<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[qq_40547015的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/qq_40547015</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; qq_40547015]]></copyright><item><title><![CDATA[字符串用0补全指定位数]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/112213944</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/112213944</guid><author>qq_40547015</author><pubDate>Tue, 05 Jan 2021 10:46:06 +0800</pubDate><description><![CDATA[第一种实现方式Java实现：
//2开头，字符串33，6位
String completion = frontWithZore(2,33,6);

public static String frontWithZore(int start,int stringData,int atringLength){
  String newString = start + String.format("%0" + atringLength + "d", stringData);
  return newString;
]]></description><category></category></item><item><title><![CDATA[Bootstrap-Table学习]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/111311792</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/111311792</guid><author>qq_40547015</author><pubDate>Thu, 17 Dec 2020 11:29:17 +0800</pubDate><description><![CDATA[笔记：Bootstrap-Table在线测试网址：
Bootstrap-Table在线测试网址

]]></description><category></category></item><item><title><![CDATA[Windows环境下Oracle数据库备份脚本(创建新的文件夹并且以当前年月日时分秒命名)]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/105995500</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/105995500</guid><author>qq_40547015</author><pubDate>Fri, 08 May 2020 14:27:36 +0800</pubDate><description><![CDATA[双击bat


```java

echo 开始备份数据库if not exist D:\db_bak md D:\db_bak set 
 var=%date:~0,4%%date:~5,2%%date:~8,2%%time:~0,2%%time:~3,2%%time:~6,2%
 
md D:\db_bak\%var%

set DATADIR=D:\db_bak\%var%

exp 数据库...]]></description><category></category></item><item><title><![CDATA[oracle怎么递归查询所有子节点(包括自己)]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/104844428</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/104844428</guid><author>qq_40547015</author><pubDate>Fri, 13 Mar 2020 17:02:53 +0800</pubDate><description><![CDATA[数据结构
MATNR          START
1111111          222222
222222          333333
333333          444444
查询Sql语句
SELECT MATNR
FROM sap_tlbom
  START WITH MATNR = '1111111'
  CONNECT BY prior IDNRK  = MATNR
查询结...]]></description><category></category></item><item><title><![CDATA[怎么动态给select下拉框赋值]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/103679336</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/103679336</guid><author>qq_40547015</author><pubDate>Tue, 24 Dec 2019 10:59:53 +0800</pubDate><description><![CDATA[jsp页面中给下拉框一个id
&lt;select  id="select"&gt;&lt;/select&gt;

js中ajax 获取要赋值给下拉框的值;如json：
//JSON.parse() 方法用于将一个 JSON 字符串转换为对象。
thisObj.sites = JSON.parse(result).Datas;

select 下拉框动态赋值：
var str = ";"
   ...]]></description><category></category></item><item><title><![CDATA[js中怎么获取url后面的多个参数]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/103678843</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/103678843</guid><author>qq_40547015</author><pubDate>Tue, 24 Dec 2019 10:43:59 +0800</pubDate><description><![CDATA[例如  :url路径如下
url:  http://localhost:8080/Demo/Demo.jsp?userid=001

js代码获取url中"?"符后的字串（参数）：
var url = document.location.href;   // 获取url完整路径    
var theRequest = {};
  if (url.indexOf("?") != -1) {
	  ...]]></description><category></category></item><item><title><![CDATA[tomcat端口被占用解决方法]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/103418453</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/103418453</guid><author>qq_40547015</author><pubDate>Fri, 06 Dec 2019 11:06:33 +0800</pubDate><description><![CDATA[如果已知是哪个端口被占用解决方法如下：
1.打开  win + R  输入cmd  打开cmd.exe

2.  输入命令  netstat -ano|findstr  已知被占用的端口号
netstat -ano|findstr  8080


发现确实有程序在监听这个端口，找到进程码pid
taskkill -f -pid  16816

如在使用中发现本人命令输入错误，欢迎纠错，可在下面给我...]]></description><category></category></item><item><title><![CDATA[input中鼠标离开验证所填内容是否是数字]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/102931134</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/102931134</guid><author>qq_40547015</author><pubDate>Wed, 06 Nov 2019 11:04:01 +0800</pubDate><description><![CDATA[&lt;input type="text" class="input_middle130" name="XSPT_LENGTH" maxlength="25" tabindex="5"  value="0.00" onkeyup="this.value=this.value.replace(/[^0-9.]/g,'')"/&gt;
onkeyup 当用户释放键盘按钮时执行

...]]></description><category></category></item><item><title><![CDATA[启动项目定时执行某件事]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/102568562</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/102568562</guid><author>qq_40547015</author><pubDate>Tue, 15 Oct 2019 15:53:50 +0800</pubDate><description><![CDATA[Servlet的监听器Listener
随web应用的启动而启动
/*
 * 基础数据 定时同步
 * @author  Murray
 * 2019/10/10
 * */
public class TimingSynchronizationListener implements ServletContextListener {
@Override
 public void contextDes...]]></description><category></category></item><item><title><![CDATA[关于使用Chrome  插件 CORS解决跨域问题]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/98880447</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/98880447</guid><author>qq_40547015</author><pubDate>Thu, 08 Aug 2019 17:49:56 +0800</pubDate><description><![CDATA[之前 CORS 用的好好的，在关机重启后，再次访问所需地址时，出现如上图的错误信息
