mirror of
https://github.com/JasonsGong/JasonsGong.github.io.git
synced 2024-11-24 13:51:38 +08:00
273 lines
40 KiB
HTML
273 lines
40 KiB
HTML
<!DOCTYPE html><html lang="zh-CN" data-theme="light"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0,viewport-fit=cover"><title>Mybatis-Plus的使用教程 | The Blog</title><meta name="author" content="Jason"><meta name="copyright" content="Jason"><meta name="format-detection" content="telephone=no"><meta name="theme-color" content="#ffffff"><meta name="description" content="官方文档:MyBatis-Plus 常用插件1.公共字段填充 对于每个实体类共有的属性字段，例如创建时间、修改时间、创建人、修改人，我们可以使用公共字段填充，来统一填充这些字段，这样我们在创建这些实体类的对象的时候就不需要set这些属性，实现丝滑开发 1234@TableField(fill = FieldFill.INSERT) //插入的时候填充private String gmtCrea">
|
||
<meta property="og:type" content="article">
|
||
<meta property="og:title" content="Mybatis-Plus的使用教程">
|
||
<meta property="og:url" content="https://jasonsgong.gitee.io/posts/53306.html">
|
||
<meta property="og:site_name" content="The Blog">
|
||
<meta property="og:description" content="官方文档:MyBatis-Plus 常用插件1.公共字段填充 对于每个实体类共有的属性字段，例如创建时间、修改时间、创建人、修改人，我们可以使用公共字段填充，来统一填充这些字段，这样我们在创建这些实体类的对象的时候就不需要set这些属性，实现丝滑开发 1234@TableField(fill = FieldFill.INSERT) //插入的时候填充private String gmtCrea">
|
||
<meta property="og:locale" content="zh_CN">
|
||
<meta property="og:image" content="https://jasonsgong.gitee.io/img/4.png">
|
||
<meta property="article:published_time" content="2023-05-25T01:06:40.000Z">
|
||
<meta property="article:modified_time" content="2023-09-11T23:36:52.000Z">
|
||
<meta property="article:author" content="Jason">
|
||
<meta property="article:tag" content="SSM">
|
||
<meta name="twitter:card" content="summary">
|
||
<meta name="twitter:image" content="https://jasonsgong.gitee.io/img/4.png"><link rel="shortcut icon" href="/img/%E5%9B%BE%E6%A0%87.png"><link rel="canonical" href="https://jasonsgong.gitee.io/posts/53306.html"><link rel="preconnect" href="//fastly.jsdelivr.net"/><link rel="preconnect" href="//hm.baidu.com"/><link rel="preconnect" href="//busuanzi.ibruce.info"/><link rel="stylesheet" href="/css/index.css"><link rel="stylesheet" href="/cdn/icon/fontawesome-free/css/all.min.css" media="print" onload="this.media='all'"><link rel="stylesheet" href="/cdn/css/snackbar.min.css" media="print" onload="this.media='all'"><link rel="stylesheet" href="/cdn/css/fancybox.min.css" media="print" onload="this.media='all'"><script>var _hmt = _hmt || [];
|
||
(function() {
|
||
var hm = document.createElement("script");
|
||
hm.src = "https://hm.baidu.com/hm.js?aad83e413776c1cd5d11ed7eeedd98f7";
|
||
var s = document.getElementsByTagName("script")[0];
|
||
s.parentNode.insertBefore(hm, s);
|
||
})();
|
||
</script><script>const GLOBAL_CONFIG = {
|
||
root: '/',
|
||
algolia: undefined,
|
||
localSearch: {"path":"/search.xml","preload":true,"top_n_per_article":1,"unescape":false,"languages":{"hits_empty":"找不到您查询的内容：${query}","hits_stats":"共找到 ${hits} 篇文章"}},
|
||
translate: undefined,
|
||
noticeOutdate: undefined,
|
||
highlight: {"plugin":"highlighjs","highlightCopy":true,"highlightLang":true,"highlightHeightLimit":400},
|
||
copy: {
|
||
success: '复制成功',
|
||
error: '复制错误',
|
||
noSupport: '浏览器不支持'
|
||
},
|
||
relativeDate: {
|
||
homepage: true,
|
||
post: true
|
||
},
|
||
runtime: '天',
|
||
dateSuffix: {
|
||
just: '刚刚',
|
||
min: '分钟前',
|
||
hour: '小时前',
|
||
day: '天前',
|
||
month: '个月前'
|
||
},
|
||
copyright: undefined,
|
||
lightbox: 'mediumZoom',
|
||
Snackbar: {"chs_to_cht":"你已切换为繁体","cht_to_chs":"你已切换为简体","day_to_night":"你已切换为深色模式","night_to_day":"你已切换为浅色模式","bgLight":"#006650","bgDark":"#006650","position":"top-center"},
|
||
source: {
|
||
justifiedGallery: {
|
||
js: 'https://fastly.jsdelivr.net/npm/flickr-justified-gallery/dist/fjGallery.min.js',
|
||
css: 'https://fastly.jsdelivr.net/npm/flickr-justified-gallery/dist/fjGallery.min.css'
|
||
}
|
||
},
|
||
isPhotoFigcaption: false,
|
||
islazyload: false,
|
||
isAnchor: true,
|
||
percent: {
|
||
toc: true,
|
||
rightside: false,
|
||
},
|
||
autoDarkmode: true
|
||
}</script><script id="config-diff">var GLOBAL_CONFIG_SITE = {
|
||
title: 'Mybatis-Plus的使用教程',
|
||
isPost: true,
|
||
isHome: false,
|
||
isHighlightShrink: false,
|
||
isToc: true,
