Apache commons-net用法的一个示例
2024-08-29 13:46:38
jar:
commons-io-2.4.jar
commons-net-3.3.jar
Code：
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.SocketException;
import java.util.List; import org.apache.commons.io.IOUtils;
import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply; import entity.Config; public class FTPUtil {
private Config _config; public FTPUtil(Config config) {
this._config = config;
} public void download(String remoteDir, List<String> remoteFileNames, String localDir) throws IOException{
FTPClient ftp = new FTPClient();
try {
connectServer(ftp);
configFTPClient(ftp);
ftp.changeWorkingDirectory(remoteDir); for (String remote : remoteFileNames) {
long begin=System.currentTimeMillis(); OutputStream local = new FileOutputStream(new File(localDir,remote));
////retrieveFile的第一个参数需要是 ISO-8859-1 编码
//new String(fileName.getBytes("GBK"),"ISO-8859-1")
boolean result = ftp.retrieveFile(remote, local); long end=System.currentTimeMillis();
System.out.println(remote+":"+(end-begin)+"ms"); System.out.println("result:"+result);
local.flush();
local.close();
} } finally {
closeFtpClient(ftp);
}
} public void upload(String remoteDir,String localDir, List<String> localFileNames) throws IOException{
FTPClient ftp = new FTPClient();
try {
connectServer(ftp);
configFTPClient(ftp);
ftp.changeWorkingDirectory(remoteDir); for (String localFileName : localFileNames) {
long begin=System.currentTimeMillis(); InputStream local=new FileInputStream(new File(localDir,localFileName));
boolean result = ftp.storeFile(localFileName,local); long end=System.currentTimeMillis();
System.out.println(localFileName+":"+(end-begin)+"ms"); System.out.println("result:"+result);
IOUtils.closeQuietly(local);
} } finally {
closeFtpClient(ftp);
} } private void closeFtpClient(FTPClient ftp) {
if (ftp.isConnected()) {
try {
ftp.logout();
ftp.disconnect();
} catch (IOException ioe) {
System.out.println("Fail to close.");
}
}
} private void configFTPClient(FTPClient ftp) throws IOException {
final int _1MB=1024;
////如果缺省该句 传输txt正常 但图片和其他格式的文件传输可能会出现未知异常
ftp.setFileType(FTP.BINARY_FILE_TYPE);
ftp.enterLocalPassiveMode();
System.out.println("ftp.getBufferSize():"+ftp.getBufferSize());
ftp.setBufferSize(_1MB);
} private void connectServer(FTPClient ftp) throws SocketException,
IOException {
int reply;
ftp.connect(_config.getHostName(), _config.getPort());
ftp.login(_config.getUsername(), _config.getPassword());
// After connection attempt, you should check the reply code to verify
// success.
reply = ftp.getReplyCode(); // 以2开头的返回值就会为真
if (!FTPReply.isPositiveCompletion(reply)) {
ftp.disconnect();
System.err.println("FTP server refused connection.");
throw new RuntimeException("FTP server refused connection:"
+ ftp.getReplyString());
} } }
package switchplat.entity; import java.util.List;
import java.util.Map; public class Config {
public String getHostName() {
return this._hostName;
}
public void setHostName(String hostName) {
this._hostName = hostName;
}
public int getPort() {
return this._port;
}
public void setPort(int port) {
this._port = port;
}
public String getUsername() {
return this._username;
}
public void setUsername(String username) {
this._username = username;
}
public String getPassword() {
return this._password;
}
public void setPassword(String password) {
this._password = password;
}
public Map<String, List<String>> getFilesToDownload() {
return this._filesToDownload;
}
public void setFilesToDownload(Map<String, List<String>> filesToDownload) {
this._filesToDownload = filesToDownload;
}
public Map<String, List<String>> getFilesToUpload() {
return this._filesToUpload;
}
public void setFilesToUpload(Map<String, List<String>> filesToUpload) {
this._filesToUpload = filesToUpload;
} private String _hostName;
private int _port=21;
private String _username;
private String _password;
private Map<String,List<String>> _filesToDownload;
private Map<String,List<String>> _filesToUpload; }
Extension Part:
private String userName = "anonymous";//匿名登录，空字符串不行
private String password = "";//随便一个地址，我胡乱写一个也可以运行的
默认情况下，FtpClient使用的是UTF_8字符集作为服务器通讯的编码集。而FTP服务器SERV-U在windowsXP上，使用GBK字符集作为服务器通讯。
// 下面三行代码必须要，而且不能改变编码格式，否则不能正确下载中文文件
ftp.setControlEncoding("GBK");
FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_NT);
conf.setServerLanguageCode("zh");
http://yijingjia.blog.sohu.com/170731845.html
http://www.open-open.com/lib/view/open1329922375281.html
/**
* 重命名文件
*
* @param oldFileName --原文件名
* @param newFileName --新文件名
*/
public static void renameFile(String oldFileName, String newFileName) {
try {
connectServer();
ftpClient.rename(oldFileName, newFileName);
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
/**
* 设置FTP客服端的配置--一般可以不设置
*
* @return ftpConfig
*/
private static FTPClientConfig getFtpConfig() {
FTPClientConfig ftpConfig = new FTPClientConfig(FTPClientConfig.SYST_UNIX);
ftpConfig.setServerLanguageCode(FTP.DEFAULT_CONTROL_ENCODING);
return ftpConfig;
}
/**
* 在服务器上创建一个文件夹
*
* @param dir 文件夹名称，不能含有特殊字符，如 \ 、/ 、: 、* 、?、 "、 <、>...
