<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[CSYZA的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/CSYZA</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; CSYZA]]></copyright><item><title><![CDATA[mysql间隙锁与行锁分析与处理]]></title><link>https://blog.youkuaiyun.com/CSYZA/article/details/141031000</link><guid>https://blog.youkuaiyun.com/CSYZA/article/details/141031000</guid><author>CSYZA</author><pubDate>Thu, 08 Aug 2024 17:36:07 +0800</pubDate><description><![CDATA[间隙锁的定义：对于键值在条件范围内但并不存在的记录，即“间隙（GAP）”，InnoDB 会对这个“间隙”加锁。间隙锁的作用：防止幻读。]]></description><category></category></item><item><title><![CDATA[Mybatis-Plus的SQL注入器实现批量插入/修改，效率比较]]></title><link>https://blog.youkuaiyun.com/CSYZA/article/details/129352796</link><guid>https://blog.youkuaiyun.com/CSYZA/article/details/129352796</guid><author>CSYZA</author><pubDate>Sun, 12 Mar 2023 11:03:20 +0800</pubDate><description><![CDATA[Mybatis-Plus的自定义SQL注入器]]></description><category></category></item><item><title><![CDATA[java通过stream方式将字符串list转成整数list]]></title><link>https://blog.youkuaiyun.com/CSYZA/article/details/120674531</link><guid>https://blog.youkuaiyun.com/CSYZA/article/details/120674531</guid><author>CSYZA</author><pubDate>Sat, 09 Oct 2021 16:48:34 +0800</pubDate><description><![CDATA[直接上代码
	//Java 8 API添加了一个新的抽象称为流Stream，可以让我们以一种声明的方式处理数据。
	//可以通过Stream很方便将List&lt;String&gt; 转成List&lt;Integer &gt;
    public static void main(String[] args) {
        List&lt;String&gt; stringList = new ArrayList&lt;&gt;();
        stringList.add("100");]]></description><category></category></item><item><title><![CDATA[JAVA-通过Calendar获取报表按日、周、月分组的时间轴]]></title><link>https://blog.youkuaiyun.com/CSYZA/article/details/119790250</link><guid>https://blog.youkuaiyun.com/CSYZA/article/details/119790250</guid><author>CSYZA</author><pubDate>Thu, 19 Aug 2021 09:40:01 +0800</pubDate><description><![CDATA[在报表需求中，经常需要按日、周、月分组，但是如果某段时间没有对应的记录，时间轴会不连续
我们可以使用JAVA的Calendar来预设某段时间的时间轴
传入时间区间，获取轴
直接上 代码。

public class DateUtil {
	// 当然入参也可以换成localdate、date等类型，出参也可以换成月-日等

	 /**
     * 获取day1到day2的周间隔
     * @return
     */
    public static List&lt;String&gt; getW]]></description><category></category></item><item><title><![CDATA[使用restTemplate报java.net.URISyntaxException: Expected scheme-specific part at index 10: localhost:]]></title><link>https://blog.youkuaiyun.com/CSYZA/article/details/108566639</link><guid>https://blog.youkuaiyun.com/CSYZA/article/details/108566639</guid><author>CSYZA</author><pubDate>Sun, 13 Sep 2020 19:33:32 +0800</pubDate><description><![CDATA[路径错误，我这里是忘记在路径前加上http://

]]></description><category></category></item><item><title><![CDATA[usage: visudo [-chqsV] [-f sudoers]]]></title><link>https://blog.youkuaiyun.com/CSYZA/article/details/104697289</link><guid>https://blog.youkuaiyun.com/CSYZA/article/details/104697289</guid><author>CSYZA</author><pubDate>Fri, 06 Mar 2020 15:37:00 +0800</pubDate><description><![CDATA[最近在学习linux遇到的问题
解决：直接输入visudo命令即可，不需要后面跟文件名,后面什么参数也不加，否则会报这样的错误

]]></description><category></category></item><item><title><![CDATA[对对象的属性值进行校验，利用JAVA反射机制]]></title><link>https://blog.youkuaiyun.com/CSYZA/article/details/104675991</link><guid>https://blog.youkuaiyun.com/CSYZA/article/details/104675991</guid><author>CSYZA</author><pubDate>Thu, 05 Mar 2020 16:21:49 +0800</pubDate><description><![CDATA[代码如下
public class CheckUtil {
    //状态值只能为一位
    final static Integer ONE = 1;

    //记录日志
    private static org.apache.logging.log4j.Logger LOGGER = LogManager.getLogger(CheckUtil.class);

    /**
 ...]]></description><category></category></item><item><title><![CDATA[Vbox下挂载报错"mount: no medium found on /dev/sr0"]]></title><link>https://blog.youkuaiyun.com/CSYZA/article/details/104649657</link><guid>https://blog.youkuaiyun.com/CSYZA/article/details/104649657</guid><author>CSYZA</author><pubDate>Wed, 04 Mar 2020 11:21:25 +0800</pubDate><description><![CDATA[学习Linux时遇到这样一个问题，解决方法：Vbox右下角右键选择已有的虚拟光盘文件或从磁盘中选择一个新的虚拟光盘即可


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