<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[jk6541的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/jk6541</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; jk6541]]></copyright><item><title><![CDATA[如何杀掉占用端口号]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/126484418</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/126484418</guid><author>jk6541</author><pubDate>Tue, 23 Aug 2022 14:31:33 +0800</pubDate><description><![CDATA[如何杀掉占用端口号]]></description><category></category></item><item><title><![CDATA[手动回滚的]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/125328135</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/125328135</guid><author>jk6541</author><pubDate>Fri, 17 Jun 2022 09:57:44 +0800</pubDate><description><![CDATA[如果trycatch需要手动回滚]]></description><category></category></item><item><title><![CDATA[resultmap复杂查询]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/121635811</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/121635811</guid><author>jk6541</author><pubDate>Tue, 30 Nov 2021 16:18:18 +0800</pubDate><description><![CDATA[association



&lt;resultmap id = “xxx" type = "videoorder"&gt;

&lt;id colum= "id" property="id"/&gt;

&lt;result column = "user_id" property = "userid"&gt;

&lt;result column = "cdeatr_time" property = "createtime"&gt;

&lt;result column = "video_id" pr.]]></description><category></category></item><item><title><![CDATA[resultmap]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/121633542</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/121633542</guid><author>jk6541</author><pubDate>Tue, 30 Nov 2021 15:16:31 +0800</pubDate><description><![CDATA[&lt;resultmap id = "xxx"type = "实体类（net.lrd.video）"&gt;

&lt;id column = "id" javatype = "id"&gt;

&lt;result column = "create_time"javatype = "ceatime"&gt;

&lt;/resultmap&gt;



column 就是表的某列。  javatype就是实体类的属性。


...]]></description><category></category></item><item><title><![CDATA[sql片段使用]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/121633358</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/121633358</guid><author>jk6541</author><pubDate>Tue, 30 Nov 2021 15:09:03 +0800</pubDate><description><![CDATA[自定义查询字段重复使用

&lt;sql id = "xxx"&gt;

id,title,price

&lt;/sql&gt;



select &lt;inclode refid="xxx"/&gt;

inclode 字段就可以
]]></description><category></category></item><item><title><![CDATA[mybatis常见配置]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/121627581</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/121627581</guid><author>jk6541</author><pubDate>Tue, 30 Nov 2021 10:53:41 +0800</pubDate><description><![CDATA[configuration（配置） 

properties（属性） 

settings（设置） 

typeAliases（类型别名） 

typeHandlers（类型处理器） 

objectFactory（对象⼯⼚） 

plugins（插件，少⽤） 

environments（环境配置，不配多环境，基本在Spring⾥⾯配置） 

environment（环境变量） 

transactionManager（事务管理器） 

dataSource（数据源） 

databaseIdProvid]]></description><category></category></item><item><title><![CDATA[mybatis 如果有＞或＜需要处理]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/121627367</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/121627367</guid><author>jk6541</author><pubDate>Tue, 30 Nov 2021 10:47:50 +0800</pubDate><description><![CDATA[delete from video where title &lt;![cdata[ &gt; ]]&gt; #{time} , price &lt;![cdata[ &lt; ]] #{price}

&lt;![cdata[ &gt; ]]&gt; 用这个来代替 大于号。就不会和html标签冲突
]]></description><category></category></item><item><title><![CDATA[批量更新使用trim]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/121626701</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/121626701</guid><author>jk6541</author><pubDate>Tue, 30 Nov 2021 10:29:20 +0800</pubDate><description><![CDATA[update video

&lt;trim ptrfix = "set" suffixoverrides = ","&gt;

&lt;if test = "title != null" &gt;title = #{title,jdbctype = varchar} , &lt;/if&gt;

&lt;if test = "time != null" &gt;title = #{time,jdbctype = timestamp} , &lt;/if&gt;

&lt;trim&gt;

suffix.]]></description><category></category></item><item><title><![CDATA[mybati如果出现：无效的列类型]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/121563706</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/121563706</guid><author>jk6541</author><pubDate>Fri, 26 Nov 2021 16:42:25 +0800</pubDate><description><![CDATA[mybati如果出现：无效的列类型，可能是缺少jdbcType

只有当字段可为null时才需要jdbcType



如果有两个以上入参加@param
]]></description><category></category></item><item><title><![CDATA[mybatis如何获取自增后的主键]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/121563369</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/121563369</guid><author>jk6541</author><pubDate>Fri, 26 Nov 2021 16:36:58 +0800</pubDate><description><![CDATA[比如：

&lt;insert id = "add" parameterType = “net.lrd.video”&gt; userGeneratedKeys ="true" keyProperty = "id" key Column = "id"&gt;

insert into 'video' ('title' , 'summary' , 'cover_img' ,'price' , 'create_time')

values(

#{title,jdbcType = VARCHAR} ,#{sum]]></description><category></category></item><item><title><![CDATA[BETWEEN…AND 筛选日期]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/119991646</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/119991646</guid><author>jk6541</author><pubDate>Mon, 30 Aug 2021 10:25:27 +0800</pubDate><description><![CDATA[between
to_char(to_date(#{startDate},'yyyy-mm-dd'),'yyyy-mm-dd') 
and
to_char(to_date(#{endDate},'yyyy-mm-dd'),'yyyy-mm-dd')


