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Java NIO+多线程实现聊天室

Java 100.00%

chat's Introduction

Java基于多线程和NIO实现聊天室

涉及到的技术点
- 线程池ThreadPoolExecutor
- 阻塞队列BlockingQueue，生产者消费者模式
- Selector
- Channel
- ByteBuffer
- ProtoStuff 高性能序列化
- HttpClient连接池
- Spring依赖注入
- lombok简化POJO开发
- 原子变量
- 内置锁
- CompletionService
- log4j+slf4j日志
实现的功能
- 登录注销
- 单聊
- 群聊
- 客户端提交任务,下载图片并显示
- 上线下线公告
- 在线用户记录
- 批量下载豆瓣电影的图片，并打为压缩包传输给客户端
客户端使用方式：
- 登录：默认用户名是user1-user5，密码分别是pwd1-pwd5
  - 例：打开客户端后输入用户名为user1,密码为pwd1
- 注销：关闭客户端即可
- 单聊：@username:message
  - 例：@user2:hello
- 群聊：message
  - 例：hello,everyone
- 提交任务：task.file:图片的URL / task.crawl_image:豆瓣电影的id[?imageSize=n] 可以加请求参数
  - 例1：task.file:https://img1.doubanio.com/view/movie_poster_cover/lpst/public/p2107289058.webp 下载完毕后会弹出一个框，输入想将其保存到的路径，比如E:/img.webp
  - 例2：task.crawl_image:1292371?imageSize=2 下载完毕后在弹出的框中输入E:/images.zip
假设用户输入都是符合格式的
尽可能提高程序的健壮性，对各种异常情况进行处理
不得不承认的是，客户端做的很粗糙，主要开发目的还是练习Java的多线程和NIO

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