<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Sun_nowU的博客]]></title><description><![CDATA[活的精致]]></description><link>https://blog.youkuaiyun.com/Sun_nowU</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Sun_nowU]]></copyright><item><title><![CDATA[二分查找法]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/126280701</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/126280701</guid><author>Sun_nowU</author><pubDate>Thu, 11 Aug 2022 10:44:43 +0800</pubDate><description><![CDATA[二分查找法。]]></description><category></category></item><item><title><![CDATA[高效判断一个数的奇偶]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/120416705</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/120416705</guid><author>Sun_nowU</author><pubDate>Wed, 22 Sep 2021 15:59:40 +0800</pubDate><description><![CDATA[记录一下


    /** 判断奇偶
     *
     * @param i true 奇    false 偶
     * @return boolean
     */
    public boolean isOdd(int i) {
        // return i % 2 != 0;
        return (i &amp; 1) == 1;
    }


]]></description><category></category></item><item><title><![CDATA[对象与map的转换]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/120024057</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/120024057</guid><author>Sun_nowU</author><pubDate>Tue, 31 Aug 2021 18:29:16 +0800</pubDate><description><![CDATA[1.导入依赖 
       &lt;dependency&gt;
            &lt;groupId&gt;org.apache.commons&lt;/groupId&gt;
            &lt;artifactId&gt;commons-text&lt;/artifactId&gt;
            &lt;version&gt;1.6&lt;/version&gt;
        &lt;/dependency&gt;
   2.mapz转bean
    ...]]></description><category></category></item><item><title><![CDATA[sql优化记录]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/105448819</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/105448819</guid><author>Sun_nowU</author><pubDate>Sat, 11 Apr 2020 11:04:15 +0800</pubDate><description><![CDATA[1.对查询进行优化，要尽量避免全表扫描，首先应考虑在 where 及 order by 涉及的列上建立索引。


2.应尽量避免在 where 子句中对字段进行 null 值判断，否则将导致引擎放弃使用索引而进行全表扫描，如：


select id from t where num is null

最好不要给数据库留NULL，尽可能的使用NOT NULL填充数据库.

备注、描述、评论之类的...]]></description><category></category></item><item><title><![CDATA[MD5Encoder]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/97795412</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/97795412</guid><author>Sun_nowU</author><pubDate>Tue, 30 Jul 2019 16:38:35 +0800</pubDate><description><![CDATA[package com.timespark.core.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Encoder {
	 public static String encode(String pwd) {  
	        ...]]></description><category></category></item><item><title><![CDATA[Post简单调用其他项目的接口]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/97795248</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/97795248</guid><author>Sun_nowU</author><pubDate>Tue, 30 Jul 2019 16:37:28 +0800</pubDate><description><![CDATA[package com.timespark.util;


import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.Http...]]></description><category></category></item><item><title><![CDATA[HttpUtis带有参数]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/97795104</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/97795104</guid><author>Sun_nowU</author><pubDate>Tue, 30 Jul 2019 16:36:10 +0800</pubDate><description><![CDATA[package com.timespark.core.util;

import org.apache.poi.hssf.usermodel.*;

import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import jav...]]></description><category></category></item><item><title><![CDATA[HttpUtils 无参数调用另外项目接口]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/97794761</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/97794761</guid><author>Sun_nowU</author><pubDate>Tue, 30 Jul 2019 16:34:49 +0800</pubDate><description><![CDATA[package com.timespark.util;

import org.apache.commons.httpclient.*;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;
import org.a...]]></description><category></category></item><item><title><![CDATA[mysql记录]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/94022700</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/94022700</guid><author>Sun_nowU</author><pubDate>Fri, 28 Jun 2019 17:26:30 +0800</pubDate><description><![CDATA[SELECT id,openid,content,location,describe,createtime,STATUS,treatment,resver1  FROM t_akeyto  WHERE  id = 2

因为创建字段的时候用了describe关键字   查询的时候会报错,找了半天
  还有一个  可以使用 not in查询不在这个里面的与 in 互斥
 


...]]></description><category></category></item><item><title><![CDATA[将map转化成实体类]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/91045931</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/91045931</guid><author>Sun_nowU</author><pubDate>Thu, 06 Jun 2019 16:22:30 +0800</pubDate><description><![CDATA[public static &lt;T&gt; T mapToBean(Map&lt;String, Object&gt; map,T bean){
      BeanMap beanMap=BeanMap.create(bean);
      beanMap.putAll(map);
        return bean;
    }


]]></description><category></category></item><item><title><![CDATA[Java中List, Integer[], int[]的相互转换]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/90374481</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/90374481</guid><author>Sun_nowU</author><pubDate>Mon, 20 May 2019 14:39:32 +0800</pubDate><description><![CDATA[int[] data = {4, 5, 3, 6, 2, 5, 1};
 
