上传文件到ftp服务器上出错,请高手看看

[mohongweicwj]

private boolean upload(String local, String remote) throws IOException
{

boolean flag = false;
String localFile = "D:/anewfile/test.txt";
String remotefilepath = remote;
if(ftpClient.isConnected())
{


ftpClient.enterRemotePassiveMode();
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
ftpClient.changeWorkingDirectory(remotefilepath);
InputStream fis = null;
try
{
fis = new FileInputStream(localFile);
flag = ftpClient.storeFile(remotefilepath, fis);
//flag = ftpClient.storeUniqueFile(remotefilepath, fis);
fis.close();
if(flag)
{
System.out.println("上传成功！");
}else{
System.out.println("上传失败1！");
}
}catch(Exception e)
{
e.getStackTrace();
System.out.println("上传失败2！");
}
}
return flag;
}
上传文件到ftp服务器上出错，输出的是：上传失败1！，请看看是哪里出问题了？没有其他的错误提示

[土圭垚]

这是完整代码，能跑的。上午我没找到ftp的测试工具，刚刚测试通过了。

package cn.com.test;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import sun.net.TelnetInputStream;
import sun.net.ftp.FtpClient;

@SuppressWarnings("static-access")
public class FtpLogin {

	private static Log log = LogFactory.getLog(FtpLogin.class);
	private FtpClient ftp;

	private static String LOCAL_PATH = "D://";
	

	/**
	 * 登陆ftp
	 * 
	 * @param path
	 *            路径
	 * @param ip
	 *            ip地址
	 * @param port
	 *            端口
	 * @param username
	 *            用户名
	 * @param password
	 *            密码
	 */
	public void loginFtp(String path, String ip, Integer port, String username,
			String password) {

		log.info("ftp ip=" + ip);
		log.info("ftp port=" + port);
		log.info("username=" + username);

		try {
			ftp = new FtpClient(ip, port);
			ftp.login(username, password);// 登录
			ftp.cd(path);
		} catch (IOException e) {
			log.error(e.getMessage());
			e.printStackTrace();
		}
	}

	/**
	 * 下载文件
	 * 
	 * @param filename
	 *            要下载的文件名
	 * @param newfilename
	 *            新的文件名
	 * @param path
	 *            路径
	 * @param ip
	 *            ip地址
	 * @param port
	 *            端口
	 * @param username
	 *            用户名
	 * @param password
	 *            密码
	 * @throws IOException
	 */
	public synchronized void downLoadFtpFile(String filename,
			String newfilename, String path, String ip, Integer port,
			String username, String password) throws IOException {
		this.loginFtp(path, ip, port, username, password);
		TelnetInputStream is = null;
		FileOutputStream os = null;
		try {
			is = ftp.get(filename);
			File outfile = new File(LOCAL_PATH + newfilename);

			os = new FileOutputStream(outfile);
			byte[] bytes = new byte[1024];
			int c;

			while ((c = is.read(bytes)) != -1) {
				os.write(bytes, 0, c);
			}
			log.info("download file " + filename + " success");
		} catch (FileNotFoundException e) {
			log.error(e.getMessage());
			e.printStackTrace();
		} catch (IOException e) {
			log.error(e.getMessage());
			e.printStackTrace();
		} finally {
			if (is != null) {
				is.close();
			}
			if (os != null) {
				os.close();
			}
			this.closeServer();
		}
	}

	/**
	 * 关闭ftp服务
	 */
	public void closeServer() {
		if (ftp != null) {
			try {
				ftp.closeServer();
			} catch (IOException e) {
				log.error(e.getMessage());
				e.printStackTrace();
			}
		}
	}

