1.移植环境准备①安装ubuntu14.04系统；②安装 jdkaptget install  jdk1.7③安装SDKhttp://www.cr173.com/soft/78226.html(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fwww.cr173.co

Netty中使用FastThreadLocal替代JDK中的ThreadLocal【JAVA】ThreadLocal源码分析(https://www.oschina.net/action/GoToLink?urlhttps%3A%2F%2Fwww.cnblogs.com%2Fa526583280%2Fp%2F10725093.html)，其用法和Thr

开发工具IntellijIdea,版本Ultimate2020.2JDK：1.81.使用SpringInitializr新建项目,如果是社区版Idea，可以在线创建然后导入!(https://oscimg.oschina.net/oscnet/up5d92896117accfe498515c85fd59048bf19.png)

首先：环境jdk一定要是1.7以上，否则插件安装会失败。【本地安装】第一步：下载Gradlehttp://services.gradle.org/distributions(https://www.oschina.net/action/GoToLink?urlhttp%3A%2F%2Fgradle.org%2Fgradledownl

ConcurrentHashmap（JDK1.7） 总体描述：　　concurrentHashmap是为了高并发而实现，内部采用分离锁的设计，有效地避开了热点访问。而对于每个分段，ConcurrentHashmap采用final和内存可见修饰符volatile关键字（内存立即可见：Ja

NIO高并发是jdk1.4出现的新的流.NIONewIO同步式非阻塞式IOBIOBlockingIO同步式阻塞式IOUDP/TCPAIOAsynchronousIO异步式非阻塞IOjdk1.8BIO的缺点1.会产生阻塞行为receive/accept/connect/r

!(https://oscimg.oschina.net/oscnet/fbbdae47d81b44a68393276b9ec1f9a8.jpg)_作者：__h4cd__来源：oschina.net/news/102757/jdk8215217swearwords_近日有开发者提交了一个issue

一、war包安装方式1、准备tomcat、jdk1.82、下载jenkins.war。下载地址：https://jenkins.io/zh/download/3、将jendins.war放到$TOMCAT\_HOME/webapps目录下，启动tomcat即可二、docker安装1、拉取镜像https://hub.docker.co

jenkins版本安装jdk安装和环境配置完成官网(https://www.oschina.net/action/GoToLink?urlhttps%3A%2F%2Fwww.jenkins.io%2Fzh%2Fdownload%2F)下载(https://www.oschina.net/action/GoTo

缘起最近公司项目要求JDK从8升到17，SpringBoot版本从2.x升级到3.x，期间遇到了一个诡异的FileNotFoundException异常，日志如下（敏感信息使用xxx脱敏）logorg.springframework.beans.facto