        // int[] 转 List&lt;Integer&gt;
        List&lt;Integer&gt; list1 = Arrays.stream(data).boxed().collect(Collectors.toList());
        // Arrays.stream(ar...]]></description><category></category></item><item><title><![CDATA[JS日期操作]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/87931967</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/87931967</guid><author>Sun_nowU</author><pubDate>Tue, 26 Feb 2019 11:34:14 +0800</pubDate><description><![CDATA[var myDate = new Date();
myDate.getYear();        //获取当前年份(2位)
myDate.getFullYear();    //获取完整的年份(4位,1970-????)
myDate.getMonth();       //获取当前月份(0-11,0代表1月)
myDate.getDate();        //获取当前日(1-31)
myD...]]></description><category></category></item><item><title><![CDATA[javaScript 将数字保留两位小数并 三分化显示]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/86234885</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/86234885</guid><author>Sun_nowU</author><pubDate>Thu, 10 Jan 2019 15:22:13 +0800</pubDate><description><![CDATA[
/保留两位小数并数字三分化
function farmatJine(value) {
    if (value == undefined || value == &quot;&quot;) {
        value = 0;
    }
    //现将数字保留两位小数,再将其三分化
    var nStr = (value * 1).toFixed(2);
    nStr += '';
    x =...]]></description><category></category></item><item><title><![CDATA[SpringBoot整合SpringData Jpa 与Redis]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/84843393</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/84843393</guid><author>Sun_nowU</author><pubDate>Wed, 05 Dec 2018 21:12:14 +0800</pubDate><description><![CDATA[1.导入起步依赖


&amp;lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&amp;gt;
&amp;lt;project xmlns=&quot;http://maven.apache.org/POM/4.0.0&quot;
         xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
         xsi:schemaLocation...]]></description><category></category></item><item><title><![CDATA[Springboot 整合Mybatis]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/84841852</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/84841852</guid><author>Sun_nowU</author><pubDate>Wed, 05 Dec 2018 19:39:36 +0800</pubDate><description><![CDATA[ 

1.在pom文件添加起步依赖


&amp;lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&amp;gt;
&amp;lt;project xmlns=&quot;http://maven.apache.org/POM/4.0.0&quot;
         xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
         xsi:schem...]]></description><category></category></item><item><title><![CDATA[JPA---Specifications动态查询多表查询,表表关系]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/84778235</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/84778235</guid><author>Sun_nowU</author><pubDate>Mon, 03 Dec 2018 21:07:43 +0800</pubDate><description><![CDATA[
&amp;lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&amp;gt;
&amp;lt;beans xmlns=&quot;http://www.springframework.org/schema/beans&quot;
       xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot; xmlns:aop=&quot;http://www.springfr]]></description><category></category></item><item><title><![CDATA[SpringData-JPA入门]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/84667221</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/84667221</guid><author>Sun_nowU</author><pubDate>Fri, 30 Nov 2018 20:08:42 +0800</pubDate><description><![CDATA[1.导入JAR包


&amp;lt;properties&amp;gt;
        &amp;lt;project.build.sourceEncoding&amp;gt;UTF-8&amp;lt;/project.build.sourceEncoding&amp;gt;
        &amp;lt;project.hibernate.version&amp;gt;5.0.7.Final&amp;lt;/project.hibernate.version&amp;...]]></description><category></category></item><item><title><![CDATA[小试牛刀-冒泡排序]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/83503359</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/83503359</guid><author>Sun_nowU</author><pubDate>Mon, 29 Oct 2018 11:38:26 +0800</pubDate><description><![CDATA[1.0 有一个无序数组(写一个程序排序完成排序)


  //由此可见：N个数字要排序完成，总共进行N-1趟排序，每i趟的排序次数为(N-i)次，
   // 所以可以用双重循环语句，外层控制循环多少趟，
    public static void main(String[] args) {
        int[] arr = {6, 3, 8, 2, 9, 1};
        minF...]]></description><category></category></item><item><title><![CDATA[Spring Data ElasticSearch入门]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/83449257</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/83449257</guid><author>Sun_nowU</author><pubDate>Sat, 27 Oct 2018 20:10:14 +0800</pubDate><description><![CDATA[
1.创建maven工程导入依赖

2.创建applicationContext.xml配置文件，引入elasticsearch命名空间

![
3实体类上,基于spring data elasticsearch注解配置索引、映射和实体的关系

4.编写dao接口

4.1 查询常见命名规则

5.0 编写测试类

5.1增删改(修改就是先删除后添加)
//删除
@Test
public  voi...]]></description><category></category></item><item><title><![CDATA[SSM整合配置文件]]></title><link>https://blog.youkuaiyun.com/Sun_nowU/article/details/83420098</link><guid>https://blog.youkuaiyun.com/Sun_nowU/article/details/83420098</guid><author>Sun_nowU</author><pubDate>Fri, 26 Oct 2018 20:04:03 +0800</pubDate><description><![CDATA[1.建工程导坐标
创建工程的时候注意只有(items_web层创建使用了骨架)

2.在父工程里面导入所需的依赖
截取一部分

3.0 建立模块之间的依赖
 在web层导入service依赖  service层导入dao层依赖 并在service层导入tomcat7插件(…)
4.在web层配置配置文件
4.1配置applicationContext.xml核心配置文件
 注解扫描的包名啥的一定不...]]></description><category></category></item></channel></rss>