<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[dasgs5a64的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/dasgs5a64</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; dasgs5a64]]></copyright><item><title><![CDATA[java黑马学习笔记]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/135658661</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/135658661</guid><author>dasgs5a64</author><pubDate>Sat, 20 Jan 2024 08:21:15 +0800</pubDate><description><![CDATA[变量存在栈中，变量值存放在堆中。]]></description><category></category></item><item><title><![CDATA[24行测备考]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/135653204</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/135653204</guid><author>dasgs5a64</author><pubDate>Thu, 18 Jan 2024 19:19:28 +0800</pubDate><description><![CDATA[解题方法：搞清楚谁是因谁是果，含“有些”大部分是错的。因果倒置：选项原因和结果互换位置，则。对比实验_原因推论(对策建议)另有他因：归因折扣原则。]]></description><category></category></item><item><title><![CDATA[24暨大848自命题考研]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/134899169</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/134899169</guid><author>dasgs5a64</author><pubDate>Sat, 09 Dec 2023 19:12:49 +0800</pubDate><description><![CDATA[考研]]></description><category></category></item><item><title><![CDATA[超时订单管理系统 登录功能]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121475190</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121475190</guid><author>dasgs5a64</author><pubDate>Thu, 25 Nov 2021 18:54:42 +0800</pubDate><description><![CDATA[1.编写前端页面
2.设置首页
&lt;!--设置欢迎页面--&gt;
  &lt;welcome-file-list&gt;
    &lt;welcome-file&gt;login.jsp&lt;/welcome-file&gt;
  &lt;/welcome-file-list&gt;

3.编写dao层用户登录的接口
public interface UserDao {

    //得到要登录的用户
    public User getLoginUser(Connection connect.]]></description><category></category></item><item><title><![CDATA[ffmpeg+rtsp 推拉流技术]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121474390</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121474390</guid><author>dasgs5a64</author><pubDate>Mon, 22 Nov 2021 16:22:56 +0800</pubDate><description><![CDATA[视频播放器的原理


]]></description><category></category></item><item><title><![CDATA[超市订单管理系统 准备工作 部署和pojo Dao Filter]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121466538</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121466538</guid><author>dasgs5a64</author><pubDate>Mon, 22 Nov 2021 10:52:43 +0800</pubDate><description><![CDATA[driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306?useUnicode=true&amp;characterEncoding=utf-8
username=root
password=123456


2.编写数据库公共类
package com.kevin.dao;

import javax.imageio.IIOException;
import java.io.IOException;
import java.io.Inp...]]></description><category></category></item><item><title><![CDATA[JDBC事务 Jnuit测试]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121458148</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121458148</guid><author>dasgs5a64</author><pubDate>Sun, 21 Nov 2021 19:59:18 +0800</pubDate><description><![CDATA[acid 原子性，隔离，持久。一致
重读，虚读，幻读，四种隔离级别

junit也要导包


]]></description><category></category></item><item><title><![CDATA[JDBC的学习]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121457970</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121457970</guid><author>dasgs5a64</author><pubDate>Sun, 21 Nov 2021 19:04:24 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[监听器、过滤器的常见应用 权限登录]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121445393</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121445393</guid><author>dasgs5a64</author><pubDate>Sun, 21 Nov 2021 14:50:25 +0800</pubDate><description><![CDATA[监听器：
java GUi编程可以用来写外挂，还有游戏
过滤器：
用户登陆之后才能进入主页，用户注销后就不能进入主页了 实现权限登录

logout.jsp的写法是先获取session，然后if判断是否为空，不为空说明以及登陆成功有session，req.getSession().removeAttribut("");把session注销掉，然后转发到/login.jsp   session注销为空，但session依然存在
注意在dopost里写的是doget方法
error.jsp



...]]></description><category></category></item><item><title><![CDATA[listener监听器]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121445193</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121445193</guid><author>dasgs5a64</author><pubDate>Sat, 20 Nov 2021 20:39:20 +0800</pubDate><description><![CDATA[在xml文件里配置监听器


Session的自动销毁在xml文件里

]]></description><category></category></item><item><title><![CDATA[filter 过滤器]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121443865</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121443865</guid><author>dasgs5a64</author><pubDate>Sat, 20 Nov 2021 19:43:02 +0800</pubDate><description><![CDATA[过滤器类似于小区保安
用于

