package com.project.util;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.RandomAccessFile;
import org.apache.commons.net.PrintCommandListener;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
/**
* 支持断点续传的FTP实用类
*
* @version 0.1 实现基本断点上传下载
* @version 0.2 实现上传下载进度汇报
* @version 0.3 实现中文目录创建及中文文件创建,添加对于中文的支持
*/
public class ContinueFTP
{
public FTPClient ftpClient = new FTPClient();
public ContinueFTP()
{
// 设置将过程中使用到的命令输出到控制台
this.ftpClient.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));
}
/**
* 连接到FTP服务器
*
* @param hostname 主机名
* @param port 端口
* @param username 用户名
* @param password 密码
* @return 是否连接成功
* @throws IOException
*/
public boolean connect(String hostname, int port, String username, String password) throws IOException
{
ftpClient.connect(hostname, port);
ftpClient.setControlEncoding("UTF-8");
if (FTPReply.isPositiveCompletion(ftpClient.getReplyCode()))
{
if (ftpClient.login(username, password))
{
return true;
}
}
disconnect();
return false;
}
/**
* 从FTP服务器上下载文件,支持断点续传,上传百分比汇报
*
* @param remote 远程文件路径
* @param local 本地文件路径
* @return 上传的状态
* @throws IOException
*/
public DownloadStatus download(String remote, String local) throws IOException
{
// 设置被动模式
ftpClient.enterLocalPassiveMode();
// 设置以二进制方式传输
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
DownloadStatus result;
// 检查远程文件是否存在
FTPFile[] files = ftpClient.listFiles(new String(remote.getBytes("GBK"), "iso-8859-1"));
if (files.length != 1)
{
System.out.println("远程文件不存在"+remote);
return DownloadStatus.Remote_File_Noexist;
}
long lRemoteSize = files[0].getSize();
File f = new File(local);
// 本地存在文件,进行断点下载
if (f.exists())
{
long localSize = f.length();
// 判断本地文件大小是否大于远程文件大小
if (localSize >= lRemoteSize)
{
System.out.println("本地文件大于远程文件,下载中止");
return DownloadStatus.Local_Bigger_Remote;
}
// 进行断点续传,并记录状态
FileOutputStream out = new FileOutputStream(f, true);
ftpClient.setRestartOffset(localSize);
InputStream in = ftpClient.retrieveFileStream(new String(remote.getBytes("GBK"), "iso-8859-1"));
byte[] bytes = new byte[1024];
long step = lRemoteSize / 100;
long process = localSize / step;
int c;
while ((c = in.read(bytes)) != -1)
{
out.write(bytes, 0, c);
localSize += c;
long nowProcess = localSize / step;
if (nowProcess > process)
{
process = nowProcess;
if (process % 10 == 0)
System.out.println("下载进度:" + process);
// TODO 更新文件下载进度,值存放在process变量中
}
}
in.close();
out.close();
boolean isDo = ftpClient.completePendingCommand();
if (isDo)
{
result = DownloadStatus.Download_From_Break_Success;
}
else
{
result = DownloadStatus.Download_From_Break_Failed;
}
}
else
{
OutputStream out = new FileOutputStream(f);
InputStream in = ftpClient.retrieveFileStream(new String(remote.getBytes("GBK"), "iso-8859-1"));
byte[] bytes = new byte[1024];
long step = lRemoteSize / 100;
long process = 0;
long localSize = 0L;
int c;
while ((c = in.read(bytes)) != -1)
{
out.write(bytes, 0, c);
localSize += c;
long nowProcess = localSize / step;
if (nowProcess > process)
{
process = nowProcess;
if (process % 10 == 0)
System.out.println("下载进度:" + process);
// TODO 更新文件下载进度,值存放在process变量中
}
}
in.close();
out.close();
boolean upNewStatus = ftpClient.completePendingCommand();
if (upNewStatus)
{
result = DownloadStatus.Download_New_Success;
}
else
{
result = DownloadStatus.Download_New_Failed;
}
}
return result;
}
/**
* 上传文件到FTP服务器,支持断点续传
*
* @param local 本地文件名称,绝对路径
* @param remote 远程文件路径,使用/home/directory1/subdirectory/file.ext
* 按照Linux上的路径指定方式,支持多级目录嵌套,支持递归创建不存在的目录结构
* @return 上传结果
* @throws IOException
*/
public UploadStatus upload(String local, String remote) throws IOException
{
// 设置PassiveMode传输
ftpClient.enterLocalPassiveMode();
// 设置以二进制流的方式传输
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
ftpClient.setControlEncoding("GBK");
UploadStatus result;
// 对远程目录的处理
