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<!doctype html>
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<p class="site-subtitle">吾生也有涯,而知也无涯。以有涯随无涯,殆已!</p>
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<span class="post-meta-item-text">发表于</span>
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<h3 id="git版本回退"><a href="#git版本回退" class="headerlink" title="git版本回退"></a>git版本回退</h3><p><code>git reset --hard <common-id></code></p>
<h3 id="git修改commit-message"><a href="#git修改commit-message" class="headerlink" title="git修改commit-message"></a>git修改commit-message</h3><p><code>git commit --amend -m "New commit message</code></p>
<blockquote>
<p>本地修改commit-message, 可用强制版本提交到远程</p>
</blockquote>
<h3 id="git本地分支强制覆盖远程分支"><a href="#git本地分支强制覆盖远程分支" class="headerlink" title="git本地分支强制覆盖远程分支"></a>git本地分支强制覆盖远程分支</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div></pre></td><td class="code"><pre><div class="line">git push -f <remote> <branch></div><div class="line">git push <remote> <branch> -f</div><div class="line">git push <remote> <branch> --force</div></pre></td></tr></table></figure>
<h3 id="git-stash-使用"><a href="#git-stash-使用" class="headerlink" title="git stash 使用"></a>git stash 使用</h3><h4 id="暂存stash"><a href="#暂存stash" class="headerlink" title="暂存stash"></a>暂存stash</h4><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">git stash</div><div class="line">git stash save <message> // 推荐使用</div></pre></td></tr></table></figure>
<blockquote>
<p>将当前修改暂存到stash中, message可用去记录版本</p>
</blockquote>
<h4 id="查看所有stash"><a href="#查看所有stash" class="headerlink" title="查看所有stash"></a>查看所有stash</h4><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">git stash list</div></pre></td></tr></table></figure>
<h4 id="提取stash"><a href="#提取stash" class="headerlink" title="提取stash"></a>提取stash</h4><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">git stash pop</div><div class="line">git stash apply stash@{index} // 不删除原记录</div></pre></td></tr></table></figure>
<blockquote>
<p><code>git stash pop</code>将获取暂存中的第一条记录</p>
<p><code>git stash apply stash@{index}</code>获取暂存中对应索引的暂存记录</p>
</blockquote>
<h4 id="移除stash"><a href="#移除stash" class="headerlink" title="移除stash"></a>移除stash</h4><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">git stash drop stash@{index}</div><div class="line">git stash clear</div></pre></td></tr></table></figure>
<blockquote>
<p><code>git stash drop stash@{index}</code>删除指定索引的记录</p>
<p><code>git stash clear</code> 删除所有<code>stash</code>记录</p>
</blockquote>
<h4 id="查看对应stash修改信息"><a href="#查看对应stash修改信息" class="headerlink" title="查看对应stash修改信息"></a>查看对应stash修改信息</h4><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div></pre></td><td class="code"><pre><div class="line">git stash show</div><div class="line">git stash show -p || --patch</div><div class="line">git satsh show stash@{index} -p || --patch</div></pre></td></tr></table></figure>
<blockquote>
<p><code>git stash show</code> 查看最近一条记录的暂存文件</p>
<p><code>git stash show -p</code> 查看最近一条记录的暂存文件的修改内容</p>
<p><code>git stash show stash@{index} -p</code> 查看指定记录的暂存文件的修改内容</p>
</blockquote>
<h4 id="从stash检出分支"><a href="#从stash检出分支" class="headerlink" title="从stash检出分支"></a>从stash检出分支</h4><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">git stash branch <branch-name></div><div class="line">git stash branch <branch-name> [<stash@{index}>]</div></pre></td></tr></table></figure>
<blockquote>
<p><code>git stash branch <branch-name></code> 从当前暂存的记录下,检出新的分支,暂存记录将被删除</p>
<p><code>git stash branch <branch-name> [<stash@{index}>]</code> 从指定索引的暂存记录,检出新的分支,暂存记录将被删除</p>
</blockquote>
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<h1 class="post-title" itemprop="name headline">
<a class="post-title-link" href="/2018/02/02/database-opt-datas/" itemprop="url">mongodb和mysql数据导入和导出</a></h1>
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<span class="post-meta-item-text">发表于</span>
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2018-02-02
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<h3 id="环境"><a href="#环境" class="headerlink" title="环境"></a>环境</h3><p><code>bantu16.04</code></p>
