<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[唯爱沁源的博客]]></title><description><![CDATA[一名小小程序猿]]></description><link>https://blog.youkuaiyun.com/a990914093</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; a990914093]]></copyright><item><title><![CDATA[input只能输入数字和小数点]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/130981990</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/130981990</guid><author>a990914093</author><pubDate>Thu, 01 Jun 2023 09:43:11 +0800</pubDate><description><![CDATA[本文是可以精确到小数点后5位。]]></description><category></category></item><item><title><![CDATA[Oracle中表关联的序列和触发器]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/130195012</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/130195012</guid><author>a990914093</author><pubDate>Mon, 17 Apr 2023 10:43:50 +0800</pubDate><description><![CDATA[where t.TABLE_NAME = '自己的表名' and d.REFERENCED_TYPE = 'SEQUENCE']]></description><category></category></item><item><title><![CDATA[修改电脑C:\User\用户名文件夹的名字]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/128238937</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/128238937</guid><author>a990914093</author><pubDate>Thu, 08 Dec 2022 16:20:56 +0800</pubDate><description><![CDATA[修改电脑C:\User\用户名文件夹的名字]]></description><category></category></item><item><title><![CDATA[JS下载文件]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/125891127</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/125891127</guid><author>a990914093</author><pubDate>Wed, 20 Jul 2022 14:11:42 +0800</pubDate><description><![CDATA[JS下载文件]]></description><category></category></item><item><title><![CDATA[IntelliJ IDEA快捷键大全 + 动图演示]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/125406034</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/125406034</guid><author>a990914093</author><pubDate>Wed, 22 Jun 2022 11:30:05 +0800</pubDate><description><![CDATA[IntelliJ IDEA快捷键大全 + 动图演示]]></description><category></category></item><item><title><![CDATA[Oracle和MySQL插入数据后返回主键ID]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/125059771</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/125059771</guid><author>a990914093</author><pubDate>Tue, 31 May 2022 10:31:40 +0800</pubDate><description><![CDATA[一、MySQL

1、mybatis.xml配置

在insert标签中添加两个属性useGeneratedKeys="true"和keyProperty="id"，其中keyProperty中的id为自己表的主键字段

&lt;insert id="" useGeneratedKeys="true" keyProperty="id"&gt;&lt;/insert&gt;

2、取值

在Controller或者ServiceImpl中直接用插入对象的get方法

二、Oracle

1、通过序列自增长

]]></description><category></category></item><item><title><![CDATA[input正则输入]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/124417342</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/124417342</guid><author>a990914093</author><pubDate>Mon, 25 Apr 2022 23:28:52 +0800</pubDate><description><![CDATA[input正则输入]]></description><category></category></item><item><title><![CDATA[批量添加报ora-00918错误]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/124295034</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/124295034</guid><author>a990914093</author><pubDate>Wed, 20 Apr 2022 13:14:25 +0800</pubDate><description><![CDATA[批量添加报ora-00918错误]]></description><category></category></item><item><title><![CDATA[JSP页面多选框根据返回值（以逗号分隔字符串/集合）显示选中状态]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/121926908</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/121926908</guid><author>a990914093</author><pubDate>Tue, 14 Dec 2021 14:46:41 +0800</pubDate><description><![CDATA[JSP页面多选框根据返回值（以逗号分隔字符串/集合）显示选中状态]]></description><category></category></item><item><title><![CDATA[SpringBoot 2.X 版本整合Hystrix Dashboard踩坑解决]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/113973389</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/113973389</guid><author>a990914093</author><pubDate>Tue, 23 Feb 2021 10:00:27 +0800</pubDate><description><![CDATA[https://blog.youkuaiyun.com/qq_42747249/article/details/111315222?utm_medium=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromMachineLearnPai2-1.control&amp;dist_request_id=725e617d-f6fe-4b75-96c7-da6c85ade267&amp;depth_1-utm_source=distribute.pc_relevant]]></description><category></category></item><item><title><![CDATA[spring Boot+Mybatis-Plus+Maven简单配置]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/113172924</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/113172924</guid><author>a990914093</author><pubDate>Tue, 26 Jan 2021 10:43:38 +0800</pubDate><description><![CDATA[1、eclipse-new--》SpringStarterProject，或者new--》other.....--》搜索spring--》SpringStarterProject





2、选择jdk版本（我的是jdk1.8），打包类型（jar），语言（java）



3、选择导入的springboot版本以及所需jar，可以省略此步骤，点击finish



IDEA同理







4、eclipse创建的SpringBoot项目pom.xml的第一行也许会报错，加上以下代码，之后选中项...]]></description><category></category></item><item><title><![CDATA[Oracle 单表A字段相同，B字段不同，去重查询]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/112467537</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/112467537</guid><author>a990914093</author><pubDate>Mon, 11 Jan 2021 14:30:32 +0800</pubDate><description><![CDATA[表table

