Java操作FTP,从FTP上读取指定文件,把指定文件上传到FTP

需要添加的依赖

        <!-- https://mvnrepository.com/artifact/commons-net/commons-net -->
        <dependency>
            <groupId>commons-net</groupId>
            <artifactId>commons-net</artifactId>
            <version>3.3</version>
        </dependency>

读取FTP中的文件

    public static void main(String[] args) throws Exception
    {
        FTPClient ftpClient=new FTPClient();//import org.apache.commons.net.ftp.FTPClient;
        ftpClient.connect("10.18.20.147", 21);//连接ftp
        ftpClient.login("tyz_ftp", "tc_xw_ftp");//登陆ftp
        if (FTPReply.isPositiveCompletion(ftpClient.getReplyCode()))//是否连接成功,成功true,失败false
        {
            ftpClient.changeWorkingDirectory("/var/ftp/home/tyzf_ftp/batchUpload");//找到指定目录

            InputStream inputStream=ftpClient.retrieveFileStream("20190708SC.csv");//根据指定名称获取指定文件
            BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(inputStream,"GBK"));
            String line=null;
            StringBuilder stringBuilder=new StringBuilder(150);
            while ((line = bufferedReader.readLine()) != null)
            {
                stringBuilder.append(line + "
");
            }
            String context=stringBuilder.toString();

            String[] sz = context.replaceAll(""","").split("
");
            for (int i = 0; i < sz.length; i++)
            {
                System.out.println(sz[i]);//输出每一行的数据
            }
        }
    }

把文件上传到FTP

    public static void main(String[] args) throws Exception
    {
        FTPClient ftpClient = new FTPClient();//import org.apache.commons.net.ftp.FTPClient;
        ftpClient.connect("10.18.20.147", 21);//连接ftp
        ftpClient.login("tyz_ftp", "tc_xw_ftp");//登陆ftp
        ftpClient.changeWorkingDirectory("/var/ftp/home/tyzf_ftp/batchUpload");//需要把文件上传到FTP哪个目录
        File file = new File("D:\aa.txt");//需要上传的文件
        System.out.println(ftpClient.storeFile(file.getName(), new FileInputStream(file)));//存储文件,成功返回true,失败false
    }