<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[u013817721的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/u013817721</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; u013817721]]></copyright><item><title><![CDATA[记录一个内存溢出问题的排查]]></title><link>https://blog.youkuaiyun.com/u013817721/article/details/135998846</link><guid>https://blog.youkuaiyun.com/u013817721/article/details/135998846</guid><author>u013817721</author><pubDate>Fri, 02 Feb 2024 18:15:13 +0800</pubDate><description><![CDATA[概要页面上有个内存异常信息，后面是个链接，点一下就能定位到内存溢出的代码和方法地方。且到类视图，可以看到大对象是谁，如果不好判断是哪个对象，我们在点击具体对象去看看对象里面的内容，我们就可以知道哪个方法哪个对象导致了内存溢出。我们这块只是记录一个分析线程溢出的思路。如果内存溢出的话我们可以在JDK8\lib\visualvm\etc\visualvm.conf去调整内存的大小。1、现场有内存溢出的文件java_pid119161.hprof文件，大概10G。导入的时候会比较慢，甚至内存溢出。]]></description><category></category></item><item><title><![CDATA[老项目整合Feign，清爽的实现项目与项目之间的接口调用【简易】]]></title><link>https://blog.youkuaiyun.com/u013817721/article/details/131372307</link><guid>https://blog.youkuaiyun.com/u013817721/article/details/131372307</guid><author>u013817721</author><pubDate>Sun, 25 Jun 2023 10:36:07 +0800</pubDate><description><![CDATA[feign 老项目整合]]></description><category></category></item><item><title><![CDATA[pgsql查看锁表（pg查询锁表并删除）]]></title><link>https://blog.youkuaiyun.com/u013817721/article/details/130503110</link><guid>https://blog.youkuaiyun.com/u013817721/article/details/130503110</guid><author>u013817721</author><pubDate>Fri, 05 May 2023 11:24:28 +0800</pubDate><description><![CDATA[与” ROW SHARE, ROW EXCLUSIVE, SHARE UPDATE EXCLUSIVE, SHARE, SHARE ROW EXCLUSIVE, EXCLUSIVE, ACCESS EXCLUSIVE”模式冲突,这种索模式仅能与Access Share 模式并发,换句话说，只有读操作可以和持有”EXCLUSIVE”锁的事务并行；查询命令（Select command）将会在它查询的表上获取”Access Shared” 锁,一般地，任何一个对表上的只读查询操作都将获取这种类型的锁。]]></description><category></category></item><item><title><![CDATA[PGSQL查询出所有索引]]></title><link>https://blog.youkuaiyun.com/u013817721/article/details/130490486</link><guid>https://blog.youkuaiyun.com/u013817721/article/details/130490486</guid><author>u013817721</author><pubDate>Thu, 04 May 2023 16:50:51 +0800</pubDate><description><![CDATA[CTRL  +F  找到 INDEX    加上  IF NOT EXISTS  替换 然后整个可重复执行的索引重建脚本制作完成。]]></description><category></category></item><item><title><![CDATA[分析线程阻塞常用命令和步骤合集]]></title><link>https://blog.youkuaiyun.com/u013817721/article/details/130489213</link><guid>https://blog.youkuaiyun.com/u013817721/article/details/130489213</guid><author>u013817721</author><pubDate>Thu, 04 May 2023 16:13:10 +0800</pubDate><description><![CDATA[3、用 jvisualvm.exe打开文件分析状态是在deadlock或者blocked的案件。windows server  线程dump。1、查看服务的java进程id。]]></description><category></category></item><item><title><![CDATA[js判空和不为空]]></title><link>https://blog.youkuaiyun.com/u013817721/article/details/120222712</link><guid>https://blog.youkuaiyun.com/u013817721/article/details/120222712</guid><author>u013817721</author><pubDate>Fri, 10 Sep 2021 15:16:44 +0800</pubDate><description><![CDATA[以下是我在js判断中使用最多的默认方法，记录一下，后面可能有用
   exsitObject(value) {
            if (typeof(value) !== 'undefined' &amp;&amp; value !== null &amp;&amp; value !== '') {
                return true;
            }
            return false;
        },
        notExsitObjec]]></description><category></category></item><item><title><![CDATA[springboot 压缩多文件下载（没有整理，代码片段即看即会即用）]]></title><link>https://blog.youkuaiyun.com/u013817721/article/details/120222341</link><guid>https://blog.youkuaiyun.com/u013817721/article/details/120222341</guid><author>u013817721</author><pubDate>Fri, 10 Sep 2021 15:06:26 +0800</pubDate><description><![CDATA[关注核心代码为压缩下载即可，其余非核心代码选择忽略即可
/**
 * 获取下载头信息.
 *
 * @param fileName fileName
 * @return HttpServletResponse
 */
public static HttpServletResponse getHttpResponse(String fileName) {
    HttpServletResponse response = ArteryRequestUtil.getResponse();
    Asser]]></description><category></category></item><item><title><![CDATA[excel poi导入，数字和日期格式校验]]></title><link>https://blog.youkuaiyun.com/u013817721/article/details/119272045</link><guid>https://blog.youkuaiyun.com/u013817721/article/details/119272045</guid><author>u013817721</author><pubDate>Sat, 31 Jul 2021 10:33:53 +0800</pubDate><description><![CDATA[记得去戒毒项目补充



package com.thunisoft.scld.business.scgl.handler;



import java.lang.reflect.Field;

import java.text.MessageFormat;

import java.time.Instant;

import java.time.LocalDate;

import java.time.LocalDateTime;

import java.time.ZoneId;

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