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ftp上传下载
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;
import com.ruanko.ebook.utils.DownloadStatus;
import com.ruanko.ebook.utils.UploadStatus;
/** *//**
* 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 RuankoFtpClient {
public FTPClient ftpClient = new FTPClient();
public RuankoFtpClient(){
//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{
try{
ftpClient.connect(hostname, port);
System.out.println(ftpClient.getReplyString());
ftpClient.setControlEncoding("GBK");
if(FTPReply.isPositiveCompletion(ftpClient.getReplyCode())){
if(ftpClient.login(username, password)){
return true;
}
}
disconnect();
}catch(Exception e){
e.printStackTrace();
}
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");
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
* @return 上传结果
* @throws IOException
*/
public UploadStatus upload(String local) throws IOException {
//设置PassiveMode传输
ftpClient.enterLocalPassiveMode();
UploadStatus result;
try {
//设置以二进制流的方式传输
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
ftpClient.setControlEncoding("GBK");
//对远程目录的处理
File file = new File(local);
String remoteFileName = file.getName();
if(file.isDirectory()){
//创建服务器远程目录结构，创建失败直接返回
/*if(CreateDirecroty(remoteFileName+"/", ftpClient)==UploadStatus.Create_Directory_Fail){
return UploadStatus.Create_Directory_Fail;
}*/
result = uploadFileList(file,remoteFileName,remoteFileName,1);
}else{
//本地文件名称
result = uploadToFtp(local,remoteFileName);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
throw e;
}
return result;
}
public UploadStatus uploadFileList(File file,String fileName,String remote,int level) throws IOException{
UploadStatus result = null;
File[] fileList = file.listFiles();
ftpClient.changeWorkingDirectory("/");
ftpClient.makeDirectory(new String(fileName.getBytes("GBK"),"ISO-8859-1"));
//递归遍历文件并上传
for(int i = 0;i < fileList.length; i++){
if(fileList[i].isDirectory()){
if((level+1)>2){
remote = remote+"/"+fileList[i].getParentFile().getName();
}
String temName = "";
temName = remote+"/"+fileList[i].getName()+"/";
result = uploadFileList(fileList[i],temName,remote,level+1);
}else{
String remoteFileName = fileName+fileList[i].getName();
String local = fileList[i].getAbsolutePath();
result = uploadToFtp(local,remoteFileName);
}
}
return result;
}
public UploadStatus uploadToFtp(String local,String fileName) throws IOException{
//设置PassiveMode传输
ftpClient.enterLocalPassiveMode();
UploadStatus result;
try{
//设置以二进制流的方式传输
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
ftpClient.setControlEncoding("GBK");
String remoteFileName = fileName;
String remoteDirectory = "";
if(fileName.contains("/")){
remoteFileName = fileName.substring(fileName.lastIndexOf("/")+1);
remoteDirectory = fileName.substring(0,fileName.lastIndexOf("/"));
}
//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,remoteDirectory);
//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,remoteDirectory);
}
}else {
result = uploadFile(remoteFileName, new File(local), ftpClient, 0,remoteDirectory);
}
}catch(IOException e){
e.printStackTrace();
throw e;
}
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,String remoteDirectory) throws IOException{
ftpClient.changeWorkingDirectory(new String(remoteDirectory.getBytes("GBK"),"ISO-8859-1"));
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();
//发送NOOP指令防止上传时间过长连接假死现象
ftpClient.sendNoOp();
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;
}
public static void main(String[] args) {
RuankoFtpClient myFtp = new RuankoFtpClient();
try {
// myFtp.connect("183.62.138.57", 21, "ebook_root", "ebook_root#@!");
// myFtp.upload("d:/909053ecf197432c89727531574724d3/documentFiles/S_001.pdf");
// System.out.println("上传成功！！！");
// myFtp.disconnect();
String test = "C:\\Program Files\\Apache Software Foundation\\tomcat 6.0\\webapps\\Ebook\\Document\\701c70c3a9804b3094f7056e608d32b2\\epub\\b.epub@@@@@C:\\Program Files\\Apache Software Foundation\\Tomcat 6.0\\webapps\\Ebook\\Document\\a86b97fa0bbc47a5b3aa6943689856ac\\epub\\a.epub@@@@@C:\\Program Files\\Apache Software Foundation\\Tomcat 6.0\\webapps\\Ebook\\Document\\909053ecf197432c89727531574724d3\\epub\\c.epub";
RuankoFtpClient ruankoFtpClient = new RuankoFtpClient();
ruankoFtpClient.connect("127.0.0.1", 21, "super", "super");
System.out.println(test.toString());
ruankoFtpClient.download("/epub4.epub", "F://epub/epub4.epub");
// if(test!=null){
// String[] uploads = test.toString().split("@@@@@");
// for(int m = 0;m < uploads.length; m++ ){
//
// String tmpLoad = uploads[m];
// System.out.println(ruankoFtpClient.upload(tmpLoad));
// }
// }
//释放ftp连接
ruankoFtpClient.disconnect();
} catch (IOException e) {
System.out.println("连接FTP出错："+e.getMessage());
}
}
}
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