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<li>
<p><strong>问题修复</strong></p>
<ul>
<li> <label class="label_p8vM" title="修复" style="background-color:#9c26b0"><svg viewBox="0 0 1024 1024" width="14px" height="14px" style="display:block" class="icon_knQK"><path d="M940 512H792V412c76.8 0 139-62.2 139-139 0-4.4-3.6-8-8-8h-60c-4.4 0-8 3.6-8 8 0 34.8-28.2 63-63 63H232c-34.8 0-63-28.2-63-63 0-4.4-3.6-8-8-8h-60c-4.4 0-8 3.6-8 8 0 76.8 62.2 139 139 139v100H84c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h148v96c0 6.5 0.2 13 0.7 19.3C164.1 728.6 116 796.7 116 876c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8 0-44.2 23.9-82.9 59.6-103.7 6 17.2 13.6 33.6 22.7 49 24.3 41.5 59 76.2 100.5 100.5S460.5 960 512 960s99.8-13.9 141.3-38.2c41.5-24.3 76.2-59 100.5-100.5 9.1-15.5 16.7-31.9 22.7-49C812.1 793.1 836 831.8 836 876c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8 0-79.3-48.1-147.4-116.7-176.7 0.4-6.4 0.7-12.8 0.7-19.3v-96h148c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8zM716 680c0 36.8-9.7 72-27.8 102.9-17.7 30.3-43 55.6-73.3 73.3-20.1 11.8-42 20-64.9 24.3V484c0-4.4-3.6-8-8-8h-60c-4.4 0-8 3.6-8 8v396.5c-22.9-4.3-44.8-12.5-64.9-24.3-30.3-17.7-55.6-43-73.3-73.3C317.7 752 308 716.8 308 680V412h408v268z" fill="white"></path><path d="M304 280h56c4.4 0 8-3.6 8-8 0-28.3 5.9-53.2 17.1-73.5 10.6-19.4 26-34.8 45.4-45.4C450.9 142 475.7 136 504 136h16c28.3 0 53.2 5.9 73.5 17.1 19.4 10.6 34.8 26 45.4 45.4C650 218.9 656 243.7 656 272c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8 0-40-8.8-76.7-25.9-108.1-17.2-31.5-42.5-56.8-74-74C596.7 72.8 560 64 520 64h-16c-40 0-76.7 8.8-108.1 25.9-31.5 17.2-56.8 42.5-74 74C304.8 195.3 296 232 296 272c0 4.4 3.6 8 8 8z" fill="white"></path></svg> <!-- -->修复</label> <code>Scoped.CreateUowAsync</code> 作用域工作单元异常无法回滚问题 <sup>4.8.8.44</sup> <sup>⏱️2023.09.23</sup> <a href="https://gitee.com/dotnetchina/Furion/issues/I833I9" target="_blank" rel="noopener noreferrer">#I833I9</a></li>
</ul>
</li>
</ul></div></div></div></div></details>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="9271-事务">9.27.1 事务<a href="#9271-事务" class="hash-link" aria-label="Direct link to 9.27.1 事务" title="Direct link to 9.27.1 事务">​</a></h2>
<p>事务指作为单个逻辑工作单元执行的一系列操作，要么<strong>完全地执行，要么完全地不执行</strong>。</p>
<p>简单的说，事务就是并发控制的单位，是用户定义的一个操作序列。 而一个逻辑工作单元要成为事务，就必须满足 <code>ACID</code> 属性。</p>
<ul>
<li><code>A</code>：原子性（Atomicity）：事务中的操作要么都不做，要么就全做</li>
<li><code>C</code>：一致性（Consistency）：事务执行的结果必须是从数据库从一个一致性状态转换到另一个一致性状态</li>
<li><code>I</code>：隔离性（Isolation）：一个事务的执行不能被其他事务干扰</li>
<li><code>D</code>：持久性（Durability）：一个事务一旦提交，它对数据库中数据的改变就应该是永久性的</li>
</ul>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="9272-工作单元">9.27.2 工作单元<a href="#9272-工作单元" class="hash-link" aria-label="Direct link to 9.27.2 工作单元" title="Direct link to 9.27.2 工作单元">​</a></h2>
<p>简单来说，就是为了保证一次完整的功能操作所产生的一系列提交数据的完整性，起着事务的作用。在计算机领域中，工作单元通常用 <code>UnitOfWork</code> 名称表示。</p>
<p>通常我们保证用户的每一次请求都是处于在一个功能单元中，也就是工作单元。</p>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="9273-如何使用">9.27.3 如何使用<a href="#9273-如何使用" class="hash-link" aria-label="Direct link to 9.27.3 如何使用" title="Direct link to 9.27.3 如何使用">​</a></h2>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="92731-unitofwork-自动管理">9.27.3.1 <code>[UnitOfWork]</code> 自动管理<a href="#92731-unitofwork-自动管理" class="hash-link" aria-label="Direct link to 92731-unitofwork-自动管理" title="Direct link to 92731-unitofwork-自动管理">​</a></h3>
<p>在 <code>Furion</code> 框架中，我们只需要在控制器 Action 中贴 <code>[UnitOfWork]</code> 特性即可开启工作单元模式，保证了每一次请求都是一个 <code>工作单元</code>，要么同时成功，要么同时失败。</p>
<ul>
<li><strong>单库操作</strong></li>
</ul>
<p>下面方式支持所有关系型数据库类型</p>