|
||
postUpdate: '2023-09-12 07:36:52'
|
||
}</script><noscript><style type="text/css">
|
||
#nav {
|
||
opacity: 1
|
||
}
|
||
.justified-gallery img {
|
||
opacity: 1
|
||
}
|
||
|
||
#recent-posts time,
|
||
#post-meta time {
|
||
display: inline !important
|
||
}
|
||
</style></noscript><script>(win=>{
|
||
win.saveToLocal = {
|
||
set: function setWithExpiry(key, value, ttl) {
|
||
if (ttl === 0) return
|
||
const now = new Date()
|
||
const expiryDay = ttl * 86400000
|
||
const item = {
|
||
value: value,
|
||
expiry: now.getTime() + expiryDay,
|
||
}
|
||
localStorage.setItem(key, JSON.stringify(item))
|
||
},
|
||
|
||
get: function getWithExpiry(key) {
|
||
const itemStr = localStorage.getItem(key)
|
||
|
||
if (!itemStr) {
|
||
return undefined
|
||
}
|
||
const item = JSON.parse(itemStr)
|
||
const now = new Date()
|
||
|
||
if (now.getTime() > item.expiry) {
|
||
localStorage.removeItem(key)
|
||
return undefined
|
||
}
|
||
return item.value
|
||
}
|
||
}
|
||
|
||
win.getScript = url => new Promise((resolve, reject) => {
|
||
const script = document.createElement('script')
|
||
script.src = url
|
||
script.async = true
|
||
script.onerror = reject
|
||
script.onload = script.onreadystatechange = function() {
|
||
const loadState = this.readyState
|
||
if (loadState && loadState !== 'loaded' && loadState !== 'complete') return
|
||
script.onload = script.onreadystatechange = null
|
||
resolve()
|
||
}
|
||
document.head.appendChild(script)
|
||
})
|
||
|
||
win.getCSS = (url,id = false) => new Promise((resolve, reject) => {
|
||
const link = document.createElement('link')
|
||
link.rel = 'stylesheet'
|
||
link.href = url
|
||
if (id) link.id = id
|
||
link.onerror = reject
|
||
link.onload = link.onreadystatechange = function() {
|
||
const loadState = this.readyState
|
||
if (loadState && loadState !== 'loaded' && loadState !== 'complete') return
|
||
link.onload = link.onreadystatechange = null
|
||
resolve()
|
||
}
|
||
document.head.appendChild(link)
|
||
})
|
||
|
||
win.activateDarkMode = function () {
|
||
document.documentElement.setAttribute('data-theme', 'dark')
|
||
if (document.querySelector('meta[name="theme-color"]') !== null) {
|
||
document.querySelector('meta[name="theme-color"]').setAttribute('content', '#0d0d0d')
|
||
}
|
||
}
|
||
win.activateLightMode = function () {
|
||
document.documentElement.setAttribute('data-theme', 'light')
|
||
if (document.querySelector('meta[name="theme-color"]') !== null) {
|
||
document.querySelector('meta[name="theme-color"]').setAttribute('content', '#ffffff')
|
||
}
|
||
}
|
||
const t = saveToLocal.get('theme')
|
||
|
||
const isDarkMode = window.matchMedia('(prefers-color-scheme: dark)').matches
|
||
const isLightMode = window.matchMedia('(prefers-color-scheme: light)').matches
|
||
const isNotSpecified = window.matchMedia('(prefers-color-scheme: no-preference)').matches
|
||
const hasNoSupport = !isDarkMode && !isLightMode && !isNotSpecified
|
||
|
||
if (t === undefined) {
|
||
if (isLightMode) activateLightMode()
|
||
else if (isDarkMode) activateDarkMode()
|
||
else if (isNotSpecified || hasNoSupport) {
|
||
const now = new Date()
|
||
const hour = now.getHours()
|
||
const isNight = hour <= 8 || hour >= 22
|
||
isNight ? activateDarkMode() : activateLightMode()
|
||
}
|
||
window.matchMedia('(prefers-color-scheme: dark)').addListener(function (e) {
|
||
if (saveToLocal.get('theme') === undefined) {
|
||
e.matches ? activateDarkMode() : activateLightMode()
|
||
}
|
||
})
|
||
} else if (t === 'light') activateLightMode()
|
||
else activateDarkMode()
|
||
|
||
const asideStatus = saveToLocal.get('aside-status')
|
||
if (asideStatus !== undefined) {
|
||
if (asideStatus === 'hide') {
|
||
document.documentElement.classList.add('hide-aside')
|
||
} else {
|
||
document.documentElement.classList.remove('hide-aside')
|
||
}
|
||
}
|
||
|
||
const detectApple = () => {
|
||
if(/iPad|iPhone|iPod|Macintosh/.test(navigator.userAgent)){
|
||
document.documentElement.classList.add('apple')
|
||
}
|
||
}
|
||
detectApple()
|
||