String remoteFileName = remote;
if (remote.contains("/"))
{
remoteFileName = remote.substring(remote.lastIndexOf("/") + 1);
// 创建服务器远程目录结构,创建失败直接返回
if (CreateDirecroty(remote, ftpClient) == UploadStatus.Create_Directory_Fail)
{
return UploadStatus.Create_Directory_Fail;
}
}
// 检查远程是否存在文件
FTPFile[] files = ftpClient.listFiles(new String(remoteFileName.getBytes("GBK"), "iso-8859-1"));
if (files.length == 1)
{
long remoteSize = files[0].getSize();
File f = new File(local);
long localSize = f.length();
if (remoteSize == localSize)
{
return UploadStatus.File_Exits;
}
else if (remoteSize > localSize)
{
return UploadStatus.Remote_Bigger_Local;
}
// 尝试移动文件内读取指针,实现断点续传
result = uploadFile(remoteFileName, f, ftpClient, remoteSize);
// 如果断点续传没有成功,则删除服务器上文件,重新上传
if (result == UploadStatus.Upload_From_Break_Failed)
{
if (!ftpClient.deleteFile(remoteFileName))
{
return UploadStatus.Delete_Remote_Faild;
}
result = uploadFile(remoteFileName, f, ftpClient, 0);
}
}
else
{
result = uploadFile(remoteFileName, new File(local), ftpClient, 0);
}
return result;
}
/**
* 断开与远程服务器的连接
*
* @throws IOException
*/
public void disconnect() throws IOException
{
if (ftpClient.isConnected())
{
ftpClient.disconnect();
}
}
/**
* 递归创建远程服务器目录
*
* @param remote 远程服务器文件绝对路径
* @param ftpClient FTPClient对象
* @return 目录创建是否成功
* @throws IOException
*/
public UploadStatus CreateDirecroty(String remote, FTPClient ftpClient) throws IOException
{
UploadStatus status = UploadStatus.Create_Directory_Success;
String directory = remote.substring(0, remote.lastIndexOf("/") + 1);
if (!directory.equalsIgnoreCase("/") && !ftpClient.changeWorkingDirectory(new String(directory.getBytes("GBK"), "iso-8859-1")))
{
// 如果远程目录不存在,则递归创建远程服务器目录
int start = 0;
int end = 0;
if (directory.startsWith("/"))
{
start = 1;
}
else
{
start = 0;
}
end = directory.indexOf("/", start);
while (true)
{
String subDirectory = new String(remote.substring(start, end).getBytes("GBK"), "iso-8859-1");
if (!ftpClient.changeWorkingDirectory(subDirectory))
{
if (ftpClient.makeDirectory(subDirectory))
{
ftpClient.changeWorkingDirectory(subDirectory);
}
else
{
System.out.println("创建目录失败");
return UploadStatus.Create_Directory_Fail;
}
}
start = end + 1;
end = directory.indexOf("/", start);
// 检查所有目录是否创建完毕
if (end <= start)
{
break;
}
}
}
return status;
}
/**
* 上传文件到服务器,新上传和断点续传
*
* @param remoteFile 远程文件名,在上传之前已经将服务器工作目录做了改变
* @param localFile 本地文件File句柄,绝对路径
* @param processStep 需要显示的处理进度步进值
* @param ftpClient FTPClient引用
* @return
* @throws IOException
*/
public UploadStatus uploadFile(String remoteFile, File localFile, FTPClient ftpClient, long remoteSize) throws IOException
{
UploadStatus status;
// 显示进度的上传
long step = localFile.length() / 100;
long process = 0;
long localreadbytes = 0L;
RandomAccessFile raf = new RandomAccessFile(localFile, "r");
OutputStream out = ftpClient.appendFileStream(new String(remoteFile.getBytes("GBK"), "iso-8859-1"));
// 断点续传
if (remoteSize > 0)
{
ftpClient.setRestartOffset(remoteSize);
process = remoteSize / step;
raf.seek(remoteSize);
localreadbytes = remoteSize;
}
byte[] bytes = new byte[1024];
int c;
while ((c = raf.read(bytes)) != -1)
{
out.write(bytes, 0, c);
localreadbytes += c;
if (localreadbytes / step != process)
{
process = localreadbytes / step;
System.out.println("上传进度:" + process);
// TODO 汇报上传状态
}
}
out.flush();
raf.close();
out.close();
boolean result = ftpClient.completePendingCommand();
if (remoteSize > 0)
{
status = result ? UploadStatus.Upload_From_Break_Success : UploadStatus.Upload_From_Break_Failed;
}
else
{
status = result ? UploadStatus.Upload_New_File_Success : UploadStatus.Upload_New_File_Failed;
}
return status;
}
/**
* 从FTP服务器上下载文件,支持断点续传,上传百分比汇报
*
* @param remote 远程文件路径
* @param local 本地文件路径
* @return 上传的状态
* @throws IOException
*/
