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文章目录I. Buffer 简介II. Buffer 属性III. Buffer 数据读写IV. Buffer 标记 mark() 和重置 reset()V. Buffer 清除翻转重绕VI. Buffer 缓冲区只读属性VII. Buffer 的链式调用I. Buffer 简介Buffer 是...

【Java 网络编程】TCP API 简介 ( Socket | ServerSocket )

文章目录I Socket API 简介II ServerSocket API 简介III Socket 数据交互IV Socket 客户端操作流程V Socket 服务器端操作流程VI Socket 与进程I Socket API 简介1. Socket 是客户端套接字的类 ;2. Socket ...

【Java 网络编程】TCP 简介

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【Java 网络编程】UDP API 简介 ( DatagramSocket | DatagramPacket )

I DatagramSocketDatagramSocket 类简介 : 负责 UDP 数据的发送和接收 , 该类没有合并到 Socket API 中 , 因为在 Socket 协议中 , 必须要存在服务器端与客户端 , 在 UDP 中 , DatagramSocket 既是服务器又是客户端 , 其...

【Java 网络编程】UDP 简介

文章目录I UDP 简介II UDP 不可靠性III UDP 作用IV UDP 报文头V UDP 数据包长度I UDP 简介1. UDP : User Datagram Protocol , 用户数据报协议 , 又叫用户数据报文协议 ;2. UDP 协议特点 : UDP 是面向数据报的传输层协议 ,...

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[帮助文档] Dataphin同步数据到HIVE报错请确认您的配置项fs.defaultFS,path的值是否正确,是否有读写权限,网络是否已断开java.io.FileNotFoundException

问题描述用户在使用同步任务，想HIVE集群同步数据时，会出现报错“请确认您的配置项fs.defaultFS, path的值是否正确, 是否有读写权限,网络是否已断开！java.io.FileNotFoundException”。问题原因1.用户在配置数据源时，没有配置core-site.xml和hd...

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