectory(path);
ftp.storeFile(filename, input);
input.close();
ftp.logout();
success = true;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ftp.isConnected()) {
try {
ftp.disconnect();
} catch (IOException ioe) {
}
}
}
return success;
}
/**  
* Description: 从FTP服务器下载文件  
* @Version1.0 Jul 27, 2008 5:32:36 PM by 崔红保（cuihongbao@d-heaven.com）创建  
* @param url FTP服务器hostname  
* @param port FTP服务器端口  
* @param username FTP登录账号  
* @param password FTP登录密码  
* @param remotePath FTP服务器上的相对路径  
* @param fileName 要下载的文件名  
* @param localPath 下载后保存到本地的路径  
* @return  
*/  
public static boolean downloadFile(String url, int port, String username,
String password, String remotePath, String fileName,
String localPath) {
boolean success = false;
FTPClient ftp = new FTPClient();
try {
int reply;
// 连接FTP服务器
if (port > -1) {
ftp.connect(url, port);
} else {
ftp.connect(url);
}
ftp.login(username, password);// 登录
reply = ftp.getReplyCode();
if (!FTPReply.isPositiveCompletion(reply)) {
ftp.disconnect();
return success;
}
ftp.changeWorkingDirectory(remotePath);// 转移到FTP服务器目录
FTPFile[] fs = ftp.listFiles();
for (FTPFile ff : fs) {
if (ff.getName().equals(fileName)) {
File localFile = new File(localPath + "/" + ff.getName());
OutputStream is = new FileOutputStream(localFile);
ftp.retrieveFile(ff.getName(), is);
is.close();
}
}
ftp.logout();
success = true;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ftp.isConnected()) {
try {
ftp.disconnect();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return success;
}
}