<h3 id="Mongodb导入数据"><a href="#Mongodb导入数据" class="headerlink" title="Mongodb导入数据"></a>Mongodb导入数据</h3><h4 id="导入数据文件"><a href="#导入数据文件" class="headerlink" title="导入数据文件"></a>导入数据文件</h4><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line">mongoimport --db <db-name> --collection <collection-name> --file <file-path> --<file-type></div><div class="line"></div><div class="line">--db 数据库名称</div><div class="line">--collection 表/集合名称</div><div class="line">--file 文件路径</div><div class="line">--file-type 文件格式类型 jsonArray,</div></pre></td></tr></table></figure>
<h4 id="导入数据库"><a href="#导入数据库" class="headerlink" title="导入数据库"></a>导入数据库</h4><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div></pre></td><td class="code"><pre><div class="line">mongorestore -h <hostname><:port> -d <db-name> <path> | --dir </div><div class="line"></div><div class="line">-h <:post> 数据库地址</div><div class="line">-db, -d 数据库名称</div><div class="line">-drop 是否先删除原先的数据库</div><div class="line">-path 导入数据的地址</div><div class="line">-dir 导入数据的地址(和path不可通用)</div></pre></td></tr></table></figure>
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<h3 id="Iframe的兼容性"><a href="#Iframe的兼容性" class="headerlink" title="Iframe的兼容性"></a>Iframe的兼容性</h3><p>对于<code>Iframe</code>兼容性还是挺有好的,所有的浏览器都支持,当然包括IE.<br><img src="/2018/02/02/了解iframe/iframe-compatibility.png" alt="Iframe兼容性"></p>
<h3 id="获取页面的Iframe"><a href="#获取页面的Iframe" class="headerlink" title="获取页面的Iframe"></a>获取页面的Iframe</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">frames || window.frames 获取当前页面下的所有iframe</div></pre></td></tr></table></figure>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">frames[index] || window.frames[index] || window.frames[iframe_id] 获取当前页面下的某个iframe</div></pre></td></tr></table></figure>
<h3 id="父级页面获取Iframe的window"><a href="#父级页面获取Iframe的window" class="headerlink" title="父级页面获取Iframe的window"></a>父级页面获取Iframe的window</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">frames[index].frameElement.contentWindow 获取当前页面下的某个iframe的window</div></pre></td></tr></table></figure>
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<p>如果多个页面内嵌套多层的<code>iframe</code>的话,同上述获取路径一样.</p>
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<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">frames[index].frameElement.contentWindow.frames[sub_index].frameElemnet.contentWindow...</div></pre></td></tr></table></figure>
<h3 id="父级页面控制Iframe的滚动条"><a href="#父级页面控制Iframe的滚动条" class="headerlink" title="父级页面控制Iframe的滚动条"></a>父级页面控制Iframe的滚动条</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">frames[index].frameElement.contentWindow.scrollTo(x, y) // 控制iframe页面的滚动条的方法</div></pre></td></tr></table></figure>
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<h3 id="启动关闭MySQL服务"><a href="#启动关闭MySQL服务" class="headerlink" title="启动关闭MySQL服务"></a>启动关闭MySQL服务</h3><ol>
<li>【开始菜单】搜索 services.msc 打开 windows【服务管理器】，可以在此开启关闭 MySQL 服务。</li>
<li>在 cmd 中使用命令：</li>
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<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">net start mysql #启动服务</div><div class="line">net stop mysql #关闭服务</div></pre></td></tr></table></figure>
<h3 id="数据库操作命令"><a href="#数据库操作命令" class="headerlink" title="数据库操作命令"></a>数据库操作命令</h3><h4 id="进入数据库命令行"><a href="#进入数据库命令行" class="headerlink" title="进入数据库命令行"></a>进入数据库命令行</h4><p><code>CMD:mysql -u root -p;</code><br><code>CMD:mysql -u root -p password;</code><br></p>
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<h3 id="node-bcrypt-数据加密"><a href="#node-bcrypt-数据加密" class="headerlink" title="node-bcrypt 数据加密"></a>node-bcrypt 数据加密</h3><p>安装<code>&</code><a href="https://github.com/kelektiv/node.bcrypt.js" target="_blank" rel="external">Github地址</a></p>
<p><code>yarn add bcryptjs 或者 npm install bcryptjs</code></p>
<h4 id="api"><a href="#api" class="headerlink" title="api"></a>api</h4><ul>
<li><code>genSaltSync(rounds)</code></li>
<li><code>genSalt(rounds, cb)</code></li>
<li><code>hashSync(data, salt)</code></li>
<li><code>hash(data, salt, cb)</code></li>