<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[crf_c的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/crf_c</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; crf_c]]></copyright><item><title><![CDATA[Oracle常用sql]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/134719831</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/134719831</guid><author>crf_c</author><pubDate>Thu, 30 Nov 2023 19:30:22 +0800</pubDate><description><![CDATA[Oracle常用sql,（长期更新，备忘录）]]></description><category></category></item><item><title><![CDATA[一种通过nacos动态配置实现多租户的log4j2日志物理隔离的设计]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/129285885</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/129285885</guid><author>crf_c</author><pubDate>Sat, 04 Mar 2023 20:28:46 +0800</pubDate><description><![CDATA[基于nacos和log4j实现多租户日志隔离]]></description><category></category></item><item><title><![CDATA[记一次CPU占用持续上升问题排查（Nacos动态路由引起）]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/129179406</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/129179406</guid><author>crf_c</author><pubDate>Tue, 28 Feb 2023 17:34:01 +0800</pubDate><description><![CDATA[Nacos 导致的 CPU 飙高问题 !]]></description><category></category></item><item><title><![CDATA[初始化安装后 Nacos 动态路由配置不生效]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/128789947</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/128789947</guid><author>crf_c</author><pubDate>Mon, 30 Jan 2023 13:19:57 +0800</pubDate><description><![CDATA[1、每次初始化安装整套项目，包括安装 Nacos 和其他服务还有mysql,redis等其他中间件，安装后 Nacos 获取不到 nacos 路由信息（包括后续新写入动态路由配置）！只有手动重启 Nacos 服务后，才会生效，后续更新的动态路由配置也会正常；]]></description><category></category></item><item><title><![CDATA[多租户改造（字段隔离和表隔离混合模式）]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/127070089</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/127070089</guid><author>crf_c</author><pubDate>Tue, 27 Sep 2022 14:08:05 +0800</pubDate><description><![CDATA[字段隔离为主，表隔离为辅实现多租户改造]]></description><category></category></item><item><title><![CDATA[springboot修改上传文件大小限制（异常为：The field file exceeds its maximum permitted size of 1048576 bytes）]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/123869538</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/123869538</guid><author>crf_c</author><pubDate>Thu, 31 Mar 2022 13:19:57 +0800</pubDate><description><![CDATA[使用的springboot2.3.0版本

在application.yml 中添加


# Spring配置
spring:
  servlet:
    multipart:
      # 单个文件的最大值
      max-file-size: 100MB
      # 上传文件总的最大值
      max-request-size: 100MB
      #默认是开启，需要关闭否则与其它上传控件冲突
      enabled: true
      #延迟处理，并不生效
      re]]></description><category></category></item><item><title><![CDATA[正则表达式工具类]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/123276079</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/123276079</guid><author>crf_c</author><pubDate>Fri, 04 Mar 2022 14:26:50 +0800</pubDate><description><![CDATA[正则java工具类]]></description><category></category></item><item><title><![CDATA[DateUtils 工具类（封装一些关于时间的操作）]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/123275373</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/123275373</guid><author>crf_c</author><pubDate>Fri, 04 Mar 2022 14:01:02 +0800</pubDate><description><![CDATA[package com.test.common.util;

import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.ti.]]></description><category></category></item><item><title><![CDATA[Idea设置远程debug]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/122714647</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/122714647</guid><author>crf_c</author><pubDate>Thu, 27 Jan 2022 11:46:45 +0800</pubDate><description><![CDATA[1、在tomcat配置文件 apache-tomcat-8.5.56/bin/catalina.sh 第一行添加以下语句：


//12345为远程连接端口，可自己设置
CATALINA_OPTS="-server -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=12345"



2、idea中设置远程连接

选择Edit Configurations

选择R.]]></description><category></category></item><item><title><![CDATA[map,list使用Lambda方式遍历]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/122714450</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/122714450</guid><author>crf_c</author><pubDate>Thu, 27 Jan 2022 11:20:20 +0800</pubDate><description><![CDATA[1、map遍历


//map用法
Map&lt;String, Object&gt; map = new HashMap&lt;&gt;();
map.put("a", "valuea");
map.put("b", "valueb");
map.put("c", "valuec");
map.put("d", "valued");
map.put("e", "valuee");
map.forEach((K, V) -&gt; {
    System.out.println(K + "======" ]]></description><category></category></item><item><title><![CDATA[EL表达式]]></title><link>https://blog.youkuaiyun.com/crf_c/article/details/116262069</link><guid>https://blog.youkuaiyun.com/crf_c/article/details/116262069</guid><author>crf_c</author><pubDate>Thu, 29 Apr 2021 10:34:07 +0800</pubDate><description><![CDATA[EL表达式EL表达式一.简介1.EL表达式：2.语法二.EL表达式使用1.支持算术运算2.支持关系运算3.支持逻辑运算符4.判断是否为null和是否为空5.支持三目运算符6.访问对象三.JSTL(Javaserver page Standard Tag Library)1.foreach
EL表达式
一.简介
1.EL表达式：
Expression Language主要作用是获取保存在作用域当中的数据
2.语法
${作用域当中的key}，例如在request中封装数据name
//request中封装数据
]]></description><category></category></item></channel></rss>