public DownloadStatus downloadAll(String remote,String LocalPath,ContinueFTP myFtp) throws IOException
{
boolean flag;
// 设置被动模式
ftpClient.enterLocalPassiveMode();
// 设置以二进制方式传输
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
DownloadStatus result;
// 检查远程文件是否存在
FTPFile[] files = ftpClient.listFiles(new String(remote.getBytes("GBK"), "iso-8859-1"));
if (files.length < 1)
{
System.out.println("远程文件不存在:"+remote);
return DownloadStatus.Remote_File_Noexist;
}
for (int i = 0; i < files.length; i++)
{
System.out.println(files[i].getName());
myFtp.download(remote + files[i].getName(), LocalPath + files[i].getName());
flag = ftpClient.deleteFile(remote + files[i].getName());
System.out.println("删除文件"+flag);
}
return DownloadStatus.Download_New_Success;
}
/* *//**
*
* 【功能描述:删除ftp 上指定的文件】 【功能详细描述:功能详细描述】
*
* @see 【类、类#方法、类#成员】
* @param ftpPath ftp上的文件路径
* @return true 成功,false,失败
*/
/*
* public static boolean deleteDir(String ftpPath){ FTPClient ftpClient =
* new FTPClient(); boolean flag = false; try { ftpClient = getFTPClient();
* ftpClient
* .setControlKeepAliveTimeout(ConfigReader.getInt("ftp.active.time", 600));
* ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE); flag =
* iterateDelete(ftpClient,ftpPath); ftpClient.disconnect(); } catch
* (IOException e) { // TODO 异常处理块 e.printStackTrace(); } return flag; }
*/
/**
*
* 【功能描述:删除文件夹】 【功能详细描述:功能详细描述】
*
* @see 【类、类#方法、类#成员】
* @param ftpClient
* @param ftpPath 文件夹的地址
* @return true 表似成功,false 失败
* @throws IOException
*/
public static boolean iterateDelete(FTPClient ftpClient, String ftpPath) throws IOException
{
FTPFile[] files = ftpClient.listFiles(ftpPath);
boolean flag = false;
for (FTPFile f : files)
{
String path = ftpPath + File.separator + f.getName();
if (f.isFile())
{
// 是文件就删除文件
ftpClient.deleteFile(path);
}
else if (f.isDirectory())
{
iterateDelete(ftpClient, path);
}
}
// 每次删除文件夹以后就去查看该文件夹下面是否还有文件,没有就删除该空文件夹
FTPFile[] files2 = ftpClient.listFiles(ftpPath);
if (files2.length == 0)
{
flag = ftpClient.removeDirectory(ftpPath);
}
else
{
flag = false;
}
return flag;
}
/*
*//**
*
* 【功能描述:删除文件】 【功能详细描述:功能详细描述】
*
* @see 【类、类#方法、类#成员】
* @param filePath
* @return
*/
/*
* public static boolean deleteFile(String filePath) { boolean flag = false;
* try { FTPClient ftpClient = getFTPClient(); flag =
* ftpClient.deleteFile(filePath); } catch (IOException e) { // TODO 异常处理块
* e.printStackTrace(); } return flag;
*
* }
*/
public static void main(String[] args)
{
ContinueFTP myFtp = new ContinueFTP();
try
{
myFtp.connect("123.56.243.100", 21, "test", "123456");
// myFtp.ftpClient.makeDirectory(new
// String("歌曲".getBytes("GBK"),"iso-8859-1"));
// myFtp.ftpClient.changeWorkingDirectory(new
// String("歌曲".getBytes("GBK"),"iso-8859-1"));
// System.out.println(myFtp.upload("E:\\yw.flv", "/yw.flv",5));
// System.out.println(myFtp.upload("D:\\SC144110372048122.xml","/send/SC144110372048122.xml"));
// System.out.println(myFtp.upload("D:\\wms\\receive\\00001.xml","/receive/00001.xml"));
System.out.println(myFtp.downloadAll("/request/", "D:\\test\\", myFtp));
try
{
// Document doc = XmlManager.parse("D:\\SC144110372048122.xml");
// DocumentBuilderFactory dbf =
// DocumentBuilderFactory.newInstance();
// DocumentBuilder db = dbf.newDocumentBuilder();
// Document domTree = db.parse(new
// File("D:\\SC144110372048122.xml"));
}
catch (Exception e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
myFtp.disconnect();
}
catch (IOException e)
{
System.out.println("连接FTP出错:" + e.getMessage());
}
}
}
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
public enum DownloadStatus
{
Remote_File_Noexist, // 远程文件不存在
Local_Bigger_Remote, // 本地文件大于远程文件
Download_From_Break_Success, // 断点下载文件成功
Download_From_Break_Failed, // 断点下载文件失败
Download_New_Success, // 全新下载文件成功
Download_New_Failed, // 全新下载文件失败
Delete_File_Success, // 删除文件成功
Delete_File_Failed; // 删除文件失败
}