Apache commons-net用法的一个示例
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内容图文
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;
}
publicvoid 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);
}
}
publicvoid 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);
}
}
privatevoid closeFtpClient(FTPClient ftp) {
if (ftp.isConnected()) {
try {
ftp.logout();
ftp.disconnect();
} catch (IOException ioe) {
System.out.println("Fail to close.");
}
}
}
privatevoid configFTPClient(FTPClient ftp) throws IOException {
finalint _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);
}
privatevoid 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.");
thrownew 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;
}
publicint getPort() {
returnthis._port;
}
publicvoid setPort(int port) {
this._port = port;
}
public String getUsername() {
returnthis._username;
}
publicvoid setUsername(String username) {
this._username = username;
}
public String getPassword() {
returnthis._password;
}
publicvoid setPassword(String password) {
this._password = password;
}
public Map<String, List<String>> getFilesToDownload() {
returnthis._filesToDownload;
}
publicvoid setFilesToDownload(Map<String, List<String>> filesToDownload) {
this._filesToDownload = filesToDownload;
}
public Map<String, List<String>> getFilesToUpload() {
returnthis._filesToUpload;
}
publicvoid setFilesToUpload(Map<String, List<String>> filesToUpload) {
this._filesToUpload = filesToUpload;
}
private String _hostName;
privateint _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
*/publicstaticvoid 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
*/publicstaticvoid 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
*/publicstaticvoid 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
*/publicstaticvoid 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 */publicclass 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 */publicboolean 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)){ returntrue; } } disconnect(); returnfalse; } /***//** * 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 = newbyte[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 = newbyte[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; }elseif(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 */publicvoid 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 = newbyte[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; } publicstaticvoid 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
原文：http://www.cnblogs.com/softidea/p/4269541.html
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