<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[qaz1wsx2edc的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/qaz1wsx2edc</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; qaz1wsx2edc]]></copyright><item><title><![CDATA[idea启动 insufficient memory记录]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/144127184</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/144127184</guid><author>qaz1wsx2edc</author><pubDate>Fri, 29 Nov 2024 09:19:52 +0800</pubDate><description><![CDATA[idea insufficient memoryi记录]]></description><category></category></item><item><title><![CDATA[Flowable的学习一]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/140550935</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/140550935</guid><author>qaz1wsx2edc</author><pubDate>Fri, 19 Jul 2024 16:03:27 +0800</pubDate><description><![CDATA[flowable的学习，flow表之间的联动]]></description><category></category></item><item><title><![CDATA[String.split丢失结尾空字符串的问题]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/74983671</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/74983671</guid><author>qaz1wsx2edc</author><pubDate>Fri, 19 Jul 2024 15:27:57 +0800</pubDate><description><![CDATA[java中的split函数用于将字符串分割为字符数组是很方便的，但由于不是很熟悉，犯了错误


如下：


String strtest	= "1,2,";
String[] arry	= strtest.split(",");
这样 arry 的长度是 2 
但是我们想保存 逗号 后面的 空字符串]]></description><category></category></item><item><title><![CDATA[Maven Dependencies missing jar 解决]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/140259417</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/140259417</guid><author>qaz1wsx2edc</author><pubDate>Mon, 08 Jul 2024 09:34:18 +0800</pubDate><description><![CDATA[如果此时依然有 missing的jar，按照 buildpath 提示的 jar包missing 路径，去 maven 本地仓库中对应位置，删 掉 该 jar 包的 xxx.lastUpdated 文件，之后，再重新执行 项目右键maven->update project。如果还有 missing 的jar，再项目右键maven->update project，但是这次勾选 Force Update ...那一行，再OK。项目右键maven->update project。]]></description><category></category></item><item><title><![CDATA[Chrome开发者模式去除时间轴]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/134443826</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/134443826</guid><author>qaz1wsx2edc</author><pubDate>Thu, 16 Nov 2023 15:54:08 +0800</pubDate><description><![CDATA[Chrome开发者模式去除时间轴]]></description><category></category></item><item><title><![CDATA[maven添加本地jar到仓库]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/79272948</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/79272948</guid><author>qaz1wsx2edc</author><pubDate>Tue, 06 Feb 2018 17:40:57 +0800</pubDate><description><![CDATA[mvn install:install-file -Dfile=E:\\jar\\FpPoi-0.0.1.jar -DgroupId=com.rtmap -DartifactId=FpPoi -Dversion=0.0.1 -Dpackaging=jar 
-Dfile: jar包的本地路径]]></description><category></category></item><item><title><![CDATA[tomcat log相对路径的说明]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/78964352</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/78964352</guid><author>qaz1wsx2edc</author><pubDate>Wed, 03 Jan 2018 18:52:16 +0800</pubDate><description><![CDATA[参考:http://blog.youkuaiyun.com/awj321000/article/details/42486599]]></description><category></category></item><item><title><![CDATA[GC内存回收]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/78963865</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/78963865</guid><author>qaz1wsx2edc</author><pubDate>Wed, 03 Jan 2018 17:48:59 +0800</pubDate><description><![CDATA[参考:   http://blog.youkuaiyun.com/aoxida/article/details/45061571

http://blog.youkuaiyun.com/lojze_ly/article/details/49456255]]></description><category></category></item><item><title><![CDATA[Linux启动tomcat慢 解决方法]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/78841972</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/78841972</guid><author>qaz1wsx2edc</author><pubDate>Tue, 19 Dec 2017 14:03:58 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[String.split丢失结尾空字符串的问题]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/74983808</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/74983808</guid><author>qaz1wsx2edc</author><pubDate>Tue, 11 Jul 2017 16:30:30 +0800</pubDate><description><![CDATA[String strtest	= "1,2,";
String[] arry	= strtest.split(",");此时  arry 的长度是 2 
如果想保存 2后面 逗号 后面的 空字符串
如果不想让结尾的空字符串被丢弃，那么应该这样写：String strtest	= "1,2,";
String[] array = strtest.split(",", -1);
这样 ，后面的就]]></description><category></category></item><item><title><![CDATA[linux 下配置的定时任务 crontab]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/73480214</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/73480214</guid><author>qaz1wsx2edc</author><pubDate>Tue, 20 Jun 2017 09:23:25 +0800</pubDate><description><![CDATA[crontab -l 查看定时
crontab -e 修改定时

vim  /etc/crontab  查看定时规则




0 5 * * * /rtmap/appserver/big_data_log_shift/data.sh
每天早上 5点执行这个 .sh文件




配置时间 可以 在线crontab  试试规则，查看规则的正确否。
http://www.a]]></description><category></category></item><item><title><![CDATA[spring 配置定时task任务]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/72846014</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/72846014</guid><author>qaz1wsx2edc</author><pubDate>Fri, 02 Jun 2017 17:09:56 +0800</pubDate><description><![CDATA[今天做spring 定时任务 ，但是每次 定时都是走两次， 看网上说是系统初始化的时候 ，实例化了两遍。
大概的配置文件截图 如下。





web.xml 加载的时候  初始化了 applicationContext.xml。
applicationContext.xml 里面 引入了 spring-config-task.xml







