本章介绍 Spring Boot 整合 Ftpclient 的示例,支持断点续传

本项目源码下载

1 新建 Spring Boot Maven 示例工程项目

注意:是用来 IDEA 开发工具

  1. File > New > Project,如下图选择 Spring Initializr 然后点击 【Next】下一步
  2. 填写 GroupId(包名)、Artifact(项目名) 即可。点击 下一步

    groupId=com.fishpro

    artifactId=ftpclient
  3. 选择依赖 Spring Web Starter 前面打钩。
  4. 项目名设置为 spring-boot-study-ftpclient.

2 引入依赖 Pom

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <!-- apache ftp支持 -->
<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
<version>3.6</version>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>

3 编写代码示例

这里主要编写一个 Ftp操作类,对Ftp 进行 连接、关闭、上传文件、创建服务器目录、下载。来源网络,具体引用哪里已经找不到了。

package com.fishpro.ftpclient.util;

import org.apache.commons.net.ftp.FTP;
import org.apache.commons.net.ftp.FTPClient;
import org.apache.commons.net.ftp.FTPFile;
import org.apache.commons.net.ftp.FTPReply;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory; import java.io.*; /**
* 支持断点续传的FTP实用类
*
* @author xiongl
* @version 0.1 实现基本断点上传下载
* @version 0.2 实现上传下载进度汇报
* @version 0.3 实现中文目录创建及中文文件创建,添加对于中文的支持
*/
public class FtpContinueClient
{
private static final Logger logger = LoggerFactory.getLogger(FtpContinueClient.class); public FTPClient ftpClient = new FTPClient(); public FtpContinueClient()
{ // 设置将过程中使用到的命令输出到控制台
// this.ftpClient.addProtocolCommandListener(new
// PrintCommandListener(new PrintWriter(System.out)));
} /**
* 连接到FTP服务器
*
* @param hostname 主机名
* @param port 端口
* @param username 用户名
* @param password 密码
* @return 是否连接成功
* @throws IOException
*/
public boolean connect(String hostname, int port, String username, String password)
throws Exception { try
{
ftpClient.connect(hostname, port);
}
catch (Exception e)
{
throw new Exception("登陆异常,请检查主机端口");
}
ftpClient.setControlEncoding("GBK");
if (FTPReply.isPositiveCompletion(ftpClient.getReplyCode()))
{
if (ftpClient.login(username, password))
{
return true;
}
else
throw new Exception("登陆异常,请检查密码账号");
}
else
throw new Exception("登陆异常"); } public String[] getFileList(String filedir)
throws IOException {
ftpClient.enterLocalPassiveMode(); FTPFile[] files = ftpClient.listFiles(filedir); String[] sfiles = null;
if (files != null)
{
sfiles = new String[files.length];
for (int i = 0; i < files.length; i++)
{
// System.out.println(files[i].getName());
sfiles[i] = files[i].getName();
}
}
return sfiles;
} /**
* 从FTP服务器上下载文件,支持断点续传,上传百分比汇报
*
* @param remote 远程文件路径
* @param local 本地文件路径
* @return 上传的状态
* @throws IOException
*/
public DownloadStatus download(String remote, String local)
throws IOException {
// 设置被动模式
ftpClient.enterLocalPassiveMode(); // 设置以二进制方式传输
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
DownloadStatus result; // 检查远程文件是否存在
FTPFile[] files = ftpClient.listFiles(new String(remote.getBytes("GBK"), "iso-8859-1"));
if (files.length != 1)
{
// System.out.println("远程文件不存在");
logger.info("远程文件不存在");
return DownloadStatus.Remote_File_Noexist;
} long lRemoteSize = files[0].getSize();
File f = new File(local);
// 本地存在文件,进行断点下载
if (f.exists())
{
long localSize = f.length();
// 判断本地文件大小是否大于远程文件大小
if (localSize >= lRemoteSize)
{
logger.info("本地文件大于远程文件,下载中止");
return DownloadStatus.Local_Bigger_Remote;
} // 进行断点续传,并记录状态
FileOutputStream out = new FileOutputStream(f, true);
// 找出本地已经接收了多少
ftpClient.setRestartOffset(localSize);
InputStream in = ftpClient.retrieveFileStream(new String(remote.getBytes("GBK"), "iso-8859-1"));
try
{
byte[] bytes = new byte[1024];
