<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[dwfqf的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/dwfqf</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; dwfqf]]></copyright><item><title><![CDATA[java后端读取服务器文件转换byte[]]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/159126737</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/159126737</guid><author>dwfqf</author><pubDate>Mon, 16 Mar 2026 17:21:38 +0800</pubDate><description><![CDATA[String url = "http://完整路径/3.jpeg";// 替换为你的URL。]]></description><category></category></item><item><title><![CDATA[ mybatis 报错解决方案ORA-01795: maximum number of expressions in a list is 1000]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/155780465</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/155780465</guid><author>dwfqf</author><pubDate>Wed, 10 Dec 2025 13:59:47 +0800</pubDate><description><![CDATA[/if>#{i}</foreach>]]></description><category></category></item><item><title><![CDATA[mysql将纯数字值查询出来前面添加编号]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/145491206</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/145491206</guid><author>dwfqf</author><pubDate>Fri, 07 Feb 2025 11:25:33 +0800</pubDate><description><![CDATA[update mom_dm.t_dm_workobservationResult set result_date1= CONCAT('B', result_date1) WHERE result_date1 REGEXP '^[[:digit:]]+$';]]></description><category></category></item><item><title><![CDATA[mysql8版本父子结构查询]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/131868596</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/131868596</guid><author>dwfqf</author><pubDate>Sat, 22 Jul 2023 15:40:25 +0800</pubDate><description><![CDATA[语句查询：UNION ALL展现效果：]]></description><category></category></item><item><title><![CDATA[java 8树结构返回前端]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/131868376</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/131868376</guid><author>dwfqf</author><pubDate>Sat, 22 Jul 2023 15:31:20 +0800</pubDate><description><![CDATA[return ResultHelper.okEntity(result, "成功");数据库直接查询所有就可以。]]></description><category></category></item><item><title><![CDATA[java开发面试题]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/130721274</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/130721274</guid><author>dwfqf</author><pubDate>Wed, 17 May 2023 11:04:28 +0800</pubDate><description><![CDATA[Dao的实现原理，是Mybatis框架通过JDK动态代理接口，当调用接口方法时，代理拦截调用，并通过接口全限名+方法名组成key的方式，查找XML映射文件中的MapperStatement，返回执行SQL后的结果。是指两个或两个以上的进程（或线程）在执行过程中，因争夺对方线程的资源而造成的一种互相等待的现象，若无外力作用，它们都将无法推进下去。volatile关键字能保证数据的可见性，但不能保证数据的原子性。T3先执行，在T3的run中，调用t2.join，T2的run中，调用t1.join。]]></description><category></category></item><item><title><![CDATA[达梦数据库使用dexp/dimp指令操作]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/127745194</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/127745194</guid><author>dwfqf</author><pubDate>Tue, 08 Nov 2022 10:09:05 +0800</pubDate><description><![CDATA[TABLES：以表明方式导出，可根据情况添加。]]></description><category></category></item><item><title><![CDATA[oracle的文本字段（text）转字符串查看语句]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/125721735</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/125721735</guid><author>dwfqf</author><pubDate>Mon, 11 Jul 2022 15:00:02 +0800</pubDate><description><![CDATA[oracle的文本字段查询无法显示]]></description><category></category></item><item><title><![CDATA[IDEA导入springboot项目无法启动，点击run无反应]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/124345328</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/124345328</guid><author>dwfqf</author><pubDate>Fri, 22 Apr 2022 14:37:11 +0800</pubDate><description><![CDATA[IDEA导入springboot项目无法启动，点击run无反应

这是因为该项目涉及到了groovy这个插件，可能是IDEA版本和这个项目涉及到的groovy这个版本不同导致的！！！
解决办法:如图 打开IDEA ----&gt;file----&gt;settings----&gt;Plugins
然后搜索groovy，点击取消即可




...]]></description><category></category></item><item><title><![CDATA[oracle数据库递归查询]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/123531749</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/123531749</guid><author>dwfqf</author><pubDate>Wed, 16 Mar 2022 17:34:24 +0800</pubDate><description><![CDATA[select
        *
from
        ua_dept t
where
        1                  =1
    and t.DEPT_STATUS      =1
    and t.DEPT_AUDIT_STATUS=1 start
with t.id                  =430 connect by prior t.id=t.parent_dept_id

t.id：起始点编号

t.parent_dept_id：父级编号
...]]></description><category></category></item><item><title><![CDATA[使用activiti explorer工具复制流程]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/122594973</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/122594973</guid><author>dwfqf</author><pubDate>Thu, 20 Jan 2022 09:58:50 +0800</pubDate><description><![CDATA[画一个流程图后，再画一个，都要重头开始
将一个模板当前配的节点，复制到另外一个模板中。
先找到activiti-explorer的复制粘贴代码
通过跟踪代码，找到代码的复制地方。
oryx.debug.js页面中的editCopy为原生的复制代码，而editPaste为粘贴的相关代码
怎么改?
考虑使用localStorage将复制的内空存在localStorage，而粘贴时，要将代码从localStorage读取出来。