<div class="language-cs codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-cs codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv codeBlockLinesWithNumbering_o6Pm"><span class="token-line theme-code-block-highlighted-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token attribute class-name" style="color:rgb(255, 203, 107)">UnitOfWork</span><span class="token punctuation" style="color:rgb(199, 146, 234)">]</span><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// 由于出现错误，所以所有数据库变更都会自动回滚</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token keyword" style="font-style:italic">public</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">async</span><span class="token plain"> Task 测试环境事务</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token class-name keyword" style="color:rgb(255, 203, 107);font-style:italic">int</span><span class="token plain"> id</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// 各种奇葩数据库操作</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> </span><span class="token keyword" style="font-style:italic">await</span><span class="token plain"> _personRepository</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">DeleteNowAsync</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">id</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain" style="display:inline-block"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// 其他数据库操作。。</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain" style="display:inline-block"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> </span><span class="token comme
<ul>
<li><strong>多库操作</strong></li>
</ul>
<p>支持各种奇葩的 <code>ORM</code>，包括 <code>ADO.NET</code>，<code>EFCore</code> 等第三方，<strong>支持所有关系型数据库类型但不支持 <code>Sqlite</code></strong></p>
<div class="language-cs codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-cs codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv codeBlockLinesWithNumbering_o6Pm"><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token punctuation" style="color:rgb(199, 146, 234)">[</span><span class="token attribute class-name" style="color:rgb(255, 203, 107)">UnitOfWork</span><span class="token attribute attribute-arguments punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token attribute attribute-arguments">UseAmbientTransaction </span><span class="token attribute attribute-arguments operator" style="color:rgb(137, 221, 255)">=</span><span class="token attribute attribute-arguments"> </span><span class="token attribute attribute-arguments boolean" style="color:rgb(255, 88, 116)">true</span><span class="token attribute attribute-arguments punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">]</span><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// 由于出现错误，所以所有数据库变更都会自动回滚</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token keyword" style="font-style:italic">public</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">async</span><span class="token plain"> Task 测试环境事务</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token class-name keyword" style="color:rgb(255, 203, 107);font-style:italic">int</span><span class="token plain"> id</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// 各种奇葩数据库操作</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> </span><span class="token keyword" style="font-style:italic">await</span><span class="token plain"> _personRepository</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">DeleteNowAsync</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token plain">id</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain" style="display:inline-block"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> </span><span class="token comment" style="color:rgb(105, 112, 152);font-style:i
<ul>
<li><code>UnitOfWork</code> 内置配置：<!-- -->
<ul>
<li><code>UseAmbientTransaction</code>：是否开启分布式环境事务，<code>bool</code> 类型，默认 <code>false</code>，<strong>不支持 <code>Sqlite</code></strong></li>
<li><code>TransactionScope</code>：配置分布式环境事务范围，<code>TransactionScopeOption</code> 类型，当 <code>UseAmbientTransaction</code> 为 <code>true</code> 有效</li>
<li><code>TransactionIsolationLevel</code>：配置分布式环境事务隔离级别，<code>IsolationLevel</code> 类型，当 <code>UseAmbientTransaction</code> 为 <code>true</code> 有效</li>
<li><code>TransactionTimeout</code>：配置分布式环境事务执行超时时间，<code>int</code> 类型，当 <code>UseAmbientTransaction</code> 为 <code>true</code> 有效</li>