// 总的进度
long step = lRemoteSize / 100;
long process = localSize / step;
int c;
while ((c = in.read(bytes)) != -1)
{
out.write(bytes, 0, c);
localSize += c;
long nowProcess = localSize / step;
if (nowProcess > process)
{
process = nowProcess;
if (process % 10 == 0)
logger.info("下载进度:" + process);
// TODO 更新文件下载进度,值存放在process变量中
}
}
}
catch (Exception e)
{
}
finally
{
if (in != null)
in.close();
if (out != null)
out.close();
} // 确认是否全部下载完毕
boolean isDo = ftpClient.completePendingCommand();
if (isDo)
{
result = DownloadStatus.Download_From_Break_Success;
}
else
{
result = DownloadStatus.Download_From_Break_Failed;
}
}
else
{
OutputStream out = new FileOutputStream(f);
InputStream in = ftpClient.retrieveFileStream(new String(remote.getBytes("GBK"), "iso-8859-1"));
try
{
byte[] bytes = new byte[1024];
long step = lRemoteSize / 100;
long process = 0;
long localSize = 0L;
int c;
while ((c = in.read(bytes)) != -1)
{
out.write(bytes, 0, c);
localSize += c;
long nowProcess = localSize / step;
if (nowProcess > process)
{
process = nowProcess;
if (process % 10 == 0)
logger.info("下载进度:" + process);
// TODO 更新文件下载进度,值存放在process变量中
}
}
}
catch (Exception e)
{
}
finally
{
if (in != null)
in.close();
if (out != null)
out.close();
}
boolean upNewStatus = ftpClient.completePendingCommand();
if (upNewStatus)
{
result = DownloadStatus.Download_New_Success;
}
else
{
result = DownloadStatus.Download_New_Failed;
}
}
return result;
} /**
* 上传文件到FTP服务器,支持断点续传
*
* @param local 本地文件名称,绝对路径
* @param remote 远程文件路径,使用/home/directory1/subdirectory/file.ext 按照Linux上的路径指定方式,支持多级目录嵌套,支持递归创建不存在的目录结构
* @return 上传结果
* @throws IOException
*/
public UploadStatus upload(String local, String remote)
throws IOException {
// 设置PassiveMode传输
ftpClient.enterLocalPassiveMode();
// 设置以二进制流的方式传输
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
ftpClient.setControlEncoding("GBK");
UploadStatus result;
// 对远程目录的处理
String remoteFileName = remote;
if (remote.contains("/"))
{
remoteFileName = remote.substring(remote.lastIndexOf("/") + 1);
// 创建服务器远程目录结构,创建失败直接返回
if (CreateDirecroty(remote, ftpClient) == UploadStatus.Create_Directory_Fail)
{
return UploadStatus.Create_Directory_Fail;
}
} // 检查远程是否存在文件
FTPFile[] files = ftpClient.listFiles(new String(remoteFileName.getBytes("GBK"), "iso-8859-1"));
if (files.length == 1)
{
long remoteSize = files[0].getSize();
File f = new File(local);
long localSize = f.length();
if (remoteSize == localSize)
{
return UploadStatus.File_Exits;
}
else if (remoteSize > localSize)
{
return UploadStatus.Remote_Bigger_Local;
} // 尝试移动文件内读取指针,实现断点续传
result = uploadFile(remoteFileName, f, ftpClient, remoteSize); // 如果断点续传没有成功,则删除服务器上文件,重新上传
if (result == UploadStatus.Upload_From_Break_Failed)
{
if (!ftpClient.deleteFile(remoteFileName))
{
return UploadStatus.Delete_Remote_Faild;
}
result = uploadFile(remoteFileName, f, ftpClient, 0);
}
}
else
{
result = uploadFile(remoteFileName, new File(local), ftpClient, 0);
}
return result;
} /**
* 断开与远程服务器的连接
*
* @throws IOException
*/
public void disconnect()
throws IOException {
if (ftpClient.isConnected())
{
ftpClient.disconnect();
}
} /**
* 递归创建远程服务器目录
*
* @param remote 远程服务器文件绝对路径
* @param ftpClient FTPClient对象
* @return 目录创建是否成功
* @throws IOException
*/
public UploadStatus CreateDirecroty(String remote, FTPClient ftpClient)
throws IOException {
UploadStatus status = UploadStatus.Create_Directory_Success;