ID  orderNo  status

1  123       20

2  123       21

3  456       20

4  456       21

5  789      21



目标：orderNo相同的情况下只展示status = 20的数据

ID  orderNo  status

1  123     ...]]></description><category></category></item><item><title><![CDATA[创建自定义POST请求方法]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/112302489</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/112302489</guid><author>a990914093</author><pubDate>Thu, 07 Jan 2021 09:28:34 +0800</pubDate><description><![CDATA[//必要参数 url 和 reqdata，其中reqdata是json字符串类型的参数，sign 秘钥参数可有可无
public static String httpPost(String url, String reqdata, String sign) {

		String responseContent = null;
		CloseableHttpClient httpclient = HttpClients.createDefault();
		try {
			HttpPost httpPo.]]></description><category></category></item><item><title><![CDATA[创建自定义接收接口]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/112302207</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/112302207</guid><author>a990914093</author><pubDate>Thu, 07 Jan 2021 09:19:48 +0800</pubDate><description><![CDATA[一、创建接口接收实体类

请求报文样例


request:
{
   "pubInfo"         : 
  {
        "transactionId"   : "",
        "transactionTime" : "",
        "channelId"            : "",
        "clientIP"        : "",
        "opId"            : "",
        "orgId"           : ""]]></description><category></category></item><item><title><![CDATA[关于spring配置文件中读取${username}为系统当前用户名的问题]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/109715040</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/109715040</guid><author>a990914093</author><pubDate>Mon, 16 Nov 2020 10:22:02 +0800</pubDate><description><![CDATA[在启动eclipse项目的时候报错



这个错误证明连接的 url 是正确的，只是用户名和密码至少一个错误，经过一番查找，发现spring读取的username的值是电脑的用户名

简单测试：

在连接数据库的密码下面配置

&lt;!-- 初始化连接大小 --&gt;
&lt;property name="initialSize" value="1" /&gt;



将 initialSize的值改为${test}username} ，测试，看看日志中读取的是什么值

原因：

在配置读取数据...]]></description><category></category></item><item><title><![CDATA[Redis从零到掌握学习整理]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/109290520</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/109290520</guid><author>a990914093</author><pubDate>Wed, 28 Oct 2020 14:19:29 +0800</pubDate><description><![CDATA[官方网站：https://redis.io/

中文官网：http://www.Redis.net.cn

Redis命令参考：http://redisdoc.com/

1、NoSQL简介

1.1、NoSQL（Not OnlySQL），不仅仅是是数据库，泛指非关系型数据库，以简单的key-value形式存储

不支持ACID（事务的四个特性，原子性、一致性、隔离性、持久性）
	不遵循SQL标准。指不用写SQL就可以存储
	远超SQL性能
1.2、适用场景

对数据的高并发的读写操作
	海量数据读写
	.]]></description><category></category></item><item><title><![CDATA[START WITH和CONNECT BY的用法，树状结构表查询]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/108648423</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/108648423</guid><author>a990914093</author><pubDate>Thu, 17 Sep 2020 17:30:38 +0800</pubDate><description><![CDATA[该函数是查询多条记录中有父子关系的数据，例如：一张目录表中，有该目录的编码和该目录的父级编码


FROM table t 
START WITH t.该目录编码字段=该目录编码 
CONNECT BY t.该目录父级编码字段 = PRIOR t.该目录编码字段

这个SQL意义为：查询该目录及其子目录，


select * from table
start with org_id = ‘123’
connect by prior org_id = parent_id;

简单说来是将一个树状结构存储在一]]></description><category></category></item><item><title><![CDATA[如何打开本地资源组策略]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/107107804</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/107107804</guid><author>a990914093</author><pubDate>Fri, 03 Jul 2020 16:05:28 +0800</pubDate><description><![CDATA[1、win+R--在打开的运行窗口中输入命令gpedit.msc



2、win+S--输入“组策略”，选择最佳匹配中的选项


]]></description><category></category></item><item><title><![CDATA[如何删除你在文件夹搜索框中的记录]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/107107481</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/107107481</guid><author>a990914093</author><pubDate>Fri, 03 Jul 2020 16:02:43 +0800</pubDate><description><![CDATA[很多时候我们都会在某些特定的文件夹里找文件，采用的方法就是在右上角的搜索框里输入想要找的东西的名字，但是往往电脑会记录下你搜索的内容

解决：

一：

1、鼠标左键点击搜索框，出现一些异以往的搜索记录

2、将鼠标的光标（箭头）放到记录上（不需要点击），在键盘上找“DEL”（或者“delete”）键，点击这个就可以了

二、

1、win+R打开运行

2、输入gpedit.msc 打开 本地策略组编辑器

3、依次打开 用户配置--windows组件--文件资源管理器

4、点击文件资源管理器--找到 ]]></description><category></category></item><item><title><![CDATA[Win10怎么删除快速访问中最近使用文件记录]]></title><link>https://blog.youkuaiyun.com/a990914093/article/details/107107215</link><guid>https://blog.youkuaiyun.com/a990914093/article/details/107107215</guid><author>a990914093</author><pubDate>Fri, 03 Jul 2020 15:49:00 +0800</pubDate><description><![CDATA[红框位置总是显示你最近访问过的文件夹，想要删除这些文件夹怎么办呢?

解决：

打开“我的电脑”--“查看”--“选项”



在文件夹选项中，找到“隐私”框，将两个“√”去掉，点击清除按钮，解决


...]]></description><category></category></item></channel></rss>