<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[IT_LPF的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/IT_LPF</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; IT_LPF]]></copyright><item><title><![CDATA[防重和幂等的区别]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/124766095</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/124766095</guid><author>IT_LPF</author><pubDate>Sat, 14 May 2022 11:46:08 +0800</pubDate><description><![CDATA[（1）防重
防重的目的是防止重复数据的产生，比如save操作时，用户快速点击两次，如果没做防重，就会产生重复数据。
（2）幂等
比如请求多次，只有第一次请求才会做数据处理，后面的请求不会产生数据改变，例如退款接口，第一次退款成功后，后面的请求，不会再次退款成功。
再例如：支付回调接口，回调多次，第一次执行业务逻辑，往后的请求进行拦截

...]]></description><category></category></item><item><title><![CDATA[IDEA2021.1汉化教程]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/122631643</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/122631643</guid><author>IT_LPF</author><pubDate>Sat, 22 Jan 2022 00:01:27 +0800</pubDate><description><![CDATA[打开 Settings -&gt; Plugins

2.点击下“marketplace”接着在输入框中输入“Chinese”后即可找到汉化插件，点击“install”进行下载

3.下载完成后点击“restart ide”——“restart”



]]></description><category></category></item><item><title><![CDATA[windows安装mysql]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/122179803</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/122179803</guid><author>IT_LPF</author><pubDate>Mon, 27 Dec 2021 20:23:59 +0800</pubDate><description><![CDATA[https://www.cnblogs.com/itcui/p/15511683.html

]]></description><category></category></item><item><title><![CDATA[Navicat连接远程Oracle数据库显示：“ORA-28040：没有匹配的验证协议”]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/121622054</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/121622054</guid><author>IT_LPF</author><pubDate>Mon, 29 Nov 2021 23:05:15 +0800</pubDate><description><![CDATA[转载：https://www.freesion.com/article/5312913744/

]]></description><category></category></item><item><title><![CDATA[linux修改用户密码]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/120534140</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/120534140</guid><author>IT_LPF</author><pubDate>Tue, 28 Sep 2021 17:49:15 +0800</pubDate><description><![CDATA[1.使用CRT终端工具连接Linux
2.输入passwd命令

3.输入当前用户的老密码

4.输入新密码

5.再次输入新密码
6.修改成功


]]></description><category></category></item><item><title><![CDATA[oracle根据多个字段删除重复记录]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/120525242</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/120525242</guid><author>IT_LPF</author><pubDate>Tue, 28 Sep 2021 11:13:41 +0800</pubDate><description><![CDATA[根据GOODS_NUMBER,USER_ID分组, 然后组内根据CREATED_DATE排序,生成每条记录的排序号rn,取每组中rn&gt;1的记录为重复记录, 最后根据id删除

delete HNZSX_ORDER WHERE id in 
(
 select id from (
    select t.*, row_number() over(partition by GOODS_NUMBER,USER_ID order by CREATED_DATE desc) rn from H...]]></description><category></category></item><item><title><![CDATA[notepad++的下载及安装HEX-Editor插件]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/119110677</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/119110677</guid><author>IT_LPF</author><pubDate>Mon, 26 Jul 2021 15:36:56 +0800</pubDate><description><![CDATA[1. 网盘资源:https://pan.baidu.com/s/1JkcdY7ub0NHXBzZefeqxpg
提取码:z6ub
一个是notepad++的压缩包,还有一个是HEX-Editor的插件

2.安装notepad++后，在安装目录下的plugins下新建一个HexEditor文件夹，把“HexEditor.dll”插件拷贝到HexEditor目录下。



3.用notepad++打开class文件后，在插件选项选中HEXEditor的View in HEX，就可以看到字节码的二进制内容了。.]]></description><category></category></item><item><title><![CDATA[前端url传递数据编码问题]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/117021400</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/117021400</guid><author>IT_LPF</author><pubDate>Wed, 19 May 2021 11:25:07 +0800</pubDate><description><![CDATA[有些符号在URL中是不能直接传递的，如果要在URL中传递这些特殊符号，那么就要使用他们的编码了

可以使用 encodeURIComponent方法进行编码

案例：


window.parent.frames.location.href=getRootPath()+"/terminalInfo/index.do?encryptedStr="+encodeURIComponent(encryptedStr)+"&amp;sign="+sign+"&amp;data="+encodeURIComponent]]></description><category></category></item><item><title><![CDATA[javac或javap提示不是内部或外部命令]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/116205634</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/116205634</guid><author>IT_LPF</author><pubDate>Tue, 27 Apr 2021 17:17:20 +0800</pubDate><description><![CDATA[https://www.cnblogs.com/king8/p/10797075.html
]]></description><category></category></item><item><title><![CDATA[Springboot单元测试]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/113363557</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/113363557</guid><author>IT_LPF</author><pubDate>Fri, 29 Jan 2021 09:06:18 +0800</pubDate><description><![CDATA[第一步：引入依赖


&lt;dependency&gt;
   &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
   &lt;artifactId&gt;spring-boot-starter-test&lt;/artifactId&gt;
   &lt;scope&gt;test&lt;/scope&gt;
&lt;/dependency&gt;

&lt;dependency&gt;
   &lt;groupId&gt;junit&lt;]]></description><category></category></item><item><title><![CDATA[Spring Initializr 报错:Initialization failed for ‘https://start.spring.io‘]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/113358613</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/113358613</guid><author>IT_LPF</author><pubDate>Thu, 28 Jan 2021 21:15:53 +0800</pubDate><description><![CDATA[报错如下：