处理中文乱码
登录验证…


导包不要错 implements filter 或者extends httpfilter
实例化 初始化 提供服务 销毁 回收

需要在xml文件中配置
尽量写多一点的filter-mapping


]]></description><category></category></item><item><title><![CDATA[MVC三层架构]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121436351</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121436351</guid><author>dasgs5a64</author><pubDate>Sat, 20 Nov 2021 11:04:32 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[JSP标签、JSTl标签、EL表达式]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121324178</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121324178</guid><author>dasgs5a64</author><pubDate>Sat, 20 Nov 2021 10:45:28 +0800</pubDate><description><![CDATA[EL表达式
导入jstl包和standard包

获取数据
之形运算
获取web开发的常用对象
调用Java方法

所以的jstl标签都是&lt;c开头，不过jsp文件头文件要导入，maven 包也要导入


]]></description><category></category></item><item><title><![CDATA[Jsp基础语法]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121300300</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121300300</guid><author>dasgs5a64</author><pubDate>Sun, 14 Nov 2021 21:32:53 +0800</pubDate><description><![CDATA[JSP表达式
  &lt;%--JSP表达式
  作用:用来将程序的输出到客户端
  &lt;%=  变量或者表达式%&gt;
  --%&gt;
  &lt;%=new java.util.Date()%&gt;



]]></description><category></category></item><item><title><![CDATA[找开源的途径和技巧]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121223068</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121223068</guid><author>dasgs5a64</author><pubDate>Tue, 09 Nov 2021 10:42:11 +0800</pubDate><description><![CDATA[找开源项目的一些途径
• https://github.com/trending/
• https://github.com/521xueweihan/HelloGitHub
• https://github.com/ruanyf/weekly
• https://www.zhihu.com/column/mm-fe
• https://github.com/explore
• https://changelog.com/weekly/archive
特殊的查找资源小技巧-常用前缀后缀
• 找百科大全 aw]]></description><category></category></item><item><title><![CDATA[Redis set类型 （于2021.11.7中断学习）]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121197553</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121197553</guid><author>dasgs5a64</author><pubDate>Sun, 07 Nov 2021 21:26:55 +0800</pubDate><description><![CDATA[狂神p15视频

]]></description><category></category></item><item><title><![CDATA[JSP的讲解]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121146972</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121146972</guid><author>dasgs5a64</author><pubDate>Sat, 06 Nov 2021 11:38:28 +0800</pubDate><description><![CDATA[什么是JSP
java server pages：Java服务器端页面，也和Servlet一样，用于开发动态Web
最大的特点：

写JSP就像再写html
区别
HTMl只给用户提供动态的数据
JSP页面中可以迁出JAVA代码，为用户提供动态数据

JSP原理




C:\Users\Alex\AppData\Local\JetBrains\IntelliJIdea2020.1\tomcat\Unnamed_javaweb-session-cookie\work\Catalina\localhost\R]]></description><category></category></item><item><title><![CDATA[Session（敲重点）]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121109361</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121109361</guid><author>dasgs5a64</author><pubDate>Wed, 03 Nov 2021 21:56:32 +0800</pubDate><description><![CDATA[什么是Session：

服务器会给每一个用户（浏览器）创建一个Session对象
一个Session独占一个浏览器，只要浏览器没有关闭这个Session就会存在
用户登录之后，整个网站它都可以访问–&gt;保存用户的信息；保护购物车的信息

Session和Cookie的区别

print是打印在console，write是写在页面， print也是调用的write


思考session在创建的时候做了什么事情
session 在cookie里创建id(存储信息) 和servlet中context 共享]]></description><category></category></item><item><title><![CDATA[爬虫的概述]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121130754</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121130754</guid><author>dasgs5a64</author><pubDate>Wed, 03 Nov 2021 21:12:05 +0800</pubDate><description><![CDATA[使用requests发送请求


]]></description><category></category></item><item><title><![CDATA[Notebook 爬虫]]></title><link>https://blog.youkuaiyun.com/dasgs5a64/article/details/121114359</link><guid>https://blog.youkuaiyun.com/dasgs5a64/article/details/121114359</guid><author>dasgs5a64</author><pubDate>Wed, 03 Nov 2021 11:11:27 +0800</pubDate><description><![CDATA[https://www.bilibili.com/video/BV177411j7qJ?p=1
1.1 计划时间
计划11.26之前完成本次Python入门的学习
1.2 项目介绍

1.3 项目环境准备

Notebook
命令行操作以下内容，
pip install notebook
jupyter notebook
jupyter notebook --generate-config

按esc 变蓝色 按h  有快捷键帮助

爬虫


from urllib import request

url ]]></description><category></category></item></channel></rss>