<li><code>TransactionScopeAsyncFlow</code>：配置分布式环境事务异步流支持，<code>TransactionScopeAsyncFlowOption</code> 类型，当 <code>UseAmbientTransaction</code> 为 <code>true</code> 有效</li>
<li><code>EnsureTransaction</code>：强制使字符串 <code>sql</code> 拓展事务有效，<code>bool</code> 类型，默认 <code>false</code></li>
</ul>
</li>
</ul>
<div class="theme-admonition theme-admonition-important admonition_xJq3 alert alert--info"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M7 2.3c3.14 0 5.7 2.56 5.7 5.7s-2.56 5.7-5.7 5.7A5.71 5.71 0 0 1 1.3 8c0-3.14 2.56-5.7 5.7-5.7zM7 1C3.14 1 0 4.14 0 8s3.14 7 7 7 7-3.14 7-7-3.14-7-7-7zm1 3H6v5h2V4zm0 6H6v2h2v-2z"></path></svg></span>版本说明</div><div class="admonitionContent_BuS1"><p>以下内容仅限 <code>Furion 3.7.3 +</code> 版本使用。</p></div></div>
<p>如使用非 <code>EFCore</code> ORM 框架，可实现 <code>IUnitOfWork</code> 接口之后调用 <code>services.AddUnitOfWork&lt;TUnitOfWork&gt;()</code> 注册即可，如示例代码：</p>
<div class="language-cs codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-cs codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv codeBlockLinesWithNumbering_o6Pm"><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token keyword" style="font-style:italic">using</span><span class="token plain"> </span><span class="token namespace" style="color:rgb(178, 204, 214)">Microsoft</span><span class="token namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token namespace" style="color:rgb(178, 204, 214)">AspNetCore</span><span class="token namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token namespace" style="color:rgb(178, 204, 214)">Mvc</span><span class="token namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token namespace" style="color:rgb(178, 204, 214)">Filters</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain" style="display:inline-block"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token keyword" style="font-style:italic">namespace</span><span class="token plain"> </span><span class="token namespace" style="color:rgb(178, 204, 214)">Furion</span><span class="token namespace punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token namespace" style="color:rgb(178, 204, 214)">DatabaseAccessor</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain" style="display:inline-block"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">/// &lt;summary&gt;</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">/// SqlSugar 工作单元实现</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">/// &lt;/summary&gt;</span><span class="token plain"></span></span><br></span><span class="token-line theme-code-block-highlighted-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token keyword" style="font-style:italic">public</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">sealed</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">class</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(255, 203, 107)">SqlSugarUnitOfWork</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">:</span><span class="token plain"> </span><span class="to
<p>之后注册即可：</p>
<div class="language-cs codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-cs codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv codeBlockLinesWithNumbering_o6Pm"><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain">services</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token generic-method function" style="color:rgb(130, 170, 255)">AddUnitOfWork</span><span class="token generic-method generic class-name punctuation" style="color:rgb(199, 146, 234)">&lt;</span><span class="token generic-method generic class-name" style="color:rgb(255, 203, 107)">SqlSugarUnitOfWork</span><span class="token generic-method generic class-name punctuation" style="color:rgb(199, 146, 234)">&gt;</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span></span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<div class="theme-admonition theme-admonition-tip admonition_xJq3 alert alert--success"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>小知识-如何判断是否开启了分布式环境事务</div><div class="admonitionContent_BuS1"><p>有时候我们自定义了工作单元之后，个别 <code>ORM</code> 不支持分布式环境事务，那么就会出现执行错误，我们可以通过 <code>System.Transactions.Transaction.Current != null</code> 来判断是否启用了分布式环境事务，不等于 <code>null</code> 则为启用，否则未启用。</p></div></div>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="92732-ensuretransaction-方法-">9.27.3.2 <code>EnsureTransaction()</code> 方法 ✨<a href="#92732-ensuretransaction-方法-" class="hash-link" aria-label="Direct link to 92732-ensuretransaction-方法-" title="Direct link to 92732-ensuretransaction-方法-">​</a></h3>