})(window)</script><script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script><script type="text/javascript" src ="/js/welcome.js" ></script><script src="/js/sweetalert.js"></script><link rel="stylesheet" href="/css/sweetalert.css"><!-- hexo injector head_end start --><link rel="stylesheet" href="https://npm.elemecdn.com/hexo-butterfly-swiper/lib/swiper.min.css" media="print" onload="this.media='all'"><link rel="stylesheet" href="https://npm.elemecdn.com/hexo-butterfly-swiper/lib/swiperstyle.css" media="print" onload="this.media='all'"><!-- hexo injector head_end end --><meta name="generator" content="Hexo 6.3.0"></head><body><div id="sidebar"><div id="menu-mask"></div><div id="sidebar-menus"><div class="avatar-img is-center"><img src="/img/avatar.jpg" onerror="onerror=null;src='/img/loading.gif'" alt="avatar"/></div><div class="sidebar-site-data site-data is-center"><a href="/archives/"><div class="headline">文章</div><div class="length-num">61</div></a><a href="/tags/"><div class="headline">标签</div><div class="length-num">39</div></a><a href="/categories/"><div class="headline">分类</div><div class="length-num">10</div></a></div><br/><div class="menus_items"><div class="menus_item"><a class="site-page" target="_blank" rel="noopener" href="https://gitee.com/JasonsGong/jasonsgong/pages"><i class="fa-fw fas fa-sync-alt"></i><span> 更新</span></a></div><div class="menus_item"><a class="site-page" target="_blank" rel="noopener" href="https://www.tutorialspoint.com/compile_java8_online.php"><i class="fa-fw fas fa-code"></i><span> 代码</span></a></div><div class="menus_item"><a class="site-page" href="/notice/"><i class="fa-fw fas fa-stream"></i><span> 公告</span></a></div><div class="menus_item"><a class="site-page" href="/website/"><i class="fa-fw fas fa-list"></i><span> 网址</span></a></div><div class="menus_item"><a class="site-page" href="/"><i class="fa-fw fas fa-home"></i><span> 主页</span></a></div></div></div></div><div class="post" id="body-wrap"><header class="not-top-img" id="page-header"><nav id="nav"><span id="blog-info"><a href="/" title="The Blog"><img class="site-icon" src="/img/logo.png"/><span class="site-name">The Blog</span></a></span><div id="menus"><div id="search-button"><a class="site-page social-icon search" href="javascript:void(0);"><i class="fas fa-search fa-fw"></i><span> 搜索</span></a></div><div class="menus_items"><div class="menus_item"><a class="site-page" target="_blank" rel="noopener" href="https://gitee.com/JasonsGong/jasonsgong/pages"><i class="fa-fw fas fa-sync-alt"></i><span> 更新</span></a></div><div class="menus_item"><a class="site-page" target="_blank" rel="noopener" href="https://www.tutorialspoint.com/compile_java8_online.php"><i class="fa-fw fas fa-code"></i><span> 代码</span></a></div><div class="menus_item"><a class="site-page" href="/notice/"><i class="fa-fw fas fa-stream"></i><span> 公告</span></a></div><div class="menus_item"><a class="site-page" href="/website/"><i class="fa-fw fas fa-list"></i><span> 网址</span></a></div><div class="menus_item"><a class="site-page" href="/"><i class="fa-fw fas fa-home"></i><span> 主页</span></a></div></div><div id="toggle-menu"><a class="site-page" href="javascript:void(0);"><i class="fas fa-bars fa-fw"></i></a></div></div></nav></header><main class="layout" id="content-inner"><div id="post"><div id="post-info"><h1 class="post-title">Mybatis-Plus的使用教程</h1><div id="post-meta"><div class="meta-firstline"><span class="post-meta-date"><i class="far fa-calendar-alt fa-fw post-meta-icon"></i><span class="post-meta-label">发表于</span><time class="post-meta-date-created" datetime="2023-05-25T01:06:40.000Z" title="发表于 2023-05-25 09:06:40">2023-05-25</time><span class="post-meta-separator">|</span><i class="fas fa-history fa-fw post-meta-icon"></i><span class="post-meta-label">更新于</span><time class="post-meta-date-updated" datetime="2023-09-11T23:36:52.000Z" title="更新于 2023-09-12 07:36:52">2023-09-12</time></span><span class="post-meta-categories"><span class="post-meta-separator">|</span><i class="fas fa-inbox fa-fw post-meta-icon"></i><a class="post-meta-categories" href="/categories/%E5%90%8E%E7%AB%AF/">后端</a></span></div><div class="meta-secondline"><span class="post-meta-separator">|</span><span class="post-meta-wordcount"><i class="far fa-file-word fa-fw post-meta-icon"></i><span