Java上传文件FTP服务器代码

1. 在实际的应用重，通常是通过程序来进行文件的上传。

2. 实现java上传文件到ftp服务器中

• 新建maven项目
• 添加依赖

  <dependency>
          <groupId>commons-net</groupId>
          <artifactId>commons-net</artifactId>
          <version>3.3</version>
      </dependency>

3.实例代码：

package com.test.fto.demo;

/**
 * ftp链接常量
 *
 */
public class Ftp {

    private String ipAddr;//ip地址
    
    private Integer port;//端口号
    
    private String userName;//用户名
    
    private String pwd;//密码
    
    private String path;//aaa路径

    public String getIpAddr() {
        return ipAddr;
    }

    public void setIpAddr(String ipAddr) {
        this.ipAddr = ipAddr;
    }

    public Integer getPort() {
        return port;
    }

    public void setPort(Integer port) {
        this.port = port;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }

    public String getPath() {
        return path;
    }

    public void setPath(String path) {
        this.path = path;
    }
    
    
}

测试代码：

package com.test.fto.demo;

import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPReply;
import org.testng.annotations.Test;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class FtpUtil {
    
    private static FTPClient ftp;

    /**
     * 获取ftp连接
     *
     * @param f
     * @return
     * @throws Exception
     */
    public static boolean connectFtp(Ftp f) throws Exception {
        ftp = new FTPClient();
        boolean flag = false;
        int reply;
        if (f.getPort() == null) {
            ftp.connect(f.getIpAddr(), 21);
        } else {
            ftp.connect(f.getIpAddr(), f.getPort());
        }
        ftp.login(f.getUserName(), f.getPwd());
        ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
        reply = ftp.getReplyCode();
        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp.disconnect();
            return flag;
        }
        ftp.changeWorkingDirectory(f.getPath());
        flag = true;
        return flag;
    }

    /**
     * 关闭ftp连接
     */
    public static void closeFtp() {
        if (ftp != null && ftp.isConnected()) {
            try {
                ftp.logout();
                ftp.disconnect();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * ftp上传文件
     *
     * @param f
     * @throws Exception
     */
    public static void upload(File f) throws Exception {
        if (f.isDirectory()) {
            ftp.makeDirectory(f.getName());
            ftp.changeWorkingDirectory(f.getName());
            String[] files = f.list();
            for (String fstr : files) {
                File file1 = new File(f.getPath() + "/" + fstr);
                if (file1.isDirectory()) {
                    upload(file1);
                    ftp.changeToParentDirectory();
                } else {
                    File file2 = new File(f.getPath() + "/" + fstr);
                    FileInputStream input = new FileInputStream(file2);
                    ftp.storeFile(file2.getName(), input);
                    input.close();
                }
            }
        } else {
            File file2 = new File(f.getPath());
            FileInputStream input = new FileInputStream(file2);
            ftp.storeFile(file2.getName(), input);
            input.close();
        }
    }

    @Test
    public static void test() throws Exception {
        Ftp f = new Ftp();
        f.setIpAddr("your ip");
        f.setUserName("username");
        f.setPwd("password");
        FtpUtil.connectFtp(f);
        File file = new File("F:/robotium-solo-5.6.1.jar");
        FtpUtil.upload(file);//把文件上传在ftp上
        System.out.println("上传文件完成。。。。");
    }

}