<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[EmptyPointer的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/EmptyPointer</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; EmptyPointer]]></copyright><item><title><![CDATA[Nodejs定时任务（node-schedule)、（cron）]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509664</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509664</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:53:28 +0800</pubDate><description><![CDATA[Nodejs定时任务（node-schedule)、（cron）用法]]></description><category></category></item><item><title><![CDATA[【异常】 Packet for query is too large (1220 ＞ 1024). You can change this value on the server by setting]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509617</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509617</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:51:45 +0800</pubDate><description><![CDATA[问题：
【异常】Caused by: com.mysql.jdbc.PacketTooBigException: Packet for query is too large (1220&gt; 1024). You can change this value on the server by setting the max_allowed_packet' variable

原因：
有时候大的插入和更新会受max_allowed_packet 参数限制，导致写入或者更新失败。
mysql max_allo.]]></description><category></category></item><item><title><![CDATA[JSP 标准标签库(JSTL)]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509589</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509589</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:51:17 +0800</pubDate><description><![CDATA[JSP 标准标签库（JSTL）

一、&lt;fmt:formatNumber&gt;------格式化标签

 value:需要格式化的数字......
  type：按照哪种类型格式化......
  pattern：自定义格式化样式......
 var：存储格式化后的结果......
  scope: 存储的范围......
  currencyCode：货币码......
  currencySymbol：货币符号......

 1、&lt;fmt:form...]]></description><category></category></item><item><title><![CDATA[Echarts折线图Line]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509558</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509558</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:49:56 +0800</pubDate><description><![CDATA[&lt;script type="text/javascript"&gt;

// 基于准备好的dom，初始化echarts实例
  var myChart = echarts.init(document.getElementById('main'));
  var option = {
  // 图表标题
  title: {
   text: '折线图Line'
  },
  // 提示框
  tooltip ...]]></description><category></category></item><item><title><![CDATA[Android Studio安装及使用]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509536</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509536</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:49:06 +0800</pubDate><description><![CDATA[1.要安装Android studio首先要安装JDK，以及Java环境变量的配置。JDK的安装以及环境变量的配置参考如下：

https://jingyan.baidu.com/article/456c463b53794d0a5831442b.html

2.Android Studio下载地址：

https://developer.android.google.cn/studio/

3.下载完成后双击安装应用程序，进入安装界面：



4.选择安装的插件：



5.点击 I Agree



6.]]></description><category></category></item><item><title><![CDATA[Android Studio 常用控件和常用布局的介绍]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509509</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509509</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:48:25 +0800</pubDate><description><![CDATA[一、常用控件：

文本控件：– TextView – EditText

按钮控件： – Button – ImageButton

状态开关按钮：– ToggleButton

单选与复选按钮：– CheckBox和RadioButton

图片控件：– ImageView

时钟控件：– AnalogClock – DigitalClock

日期与时间选择控件： – DatePicker – TimePicker

1.插入图片
&lt;ImageView
android:layout_...]]></description><category></category></item><item><title><![CDATA[Android Studio 常用快捷键使用]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509489</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509489</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:47:55 +0800</pubDate><description><![CDATA[Android快捷键使用：
Ctrl+N      查找类
Ctrl+E或者Alt+Shift+C  最近更改的代码
Ctrl+R      替换文本
Ctrl+F       查找文本
Ctrl+空格     代码提示
Ctrl+P       方法参数提示
Ctrl+X       删除行
Ctrl+D       复制行
Ctrl＋O      可以选择父类的方法进行重...]]></description><category></category></item><item><title><![CDATA[获取系统当前时间和特定格式的时间]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509460</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509460</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:47:09 +0800</pubDate><description><![CDATA[//java中获取系统当前时间  


SimpleDateFormat formatter = new SimpleDateFormat ("yyyy年MM月dd日 HH:mm:ss");   
Date curDate = newDate(System.currentTimeMillis());//获取当前时间   
String str = formatter.format(curDate);

//js中获取系统当前时间


var myDate = new Date(...]]></description><category></category></item><item><title><![CDATA[nodejs日志管理 log4js使用详解]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509428</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108509428</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:46:16 +0800</pubDate><description><![CDATA[一、首先是在项目中安装 log4js
  npm install log4js --save

  注：log4js日志级别，分别为：&lt;权值从小到大&gt;

  all &lt; trace &lt; debug &lt; info &lt; warn &lt; error &lt; fatal &lt; mark &lt; off

二、基本使用：

1.//-----------同一文件，不同 level 日志输出-----------



var log4js = require...]]></description><category></category></item><item><title><![CDATA[JAVA对象转换为JSON及日期格式转换处理]]></title><link>https://blog.youkuaiyun.com/EmptyPointer/article/details/108508815</link><guid>https://blog.youkuaiyun.com/EmptyPointer/article/details/108508815</guid><author>EmptyPointer</author><pubDate>Thu, 10 Sep 2020 10:26:52 +0800</pubDate><description><![CDATA[JAVA对象转换为JSON及日期格式转换处理
默认JSON对DATE类型会转换成一个多属性对象, 而不是单独的一个字符串, 在某些应用处理上不是很方便,  可以利用JsonValueProcessor来实现日期的转换.
方法：
1.增加一个DateJsonValueProcessor类，如下：
import java.text.SimpleDateFormat;
import java.util.Date;
import net.sf.json.JsonConfig;
import net.sf.json.]]></description><category></category></item></channel></rss>