解决办法:

第一步:
打开idea最上角file选项的Settings…



第二步:
搜索HTTP Proxy–&gt;勾选Automatic proxy configuration URL:
–&gt;输入https://start.spring.io/–&gt;点击Auto-detect proxy settings
–&gt;输入https://start.spring.io/ --&gt;点击ok;





第三步：

重启idea，这步很重要，我之前就是因为没重启..]]></description><category></category></item><item><title><![CDATA[小程序中 var，let，const用法详解]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/112917958</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/112917958</guid><author>IT_LPF</author><pubDate>Thu, 21 Jan 2021 10:33:35 +0800</pubDate><description><![CDATA[1.Var命令

var申明的变量是全局变量，其作用域为所在的函数内。如下图1所示
	var命令会发生”变量提升“现象，即变量可以在声明之前使用。如下图2所示


2.Let命令



let声明的变量是局部变量，该变量只会在最靠近{ }内的范围有效，出了{}之后，该变量就不能用了，否则会报该变量未定义的错误。
	let声明的变量只在它所在的代码块有效。
	for循环的计数器，就很合适使用let命令。
	let不允许在相同作用域内，重复声明同一个变量






3.Const命令

const声明一...]]></description><category></category></item><item><title><![CDATA[redis加入到Windows服务]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/112915873</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/112915873</guid><author>IT_LPF</author><pubDate>Thu, 21 Jan 2021 09:04:26 +0800</pubDate><description><![CDATA[1.打开dos命令行

  打开dos命令行，进入redis目录

2.安装命令

 redis-server.exe--service-installredis.windows.conf--loglevelverbose



3.卸载命令

 redis-server--service-uninstall
]]></description><category></category></item><item><title><![CDATA[IDEA用tomcat部署maven项目]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/112513689</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/112513689</guid><author>IT_LPF</author><pubDate>Tue, 12 Jan 2021 11:31:19 +0800</pubDate><description><![CDATA[https://jingyan.baidu.com/article/4ae03de3e120de3eff9e6b86.html
]]></description><category></category></item><item><title><![CDATA[Navicat连接Mysql报错：Client does not support authentication protocol requested by server；]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/112172339</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/112172339</guid><author>IT_LPF</author><pubDate>Mon, 04 Jan 2021 12:30:38 +0800</pubDate><description><![CDATA[这是由于加密规则不一致导致的报错，将加密规则改成mysql_native_password就行了，具体解决方案如下：



再重新用navicat连接就行了。
]]></description><category></category></item><item><title><![CDATA[redis哨兵模式搭建和测试]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/110468940</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/110468940</guid><author>IT_LPF</author><pubDate>Wed, 02 Dec 2020 09:47:53 +0800</pubDate><description><![CDATA[https://www.jianshu.com/p/06ab9daf921d
]]></description><category></category></item><item><title><![CDATA[Linux查看磁盘空间]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/107779882</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/107779882</guid><author>IT_LPF</author><pubDate>Wed, 23 Sep 2020 12:35:18 +0800</pubDate><description><![CDATA[https://www.runoob.com/w3cnote/linux-view-disk-space.html
]]></description><category></category></item><item><title><![CDATA[Navicat连接本地oracle数据库]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/108747474</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/108747474</guid><author>IT_LPF</author><pubDate>Wed, 23 Sep 2020 10:22:59 +0800</pubDate><description><![CDATA[1.我们新建一个oracle的连接



2.在这里我起名为oracle，当然，这个可以随便你喜欢去起名字，同时输入用户名和密码，跟刚刚的一样



3.在高级选项里面



4.到现在这样子如果你直接连接的话肯定是不行的，会不成功

还有一步是很关键的，就是配置oci.dll文件





这里选择你安装oracle目录下的bin文件夹里面的oci.dll文件,
我的路径是 E:\software\oracle\Oracle_win64\product\11.2.0\dbhome_1\BIN\oci...]]></description><category></category></item><item><title><![CDATA[解决Docker启动Tomcat容器，访问404问题]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/107944963</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/107944963</guid><author>IT_LPF</author><pubDate>Tue, 11 Aug 2020 21:27:14 +0800</pubDate><description><![CDATA[进入Tomcat的目录


# docker exec -it c110e319cdd1(启动的Tomcat容器的容器id) /bin/bash

使用命令查看当前文件夹内的所有文件


# ls -l

进入webapps文件夹下


# cd webapps

查看webapps下的文件


# ls -l

显示total 0，问题就出在这里，webapps文件夹下没有东西。

返回上一级目录


# cd ..

删除webapps文件夹（-r是级联删除,-f是强制删除，不然文件夹是删不掉的）


]]></description><category></category></item><item><title><![CDATA[安装RVM时报错 curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused]]></title><link>https://blog.youkuaiyun.com/IT_LPF/article/details/107661502</link><guid>https://blog.youkuaiyun.com/IT_LPF/article/details/107661502</guid><author>IT_LPF</author><pubDate>Wed, 29 Jul 2020 13:00:42 +0800</pubDate><description><![CDATA[1.打开hosts文件


 sudo vim /etc/hosts

2.在hosts文件中修改或者插入下面一行


199.232.28.133      raw.githubusercontent.com


3.接着回到外面一开始访问被拒的地方



然后请求加载：结果和过程如图


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