<p>有些时候我们通过静态类或者其他方式不小心创建了新的 <code>DbContext</code> 实例，这时候贴了 <code>[UnitOfWork]</code> 也不见起效，这时候可以通过以下方法来确认事务是否有效：</p>
<div class="language-cs codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-cs codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv codeBlockLinesWithNumbering_o6Pm"><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain">repository</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">EnsureTransaction</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span></span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<p><strong>如果不喜欢手动方式也可以通过 <code>[UnitOfWork(true)]</code> 开启此功能。</strong></p>
<p>该方法会将当前仓储添加到数据库上下文池中，并确保事务可用。</p>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="92732-手动管理">9.27.3.2 手动管理<a href="#92732-手动管理" class="hash-link" aria-label="Direct link to 9.27.3.2 手动管理" title="Direct link to 9.27.3.2 手动管理">​</a></h3>
<div class="tabs-container tabList__CuJ"><ul role="tablist" aria-orientation="horizontal" class="tabs"><li role="tab" tabindex="0" aria-selected="true" class="tabs__item tabItem_LNqP tabs__item--active">示例一</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">示例二</li><li role="tab" tabindex="-1" aria-selected="false" class="tabs__item tabItem_LNqP">示例三（分布式）</li></ul><div class="margin-top--md"><div role="tabpanel" class="tabItem_Ymn6"><div class="language-cs codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-cs codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv codeBlockLinesWithNumbering_o6Pm"><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// 开启事务</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token keyword" style="font-style:italic">using</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token class-name keyword" style="color:rgb(255, 203, 107);font-style:italic">var</span><span class="token plain"> transaction </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> _testRepository</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token plain">Database</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">BeginTransaction</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> </span><span class="token keyword" style="font-style:italic">try</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain"> _testRepository</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token function" style="color:rgb(130, 170, 255)">Insert</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token keyword" style="font-style:italic">new</span><span class="token plain"> </span><span class="token constructor-invocation class-name" style="color:rgb(255, 203, 107)">Blog</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> Url </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token string" style="color:rgb(195, 232, 141)
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="92733-enableretryonfailure-错误处理">9.27.3.3 <code>EnableRetryOnFailure</code> 错误处理<a href="#92733-enableretryonfailure-错误处理" class="hash-link" aria-label="Direct link to 92733-enableretryonfailure-错误处理" title="Direct link to 92733-enableretryonfailure-错误处理">​</a></h3>