以下是代码片段：


/**
 * Performs the copy opera]]></description><category></category></item><item><title><![CDATA[Linux配置多个Tomcat同时运行]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/119757697</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/119757697</guid><author>dwfqf</author><pubDate>Tue, 17 Aug 2021 15:25:34 +0800</pubDate><description><![CDATA[1、修改环境变量

　　#vi /etc/profile

####### 工程1 tomcat1#######
export CATALINA_BASE=/data/server/tomcat
export CATALINA_HOME=$CATALINA_BASE
export TOMCAT_HOME=$CATALINA_BASE

####### 工程2 tomcat2#######
export CATALINA_2_BASE=/data/tomcat-upgrade
export CATAL...]]></description><category></category></item><item><title><![CDATA[递归查询树状结构]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/119670185</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/119670185</guid><author>dwfqf</author><pubDate>Fri, 13 Aug 2021 10:39:35 +0800</pubDate><description><![CDATA[public CommonResponsePojo getDeptUnderUnitByUnitId(IdPojo idPojo, CommonResponsePojo baseResponsePojo, String code) {
    try {
        UaDept uaDept = new UaDept();
        uaDept.setDeptAuditStatus((byte) 1);
        uaDept.setDeptStatus((byte) 1);
    .]]></description><category></category></item><item><title><![CDATA[Java比对两个对象内容是否一样]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/118152429</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/118152429</guid><author>dwfqf</author><pubDate>Wed, 23 Jun 2021 14:33:19 +0800</pubDate><description><![CDATA[package enums;

import com.basics.soft.dao.entity.XmScssCbsjKcsjYxgc;

import java.lang.reflect.Field;
import java.util.*;

/**
 * @author Howe~zZ
 * @version V1.0
 * @Package enums
 * @date 2021/6/7 16:21
 */
public class ModifyContrast {

    //忽略的属性
  .]]></description><category></category></item><item><title><![CDATA[使用Acvititi查看流程图位置]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/114526754</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/114526754</guid><author>dwfqf</author><pubDate>Mon, 08 Mar 2021 11:44:22 +0800</pubDate><description><![CDATA[package com.deer.controller;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRes..]]></description><category></category></item><item><title><![CDATA[使用File上传问件时检测信息并生成文件夹]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/114526706</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/114526706</guid><author>dwfqf</author><pubDate>Mon, 08 Mar 2021 11:41:53 +0800</pubDate><description><![CDATA[//上传文件
  public String uploadFile(HttpServletRequest request,MultipartFile uploadFile) throws IOException {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSS");
    String res = sdf.format(new Date());
    //uploads文件夹位置
  ...]]></description><category></category></item><item><title><![CDATA[使用poi自定义导出数据]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/114526473</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/114526473</guid><author>dwfqf</author><pubDate>Mon, 08 Mar 2021 11:34:04 +0800</pubDate><description><![CDATA[/**
 4   * excel自定义导出
 5   * @param hAqscTieupsummary
 6   * @param request
 7   * @param response
 8   * @param dataGrid
 9   * @param modelMap
10   * @return
11   */
  @SuppressWarnings("deprecation")
  @RequestMappi...]]></description><category></category></item><item><title><![CDATA[使用Activiti6获取节点相关信息]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/111478641</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/111478641</guid><author>dwfqf</author><pubDate>Mon, 21 Dec 2020 16:59:23 +0800</pubDate><description><![CDATA[/**
 * 获取下一个节点信息
 */

@Test
public void getNexNode(){
    TaskService taskService = processEngine.getTaskService();
    Task task = taskService.createTaskQuery()
            .taskAssignee("0001")
            .singleResult();

    //根据流程定义id获取bpmnModel对象
 .]]></description><category></category></item><item><title><![CDATA[wait millis 60010, active 20, maxActive 20 处理 com.alibaba.druid.pool.GetConnectionTimeout]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/108381512</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/108381512</guid><author>dwfqf</author><pubDate>Thu, 03 Sep 2020 14:00:45 +0800</pubDate><description><![CDATA[wait millis 60010, active 20, maxActive 20 处理 com.alibaba.druid.pool.GetConnectionTimeout
]]></description><category></category></item><item><title><![CDATA[idea intellij构建spring boot项目和配置tomcat的流程和坑]]></title><link>https://blog.youkuaiyun.com/dwfqf/article/details/106688105</link><guid>https://blog.youkuaiyun.com/dwfqf/article/details/106688105</guid><author>dwfqf</author><pubDate>Thu, 11 Jun 2020 14:23:38 +0800</pubDate><description><![CDATA[idea intellij构建spring boot项目和配置tomcat的流程和坑
]]></description><category></category></item></channel></rss>