FTPClient 路径中文获取不到数据

最新推荐文章于 2024-01-25 17:09:55 发布

原创最新推荐文章于 2024-01-25 17:09:55 发布 · 1k 阅读

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本文详细介绍了一个FTP客户端的构造和使用方法，包括连接服务器、下载文件和上传文件等核心功能的实现。通过具体代码示例，展示了如何使用Java进行FTP文件传输，以及在过程中可能遇到的异常处理。

//ftp构造
public FTPUtil(String hostname, int port, String userName, String password) {
    ftpClient = new FTPClient();
    this.hostname = hostname;
    this.port = port;
    this.userName = userName;
    this.password = password;
}

//ftp连接
public boolean connectServer() throws SocketException, IOException {
    ftpClient.connect(hostname, port);
    boolean isLogin = ftpClient.login(userName, password);
    boolean isSetFileType = ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
    ftpClient.cwd(rootNode);
    ftpClient.enterLocalPassiveMode();
    return isLogin && isSetFileType;

}

ftp下载文件

public String downloadFileFromFTP(String ftpFilePath) {
    InputStream is = null;
    byte[] data = null;
    ByteArrayOutputStream swapStream = null;
    try {
        // 获取ftp上的文件流
        is = ftpClient.retrieveFileStream(new String(ftpFilePath.getBytes("GBK"),"ISO-8859-1"));
        swapStream = new ByteArrayOutputStream();
        byte[] buff = new byte[1024];
        int rev = 0;
        while ((rev = is.read(buff, 0, buff.length)) > 0) {
            swapStream.write(buff, 0, rev);
        }
        data = swapStream.toByteArray();
        ftpClient.completePendingCommand();
        logger.info("FTP文件下载成功！");
    } catch (Exception e) {
        logger.error("FTP文件下载失败！", e);
    } finally {
        try {
            if (is != null) {
                is.close();
            }
            if (swapStream != null) {
                swapStream.close();
            }
        } catch (IOException e) {
            logger.info("关闭流发生异常_"+e);
        }
    }
    return Base64.encodeBase64String(data);

//上传文件

public boolean uploadFile(File localFile, String remoteFile) throws IOException {
    FileInputStream is = null;
    try {
        is = new FileInputStream(localFile);
        logger.info("FileInputStream file" + is);
        return ftpClient.appendFile(remoteFile, is);
    } finally {
        try {
            if (is != null) {
                is.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}