String directory = remote.substring(0, remote.lastIndexOf("/") + 1);
if (!directory.equalsIgnoreCase("/")
&& !ftpClient.changeWorkingDirectory(new String(directory.getBytes("GBK"), "iso-8859-1")))
{
// 如果远程目录不存在,则递归创建远程服务器目录
int start = 0;
int end = 0;
if (directory.startsWith("/"))
{
start = 1;
}
else
{
start = 0;
}
end = directory.indexOf("/", start);
while (true)
{
String subDirectory = new String(remote.substring(start, end).getBytes("GBK"), "iso-8859-1");
if (!ftpClient.changeWorkingDirectory(subDirectory))
{
if (ftpClient.makeDirectory(subDirectory))
{
ftpClient.changeWorkingDirectory(subDirectory);
}
else
{
System.out.println("创建目录失败");
return UploadStatus.Create_Directory_Fail;
}
} start = end + 1;
end = directory.indexOf("/", start); // 检查所有目录是否创建完毕
if (end <= start)
{
break;
}
}
}
return status;
} /**
* 上传文件到服务器,新上传和断点续传
*
* @param remoteFile 远程文件名,在上传之前已经将服务器工作目录做了改变
* @param localFile 本地文件File句柄,绝对路径
* @param ftpClient FTPClient引用
* @return
* @throws IOException
*/
public UploadStatus uploadFile(String remoteFile, File localFile, FTPClient ftpClient, long remoteSize)
throws IOException {
UploadStatus status;
// 显示进度的上传
long step = localFile.length() / 100;
long process = 0;
long localreadbytes = 0L;
RandomAccessFile raf = new RandomAccessFile(localFile, "r");
OutputStream out = ftpClient.appendFileStream(new String(remoteFile.getBytes("GBK"), "iso-8859-1"));
// 断点续传
if (remoteSize > 0)
{
ftpClient.setRestartOffset(remoteSize);
process = remoteSize / step;
raf.seek(remoteSize);
localreadbytes = remoteSize;
}
byte[] bytes = new byte[1024];
int c;
while ((c = raf.read(bytes)) != -1)
{
out.write(bytes, 0, c);
localreadbytes += c;
if (localreadbytes / step != process)
{
process = localreadbytes / step;
System.out.println("上传进度:" + process);
// TODO 汇报上传状态
}
}
out.flush();
raf.close();
out.close();
boolean result = ftpClient.completePendingCommand();
if (remoteSize > 0)
{
status = result ? UploadStatus.Upload_From_Break_Success : UploadStatus.Upload_From_Break_Failed;
}
else
{
status = result ? UploadStatus.Upload_New_File_Success : UploadStatus.Upload_New_File_Failed;
} return status;
} public static void main(String[] args)
{
FtpContinueClient myFtp = new FtpContinueClient();
try
{
//myFtp.connect("192.168.1.245", 21, "aircom", "123456");
// myFtp.ftpClient.makeDirectory(new
// String("电视剧".getBytes("GBK"),"iso-8859-1"));
// myFtp.ftpClient.changeWorkingDirectory(new
// String("电视剧".getBytes("GBK"),"iso-8859-1"));
// myFtp.ftpClient.makeDirectory(new
// String("走西口".getBytes("GBK"),"iso-8859-1"));
// System.out.println(myFtp.upload("E:\\yw.flv", "/yw.flv",5));
// System.out.println(myFtp.upload("E:\\走西口24.mp4","/央视走西口/新浪网/走西口24.mp4"));
//System.out.println(myFtp.download("2.txt", "H:\\sfa.txt"));
//myFtp.disconnect();
}
catch (Exception e)
{ System.out.println("连接FTP出错:" + e.getMessage());
}
} public enum DownloadStatus
{
Remote_File_Noexist, // 远程文件不存在
Local_Bigger_Remote, // 本地文件大于远程文件
Download_From_Break_Success, // 断点下载文件成功
Download_From_Break_Failed, // 断点下载文件失败
Download_New_Success, // 全新下载文件成功
Download_New_Failed; // 全新下载文件失败
} public enum UploadStatus
{
Create_Directory_Fail, // 远程服务器相应目录创建失败
Create_Directory_Success, // 远程服务器闯将目录成功
Upload_New_File_Success, // 上传新文件成功
Upload_New_File_Failed, // 上传新文件失败
File_Exits, // 文件已经存在
Remote_Bigger_Local, // 远程文件大于本地文件
Upload_From_Break_Success, // 断点续传成功
Upload_From_Break_Failed, // 断点续传失败
Delete_Remote_Faild; // 删除远程文件失败
}
}