在什么什么之间
]]></description><category></category></item><item><title><![CDATA[bootStarp设置表格单元格属性]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/118967654</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/118967654</guid><author>jk6541</author><pubDate>Wed, 21 Jul 2021 15:29:24 +0800</pubDate><description><![CDATA[根据单元格或者行内其他单元格的内容，给该单元格设置一定的css样式
columns: [{
 field: 'index',
 title: '序号',
 align:"center",
 formatter:function(value, row, index){
  return index+1;
 }，
 cellStyle:{
  css:{"background-color":"red"}
 }


...]]></description><category></category></item><item><title><![CDATA[流程图各个图形都代表什么]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/118962109</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/118962109</guid><author>jk6541</author><pubDate>Wed, 21 Jul 2021 11:32:03 +0800</pubDate><description><![CDATA[开始/结束 - 椭圆表示





处理过程 - 矩形



判断 - 菱形








]]></description><category></category></item><item><title><![CDATA[easyui按钮可选不可选，按钮显示隐藏]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/118917428</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/118917428</guid><author>jk6541</author><pubDate>Mon, 19 Jul 2021 23:55:27 +0800</pubDate><description><![CDATA[1.第一种
document.getElementById("delete").style.display='';  //标签显示 
document.getElementById("delete").style.display='none'; //标签隐藏

&lt;a id="btn_save" href="#" class="easyui-linkbutton" iconCls="icon-ok"&gt;确定&lt;/a&gt;按钮的隐藏

2.第二种 Jquery的具体写法：

$("#bt...]]></description><category></category></item><item><title><![CDATA[oracle]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/118797208</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/118797208</guid><author>jk6541</author><pubDate>Fri, 16 Jul 2021 14:32:40 +0800</pubDate><description><![CDATA[多条件or会有很多重复数据 如果用in函数就不会有大量重复数据ps：不知道为啥

or  a.pol_state = '00'
  or a.pol_state = '01'
  or  a.pol_state = '02'
  or a.pol_state = '12'

用


a.pol_state in('00','01','02','12')  

就会正常，所以以后并且的条件就要用到in
...]]></description><category></category></item><item><title><![CDATA[ModelAndView后台传参]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/118731904</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/118731904</guid><author>jk6541</author><pubDate>Wed, 14 Jul 2021 16:56:54 +0800</pubDate><description><![CDATA[@RequestMapping("/initnonRealTimeModify")
public ModelAndView initnonRealTimeModify(HttpServletRequest request) {
   ModelAndView model = new ModelAndView();
   String contId = request.getParameter("contId");
   model.setViewName("/nonrealtimemodify/jsp/n.]]></description><category></category></item><item><title><![CDATA[mybatis]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/118701819</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/118701819</guid><author>jk6541</author><pubDate>Tue, 13 Jul 2021 15:41:46 +0800</pubDate><description><![CDATA[如果要取两个表的id，直接在后面加别名，然后


resultMap中 &lt;result column="id" jdbcType="VARCHAR" property="别名" /&gt;就好了





]]></description><category></category></item><item><title><![CDATA[easyUI控制table显隐方法]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/118699191</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/118699191</guid><author>jk6541</author><pubDate>Tue, 13 Jul 2021 14:24:03 +0800</pubDate><description><![CDATA[在jsp页面table标签中加入  id='table1' class="easyui-panel" closed = "true"


之后用.panel就可以实现EU中table的显隐
 $("#table1").panel('close')
 $("#table1").panel('open')
]]></description><category></category></item><item><title><![CDATA[spring mvc 常用前后台数据交互的注解（转载）]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/118697807</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/118697807</guid><author>jk6541</author><pubDate>Tue, 13 Jul 2021 13:10:35 +0800</pubDate><description><![CDATA[关于spring mvc前后台交互的一些注解



Url模板

在请求路径中添加变量，使用{}。通过@pathVariable注解在方法参数中，获得url中的变量值。

@pathVariable(“url中的变量名”)参数。









适用于Restful风格架构，



注入bean

当在类中需要引用另一个类对象的时候，需要注入。

@Resource和@Autowired可以实现注入。



@Autowired默认是根据bytpye类型注入对象。

@Resource默认是根据byN..]]></description><category></category></item><item><title><![CDATA[小岱知识积累]]></title><link>https://blog.youkuaiyun.com/jk6541/article/details/118609437</link><guid>https://blog.youkuaiyun.com/jk6541/article/details/118609437</guid><author>jk6541</author><pubDate>Fri, 09 Jul 2021 16:25:13 +0800</pubDate><description><![CDATA[用@Transactional注解
@Transactional(rollbackFor = Exception.class)




在错误后加，抛出异常


throw new YBException(RetInfoUtil.buildRetinfo("xxx"));




这样出现异常后就会回滚
]]></description><category></category></item></channel></rss>