<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[悠然而然]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/iteye_4181</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; iteye_4181]]></copyright><item><title><![CDATA[源文件Arith.java]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82672694</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82672694</guid><author>iteye_4181</author><pubDate>Fri, 02 Sep 2016 23:25:05 +0800</pubDate><description><![CDATA[
       在java中提供了大数字的操作类，即java.math.BinInteger类和java.math.BigDecimal类。这两个类用于高精度计 算，其中BigInteger类是针对大整数的处理类，而BigDecimal类则是针对大小数的处理类。一般的float型和Double型数据只可 以用来做科学计算或者是工程计算，要求的数字精度比较高时，所以用到java.math.BigD...]]></description><category></category></item><item><title><![CDATA[jQuery四屏可自动播放焦点图代码，兼容主流浏览器]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82671313</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82671313</guid><author>iteye_4181</author><pubDate>Fri, 05 Aug 2016 16:01:32 +0800</pubDate><description><![CDATA[
使用方法：1、在head区域引入样式表文件chuxz.css2、在head区域引入JS文件jquery-1.8.3.min.js和koala.min.1.5.js
&amp;lt;script type=&quot;text/javascript&quot;&amp;gt;    
    Qfast.add('widgets', { path: &quot;js/terminator2.2.min.js&quot;, type: &quot;js&quot;, ...]]></description><category></category></item><item><title><![CDATA[重复记录查询，删除]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82654052</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82654052</guid><author>iteye_4181</author><pubDate>Fri, 01 Jul 2016 21:27:05 +0800</pubDate><description><![CDATA[
1.查询某字段重复的数据。
SELECT * FROM    A,(SELECT M ,N FROM   A   GROUP BY   M,N     HAVING  COUNT(*) &amp;gt; 1  ) A1  WHERE   A.M = A1.M    AND    A.N = A1.N;
 
SELECT   *   FROM  TABLENAME  A  WHERE  (A.PEO...]]></description><category></category></item><item><title><![CDATA[hibernate中get和load方法的区别]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82654048</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82654048</guid><author>iteye_4181</author><pubDate>Fri, 01 Jul 2016 19:24:05 +0800</pubDate><description><![CDATA[
1.从返回将结果：
    load方法检索不到数据抛出org.hibernate.ObjectNotFoundException异常，get方法检索不到数据返回null。
 
2.从检索机制：
    get 方法和 find 方法都是直接检索数据库，而load方法会先查找 session的persistent Context中是否有缓存，有则直接返回，没有则判断是否是lazy，不是...]]></description><category></category></item><item><title><![CDATA[位移运算（左移，右移）]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82654047</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82654047</guid><author>iteye_4181</author><pubDate>Fri, 01 Jul 2016 19:22:13 +0800</pubDate><description><![CDATA[
1.左移，当左移的位数超过该数值类型的最大位数时，编译器会用左移的位数去模类型的最大位数，按余数进行位移。丢弃最高位，0补最低位。左移相当于乘，左移一位相当于乘2，左移两位相当于乘4，即左移位数乘于2的n次方。
如：
int i = 1,j=0x80000000;//设int为32位；
i=i&amp;lt;&amp;lt;33;//33%32=1 左移1位，i变成2
j=j&amp;lt;&amp;lt;33;//...]]></description><category></category></item><item><title><![CDATA[Query中list和iterator的区别]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82654046</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82654046</guid><author>iteye_4181</author><pubDate>Fri, 01 Jul 2016 19:19:55 +0800</pubDate><description><![CDATA[
1.返回的类型不一样，list（）返回List，iterate（）返回Iterator。
2.获取数据的方式不一样，list（）直接查询数据库，iterate（）会先到数据库中把ID都取出来，查询非ID数据时，会先到缓存中找，没有则以ID为条件发送sql到数据库检索，所以查询次数为N+1.
