java实现ftp上传、修改、删除文件

public class FtpUtil {
	
	private static Logger logger = Logger.getLogger(FtpUtil.class);
	private static FTPClient CLIENT = null;
	private static String LOCAL_CHARSET = "GBK";
	private static String SERVER_CHARSET = "ISO-8859-1";
	private static final String FTP_HOST = ConfigureUtil.getString("ftp.host");
	private static final int FTP_PORT = ConfigureUtil.getInt("ftp.post");
	private static final String FTP_USERNAME = ConfigureUtil.getString("ftp.username");
	private static final String FTP_PASSWORD = ConfigureUtil.getString("ftp.password");
	
    /**
     * 获取FTPClient对象
     *
     * @param ftpHost     FTP主机服务器
     * @param ftpPassword FTP 登录密码
     * @param ftpUserName FTP登录用户名
     * @param ftpPort     FTP端口 默认为21
     * @return
     */
    public static void getFTPClient() {
        try {
        	CLIENT = new FTPClient();
        	CLIENT.connect(FTP_HOST, FTP_PORT);// 连接FTP服务器
        	CLIENT.login(FTP_USERNAME, FTP_PASSWORD);// 登陆FTP服务器
            if (!FTPReply.isPositiveCompletion(CLIENT.getReplyCode())) {
            	logger.error("未连接到FTP，用户名或密码错误。");
                CLIENT.disconnect();
            } else {
            	logger.info("FTP连接成功。");
            	int reply;
                reply = CLIENT.getReplyCode();
                if (!FTPReply.isPositiveCompletion(reply)) {
                	CLIENT.disconnect();
                }
                
                if (FTPReply.isPositiveCompletion(CLIENT.sendCommand(
    					"OPTS UTF8", "ON"))) {// 开启服务器对UTF-8的支持，如果服务器支持就用UTF-8编码，否则就使用本地编码（GBK）.
    				LOCAL_CHARSET = "UTF-8";
    			}
                CLIENT.setControlEncoding(LOCAL_CHARSET);
                CLIENT.setFileType(FTP.BINARY_FILE_TYPE);
                CLIENT.enterLocalPassiveMode();
            }
        } catch (SocketException e) {
            e.printStackTrace();
            logger.error("FTP的IP地址可能错误，请正确配置。");
        } catch (IOException e) {
            e.printStackTrace();
            logger.error("FTP的端口错误,请正确配置。");
        }
    }

    /*
     * 从FTP服务器下载文件
     *
     * @param ftpPath FTP服务器中文件所在路径 格式： ftptest/aa
     * @param localPath 下载到本地的位置 格式：H:/download
     * @param fileName 文件名称
     */
    @SuppressWarnings("static-access")
	public static boolean downloadFtpFile(String ftpPath, String localPath,String fileName) {
        boolean isAppend = false;
    	try {
        	getFTPClient();
            CLIENT.setFileTransferMode(CLIENT.STREAM_TRANSFER_MODE);
            ftpPath = new String(ftpPath.getBytes(LOCAL_CHARSET),SERVER_CHARSET);
            CLIENT.changeWorkingDirectory(ftpPath);
            File localFile = new File(localPath + File.separatorChar + fileName);
            if(!new File(localPath).exists()){
            	new File(localPath).mkdirs();
            }
            if(localFile.exists()){
            	return true;
            }
            OutputStream os = new FileOutputStream(localFile);
            isAppend =  CLIENT.retrieveFile(new String(fileName.getBytes(LOCAL_CHARSET),SERVER_CHARSET), os); 
            os.close();
            CLIENT.logout();
            return isAppend;

        } catch (FileNotFoundException e) {
        	logger.error("没有找到" + ftpPath + "文件");
            e.printStackTrace();
        } catch (SocketException e) {
        	logger.error("连接FTP失败.");
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
            logger.error("文件读取错误。");
            e.printStackTrace();
        }
    	return isAppend;
    }