尝试了好几种方法，最后把Chrome卸载，重装就可以了
很脑残。。。。

...]]></description><category></category></item><item><title><![CDATA[Java 时间处理(三)：获取年份、月份等]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/97006664</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/97006664</guid><author>qq_40547015</author><pubDate>Tue, 23 Jul 2019 16:35:46 +0800</pubDate><description><![CDATA[Calendar cal = Calendar.getInstance();//实例化日历
        int day = cal.get(Calendar.DATE);
        int month = cal.get(Calendar.MONTH) + 1;
        int year = cal.get(Calendar.YEAR);
        int day_of_...]]></description><category></category></item><item><title><![CDATA[Java 时间处理(二)：将当前格式化时间]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/97006143</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/97006143</guid><author>qq_40547015</author><pubDate>Tue, 23 Jul 2019 16:31:15 +0800</pubDate><description><![CDATA[Date date = new Date();
        String strDateFormat = "yyyy-MM-dd HH:mm:ss a";
        SimpleDateFormat sdf = new SimpleDateFormat(strDateFormat);
        System.out.println(sdf.format(date));
     ...]]></description><category></category></item><item><title><![CDATA[Java 时间处理(一)：时间戳转换成时间]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/97005791</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/97005791</guid><author>qq_40547015</author><pubDate>Tue, 23 Jul 2019 16:28:58 +0800</pubDate><description><![CDATA[Long timeStamp = System.currentTimeMillis();//获取当前时间戳
 
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd :HH:mm:ss");
        String sd = sdf.format(new Date(Long.parseLong(String.valu...]]></description><category></category></item><item><title><![CDATA[字符串替换、反转、查找、转大写、删除其中一个]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/96988952</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/96988952</guid><author>qq_40547015</author><pubDate>Tue, 23 Jul 2019 13:42:43 +0800</pubDate><description><![CDATA[String str = "finished with exit finished";

 //replace
        System.out.println(str.replace('i','a')); 
        System.out.println(str.replaceFirst("fi","ti"));
        System.out.println(str.repla...]]></description><category></category></item><item><title><![CDATA[如何查看当前java运行的脚本]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/96850859</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/96850859</guid><author>qq_40547015</author><pubDate>Mon, 22 Jul 2019 13:31:48 +0800</pubDate><description><![CDATA[java -version



]]></description><category></category></item><item><title><![CDATA[this.$router.resolve新窗口打开]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/96299589</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/96299589</guid><author>qq_40547015</author><pubDate>Wed, 17 Jul 2019 13:23:23 +0800</pubDate><description><![CDATA[有些时候需要在单击事件或者在函数中实现页面跳转，新窗口打开
router:
 path: '/user_details/:financialInstitutionId

在单击事件触发的方法里
const {href} = this.$router.resolve({
                    path: `/user_details/${userId}`
             ...]]></description><category></category></item><item><title><![CDATA[java中断言assert]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/96291190</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/96291190</guid><author>qq_40547015</author><pubDate>Wed, 17 Jul 2019 12:02:52 +0800</pubDate><description><![CDATA[慎用，有陷阱。
两种用法
1、assert &lt;boolean表达式&gt;
如果&lt;boolean表达式&gt;为true，则程序继续执行。
如果为false，则程序抛出AssertionError，并终止执行。
 public void TestDemo() {
        String a = "You are a fool";
        String b = "b";
 ...]]></description><category></category></item><item><title><![CDATA[JAVA判断contains方法的使用]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/96290318</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/96290318</guid><author>qq_40547015</author><pubDate>Wed, 17 Jul 2019 11:48:46 +0800</pubDate><description><![CDATA[contains返回的是布尔类型
包含返回true    不包含返回false
  @Test
    public void TestDemo() {
        String a = "You are a fool";
        String b = "fool";
        //b是否包含在a
        Boolean c= a.contains(b);
       ...]]></description><category></category></item><item><title><![CDATA[xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/95357339</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/95357339</guid><author>qq_40547015</author><pubDate>Wed, 10 Jul 2019 17:37:58 +0800</pubDate><description><![CDATA[问题：安装git  error
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun
解决方法：
安装xcode
xcode-select --install


]]></description><category></category></item><item><title><![CDATA[[Vue warn]: Duplicate keys detected: 'A2019043010767'. This may cause an update error.]]></title><link>https://blog.youkuaiyun.com/qq_40547015/article/details/93190322</link><guid>https://blog.youkuaiyun.com/qq_40547015/article/details/93190322</guid><author>qq_40547015</author><pubDate>Fri, 21 Jun 2019 13:48:01 +0800</pubDate><description><![CDATA[借鉴了网友的意见，解决了，在此总结一下：

原本这个v-for是这样写的
 &lt;li v-for="customer of customerDataList" :key="customer.corporationId"&gt;


改为了：
 &lt;li v-for="(customer,index) of customerDataList" :key="index"&gt;

原因：Dup...]]></description><category></category></item></channel></rss>