定时的配置   ]]></description><category></category></item><item><title><![CDATA[mysql 存在就插入，存在就更新]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/72834101</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/72834101</guid><author>qaz1wsx2edc</author><pubDate>Thu, 01 Jun 2017 18:29:33 +0800</pubDate><description><![CDATA[INSERT INTO table (a,b,c) VALUES (1,2,3) ON DUPLICATE KEY UPDATE c=c+1; 






INSERT ... SELECTINSERT ... ON DUPLICATE KEY UPDATEINSERT ... ON DUPLICATE REPLACE]]></description><category></category></item><item><title><![CDATA[分组取每组最大的值]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/72833754</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/72833754</guid><author>qaz1wsx2edc</author><pubDate>Thu, 01 Jun 2017 17:54:40 +0800</pubDate><description><![CDATA[分组 取每组 设备的最后一次出现时间
SELECT MAX(FROM_UNIXTIME(locate_time/1000,'%Y-%m-%d')) mydate,device_id,poi_info FROM `device_position` GROUP BY device_id]]></description><category></category></item><item><title><![CDATA[Java：对double值进行四舍五入，保留两位小数的几种方法]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/72829089</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/72829089</guid><author>qaz1wsx2edc</author><pubDate>Thu, 01 Jun 2017 10:47:38 +0800</pubDate><description><![CDATA[今天做功能 要多经纬度做小数点后6位的限制
一开始 是用小数点截取法 来弄， 感觉 代码有点多，


后来网上百度了下， 还真有类是的
一下是针对 double 数据的 格式化，
    public static double formatDouble1(double d) {
        return (double)Math.round(d*100)/100;
    }]]></description><category></category></item><item><title><![CDATA[linux mysql出现乱码问题]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/71710276</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/71710276</guid><author>qaz1wsx2edc</author><pubDate>Fri, 12 May 2017 10:53:45 +0800</pubDate><description><![CDATA[部署服务器linux 数据导入后，拉取出来的实话 乱码，
各种测试 
在 jdbc 连接的时候 在 


jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/serviceApi?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=t]]></description><category></category></item><item><title><![CDATA[linux 配置redis]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/71206958</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/71206958</guid><author>qaz1wsx2edc</author><pubDate>Fri, 05 May 2017 14:50:57 +0800</pubDate><description><![CDATA[redis 的压缩包解压后，


要 执行下 make 命令， 编译下， 


然后 在 src 目录下  有 redis-server , 这就是启动redis 的命令 
加 & 的原因是  让 redis 后台执行， 不然 就是当前窗口启动，  一但窗户关闭， redis 就停止了





redis 启动 如下图。




查看redis 进程  ：]]></description><category></category></item><item><title><![CDATA[linux 对一个目录及其子目录所有文件添加权限]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/71128953</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/71128953</guid><author>qaz1wsx2edc</author><pubDate>Wed, 03 May 2017 17:30:55 +0800</pubDate><description><![CDATA[转摘地址：http://blog.youkuaiyun.com/u014175572/article/details/50946471
感谢这位朋友的 这个命令]]></description><category></category></item><item><title><![CDATA[tomcat启动报错 connectException]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/71088910</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/71088910</guid><author>qaz1wsx2edc</author><pubDate>Tue, 02 May 2017 18:26:57 +0800</pubDate><description><![CDATA[今天弄服务器， 启动tomcat 爆出错了， 
启动居然连接被拒绝，
一下就慌了， 


以为是部署的 什么配置错了， 各种百度











后来看到 有人这样说， 
在看下 我上面的命令 ， 我突然明白了， 
我习惯命令 上来都是 先shutdown 下， 但是这是一个新的服务器， 之前是没有启动tomcat 的， 


唉 脑子没转过来，]]></description><category></category></item><item><title><![CDATA[mysql 修改root密码]]></title><link>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/70229309</link><guid>https://blog.youkuaiyun.com/qaz1wsx2edc/article/details/70229309</guid><author>qaz1wsx2edc</author><pubDate>Tue, 18 Apr 2017 16:05:58 +0800</pubDate><description><![CDATA[mysql 修改root密码]]></description><category></category></item></channel></rss>