<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[乱梦]]></title><description><![CDATA[一只小白]]></description><link>https://blog.youkuaiyun.com/u014646677</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; u014646677]]></copyright><item><title><![CDATA[Centos7 安装MySQL5.7]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/107950611</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/107950611</guid><author>u014646677</author><pubDate>Wed, 12 Aug 2020 09:58:02 +0800</pubDate><description><![CDATA[一、清理老的mysql
（1）卸载已有的mysql
　　查找以前是否装有mysql命令：
　　rpm -qa|grep -i mysql
　　停止mysql服务，卸载之前安装的mysql
　　rpm -ev 包名
　　如果卸载过程中报依赖错误，直接在卸载命名后面加参数 --nodeps
　　rpm -ev 包名 --nodeps
（2）查找之前老版本mysql的文件并删除老版本mysql的文件
　　find / -name mysql
　　# 出来一堆列表
　　# 一个一个删除就ok
二、安装前的准备
（1]]></description><category></category></item><item><title><![CDATA[centos7系统 firewalld常用指令]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/107950477</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/107950477</guid><author>u014646677</author><pubDate>Wed, 12 Aug 2020 09:47:49 +0800</pubDate><description><![CDATA[转自:https://www.cnblogs.com/moxiaoan/p/5683743.html
1. firewalld的基本使用
启动： systemctl start firewalld
关闭： systemctl stop firewalld
查看状态： systemctl status firewalld
开机禁用  ： systemctl disable firewalld
开机启用  ： systemctl enable firewalld
2. systemctl是CentOS7的服务管]]></description><category></category></item><item><title><![CDATA[linux系统tomcat开机自启动]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/107950352</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/107950352</guid><author>u014646677</author><pubDate>Wed, 12 Aug 2020 09:43:06 +0800</pubDate><description><![CDATA[一、创建 vim /etc/init.d/tomcat
	#!/bin/sh  
	# chkconfig: 345 99 10  
	# description: Auto-starts tomcat  
	# /etc/init.d/tomcatd  
	# Tomcat auto-start  
	# Source function library.  
	#. /etc/init.d/functions  
	# source networking configuration.  
	#. /etc]]></description><category></category></item><item><title><![CDATA[monit 服务器监控]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/107950015</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/107950015</guid><author>u014646677</author><pubDate>Wed, 12 Aug 2020 09:31:08 +0800</pubDate><description><![CDATA[一、安装与配置
参考链接:https://blog.youkuaiyun.com/arnold_wang/article/details/39855331
安装
yum install monit

配置
配置文件：/etc/monitrc
vim /etc/monitrc

#监控间隔
set daemon  30	# check services at 30 seconds intervals

#配置日志文件
set log syslog
set logfile /var/log/monit.log

#设置pi]]></description><category></category></item><item><title><![CDATA[服务熔断Hystrix和Sentinel的使用方式]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/107788736</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/107788736</guid><author>u014646677</author><pubDate>Tue, 04 Aug 2020 16:00:45 +0800</pubDate><description><![CDATA[Hystrix组件
1、服务器容错核心知识
1.1、雪崩效应
​		在微服务架构中，一个请求需要调用多个服务是非常常见的。如客户端访问A服务，而A服务需要调用B 服务，B服务需要调用C服务，由于网络原因或者自身的原因，如果B服务或者C服务不能及时响应，A服 务每处于阻塞状态，直到B服务C服务响应。此时若有大量的请求涌入，容器的线程资源会被消耗完毕， 导致服务簿痪。服务与服务之间的依赖性，故障会传播，造成连锁反应，会对整个微服务系统造成灾难 性的严重后果，这就是服务故障的"雪崩"效应。
1.2、服务隔离
​	]]></description><category></category></item><item><title><![CDATA[负载均衡Ribbon Feign 使用及区别]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/107788829</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/107788829</guid><author>u014646677</author><pubDate>Tue, 04 Aug 2020 16:00:30 +0800</pubDate><description><![CDATA[Ribbon
1 服务调用
Eureka内部集成了Ribbon

在创建RestTemplate 的时候,声明@LoadBalanced
使用restTemplate远程调用微服务:不需要拼接微服务的URL,用待请求的服务名替换URL地址

2 负载均衡
Ribbon是一个典型的客户端负载均衡器，Ribbon会根据服务的所有地址，根据内部的负载均衡算法，获取本次请求的有效地址。
使用方式：

在消费者的restTemplate bean上添加注解@LoadBalanced实现负载均衡.
修改调用方法内的ur]]></description><category></category></item><item><title><![CDATA[注册中心 Eureka Consul 使用方式]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/107788566</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/107788566</guid><author>u014646677</author><pubDate>Tue, 04 Aug 2020 15:53:46 +0800</pubDate><description><![CDATA[Eureka
Eureka使用步骤


eureka服务端


添加eureka-server依赖坐标
&lt;dependency&gt;
    &lt;groupId&gt;org.springframework.cloud&lt;/groupId&gt;
    &lt;artifactId&gt;spring-cloud-starter-netflix-eureka-server&lt;/artifactId&gt;
&lt;/dependency&gt;



eureka-server配置项
]]></description><category></category></item><item><title><![CDATA[springboot集成wangEditor]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/100138891</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/100138891</guid><author>u014646677</author><pubDate>Thu, 29 Aug 2019 15:35:54 +0800</pubDate><description><![CDATA[springboot+wangEditorwangEditorHTML页面第一步 引入js和css第二步 初始化编辑器后端配置配置文件上传路径本地资源映射文件上传controller
wangEditor
wangEditor是一个轻量级的web富文本编辑器