class="post-meta-label">字数总计:</span><span class="word-count">658</span><span class="post-meta-separator">|</span><i class="far fa-clock fa-fw post-meta-icon"></i><span class="post-meta-label">阅读时长:</span><span>2分钟</span></span><span class="post-meta-separator">|</span><span class="post-meta-pv-cv" id="" data-flag-title="Mybatis-Plus的使用教程"><i class="far fa-eye fa-fw post-meta-icon"></i><span class="post-meta-label">阅读量:</span><span id="busuanzi_value_page_pv"><i class="fa-solid fa-spinner fa-spin"></i></span></span></div></div></div><article class="post-content" id="article-container"><p><strong>官方文档:<a target="_blank" rel="noopener" href="https://www.baomidou.com/">MyBatis-Plus</a></strong></p>
|
||
<h1 id="常用插件"><a href="#常用插件" class="headerlink" title="常用插件"></a>常用插件</h1><h2 id="1-公共字段填充"><a href="#1-公共字段填充" class="headerlink" title="1.公共字段填充"></a>1.公共字段填充</h2><p> <strong>对于每个实体类共有的属性字段，例如创建时间、修改时间、创建人、修改人，我们可以使用公共字段填充，来统一填充这些字段，这样我们在创建这些实体类的对象的时候就不需要set这些属性，实现丝滑开发</strong></p>
|
||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@TableField(fill = FieldFill.INSERT)</span> <span class="comment">//插入的时候填充</span></span><br><span class="line"><span class="keyword">private</span> String gmtCreate;</span><br><span class="line"><span class="meta">@TableField(fill = FieldFill.INSERT_UPDATE)</span><span class="comment">//插入和修改的时候填充</span></span><br><span class="line"><span class="keyword">private</span> String gmtModified;</span><br></pre></td></tr></table></figure>
|
||
|
||
<p>第一种配置的方法</p>
|
||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> com.itheima.config;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;</span><br><span class="line"><span class="keyword">import</span> org.apache.ibatis.reflection.MetaObject;</span><br><span class="line"><span class="keyword">import</span> org.springframework.stereotype.Component;</span><br><span class="line"></span><br><span class="line"><span class="keyword">import</span> java.time.LocalDateTime;</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@author</span> GongChangjiang</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@version</span> 1.0</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Date</span> 2023/5/25</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@Description</span> 公共字段填充的配置</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="meta">@Component</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">MyMetaObjectHandler</span> <span class="keyword">implements</span> <span class="title class_">MetaObjectHandler</span> {</span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 插入时的字段填充</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@param</span> metaObject 元对象</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">insertFill</span><span class="params">(MetaObject metaObject)</span> {</span><br><span class="line"> <span class="comment">//创建时间的字段填充</span></span><br><span class="line"> metaObject.setValue(<span class="string">"gmtCreate"</span>, LocalDateTime.now());</span><br><span class="line"> <span class="comment">//修改时间的字段填充</span></span><br><span class="line"> metaObject.setValue(<span class="string">"gmtModified"</span>, LocalDateTime.now());</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 修改时的字段填充</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@param</span> metaObject 元对象</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">updateFill</span><span class="params">(MetaObject metaObject)</span> {</span><br><span class="line"> <span class="comment">//修改时间的字段填充</span></span><br><span class="line"> metaObject.setValue(<span class="string">"gmtModified"</span>, LocalDateTime.now());</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
|
||
|
||
<p>第二种配置的方法</p>
|
