使用edtftpj-***.jar上传下载中文问题的解决方案和注意点

FileTransferClient ftpClient = null;
        try {
            ftpClient = new FileTransferClient();
            // set remote host
            ftpClient.setRemoteHost(FTPAddress);
            ftpClient.setRemotePort(portInt);
            ftpClient.setUserName(FTPAccount);
            ftpClient.setPassword(FTPPwd);
            //注意：下面红色的部分必须写在connect之前，因为做connect的时候会到ftpClient对象的设置参数进行赋值。
            ftpClient.getAdvancedSettings().setTransferBufferSize(2048);
            ftpClient.getAdvancedSettings().setTransferNotifyInterval(5000);
            ftpClient.getAdvancedSettings().setControlEncoding("GBK");
            ftpClient.connect();
            ftpClient.changeDirectory("/");
            ftpClient.setDetectContentType(true);
            ftpClient.setContentType(FTPTransferType.BINARY);
            String[] names = ftpClient.directoryNameList();
            for (String oName : names) {
                log.debug("file is:" + oName);
            }
            for (String kngAttachName : kngAttachs) {
                int i = kngAttachName.lastIndexOf(".");
                // 附件列表路径中不存在"."
                if (i != -1) {
                    // 获取附件文件类型
                    String fileType = kngAttachName.substring(i + 1, kngAttachName.length());
                    String localFileName = this.getCSPId() + "." + fileType;
                    File file = new File(fileServerPath);
                    if (!file.exists()) {
                        file.mkdirs();
                    }
                    String path = fileServerPath + "/" + localFileName;
                    File file1 = new File(path);
                    file1.createNewFile();
                    FileOutputStream fos = new FileOutputStream(file1);
                    if (log.isDebugEnabled()) {
                        log.debug("Local filepath is:" + path);
                        log.debug("Remote host is:" + ftpClient.getUserName() + 
　　　　　　　　　　　　　　　　　　 "@" + ftpClient.getRemoteHost() + ":" +
                               ftpClient.getRemotePort() + "@" + ftpClient.getRemoteDirectory());
                        log.debug("kngAttachName is:" + kngAttachName);
                    }
                    String kngAttachName_ecode = new String(kngAttachName.getBytes(), "UTF-8");
                    if (ftpClient.exists(kngAttachName_ecode)) {
                        final int BUFFER_SIZE = 2048;
                        final byte[] buffer = new byte[BUFFER_SIZE];
                        int bytesRead = 0;
                        FileTransferInputStream inputStream = null;
                        try {
                            inputStream = ftpClient.downloadStream(kngAttachName_ecode);
                            while ((bytesRead = inputStream.read(buffer, 0, BUFFER_SIZE)) != -1) {
                                fos.write(buffer, 0, bytesRead);
                            }
                            fos.flush();
                        }
                        catch (IOException e) {
                            if (log.isDebugEnabled()) {
                                log.error("知识附件下载到文件" + kngAttachName + "服务器ftp发生异常" + 
　　　　　　　　　　　　　　　　　　　　　　e.getMessage(), e);
                            }
                            String message = new StringBuilder("the kngAffix ").
　　　　　　　　　　　　　　　　　　　　append(kngAttachName).append(" transFailed!").toString();
                            SoapUtil.recordLog("transFail", message);
                        }
                        finally {
                            if (inputStream != null) {
                                inputStream.close();
                            }
                            if (fos != null) {
                                fos.close();// MUST be closed to complete the transfer
                                IOUtils.closeQuietly(fos);
                            }
                        }
                    }
                    else {
                        log.error("经分知识(" + kngId + ")的附件(" + kngAttachName + ")不存在！");
                    }
                    // 知识附件对象
                    DataObject affixObject = new DataObjectSupport(
　　　　　　　　　　　　　　　　"com.huawei.csp.customization.kbs.domain", "c_kbs_kngAdjunctInfoEdit");
                    affixObject.setString("adjId", this.getCSPId());
                    affixObject.setString("kngId", kngId);
                    affixObject.setInt("versionNum", 0);
                    affixObject.setInt("adjClass", 2);
                    int j = kngAttachName.lastIndexOf("/");
                    if (j != -1) {
                        affixObject.setString("adjName", kngAttachName.substring(j + 1, 
　　　　　　　　　　　　　　　　　　kngAttachName.length()));
                    }
                    else {
                        affixObject.setString("adjName", kngAttachName);
                    }
                    affixObject.setString("adjPath", kngAttachPath + "/" + dateDirPath 
　　　　　　　　　　　　　　　　　　+ "/" + localFileName);
                    affixObject.setString("adjType", fileType);
                    affixObject.setInt("adjSize", 0);
                    String staffId = this.tableDataAccessService.
　　　　　　　　　　　　　　　　getSystemParam("107", "107993").getValue();
                    affixObject.setString("creatorId", staffId);
                    affixObject.setString("modifierId", staffId);
                    affixObject.setString("hostedCcId", "001");
                    affixObject.setInt("orderId", 1);
                    this.collectKngInterface.addKngAffix(affixObject);
                }
                else {
                    String message = new StringBuilder("the kngAffix file type error!").toString();
                    SoapUtil.recordLog("transFail", message);
                }
            }
            retInt = (0);
        }
        catch (Exception e) {
            log.error(e.getMessage(), e);
        }
        finally {
            if (ftpClient != null && ftpClient.isConnected()) {
                try {
                    ftpClient.disconnect();
                }
                catch (IOException ioex) {
                    log.error(ioex.getMessage(), ioex);
                }
                catch (FTPException ftpEx) {
                    log.error(ftpEx.getMessage(), ftpEx);
                }
            }
        }

本文转自：http://blog.sina.com.cn/s/blog_5b254b7701014qbd.html