    /**
     * Description: 向FTP服务器上传文件
     * @param ftpPath  FTP服务器中文件所在路径 格式： ftptest/aa
     * @param fileName ftp文件名称
     * @param input 文件流
     * @return 成功返回true，否则返回false
     */
    public static boolean uploadFile(String ftpPath,String fileName,InputStream input) {
        boolean success = false;
        try {
        	getFTPClient();
            ftpPath = new String(ftpPath.getBytes(LOCAL_CHARSET),SERVER_CHARSET);
            CLIENT.makeDirectory(ftpPath);
            CLIENT.changeWorkingDirectory(ftpPath);
            fileName = new String(fileName.getBytes(LOCAL_CHARSET),SERVER_CHARSET);
            success = CLIENT.storeFile(fileName, input);
            logger.info("上传成功");
            input.close();
            CLIENT.logout();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (CLIENT.isConnected()) {
                try {
                	CLIENT.disconnect();
                } catch (IOException ioe) {
                }
            }
        }
        return success;
    }
    
    /**
     * Description: 向FTP服务器上传图片
     * @param ftpPath  FTP服务器中文件所在路径,把路径按照级别放到数组中
     * @param fileName ftp文件名称
     * @param input 文件流
     * @return 成功返回true，否则返回false
     */
    public static boolean uploadFile(String[] ftpPath,String fileName,InputStream input) {
        boolean success = false;
        try {
        	getFTPClient();
        	String path = "";
        	for(int i=0;ipara){
    	boolean isAppend = false;
    	try {
    		String path = para.get("path")+"";
    		String name = para.get("name")+"";
    		getFTPClient();
            path = new String(path.getBytes(LOCAL_CHARSET),SERVER_CHARSET);
            CLIENT.changeWorkingDirectory(path);
            name = new String(name.getBytes(LOCAL_CHARSET),SERVER_CHARSET);
            CLIENT.dele(name);
            logger.info("删除成功");
            CLIENT.logout();
            isAppend = true;
		} catch (Exception e) {
			 e.printStackTrace();
		}finally {
            if (CLIENT.isConnected()) {
                try {
                	CLIENT.disconnect();
                } catch (IOException ioe) {
                }
            }
        }
    	return isAppend;
    }
    
    /**
     * @MethodName  deleteFolder
     * @Description 删除ftp文件夹
     * @param para
     * @return 
     * 
     */
    public static boolean deleteFolder(String folder){
    	boolean isAppend = false;
    	try {
    		getFTPClient();
    		folder = new String(folder.getBytes(LOCAL_CHARSET),SERVER_CHARSET);
    		isAppend = CLIENT.removeDirectory(folder);
            logger.info("删除成功");
            CLIENT.logout();
		} catch (Exception e) {
			 e.printStackTrace();
		}finally {
            if (CLIENT.isConnected()) {
                try {
                	CLIENT.disconnect();
                } catch (IOException ioe) {
                }
            }
        }
    	return isAppend;
    }
    
    /**
     * @MethodName  reName
     * @Description 修改文件名称
     * @param para
     * @return 
     * 
     */
    public static boolean reName(Mappara){
    	boolean isAppend = false;
    	try {
    		String path = para.get("path")+"";
    		String name = para.get("name")+"";
    		getFTPClient();
            path = new String(path.getBytes(LOCAL_CHARSET),SERVER_CHARSET);
            name = new String(name.getBytes(LOCAL_CHARSET),SERVER_CHARSET);
            isAppend = CLIENT.rename(path, name);
            logger.info("修改文件夹共成功");
            CLIENT.logout();
		} catch (Exception e) {
			 e.printStackTrace();
		}finally {
            if (CLIENT.isConnected()) {
                try {
                	CLIENT.disconnect();
                } catch (IOException ioe) {
                }
            }
        }
    	return isAppend;
    }

}