||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta">@Component</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">MyMetaObjectHandler</span> <span class="keyword">implements</span> <span class="title class_">MetaObjectHandler</span> {</span><br><span class="line"></span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">insertFill</span><span class="params">(MetaObject metaObject)</span> {</span><br><span class="line"> <span class="comment">// 起始版本 3.3.0(推荐使用)</span></span><br><span class="line"> <span class="built_in">this</span>.strictInsertFill(metaObject, <span class="string">"createTime"</span>, LocalDateTime.class, LocalDateTime.now()); </span><br><span class="line"> <span class="comment">// 或者</span></span><br><span class="line"> <span class="built_in">this</span>.strictInsertFill(metaObject, <span class="string">"createTime"</span>, () -> LocalDateTime.now(), LocalDateTime.class); <span class="comment">// 起始版本 3.3.3(推荐)</span></span><br><span class="line"> <span class="comment">// 或者</span></span><br><span class="line"> <span class="comment">// 也可以使用(3.3.0 该方法有bug)</span></span><br><span class="line"> <span class="built_in">this</span>.fillStrategy(metaObject, <span class="string">"createTime"</span>, LocalDateTime.now()); </span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="meta">@Override</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">void</span> <span class="title function_">updateFill</span><span class="params">(MetaObject metaObject)</span> {</span><br><span class="line"> <span class="comment">// 起始版本 3.3.0(推荐)</span></span><br><span class="line"> <span class="built_in">this</span>.strictUpdateFill(metaObject, <span class="string">"updateTime"</span>, LocalDateTime.class, LocalDateTime.now());</span><br><span class="line"> <span class="comment">// 或者</span></span><br><span class="line"> <span class="built_in">this</span>.strictUpdateFill(metaObject, <span class="string">"updateTime"</span>, () -> LocalDateTime.now(), LocalDateTime.class); <span class="comment">// 起始版本 3.3.3(推荐)</span></span><br><span class="line"> <span class="comment">// 或者</span></span><br><span class="line"> <span class="comment">// 也可以使用(3.3.0 该方法有bug)</span></span><br><span class="line"> <span class="built_in">this</span>.fillStrategy(metaObject, <span class="string">"updateTime"</span>, LocalDateTime.now()); </span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
|
||
|
||
<h2 id="2-逻辑删除"><a href="#2-逻辑删除" class="headerlink" title="2.逻辑删除"></a>2.逻辑删除</h2><p><strong>1.配置全局的配置文件(可以省略)</strong></p>
|
||
<figure class="highlight yaml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="attr">mybatis-plus:</span></span><br><span class="line"> <span class="attr">global-config:</span></span><br><span class="line"> <span class="attr">db-config:</span></span><br><span class="line"> <span class="attr">logic-delete-value:</span> <span class="number">1</span> <span class="comment"># 逻辑已删除值(默认为 1)</span></span><br><span class="line"> <span class="attr">logic-not-delete-value:</span> <span class="number">0</span> <span class="comment"># 逻辑未删除值(默认为 0)</span></span><br></pre></td></tr></table></figure>
|
||
|
||
<p><strong>2.配置逻辑删除的组件(3.1.1版本之后不需要这一步，可以省略)</strong></p>
|
||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">import</span> com.baomidou.mybatisplus.core.injector.ISqlInjector;</span><br><span class="line"><span class="keyword">import</span> com.baomidou.mybatisplus.extension.injector.LogicSqlInjector;</span><br><span class="line"><span class="keyword">import</span> org.springframework.context.annotation.Bean;</span><br><span class="line"><span class="keyword">import</span> org.springframework.context.annotation.Configuration;</span><br><span class="line"></span><br><span class="line"><span class="meta">@Configuration</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">class</span> <span class="title class_">MyBatisPlusConfiguration</span> {</span><br><span class="line"></span><br><span class="line"> <span class="meta">@Bean</span></span><br><span class="line"> <span class="keyword">public</span> ISqlInjector <span class="title function_">sqlInjector</span><span class="params">()</span> {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> <span class="title class_">LogicSqlInjector</span>();</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
|
||
|
||
<p><strong>3.在实体类上逻辑删除的字段上加上逻辑删除的注解</strong></p>
|
||
<figure class="highlight java"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//value:表示不删除对应的值</span></span><br><span class="line"><span class="comment">//delval:表示删除对应的值</span></span><br><span class="line"><span class="comment">//正常的情况下1代表删除，0代表未删除，这里我们没有使用这个规则，下面设置的是自己的规则</span></span><br><span class="line"><span class="meta">@TableLogic(value = "1",delval = "0")</span></span><br></pre></td></tr></table></figure>