介绍：基于javascript和css开发的 Web富文本编辑器， 轻量、简洁、易用、开源免费
官网:http://www.wangedi...]]></description><category></category></item><item><title><![CDATA[Cesium 实现选中效果]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/90673113</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/90673113</guid><author>u014646677</author><pubDate>Wed, 29 May 2019 17:37:52 +0800</pubDate><description><![CDATA[基于鼠标事件的选择,可以通过MOUSE_MOVE或LEFT_CLICK事件触发


/*鼠标移动选择开始*/
		var silhouetteBlue = Cesium.PostProcessStageLibrary.createEdgeDetectionStage();
		silhouetteBlue.uniforms.color = Cesium.Color.BLUE;
		silhoue...]]></description><category></category></item><item><title><![CDATA[Cesium 获取点位坐标及camera角度]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/89638252</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/89638252</guid><author>u014646677</author><pubDate>Sun, 28 Apr 2019 14:57:30 +0800</pubDate><description><![CDATA[//单击显示点位坐标信息
handler.setInputAction(function(lclickment) {
	//得到当前三维场景
	var scene = viewer.scene;
	//得到当前三维场景的椭球体
	var ellipsoid = scene.globe.ellipsoid;
	//var cartesian = LoadCesium.Viewer.camera....]]></description><category></category></item><item><title><![CDATA[Cesium 实现鼠标悬浮事件]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/89638069</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/89638069</guid><author>u014646677</author><pubDate>Sun, 28 Apr 2019 14:52:36 +0800</pubDate><description><![CDATA[var currentEntity = null;
	var lastEntity = null;
	viewer.screenSpaceEventHandler.setInputAction(function onMouseMove(movement) {
		var pickedFeature = viewer.scene.pick(movement.endPosition);
		if ...]]></description><category></category></item><item><title><![CDATA[Cesium 坐标转换方法]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/89637377</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/89637377</guid><author>u014646677</author><pubDate>Sun, 28 Apr 2019 14:30:54 +0800</pubDate><description><![CDATA[//地理坐标(wgs84)==&gt;世界坐标(笛卡尔坐标系)
var ellipsoid = viewer.scene.globe.ellipsoid;
var coord_wgs84 = Cesium.Cartographic.fromDegrees(lng, lat, alt);//单位：度，度，米
var coord_xyz = ellipsoid.cartographicToCarte...]]></description><category></category></item><item><title><![CDATA[Cesium 基础  添加点位和名称label]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/89635696</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/89635696</guid><author>u014646677</author><pubDate>Sun, 28 Apr 2019 12:33:38 +0800</pubDate><description><![CDATA[ver entity = viewer.entities.add({
position: Cesium.Cartesian3.fromDegrees(120.9677706,30.7985748,2.61),
point: {
color: Cesium.Color.RED, //点位颜色
pixelSize: 10   ...]]></description><category></category></item><item><title><![CDATA[myeclipse中tomcat热部署设置]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/88944661</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/88944661</guid><author>u014646677</author><pubDate>Mon, 01 Apr 2019 11:40:25 +0800</pubDate><description><![CDATA[第一步：

 Tomcat安装目录下，修改 conf/server.xml 中的 Host 配置，设置其reloadable属性为true，即在Host标签中添加reloadable="true"这一句，重启Tomcat使配置文件生效。

第二步：

 在conf文件夹中的web.xml文件中添加


&lt;init-param&gt;
 &lt;param-name&g...]]></description><category></category></item><item><title><![CDATA[MyEclipse中使用svn更新报错]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/88888045</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/88888045</guid><author>u014646677</author><pubDate>Fri, 29 Mar 2019 12:09:09 +0800</pubDate><description><![CDATA[上周还在维护的项目，今天打开想更新一下，结果提示

svn: Can't move '***' to '***'

尝试在项目上右键点击cleanup操作

又是一个报错:

org.apache.subversion.javahl.ClientException: Attempted to lock an already-lock dir,

在网上查了很多资料，都没能解决问题

包括删除项目重...]]></description><category></category></item><item><title><![CDATA[JS输入时间字符串,获取上一个月同一天,同时判断是否为最大日期]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/88709428</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/88709428</guid><author>u014646677</author><pubDate>Thu, 21 Mar 2019 11:03:08 +0800</pubDate><description><![CDATA[输入时间字符串,获取上一个月同一天,同时判断是否超出上月最大日期

如果输入的为当月最大日期,则返回上月最大日期

例如:

输入2019-02-28 返回:2019-01-31

输入:2019-03-31 返回:2019-02-28


function getLastMonthMaxDay(date){
 var year = date.substr(0, 4);
 var mo...]]></description><category></category></item><item><title><![CDATA[mysql left join 索引失效]]></title><link>https://blog.youkuaiyun.com/u014646677/article/details/88366598</link><guid>https://blog.youkuaiyun.com/u014646677/article/details/88366598</guid><author>u014646677</author><pubDate>Sat, 09 Mar 2019 15:22:06 +0800</pubDate><description><![CDATA[Sql语句:


select count(s.fuid) amount,case when avg(s.grade) is null then 0 else round(avg(s.grade)*20,2) end average,b.name,b.lon,b.lat

from bs_hotel b left join dwd_comment_hotel_sentiment_internet_...]]></description><category></category></item></channel></rss>