<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[F945464的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/F945464</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; F945464]]></copyright><item><title><![CDATA[hadoop cdh 依赖 maven地址]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/126904453</link><guid>https://blog.youkuaiyun.com/F945464/article/details/126904453</guid><author>F945464</author><pubDate>Sat, 17 Sep 2022 13:37:57 +0800</pubDate><description><![CDATA[maven 地址]]></description><category></category></item><item><title><![CDATA[mysql 避免重复写入数据的三种方式]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/123989438</link><guid>https://blog.youkuaiyun.com/F945464/article/details/123989438</guid><author>F945464</author><pubDate>Wed, 06 Apr 2022 14:33:02 +0800</pubDate><description><![CDATA[mysql 避免重复写入数据的三种方式]]></description><category></category></item><item><title><![CDATA[flink checkpoint 保存数量]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/123557616</link><guid>https://blog.youkuaiyun.com/F945464/article/details/123557616</guid><author>F945464</author><pubDate>Thu, 17 Mar 2022 18:46:51 +0800</pubDate><description><![CDATA[flink checkpoint 使用]]></description><category></category></item><item><title><![CDATA[JVM GC日志分析]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/123183564</link><guid>https://blog.youkuaiyun.com/F945464/article/details/123183564</guid><author>F945464</author><pubDate>Mon, 28 Feb 2022 15:24:55 +0800</pubDate><description><![CDATA[JVM调优——之CMS GC日志分析 - babyblue - 博客园

GC(Allocation Failure)引发的一些JVM知识点梳理_淡定一生2333的博客-优快云博客_allocation failure
]]></description><category></category></item><item><title><![CDATA[log4j]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/122989923</link><guid>https://blog.youkuaiyun.com/F945464/article/details/122989923</guid><author>F945464</author><pubDate>Thu, 17 Feb 2022 19:05:38 +0800</pubDate><description><![CDATA[log4j.rootLogger=error, stdout

log4j.logger.org.apache.spark=WARN
log4j.logger.org.apache.kafka=WARN
log4j.logger.org.apache.parquet=INFO

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
.]]></description><category></category></item><item><title><![CDATA[mysql insert or update多表关联插入 Or 更新]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/119346283</link><guid>https://blog.youkuaiyun.com/F945464/article/details/119346283</guid><author>F945464</author><pubDate>Tue, 03 Aug 2021 11:34:39 +0800</pubDate><description><![CDATA[一、mysql的replace into语法
存在就先删除记录在插入更新，不存在直接插入
1、语法
	Mysql replace与replace into都是经常会用到的功能；
	replace其实是做了一次update操作，而不是先delete再insert；
	而replace into其实与insert into很像，但对于replace into，假如表中的一个旧记录与一个用于PRIMARY KEY或一个UNIQUE索引的新记录具有相同的值，则在新记录被插入之前，旧记录被删除。
	
--建表crea]]></description><category></category></item><item><title><![CDATA[java 字符串调用方法]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/118798938</link><guid>https://blog.youkuaiyun.com/F945464/article/details/118798938</guid><author>F945464</author><pubDate>Fri, 16 Jul 2021 14:53:01 +0800</pubDate><description><![CDATA[public class CallMethod {
/**
*
* @param obj 传进来的对象
* @param method1 方法名
* @param paramTypes 参数类型[]
* @param params 参数[]
* @return
*/
public static Object call(Object obj,String method1, Class[] paramTypes, Object[] params) {
try {
//加载类，参数是完整类名
//Class cl]]></description><category></category></item><item><title><![CDATA[IDEA 传参给args  怎么给mian args传参接受]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/116136554</link><guid>https://blog.youkuaiyun.com/F945464/article/details/116136554</guid><author>F945464</author><pubDate>Sun, 25 Apr 2021 20:46:57 +0800</pubDate><description><![CDATA[// 从外部命令中提取参数, 作为socket主机名和端口号
    val tool: ParameterTool = ParameterTool.fromArgs(args)
    val host: String = tool.get("host")
    val port: Int = tool.getInt("port")


]]></description><category></category></item><item><title><![CDATA[微软新版edge浏览器如何开启画中画模式 (微软新版edge)]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/115831177</link><guid>https://blog.youkuaiyun.com/F945464/article/details/115831177</guid><author>F945464</author><pubDate>Sun, 18 Apr 2021 15:29:17 +0800</pubDate><description><![CDATA[方法一

打开edge，地址栏输入edge://flags并回车，搜索标签Global，然后将全局媒体控制和画中画设置为Enabled，最后重启即可

方法二

添加扩展搜索Picture in Picture for every website添加画中画视频

Picture in Picture for every website


...]]></description><category></category></item><item><title><![CDATA[hbase 查看hfile的内容]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/115646956</link><guid>https://blog.youkuaiyun.com/F945464/article/details/115646956</guid><author>F945464</author><pubDate>Mon, 12 Apr 2021 23:17:10 +0800</pubDate><description><![CDATA[hbase hfile -v -p -m -f hdfs://localhost:9000/hbase/data/default/test/782d9564125bae4e0037e367626186b4/t1/44bd781271ef445ea5056ca632569611