|
||
|
||
|
||
|
||
</article><div class="tag_share"><div class="post-meta__tag-list"><a class="post-meta__tags" href="/tags/SSM/">SSM</a></div><div class="post_share"><div class="social-share" data-image="/img/4.png" data-sites="wechat,weibo,qq"></div><link rel="stylesheet" href="/cdn/css/share.min.css" media="print" onload="this.media='all'"><script src="/cdn/js/social-share.min.js" defer></script></div></div><div class="post-reward"><div class="reward-button"><i class="fas fa-qrcode"></i> 打赏</div><div class="reward-main"><ul class="reward-all"><li class="reward-item"><a href="/img/wechat.jpg" target="_blank"><img class="post-qr-code-img" src="/img/wechat.jpg" alt="微信"/></a><div class="post-qr-code-desc">微信</div></li><li class="reward-item"><a href="/img/alipay.jpg" target="_blank"><img class="post-qr-code-img" src="/img/alipay.jpg" alt="支付宝"/></a><div class="post-qr-code-desc">支付宝</div></li></ul></div></div><br/><div id="post-comment"><div class="comment-head"><div class="comment-headline"><i class="far fa-comment-alt fa-fw"></i><span> 评论</span></div></div><div class="comment-wrap"><div><div id="gitalk-container"></div></div></div></div></div><div class="aside-content" id="aside-content"><div class="card-widget card-info"><div class="is-center"><div class="avatar-img"><img src="/img/avatar.jpg" onerror="this.onerror=null;this.src='/img/loading.gif'" alt="avatar"/></div><div class="author-info__name">Jason</div><div class="author-info__description">Debug the World！</div></div><div class="card-info-data site-data is-center"><a href="/archives/"><div class="headline">文章</div><div class="length-num">61</div></a><a href="/tags/"><div class="headline">标签</div><div class="length-num">39</div></a><a href="/categories/"><div class="headline">分类</div><div class="length-num">10</div></a></div><a id="card-info-btn"><i class="fab fa-microsoft"></i><span>Ctrl + D 收藏</span></a><div class="card-info-social-icons is-center"><a class="social-icon" href="https://github.com/JasonsGong" target="_blank" title="Github"><i class="fab fa-github"></i></a><a class="social-icon" href="tencent://AddContact/?fromId=45&fromSubId=1&subcmd=all&uin=2602183349&website=www.oicqzone.com" target="_blank" title="QQ"><i class="fab fa-qq"></i></a><a class="social-icon" href="mailto:2602183349@qq.com" target="_blank" title="Email"><i class="fas fa-envelope-open-text"></i></a><a class="social-icon" href="https://github.com/JasonsGong?tab=repositories" target="_blank" title="代码仓库"><i class="fas fa-database"></i></a></div></div><div class="card-widget card-announcement"><div class="item-headline"><i class="fas fa-bullhorn fa-shake"></i><span>公告</span></div><div class="announcement_content">本网站是静态网站,更新页面资源请使用Ctrl+F5;若网站内文章对你有帮助,请使用Ctrl+D收藏该网站！</div></div><div class="sticky_layout"><div class="card-widget" id="card-toc"><div class="item-headline"><i class="fas fa-stream"></i><span>目录</span><span class="toc-percentage"></span></div><div class="toc-content is-expand"><ol class="toc"><li class="toc-item toc-level-1"><a class="toc-link" href="#%E5%B8%B8%E7%94%A8%E6%8F%92%E4%BB%B6"><span class="toc-text">常用插件</span></a><ol class="toc-child"><li class="toc-item toc-level-2"><a class="toc-link" href="#1-%E5%85%AC%E5%85%B1%E5%AD%97%E6%AE%B5%E5%A1%AB%E5%85%85"><span class="toc-text">1.公共字段填充</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#2-%E9%80%BB%E8%BE%91%E5%88%A0%E9%99%A4"><span class="toc-text">2.逻辑删除</span></a></li></ol></li></ol></div></div><div class="card-widget card-recent-post"><div class="item-headline"><i class="fas fa-history"></i><span>最近更新</span></div><div class="aside-list"><div class="aside-list-item"><a class="thumbnail" href="/posts/46317.html" title="面试专题"><img src="/img/1.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="面试专题"/></a><div class="content"><a class="title" href="/posts/46317.html" title="面试专题">面试专题</a><time datetime="2024-04-02T05:34:50.703Z" title="更新于 2024-04-02 13:34:50">2024-04-02</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/posts/14438.html" title="常见问题和细节知识"><img src="/img/2.