FTP通用途理

2012-09-07
FTP通用处理package com.metarnet.Execution.business.ftpimport java.io.Fileimport java.io.IOExcepti
FTP通用处理
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);}}}}
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FTP通用途理