*/
public static boolean makeDirectory(String dir) {
connectServer();
boolean flag = true;
try {
// System.out.println("dir=======" dir);
flag = ftpClient.makeDirectory(dir);
if (flag) {
System.out.println( "make Directory " + dir + " succeed"); } else { System.out.println( "make Directory " + dir + " false");
}
} catch (Exception e) {
e.printStackTrace();
}
return flag;
}
/**
* 连接到服务器
*
* @return true 连接服务器成功，false 连接服务器失败
*/
public static boolean connectServer() {
boolean flag = true;
if (ftpClient == null) {
int reply;
try {
setArg(configFile);
ftpClient = new FTPClient();
ftpClient.setControlEncoding( "GBK");
ftpClient.setDefaultPort(port);
ftpClient.configure(getFtpConfig());
ftpClient.connect(ip);
ftpClient.login(userName, password);
ftpClient.setDefaultPort(port);
//System.out.print(ftpClient.getReplyString());
reply = ftpClient.getReplyCode();
ftpClient.setDataTimeout(120000); if (!FTPReply.isPositiveCompletion(reply)) {
ftpClient.disconnect();
System.err.println( "FTP server refused connection.");
// logger.debug("FTP 服务拒绝连接！");
flag = false;
}
// System.out.println(i);
i++;
} catch (SocketException e) {
flag = false;
e.printStackTrace();
System.err.println( "登录ftp服务器 " + ip + " 失败,连接超时！");
} catch (IOException e) {
flag = false;
e.printStackTrace();
System.err.println( "登录ftp服务器 " + ip + " 失败，FTP服务器无法打开！");
}
}
return flag;
}
/**
* 删除一个文件
*/
public static boolean deleteFile(String filename) {
boolean flag = true;
try {
connectServer();
flag = ftpClient.deleteFile(filename);
if (flag) {
System.out.println( "删除文件成功！");
} else {
System.out.println( "删除文件失败！");
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
return flag;
} /**
* 删除目录
*/
public static void deleteDirectory(String pathname) {
try {
connectServer();
File file = new File(pathname);
if (file.isDirectory()) {
File file2[] = file.listFiles();
} else {
deleteFile(pathname);
}
ftpClient.removeDirectory(pathname);
} catch (IOException ioe) {
ioe.printStackTrace();
}
} /**
* 删除空目录
*/
public static void deleteEmptyDirectory(String pathname) {
try {
connectServer();
ftpClient.removeDirectory(pathname);
} catch (IOException ioe) {
ioe.printStackTrace();
}
} /**
* 列出服务器上文件和目录
*
* @param regStr --匹配的正则表达式
*/
public static void listRemoteFiles(String regStr) {
connectServer();
try {
String files[] = ftpClient.listNames(regStr);
if (files == null || files.length == 0)
System.out.println( "没有任何文件!");
else {
for ( int i = 0; i < files.length; i++) {
System.out.println(files[i]);
}
}
} catch (Exception e) {
e.printStackTrace();
}
} /**
* 列出Ftp服务器上的所有文件和目录
*/
public static void listRemoteAllFiles() {
connectServer();
try {
String[] names = ftpClient.listNames();
for ( int i = 0; i < names.length; i++) {
System.out.println(names[i]);
}
} catch (Exception e) {
e.printStackTrace();
}
}
http://www.open-open.com/lib/view/open1325816800031.html
1.支持上传下载。支持断点续传
2.支持进度汇报
3.支持对于中文目录及中文文件创建的支持。
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->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 open.mis.data.DownloadStatus;
import open.mis.data.UploadStatus; 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
* @author BenZhou http://www.bt285.cn
* @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("GBK");
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");
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或是 http://www.guihua.org /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;
} public static void main(String[] args) {
ContinueFTP myFtp = new ContinueFTP();
try {
myFtp.connect("192.168.21.181", 21, "nid", "123");
// myFtp.ftpClient.makeDirectory(new String("电视剧".getBytes("GBK"),"iso-8859-1"));
// myFtp.ftpClient.changeWorkingDirectory(new String("电视剧".getBytes("GBK"),"iso-8859-1"));
// myFtp.ftpClient.makeDirectory(new String("走西口".getBytes("GBK"),"iso-8859-1"));
// System.out.println(myFtp.upload("http://www.5a520.cn /yw.flv", "/yw.flv",5));
// System.out.println(myFtp.upload("http://www.5a520.cn /走西口24.mp4","/央视走西口/新浪网/走西口24.mp4"));
System.out.println(myFtp.download("/央视走西口/新浪网/走西口24.mp4", "E:\\走西口242.mp4"));
myFtp.disconnect();
} catch (IOException e) {
System.out.println("连接FTP出错："+e.getMessage());
}
}
}
http://www.cnblogs.com/tt_mc/archive/2010/03/22/1691708.html
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