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="常见问题和细节知识"/></a><div class="content"><a class="title" href="/posts/14438.html" title="常见问题和细节知识">常见问题和细节知识</a><time datetime="2024-04-02T02:54:28.390Z" title="更新于 2024-04-02 10:54:28">2024-04-02</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/posts/18459.html" title="Git命令速查"><img src="/img/8.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="Git命令速查"/></a><div class="content"><a class="title" href="/posts/18459.html" title="Git命令速查">Git命令速查</a><time datetime="2024-04-02T02:53:33.764Z" title="更新于 2024-04-02 10:53:33">2024-04-02</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/posts/63724.html" title="IDEA常用快捷键"><img src="/img/5.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="IDEA常用快捷键"/></a><div class="content"><a class="title" href="/posts/63724.html" title="IDEA常用快捷键">IDEA常用快捷键</a><time datetime="2024-04-02T02:53:27.285Z" title="更新于 2024-04-02 10:53:27">2024-04-02</time></div></div><div class="aside-list-item"><a class="thumbnail" href="/posts/40445.html" title="数据结构与算法"><img src="/img/10.png" onerror="this.onerror=null;this.src='/img/404.jpg'" alt="数据结构与算法"/></a><div class="content"><a class="title" href="/posts/40445.html" title="数据结构与算法">数据结构与算法</a><time datetime="2024-04-02T02:52:59.937Z" title="更新于 2024-04-02 10:52:59">2024-04-02</time></div></div></div></div></div></div></main><footer id="footer"><div id="footer-wrap"></div></footer></div><div id="rightside"><div id="rightside-config-hide"><button id="readmode" type="button" title="阅读模式"><i class="fas fa-book-open"></i></button><button id="darkmode" type="button" title="浅色和深色模式转换"><i class="fas fa-adjust"></i></button><button id="hide-aside-btn" type="button" title="单栏和双栏切换"><i class="fas fa-arrows-alt-h"></i></button></div><div id="rightside-config-show"><button id="rightside_config" type="button" title="设置"><i class="fas fa-cog fa-spin"></i></button><button class="close" id="mobile-toc-button" type="button" title="目录"><i class="fas fa-list-ul"></i></button><a id="to_comment" href="#post-comment" title="直达评论"><i class="fas fa-comment-alt"></i></a><button id="go-up" type="button" title="回到顶部"><span class="scroll-percent"></span><i class="fas fa-arrow-up"></i></button></div></div><div><script src="/js/utils.js"></script><script src="/js/main.js"></script><script src="/cdn/js/medium-zoom.min.js"></script><script src="/cdn/js/instantpage.min.js" type="module"></script><script src="/cdn/js/snackbar.min.js"></script><div class="js-pjax"><script>function loadGitalk () {
|
||
function initGitalk () {
|
||
var gitalk = new Gitalk(Object.assign({
|
||
clientID: '00fb27b1e484536359c2',
|
||
clientSecret: 'be41a12281c68b6e228d1a27e8d08aeb91541145',
|
||
repo: 'BlogComment',
|
||
owner: 'JasonsGong',
|
||
admin: ['JasonsGong'],
|
||
id: '0d20763a5602b7a5c4189c9bc6915912',
|
||
updateCountCallback: commentCount
|
||
},null))
|
||
|
||
gitalk.render('gitalk-container')
|
||
}
|
||
|
||
if (typeof Gitalk === 'function') initGitalk()
|
||
else {
|
||
getCSS('/cdn/css/gitalk.min.css')
|
||
getScript('/cdn/js/gitalk.min.js').then(initGitalk)
|
||
}
|
||
}
|
||
|
||
function commentCount(n){
|
||
let isCommentCount = document.querySelector('#post-meta .gitalk-comment-count')
|
||
if (isCommentCount) {
|
||
isCommentCount.textContent= n
|
||
}
|
||
}
|
||
|
||
if ('Gitalk' === 'Gitalk' || !true) {
|
||
if (true) btf.loadComment(document.getElementById('gitalk-container'), loadGitalk)
|
||
else loadGitalk()
|
||
} else {
|
||
function loadOtherComment () {
|
||
loadGitalk()
|
||
}
|
||
}</script></div><script async data-pjax src="//busuanzi.ibruce.info/busuanzi/2.3/busuanzi.pure.mini.js"></script><div id="local-search"><div class="search-dialog"><nav class="search-nav"><span class="search-dialog-title">搜索</span><span id="loading-status"></span><button class="search-close-button"><i class="fas fa-times"></i></button></nav><div class="is-center" id="loading-database"><i class="fas fa-spinner fa-pulse"></i><span> 数据库加载中</span></div><div class="search-wrap"><div id="local-search-input"><div class="local-search-box"><input class="local-search-box--input" placeholder="搜索文章" type="text"/></div></div><br/><div class="no-result" id="local-search-results"></div><div id="local-search-stats-wrap"></div></div></div><div id="search-mask"></div><script src="/js/search/local-search.js"></script></div></div><!-- hexo injector body_end start --><script data-pjax>
