FTP通用处理
[java]package com.metarnet.Execution.business.ftp;
import java.io.File;
import java.io.IOException;
import java.text.ParseException;
import org.apache.log4j.Logger;
import com.enterprisedt.net.ftp.FTPClient;
import com.enterprisedt.net.ftp.FTPConnectMode;
import com.enterprisedt.net.ftp.FTPException;
import com.enterprisedt.net.ftp.FTPFile;
import com.enterprisedt.net.ftp.FTPTransferType;
import com.metarnet.Execution.Model.statics.FTP_information;
/**
*<p>ftp连接管理(使用apache commons-net-1.4.1 lib)</p>
* 闫帆
*/
public class FTP_Client {
public static final Logger logger = Logger.getLogger(FTP_Client.class);
private FTPClient ftpClient = new FTPClient();
private static FTP_Client ftp_Client;
/**
* 单例模式,每个实例只能有一个FTP上传
* @return
*/
public static FTP_Client getThis()
{
if(ftp_Client==null)
{
ftp_Client=new FTP_Client();
}
return ftp_Client;
}
/**
* 打开到FTP的连接
* @return
* @throws IOException
* @throws FTPException
* @throws Exception
*/
public boolean ConnectionFTP() throws IOException, FTPException
{
if(!ftpClient.connected())
{
try {
ftpClient.setRemoteHost(FTP_information.getThis().getFTP_server());
ftpClient.setRemotePort(FTP_information.getThis().getFTP_port());
ftpClient.setControlEncoding("GB2312");
ftpClient.connect();
ftpClient.setTimeout(1200);
ftpClient.login(FTP_information.getThis().getFTP_username(), FTP_information.getThis().getFTP_password());
ftpClient.setType(FTPTransferType.BINARY);
ftpClient.setConnectMode(FTPConnectMode.ACTIVE);
logger.debug("FTP连接成功!");
} catch (IOException e) {
logger.error("FTP_IO连接失败:",e);
throw e;
} catch (FTPException e) {
logger.error("FTP连接失败:",e);
throw e;
}
}
return ftpClient.connected();
}
/**
* <p>ftp上传文件</p>
* @param srcUrl 须上传文件
* @param targetFname 生成目标文件
* @throws Exception
*/
public String uploadFile(String srcUrl,String targetFname) throws Exception{
try {
if(ConnectionFTP())
{
if(!ftpClient.existsDirectory(FTP_information.getThis().getFTP_UP_URL()))
{
ftpClient.mkdir(FTP_information.getThis().getFTP_UP_URL());
}
if(OpenDir(FTP_information.getThis().getFTP_UP_URL()))
{
ftpClient.setType(FTPTransferType.BINARY);//设置文件类型(二进制)
return ftpClient.put(srcUrl,targetFname); //上传
}
else
{
logger.debug("未能打开目录:"+FTP_information.getThis().getFTP_UP_URL());
return "未能打开目录:"+FTP_information.getThis().getFTP_UP_URL();
}
}
else {
logger.debug("FTP服务器未打开,不能进行上传操作");
return "FTP服务器未打开,不能进行上传操作";
}
} catch (Exception e) {
logger.error("FTP上传过程中出现异常:",e);
throw new Exception("FTP上传过程中出现异常",e);
}
}
/**
* 进入需要的目录
* @return
* @throws IOException
* @throws FTPException
* @throws Exception
*/
public boolean OpenDir(String dirname)
{
try {
String[] temp=dirname.split("/");
if(temp.length>0)
{
for (String tmp : temp) {
if(ConnectionFTP())
{
ftpClient.chdir(tmp);
}
}
}
else {
if(ConnectionFTP())
{
ftpClient.chdir(dirname);
}
}
return true;
} catch (IOException e) {
return false;
} catch (FTPException e) {
return false;
}
}
/**
* 获取文件列表
* @return
* @throws FTPException
* @throws IOException
* @throws ParseException
* @throws Exception
*/
public FTPFile[] getFileNameList() throws IOException, FTPException, ParseException
{
FTPFile[] fileList= ftpClient.dirDetails(FTP_information.getThis().getFTP_UP_URL());
ftpClient.chdir(FTP_information.getThis().getFTP_UP_URL());
return fileList;
}
/**
* 下载文件夹
* @param saveDir
*/
public void Download(String saveDir)
{
try {
if(ConnectionFTP())
{
FTPFile[] list=getFileNameList();
File file=new File(saveDir);
if (!file .exists() && !file .isDirectory())
{
file .mkdir();
}
for (FTPFile FileName : list) {
if (FileName.isFile()) {
ftpClient.get(saveDir,FileName.getName());
logger.debug("下载文件:"+FileName.getName()+"完成");
}
}
logger.debug("当前所在文件夹:"+FTP_information.getThis().getFTP_UP_URL()+"下载完成");
ftpClient.quit();
}
} catch (IOException e) {
logger.error(e);
} catch (FTPException e) {
logger.error(e);
} catch (ParseException e) {
logger.error(e);
}
}
/**
* <p>删除ftp上的文件</p>
*/
public boolean removeFile(String srcFname){
if(ftpClient.connected()){
try {
if(ftpClient.existsFile(srcFname))
{
ftpClient.delete(srcFname);
}
else
{
logger.debug("不存在需要删除的文件");
}
return true;
} catch (Exception e) {
logger.error("FTP删除文件出现异常:",e);
this.closeCon();
}
}
return false;
}
/**
*<p>销毁ftp连接</p>
*/
public void closeCon(){
if(ftpClient.connected()){
try {
ftpClient.quit();
} catch (Exception e) {
logger.error("FTP断开连接失败:",e);
}
}
}
}
补充:软件开发 , Java ,