]]></description><category></category></item><item><title><![CDATA[linux下安装locate命令]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/115582521</link><guid>https://blog.youkuaiyun.com/F945464/article/details/115582521</guid><author>F945464</author><pubDate>Sat, 10 Apr 2021 19:16:19 +0800</pubDate><description><![CDATA[yum install mlocate
	
	
	updatedb
	
	
	然后，在linux里使用和find一样的功能

	例如 find -name xx 
	
	
	locate xxx
	
]]></description><category></category></item><item><title><![CDATA[wagon-maven-plugin插件详解]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/115469419</link><guid>https://blog.youkuaiyun.com/F945464/article/details/115469419</guid><author>F945464</author><pubDate>Tue, 06 Apr 2021 20:13:05 +0800</pubDate><description><![CDATA[Maven项目 pop文件配置


&lt;build&gt;
        &lt;finalName&gt;MR&lt;/finalName&gt;
        &lt;plugins&gt;
            &lt;plugin&gt;
                &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt;
                &lt;artifactId&gt;wagon-maven-plugin&lt;/arti.]]></description><category></category></item><item><title><![CDATA[执行Linux自定义命令报错]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/115331991</link><guid>https://blog.youkuaiyun.com/F945464/article/details/115331991</guid><author>F945464</author><pubDate>Tue, 30 Mar 2021 18:01:18 +0800</pubDate><description><![CDATA[错误原因

这个文件在Windows 下编辑过，在Windows下每一行结尾是\n\r，而Linux下则是\n，所以才会有 多出来的\r。

修改错误

使用指令sed -i 's/\r$//' xxxxxxx.sh，上面的指令会把 xxxxxxx.sh 中的\r 替换成空白！
...]]></description><category></category></item><item><title><![CDATA[systemctl restart chronyd Linuxt 重启时间同步服务]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/115331547</link><guid>https://blog.youkuaiyun.com/F945464/article/details/115331547</guid><author>F945464</author><pubDate>Tue, 30 Mar 2021 17:41:59 +0800</pubDate><description><![CDATA[systemctl restart chronyd
]]></description><category></category></item><item><title><![CDATA[Apache 归档地址]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/115245483</link><guid>https://blog.youkuaiyun.com/F945464/article/details/115245483</guid><author>F945464</author><pubDate>Fri, 26 Mar 2021 15:03:51 +0800</pubDate><description><![CDATA[https://archive.apache.org/dist/
]]></description><category></category></item><item><title><![CDATA[Spring Boot 跟Junit进行集成测试]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/114092048</link><guid>https://blog.youkuaiyun.com/F945464/article/details/114092048</guid><author>F945464</author><pubDate>Thu, 25 Feb 2021 16:56:05 +0800</pubDate><description><![CDATA[&lt;!--junit单元测试的依赖--&gt;
    &lt;dependency&gt;
      &lt;groupId&gt;junit&lt;/groupId&gt;
      &lt;artifactId&gt;junit&lt;/artifactId&gt;
      &lt;version&gt;4.12&lt;/version&gt;
      &lt;scope&gt;test&lt;/scope&gt;
    &lt;/dependency&gt;
 ...]]></description><category></category></item><item><title><![CDATA[idea64.exe.vmoptions配置 优化使用体验]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/113913631</link><guid>https://blog.youkuaiyun.com/F945464/article/details/113913631</guid><author>F945464</author><pubDate>Sun, 21 Feb 2021 08:57:17 +0800</pubDate><description><![CDATA[-Xms128m
-Xmx750m
-XX:ReservedCodeCacheSize=240m
-XX:+UseConcMarkSweepGC
-XX:SoftRefLRUPolicyMSPerMB=50
-ea
-Dsun.io.useCanonCaches=false
-Djava.net.preferIPv4Stack=true
-Djdk.http.auth.tunneling.disabledSchemes=""
-XX:+HeapDumpOnOutOfMemoryError
-XX:-Omit]]></description><category></category></item><item><title><![CDATA[Vue 结合sprimg mvc  jackson  ajax axios 收参数]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/113240581</link><guid>https://blog.youkuaiyun.com/F945464/article/details/113240581</guid><author>F945464</author><pubDate>Wed, 27 Jan 2021 09:36:53 +0800</pubDate><description><![CDATA[@ResponseBody
    @RequestMapping("all")
    public List&lt;User&gt; selectAll(){
        UserServiceImpl us = new UserServiceImpl();
        List&lt;User&gt; users = us.selectAll();
        return users;
    }

    @ResponseBody
    @RequestMapping("...]]></description><category></category></item><item><title><![CDATA[Oracle 获取时间]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/113096115</link><guid>https://blog.youkuaiyun.com/F945464/article/details/113096115</guid><author>F945464</author><pubDate>Sun, 24 Jan 2021 20:28:32 +0800</pubDate><description><![CDATA[select sysdate from dual
select systimestamp from dual

sysdate 年月日、时分秒 [当前系统时间] 

systimestamp 年月日、时分秒、毫秒 [当前系统时间]
]]></description><category></category></item><item><title><![CDATA[Vue splice使用说明]]></title><link>https://blog.youkuaiyun.com/F945464/article/details/113006989</link><guid>https://blog.youkuaiyun.com/F945464/article/details/113006989</guid><author>F945464</author><pubDate>Fri, 22 Jan 2021 22:58:35 +0800</pubDate><description><![CDATA[splice(index,len,[item])它也可以用来替换/删除/添加数组内某一个或者几个值（该方法会改变原始数组）

index:数组开始下标   

len: 替换/删除的长度 (如果是0,则是添加item)   

item:替换的值，删除操作的话 item为空
...]]></description><category></category></item></channel></rss>