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 + "\n");

            }

            String context=stringBuilder.toString();

            String[] sz = context.replaceAll("\"","").split("\n");

            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

    }