在启动文件中

@SpringBootApplication
public class FtpclientApplication { public static void main(String[] args) { SpringApplication.run(FtpclientApplication.class, args); /*FtpContinueClient*/
FtpContinueClient ftp=new FtpContinueClient();
String filePath="";
String filename="";
try{
ftp.connect("192.168.0.1",21,"administrator","xxdfsdfs^");
FtpContinueClient.UploadStatus uploadStatus= ftp.upload(filePath,"/"+filename);
ftp.disconnect(); }catch (Exception ex){
ex.printStackTrace();
}finally { }
} }

本示例支持断点续传,能够解决大部分FTP客户端上传问题(代码来源网络)

本项目源码下载

Spring Boot Ftp Client 客户端示例支持断点续传的更多相关文章

  1. Spring Kafka整合Spring Boot创建生产者客户端案例

    每天学习一点点 编程PDF电子书.视频教程免费下载:http://www.shitanlife.com/code 创建一个kafka-producer-master的maven工程.整个项目结构如下: ...

  2. Spring Boot 整合 FastDFS 客户端

    原文地址:Spring Boot 整合 FastDFS 客户端 博客地址:http://www.extlight.com 一.前言 前两篇介绍整体上介绍了通过 Nginx 和 FastDFS 的整合来 ...

  3. spring boot: @EnableScheduling开启计划任务支持,@Scheduled计划任务声明

    spring boot: @EnableScheduling开启计划任务支持, @Scheduled计划任务声明 package ch2.scheduler2; //日期转换方式 import jav ...

  4. Spring Boot 2.x 综合示例-整合thymeleaf、mybatis、shiro、logging、cache开发一个文章发布管理系统

    一.概述 经过HelloWorld示例(Spring Boot 2.x 快速入门(上)HelloWorld示例)( Spring Boot 2.x 快速入门(下)HelloWorld示例详解)两篇的学 ...

  5. FTP文件上传 支持断点续传 并 打印下载进度(二) —— 单线程实现

    这个就看代码,哈哈哈哈哈  需要用到的jar包是: <dependency> <groupId>commons-net</groupId> <artifact ...

  6. spring boot eureka client

    eureka client @EnableDiscoveryClient @SpringBootApplication public class DemoApplication { public st ...

  7. spring boot 结合jsp简单示例

    引入依赖 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>sp ...

  8. jersey在 spring boot 添加 packages 扫描路径支持

    最近公司内部系统要做数据对接,故使用 jersey 来做 restful webservice 接口设计.由于 spring boot 已经集成 jersey,估计直接导入 spring-boot-s ...

  9. Spring Boot + Docker + K8S 简单示例

    前言 最近看了看k8s,感觉用这个管理docker确实比自己写一坨脚本进步太多了,简直不是一个次原的东西. 看着k8s的官方文档随手写了个小Demo,一个基于k8s的spring boot服务. 代码 ...

随机推荐

  1. ieee-explore文献免费下载办法

    假设文献网址为:http://ieeexplore.ieee.org/document/xxxxxxx/ 下载保存的话,改为http://ieeexplore.ieee.org.sci-hub.tw/ ...

  2. C语言 strlen

    C语言 strlen #include <string.h> size_t strlen(const char *s); 功能:计算指定指定字符串s的长度,不包含字符串结束符‘\0’ 参数 ...

  3. Func<T,TResult>代理

    .NET平台已经发生了很多变化,最近决定好好的系统的学习一下了,开发做了这么多年,老实说很多时候都是在吃老本,这样下去不行的... 今天学习的是Func<T,TResult>,它是新的委托 ...

  4. c# excel 读写 64位操作系统 64位excel

    用c#读写excel时,会出现 “本机未注册Microsoft.ACE.OLEDB.12.0 驱动(什么的,忘了)” 读写 64位的excel 时,要在项目属性里改一下目标平台,默认的为*86, 改为 ...

  5. bugku 白哥的鸽子

    首先下载之后发现是一个txt 然后更改一下后缀名发现这是一张jpg 图片然后看一下属性然后用hxd分析一下 看看有没有zip 发现没有 然后拖到地下然后发现有一串密码有些问题 然后查一下发现是 栏杆密 ...

  6. RedHat7 / CentOS 7 忘记root密码修改

    摘自:https://blog.csdn.net/bubbleyang/article/details/91360856 进入互动式命令环境 开机出现 grub boot loader 开机选项菜单时 ...

  7. C#中的注释

    帮助程序员便于阅读代码 单行注释 // 多行注释 /* * */ 文档注释 /// <summary> /// ... /// <summary>

  8. layuiAdmin pro v1.x 【单页版】开发者文档

    layuiAdmin std v1.x [iframe版]开发者文档 题外 该文档适用于 layuiAdmin 专业版(单页面),阅读之前请务必确认是否与你使用的版本对应. 熟练掌握 layuiAdm ...

  9. js和jsp中怎么去获取后台 model.addAttribute()存入的list<。。。>对象

    java 后台List productionGroupList =getProductionGroupList(); model.addAttribute("productionGroupL ...

  10. 给footer标签设置padding:7px auto;失效

    margin:auto可以做到水平居中,前提条件就是,这个标签是块状元素,并且有个确定的宽度,百分比的宽度也行: padding的话, 设置成auto它会自动继承浏览器的padding值, 当设置pa ...