<div class="theme-admonition theme-admonition-caution admonition_xJq3 alert alert--warning"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 16 16"><path fill-rule="evenodd" d="M8.893 1.5c-.183-.31-.52-.5-.887-.5s-.703.19-.886.5L.138 13.499a.98.98 0 0 0 0 1.001c.193.31.53.501.886.501h13.964c.367 0 .704-.19.877-.5a1.03 1.03 0 0 0 .01-1.002L8.893 1.5zm.133 11.497H6.987v-2.003h2.039v2.003zm0-3.004H6.987V5.987h2.039v4.006z"></path></svg></span>特别注意</div><div class="admonitionContent_BuS1"><p>如果使用的是 <code>EFCore</code> 数据库且启用了 <code>EnableRetryOnFailure()</code> 功能，那么 <code>[UnitOfWork]</code> 将抛出以下错误：</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv codeBlockLinesWithNumbering_o6Pm"><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain">InvalidOperationException: The configured execution strategy &#x27;SqlServerRetryingExecutionStrategy&#x27; does not support user-initiated transactions.</span></span><br></span><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token plain">Use the execution strategy returned by &#x27;DbContext.Database.CreateExecutionStrategy()&#x27; to execute all the operations in the transaction as a retriable unit.</span></span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>这时候需手动事务，并创建执行策略：<code>CreateExecutionStrategy</code>，详情请参考官方说明：<a href="https://learn.microsoft.com/zh-cn/ef/core/miscellaneous/connection-resiliency" target="_blank" rel="noopener noreferrer">https://learn.microsoft.com/zh-cn/ef/core/miscellaneous/connection-resiliency</a></p><div class="language-cs codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#bfc7d5;--prism-background-color:#292d3e"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-cs codeBlock_bY9V thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_e6Vv codeBlockLinesWithNumbering_o6Pm"><span class="token-line codeLine_lJS_" style="color:#bfc7d5"><span class="codeLineNumber_Tfdd"></span><span class="codeLineContent_feaV"><span class="token keyword" style="font-style:italic">using</span><span class="token plain"> </span><span class="token class-name keyword" style="color:rgb(255, 203, 107);font-style:italic">var</span><span class="token plain"> db </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">new</span><span class="token plain"> </span><span class="token constructor-invocation class-name" style="color:rgb(255, 203, 107)">BloggingContext</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></span><br></span><span class="token-line theme-code-block-highlighted-line codeLine_lJS_" style="color
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="9274-工作单元特性说明">9.27.4 工作单元特性说明<a href="#9274-工作单元特性说明" class="hash-link" aria-label="Direct link to 9.27.4 工作单元特性说明" title="Direct link to 9.27.4 工作单元特性说明">​</a></h2>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="92741-unitofwork-特性">9.27.4.1 <code>[UnitOfWork]</code> 特性<a href="#92741-unitofwork-特性" class="hash-link" aria-label="Direct link to 92741-unitofwork-特性" title="Direct link to 92741-unitofwork-特性">​</a></h3>
<p><code>[UnitOfWork]</code> 特性只能用于控制器的 <code>Action</code> 中，一旦贴了 <code>[UnitOfWork]</code> 特性后，那么该请求自动启用工作单元模式，要么成功，要么失败。</p>
<h3 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="92742-manualcommit-特性">9.27.4.2 <code>[ManualCommit]</code> 特性<a href="#92742-manualcommit-特性" class="hash-link" aria-label="Direct link to 92742-manualcommit-特性" title="Direct link to 92742-manualcommit-特性">​</a></h3>
<p>默认情况下，<code>Furion</code> 框架会在一次成功请求之后自动调用 <code>SaveChanges()</code> 方法，如果选择手动调用 <code>SaveChanges()</code> 方法，可以在控制器 <code>Action</code> 中贴 <code>[ManualCommit]</code> 特性即可。</p>
<h2 class="anchor anchorWithHideOnScrollNavbar_WYt5" id="9275-反馈与建议">9.27.5 反馈与建议<a href="#9275-反馈与建议" class="hash-link" aria-label="Direct link to 9.27.5 反馈与建议" title="Direct link to 9.27.5 反馈与建议">​</a></h2>
<div class="theme-admonition theme-admonition-note admonition_xJq3 alert alert--secondary"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 14 16"><path fill-rule="evenodd" d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"></path></svg></span>与我们交流</div><div class="admonitionContent_BuS1"><p>给 Furion 提 <a href="https://gitee.com/dotnetchina/Furion/issues/new?issue" target="_blank" rel="noopener noreferrer">Issue</a>。</p></div></div>
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