问题描述：

使用org.apache.commons.net.ftp.FTPClient创建中文目录、上传中文文件名时，目录名及文件名中的中文显示为“??”。

原因：

FTP协议里面，规定文件名编码为iso-8859-1，所以目录名或文件名需要转码。

解决方案：

1.将中文的目录或文件名转为iso-8859-1编码的字符。参考代码：

2.设置linux环境变量

实例：

public boolean upLoadFile(File file, String path, String fileName) throws IOException {
        boolean result = false;
        FTPClient ftpClient = new FTPClient();
        try {
            ftpClient.connect(confService.getConfValue(PortalConfContants.FTP_CLIENT_HOST));
            ftpClient.login(confService.getConfValue(PortalConfContants.FTP_CLIENT_USERNAME), confService
                    .getConfValue(PortalConfContants.FTP_CLIENT_PASSWORD));
            ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);

// make directory
            if (path != null && !"".equals(path.trim())) {
                String[] pathes = path.split("/");
                for (String onepath : pathes) {
                    if (onepath == null || "".equals(onepath.trim())) {
                        continue;
                    }

onepath=new String(onepath.getBytes("GBK"),"iso-8859-1");                   
                    if (!ftpClient.changeWorkingDirectory(onepath)) {
                        ftpClient.makeDirectory(onepath);
                        ftpClient.changeWorkingDirectory(onepath);
                    }
                }
            }

result = ftpClient.storeFile(new String(fileName.getBytes("GBK"),"iso-8859-1"), new FileInputStream(file));
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            ftpClient.logout();
        }
        return result;
    }

转自:http://www.jb51.net/article/65687.htm