|
||
function butterfly_swiper_injector_config(){
|
||
var parent_div_git = document.getElementById('recent-posts');
|
||
var item_html = '<div class="recent-post-item" style="height: auto;width: 100%"><div class="blog-slider swiper-container-fade swiper-container-horizontal" id="swiper_container"><div class="blog-slider__wrp swiper-wrapper" style="transition-duration: 0ms;"><div class="blog-slider__item swiper-slide" style="width: 750px; opacity: 1; transform: translate3d(0px, 0px, 0px); transition-duration: 0ms;"><a class="blog-slider__img" href="posts/19306.html" alt=""><img width="48" height="48" src="/img/1.png" alt="" onerror="this.src=https://unpkg.zhimg.com/akilar-candyassets/image/loading.gif; this.onerror = null;"/></a><div class="blog-slider__content"><span class="blog-slider__code">2023-04-21</span><a class="blog-slider__title" href="posts/19306.html" alt="">Docker容器化技术</a><div class="blog-slider__text">Docker</div><a class="blog-slider__button" href="posts/19306.html" alt="">详情 </a></div></div><div class="blog-slider__item swiper-slide" style="width: 750px; opacity: 1; transform: translate3d(0px, 0px, 0px); transition-duration: 0ms;"><a class="blog-slider__img" href="posts/47003.html" alt=""><img width="48" height="48" src="/img/9.png" alt="" onerror="this.src=https://unpkg.zhimg.com/akilar-candyassets/image/loading.gif; this.onerror = null;"/></a><div class="blog-slider__content"><span class="blog-slider__code">2023-03-10</span><a class="blog-slider__title" href="posts/47003.html" alt="">常用正则表达式大全</a><div class="blog-slider__text">正则表达式</div><a class="blog-slider__button" href="posts/47003.html" alt="">详情 </a></div></div><div class="blog-slider__item swiper-slide" style="width: 750px; opacity: 1; transform: translate3d(0px, 0px, 0px); transition-duration: 0ms;"><a class="blog-slider__img" href="posts/20683.html" alt=""><img width="48" height="48" src="/img/3.png" alt="" onerror="this.src=https://unpkg.zhimg.com/akilar-candyassets/image/loading.gif; this.onerror = null;"/></a><div class="blog-slider__content"><span class="blog-slider__code">2023-06-05</span><a class="blog-slider__title" href="posts/20683.html" alt="">Linux中开发环境的搭建</a><div class="blog-slider__text">环境搭建</div><a class="blog-slider__button" href="posts/20683.html" alt="">详情 </a></div></div><div class="blog-slider__item swiper-slide" style="width: 750px; opacity: 1; transform: translate3d(0px, 0px, 0px); transition-duration: 0ms;"><a class="blog-slider__img" href="posts/63333.html" alt=""><img width="48" height="48" src="/img/10.png" alt="" onerror="this.src=https://unpkg.zhimg.com/akilar-candyassets/image/loading.gif; this.onerror = null;"/></a><div class="blog-slider__content"><span class="blog-slider__code">2023-06-03</span><a class="blog-slider__title" href="posts/63333.html" alt="">开发环境的搭建</a><div class="blog-slider__text">环境搭建</div><a class="blog-slider__button" href="posts/63333.html" alt="">详情 </a></div></div></div><div class="blog-slider__pagination swiper-pagination-clickable swiper-pagination-bullets"></div></div></div>';
|
||
if (parent_div_git !== null && typeof parent_div_git !== 'undefined') {
|
||
parent_div_git.insertAdjacentHTML("afterbegin",item_html)
|
||
}
|
||
}
|
||
var elist = 'undefined'.split(',');
|
||
var cpage = location.pathname;
|
||
var epage = 'all';
|
||
var flag = 0;
|
||
|
||
for (var i=0;i<elist.length;i++){
|
||
if (cpage.includes(elist[i])){
|
||
flag++;
|
||
}
|
||
}
|
||
|
||
if ((epage ==='all')&&(flag == 0)){
|
||
butterfly_swiper_injector_config();
|
||
}
|
||
else if (epage === cpage){
|
||
butterfly_swiper_injector_config();
|
||
}
|
||
</script><script defer src="https://npm.elemecdn.com/hexo-butterfly-swiper/lib/swiper.min.js"></script><script defer data-pjax src="https://npm.elemecdn.com/hexo-butterfly-swiper/lib/swiper_init.js"></script><!-- hexo injector body_end end --></body></html> |