3.iterate会查询二级缓存，list只会查询一级缓存。
4.list（）中返回的是实体对象，...]]></description><category></category></item><item><title><![CDATA[sql模糊查询]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82649070</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82649070</guid><author>iteye_4181</author><pubDate>Mon, 21 Mar 2016 09:50:46 +0800</pubDate><description><![CDATA[
          语句：SELECT　字段　FORM　表　WHERE  某字段  LIKE 条件，条件有四种匹配方式。
         字符匹配操作可以使用通配符 “%” 和“_”，“[]”和&quot;[^]&quot;，%：表示任意个字符，包括零个； _：表示一个任意字符；[]：表示括号内所列字符中的一个(类似正则表达式)；[^]表示不在括号所列之内的单个字符。
          比如 SELECT...]]></description><category></category></item><item><title><![CDATA[ibatis特殊字符的处理]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82649067</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82649067</guid><author>iteye_4181</author><pubDate>Mon, 21 Mar 2016 09:28:35 +0800</pubDate><description><![CDATA[
          &amp;lt;      &amp;amp;lt;
          &amp;gt;      &amp;amp;gt;
          &amp;amp;      &amp;amp;amp;
          '        &amp;amp;apos;
          &quot;        &amp;amp;quot;
          模糊查询   like  '$param$%'   或  #param...]]></description><category></category></item><item><title><![CDATA[异步调用async:true]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82637428</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82637428</guid><author>iteye_4181</author><pubDate>Tue, 14 Jul 2015 10:17:37 +0800</pubDate><description><![CDATA[
  调用一个jquery的ajax方法时我们有时会需要该方法返回一个值或者给某个全局变量赋值，可是我们发现程序执行完后并没有获取到我们想要的值，这时很有可能是因为你用的是ajax的异步调用async:true(默认情况)。ajax的同步调用，只有在获取到了data值并赋值给result以后才会返回result完成该方法的调用。若设为async:true,则会未等到获取data值就已经返回了res...]]></description><category></category></item><item><title><![CDATA[java实现分页]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82637254</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82637254</guid><author>iteye_4181</author><pubDate>Thu, 09 Jul 2015 18:14:51 +0800</pubDate><description><![CDATA[
private Integer cur_page = new Integer(1);//当前页
private Integer total_page = new Integer(1);//总页数
private Integer total_count = new Integer(0);//总行数
private Integer count_page = new Integer(20);/...]]></description><category></category></item><item><title><![CDATA[Unable to locate appropriate constructor on class]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82637156</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82637156</guid><author>iteye_4181</author><pubDate>Wed, 08 Jul 2015 15:38:31 +0800</pubDate><description><![CDATA[
          将hql查询结果封装到POJO对象
          syntax:
                    select new POJO(id,name) from POJO;
          这种封装需要POJO类提供对应构造器，POJO(id,name)构造方法。
          出现这个异常需要检查以下几种情况：
          1）参数构造...]]></description><category></category></item><item><title><![CDATA[js遍历一个map<string,list<Object>>]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82637113</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82637113</guid><author>iteye_4181</author><pubDate>Tue, 07 Jul 2015 18:34:20 +0800</pubDate><description><![CDATA[
&amp;lt;script type=&quot;text/javascript&quot; src=&quot;${pageContext.request.contextPath}/style/js/jquery-1.9.1.js&quot;/&amp;gt;
&amp;lt;script type=&quot;text/javascript&quot;&amp;gt;  
    var html = &quot;&quot;;  
    var app = $(&quot;#fwlx_l]]></description><category></category></item><item><title><![CDATA[关于css失效的问题]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82636830</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82636830</guid><author>iteye_4181</author><pubDate>Wed, 01 Jul 2015 13:58:40 +0800</pubDate><description><![CDATA[        今日所遇到的css失效的问题，想着我也是醉了呢···怎么都没有想过，同样的是导入一个js文件，但是就是可能一个页面中将css直接写入，然而另外的可能就要导入一个css文件呢···还好有一个js大神呢···要不找死我也找不出来的。真不知道当时写这两个页面的人怎么想的啊！我这是完全被忽悠了么···真是一次不好的体验···...]]></description><category></category></item><item><title><![CDATA[根据查询条件重新加载datagrid]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82636275</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82636275</guid><author>iteye_4181</author><pubDate>Wed, 17 Jun 2015 16:14:54 +0800</pubDate><description><![CDATA[