	/**
	 * 获取ftp上所有文件的文件名
	 * 
	 * @throws IOException
	 */
	@SuppressWarnings("unchecked")
	public List getFtpFileList(String path, String ip, Integer port,
			String username, String password) throws IOException {
		List ftpFileList = new ArrayList();
		this.loginFtp(path, ip, port, username, password);
		BufferedReader reader = null;
		InputStreamReader in = null;

		try {
			in = new InputStreamReader(ftp.list());
			reader = new BufferedReader(in);
			String line = null;
			while ((line = reader.readLine()) != null) {
				int pos;
				if ((pos = line.lastIndexOf(" ")) < 0) { // 取文件名(如果文件名为空)
					continue;
				}
				String downFileName = line.substring(pos).trim();
				if ((line.charAt(0) == '-')) { // line的第一个字母是d的话，是目录，否则不是，这个是Unix的ls
												// -l的长格式输出。
					ftpFileList.add(downFileName);
				}
			}
		} catch (IOException e) {
			log.error(e.getMessage());
			e.printStackTrace();
		} finally {
			if (reader != null) {
				reader.close();
			}
			if (in != null) {
				in.close();
			}
			this.closeServer();
		}
		return ftpFileList;
	}

	public static void main(String[] args) throws Exception {
		FtpLogin f = new FtpLogin();
		f.loginFtp(".", "127.0.0.1", 21, "admin", "admin");
		List ls = f.getFtpFileList(".", "127.0.0.1", 21, "admin", "admin");
		for (int i = 0; i < ls.size(); i++) {
			String name = (String)ls.get(i);
			f.downLoadFtpFile(name, name, ".", "127.0.0.1", 21, "admin", "admin");
		}
	}
}

[土圭垚]

上传文件到ftp你必须得先登录，我想知道你的登录写在哪里的？

[土圭垚]

public void loginFtp(String path, String ip, Integer port, String username,
			String password) {
		log.info("ftp ip=" + ip);
		log.info("ftp port=" + port);
		log.info("username=" + username);

		try {
			ftp = new FtpClient(ip, port);
			ftp.login(username, password);// 登录
			ftp.cd(path);
		} catch (IOException e) {
			log.error(e.getMessage());
			String msg = "    登陆ftp:" + ip + "时发生如下错误!" + e.getMessage();
			LifeUtil.instance().mail(msg);
			e.printStackTrace();
		}
	}

这个是登录的方法，登录完了你才能下载。

登录以后再下载。。。。

public synchronized void downLoadFtpFile(String filename,
			String newfilename, String path, String ip, Integer port,
			String username, String password) throws IOException {
		this.loginFtp(path, ip, port, username, password);
		TelnetInputStream is = null;
		FileOutputStream os = null;
		try {
			is = ftp.get(filename);
			java.io.File outfile = new java.io.File(LOCAL_PATH + newfilename);

			os = new FileOutputStream(outfile);
			byte[] bytes = new byte[1024];
			int c;

			while ((c = is.read(bytes)) != -1) {
				os.write(bytes, 0, c);
			}
			log.info("download file " + filename + " success");
		} catch (FileNotFoundException e) {
			log.error(e.getMessage());
			e.printStackTrace();
		} catch (IOException e) {
			log.error(e.getMessage());
			e.printStackTrace();
		} finally {
			if (is != null) {
				is.close();
			}
			if (os != null) {
				os.close();
			}
			this.closeServer();
		}
	}

[mohongweicwj]

是这样的，我已经登陆了，这句是判断是否连接上FTP的：if(ftpClient.isConnected())，已经连接上了，能再帮看看吗？

[mohongweicwj]

是这样的，我已经登陆了，这句是判断是否连接上FTP的：if(ftpClient.isConnected())，已经连接上了，能再帮看看吗？[Quote=引用 2 楼 的回复:]
Java code
public void loginFtp(String path, String ip, Integer port, String username,
String password) {
log.info("ftp ip=" + ip);
log.info("ftp port=" + port);
……
[/Quote]

[mohongweicwj]

谢谢啦，我也找到原因了，是这句话的问题：ftpClient.enterRemotePassiveMode();
原来以为是要改成被动模式才能上传，结果弄错了，删掉就OK了，十分感谢