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‎source/_posts/Centos-7-web-环境搭建.md

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date: 2020-03-01 17:51:00
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## 1、Xshell 5
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为了方便管理操作服务器，这里采用 `xshell 5` 来连接服务器，使用ssh证书，端口号 22，对于购买的与主机需要开放相应的端口。

‎source/_posts/Consul学习.md

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服务注册与服务发现是在分布式服务架构中常常会涉及到的东西，业界常用的服务注册与服务发现工具有 [ZooKeeper](https://zookeeper.apache.org/)、[etcd](https://coreos.com/etcd/)、[Consul](https://www.consul.io/) 和 [Eureka](https://github.com/Netflix/eureka)。Consul 的主要功能有服务发现、健康检查、KV存储、安全服务沟通和多数据中心。Consul 与其他几个工具的区别可以在这里查看 [Consul vs. Other Software](https://www.consul.io/intro/vs/index.html)。

‎source/_posts/Double为什么会失真？.md

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## 前言
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先来看一个double失真的例子

‎source/_posts/ECharts地图省市联动.md

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date: 2020-03-05 20:22:00
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>最近需要做一个省市联动的地图，来随时观看各地区的用户数量。
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```
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效果图：
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![](http://q6rnahf7l.bkt.clouddn.com/china.png)
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![](https://cdn.jsdelivr.net/gh/coder-lida/CDN/img/assert/echart-1.png)
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![](https://cdn.jsdelivr.net/gh/coder-lida/CDN/img/assert/echart-2.png)
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源码地址：https://github.com/coder-lida/chinamap.git
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‎source/_posts/GSON搞定任何JSON数据.md

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## 一、Gson介绍

‎source/_posts/Git常用命令.md

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>相关资料：

‎source/_posts/HTTP-413错误解决方法.md

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这是由于上传文件过大引起的。
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‎source/_posts/JVM运行内存分类.md

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![图片.png](http://q6pznk9ej.bkt.clouddn.com/jvm.png)

‎source/_posts/JWT简介.md

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‎source/_posts/Java-中-IO-流.md

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## Java 中 IO 流分为几种?

‎source/_posts/Java14新特性：Switch表达式.md

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>Java 14正式发布switch表达式特性。在之前的两个 Java 版本Java12，Java13，switch特性只是预览版。
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新的switch表达式有助于避免一些bug，因为它的表达和组合方式更容易编写。

‎source/_posts/Java14新特性：增强-instanceOf-类型推断.md

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>Java中instanceof是用来判断对象的类型是否是目标类型。如果是返回true，不是返回false。
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‎source/_posts/Java14新特性：增强NPE-NullPointerException-错误推断.md

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>改进 NullPointerExceptions，通过准确描述哪些变量为 null 来提高 JVM 生成的异常的可用性。该提案的作者希望为开发人员和支持人员提供有关程序为何异常终止的有用信息，并通过更清楚地将动态异常与静态程序代码相关联来提高对程序的理解。
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‎source/_posts/Java14新特性：字符串块.md

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java1之前写字符串拼接
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```

‎source/_posts/Java下载文件的几种方式.md

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## 以流的方式下载

‎source/_posts/Java中的clone.md

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## Java中对象的创建
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* 使用new操作符创建一个对象

‎source/_posts/Java反射.md

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## 一、什么是反射？
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[JAVA反射机制](https://baike.baidu.com/item/JAVA%E5%8F%8D%E5%B0%84%E6%9C%BA%E5%88%B6/6015990)是在运行状态中，对于任意一个类，都能够知道这个类的所有属性和方法；对于任意一个对象，都能够调用它的任意方法和属性；这种动态获取信息以及动态调用对象方法的功能称为java语言的反射机制。

‎source/_posts/Java线程创建全家桶.md

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## 继承Thread类

‎source/_posts/Java虚拟机是如何加载Java类的？.md

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>Java 虚拟机中的类加载即从 class 文件到内存中的类，按先后顺序需要经过加载、链接以及初始化三大步骤。

‎source/_posts/Lambda表达式.md

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## 引言
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在 Java 8 以前，若我们想要把某些功能传递给某些方法，总要去写匿名类。以前注册事件监听器的写法与下面的示例代码就很像：

‎source/_posts/MD5-到底是不是加密算法？.md

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在回答这个问题之前，我们先分别来了解一下两个知识点：
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* 什么是 MD5 算法？

‎source/_posts/MyBatis返回Map键值对数据Key值大小写问题.md

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## Controller
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```

‎source/_posts/Mybatis if标签判断数字大小.md

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## if标签语法
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```

‎source/_posts/Mysql之ONLY-FULL-GROUP-BY默认配置问题.md

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## 错误
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```

‎source/_posts/RSA-非对称加密原理.md

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## RSA 加密原理

‎source/_posts/Sentinel入门.md

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* 完善的 SPI 扩展点：Sentinel 提供简单易用、完善的 SPI 扩展接口。您可以通过实现扩展接口来快速地定制逻辑。例如定制规则管理、适配动态数据源等。
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### Sentinel 的主要特性
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>注意：
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详细说明请参考 [官方 Sentinel Wiki](https://links.jianshu.com/go?to=https%3A%2F%2Fgithub.com%2Falibaba%2FSentinel%2Fwiki)
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‎source/_posts/Spring-Boot-Undertow容器启动.md

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## Undertow简介

‎source/_posts/Spring-Boot-两种部署到服务器的方式.md

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## jar包(官方推荐)

‎source/_posts/Spring-Cloud-Feign使用详解.md

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## 背景

‎source/_posts/SpringBoot使用Undertow代替tomcat.md

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>Undertow 是基于java nio的web服务器，应用比较广泛，内置提供的PathResourceManager，可以用来直接访问文件系统；如果你有文件需要对外提供访问，除了ftp,nginx等，undertow 也是一个不错的选择，作为java开发，服务搭建非常简便

‎source/_posts/SpringMVC请求参数获取的几种方法.md

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SpringMVC请求参数获取的几种方法

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