&amp;lt;!doctype html&amp;gt;
&amp;lt;html lang=&quot;en&quot;&amp;gt;
 &amp;lt;head&amp;gt;
  &amp;lt;meta charset=&quot;UTF-8&quot;&amp;gt;
  &amp;lt;meta name=&quot;Generator&quot; content=&quot;EditPlus®&quot;&amp;gt;
  &amp;lt;meta name=&quot;Au]]></description><category></category></item><item><title><![CDATA[关于css失效问题]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82636249</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82636249</guid><author>iteye_4181</author><pubDate>Wed, 17 Jun 2015 10:21:35 +0800</pubDate><description><![CDATA[        其实我这么久来，这是我遇到的最坑爹的问题了吧！怎么都没有想过，js的冲突还会导致css的失效，想想我也是醉了~最终是找到了冲突的两个js，然后就是更换的js加载的顺序，css正常。对于这种问题不知道有没有快捷的方式，我要如何知道是js冲突了？是哪些冲突了？我只是采用很瞎的方式，一个一个的找，要是有一堆的js这可是个大工程啊！！！！...]]></description><category></category></item><item><title><![CDATA[hql集合set的实现]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82636141</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82636141</guid><author>iteye_4181</author><pubDate>Mon, 15 Jun 2015 11:03:49 +0800</pubDate><description><![CDATA[
 public String getOrderGongdanchaxunByWxyAndXm(  String xm) {
            String hql=&quot;SELECT wo FROM WxOrder wo,WxBnfuwuxiangmu fwxm WHERE 1=1  &quot;;
            if (StringUtil.isNotEmpty(xm)&amp;amp;&amp;amp...]]></description><category></category></item><item><title><![CDATA[MYSQL自带函数计算给定的两个日期的间隔天数]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82635982</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82635982</guid><author>iteye_4181</author><pubDate>Thu, 11 Jun 2015 15:12:38 +0800</pubDate><description><![CDATA[
#Method  One
 select to_days(now()) - to_days('20120512')  
#Method  Two
 select datediff(now(),'20120512') 
#Method Three
 select (datediff(curdate(), date(colunm_name1))- (select colunm_name2...]]></description><category></category></item><item><title><![CDATA[ Property 'wxUserRealname' not found on type com.IIF5.entity.WxuserByTechnitian]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82635599</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82635599</guid><author>iteye_4181</author><pubDate>Thu, 04 Jun 2015 11:06:48 +0800</pubDate><description><![CDATA[        该异常是因为WxuserByTechnitian实体类中没有该属性，而我的页面中却引用此属性，所以抛出次异常。加上该属性即可。]]></description><category></category></item><item><title><![CDATA[ Unable to locate class [WxuserByTechnitian] ]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82635598</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82635598</guid><author>iteye_4181</author><pubDate>Thu, 04 Jun 2015 11:03:12 +0800</pubDate><description><![CDATA[
 org.hibernate.hql.internal.ast.QuerySyntaxException: Unable to locate class [WxuserByTechnitian] [SELECT new  WxuserByTechnitian(u.wxUserWeixiuyuanId AS wxUserWeixiuyuanId,u.uploadImg AS uploadImg,u...]]></description><category></category></item><item><title><![CDATA[ Unable to locate appropriate constructor on class [com.IIF5.entity.WxuserByTech]]></title><link>https://blog.youkuaiyun.com/iteye_4181/article/details/82635594</link><guid>https://blog.youkuaiyun.com/iteye_4181/article/details/82635594</guid><author>iteye_4181</author><pubDate>Thu, 04 Jun 2015 10:56:53 +0800</pubDate><description><![CDATA[
java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Unable to locate appropriate constructor on class [com.IIF5.entity.WxuserByTechnitian]. Expected arguments are...]]></description><category></category></item></channel></rss>