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          <p>本文用到的软件版本以及相关环境：</p>
<blockquote>
<p>Eclipse Photon Release (4.8.0)<br>JDK-10.0.2<br>SQL Server 2012</p>
</blockquote>
<h1 id="1-配置-SQL-Server-2012"><a href="#1-配置-SQL-Server-2012" class="headerlink" title="1.配置 SQL Server 2012"></a><font color="#FF0000">1.配置 SQL Server 2012</font></h1><p>打开 SQL Server Management Studio，使用 <font color="#FF0000">SQL Server 身份验证</font> 登录：</p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/001.png" alt="001.png"></p>
<p>如果在安装 SQL Server 2012 时选用了Windows身份验证登录方式，则需要重新设置，设置方法参考：<a href="https://blog.csdn.net/qq_36759224/article/details/90204243" target="_blank" rel="noopener">《SQL Server 登录更换【Windows身份验证】为【SQL Server 身份验证】》</a></p>
<p>登录成功后，打开 SQL Server 配置管理器：</p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/002.png" alt="002.png"></p>
<p>在左边找到 SQL Server 网络配置，点击【你的数据库名】的协议，将右边栏的 <font color="#FF0000">Shared Memory、Named Pipes、TCP/IP</font> 全部右键选择<font color="#FF0000">启用</font>：</p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/003.png" alt="003.png"><br><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/004.png" alt="004.png"></p>
<p>双击 <font color="#FF0000">TCP/IP</font>（或者右键选择属性），选择【<font color="#FF0000">IP地址</font>】，将【<font color="#FF0000">IP1</font>】和【<font color="#FF0000">IP10</font>】的【<font color="#FF0000">IP地址</font>】设为 <font color="#FF0000">127.0.0.1</font></p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/005.png" alt="005.png"></p>
<p>将所有【<font color="#FF0000">IPx</font>】（<font color="#FF0000">IP1、IP10、IP11、IP12</font>等）的【<font color="#FF0000">已启用</font>】设为<font color="#FF0000">是</font></p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/006.png" alt="006.png"></p>
<p>下拉到窗口底部，将 【<font color="#FF0000">IPAll</font>】 中的【<font color="#FF0000">TCP端口</font>】设成 <font color="#FF0000">1433</font>，其余不变</p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/007.png" alt="007.png"></p>
<h1 id="2-开启-Telnet-服务"><a href="#2-开启-Telnet-服务" class="headerlink" title="2.开启 Telnet 服务"></a><font color="#FF0000">2.开启 Telnet 服务</font></h1><p>打开【<font color="#FF0000">控制面板</font>】，选择【<font color="#FF0000">程序</font>】，点击【<font color="#FF0000">启用或关闭 Windows 功能</font>】，找到【<font color="#FF0000">Telnet Client</font>】勾选并保存，Windows 7 或者以下的版本则勾选【<font color="#FF0000">Telnet 服务器</font>】和【<font color="#FF0000">Telnet 客户端</font>】</p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/008.png" alt="008.png"><br><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/009.png" alt="009.png"></p>
<h1 id="3-测试1433端口是否打开"><a href="#3-测试1433端口是否打开" class="headerlink" title="3.测试1433端口是否打开"></a><font color="#FF0000">3.测试1433端口是否打开</font></h1><p> 运行cmd，输入 telnet 127.0.0.1 1433，若提示连接失败，则说明1433端口没有打开，需要重新进行以上配置，若连接成功，则显示如下：</p>
<p> <img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/010.png" alt="010.png"></p>
<h1 id="4-下载JDBC"><a href="#4-下载JDBC" class="headerlink" title="4.下载JDBC"></a><font color="#FF0000">4.下载JDBC</font></h1><p> <a href="https://docs.microsoft.com/zh-cn/sql/connect/jdbc/download-microsoft-jdbc-driver-for-sql-server?view=sql-server-2017" target="_blank" rel="noopener">点击此处</a>下载各个版本JDBC，不同版本的JDBC驱动程序适用的JAR不同，与不同版本的SQL兼容性也不同，具体参考<a href="https://docs.microsoft.com/zh-cn/sql/connect/jdbc/microsoft-jdbc-driver-for-sql-server-support-matrix?view=sql-server-2017" target="_blank" rel="noopener">《Microsoft SQL Server JDBC 驱动程序支持矩阵》</a>，比如使用 SQL Server 2012 我们可以下载6.0的版本，下载<font color="#FF0000">sqljdbc_6.0.8112.200_chs.tar.gz</font>文件，解压后可以找到<font color="#FF0000">sqljdbc41.jar</font>与<font color="#FF0000">sqljdbc42.jar</font>文件，使用时要注意自己JDK是哪个版本的，1.80以上的则对应 <font color="#FF0000">sqljdbc42.jar</font> 类库</p>
<h1 id="5-Eclipse-连接-SQL-Server"><a href="#5-Eclipse-连接-SQL-Server" class="headerlink" title="5.Eclipse 连接 SQL Server"></a><font color="#FF0000">5.Eclipse 连接 SQL Server</font></h1><p>将 sqljdbc41.jar 或者 sqljdbc42.jar 放到一个文件夹下，打开 Eclipse，在需要连接数据库的项目里，右键【<font color="#FF0000">src</font>】，选择【<font color="#FF0000">Build Path</font>】、【<font color="#FF0000">Configure Build Path…</font>】，在弹出的窗口选择【<font color="#FF0000">Libraries</font>】，选择【<font color="#FF0000">Modulepath</font>】，单击【<font color="#FF0000">Add External JARs…</font>】，找到下载的 sqljdbc41.jar 或者 sqljdbc42.jar 文件并打开，然后【<font color="#FF0000">Apply and Close</font>】保存</p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/011.png" alt="011.png"><br><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/012.png" alt="012.png"><br><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/013.png" alt="013.png"></p>
<h1 id="6-测试连接"><a href="#6-测试连接" class="headerlink" title="6.测试连接"></a><font color="#FF0000">6.测试连接</font></h1><p>打开 SQL Server 2012，在其中新建数据库 test</p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/014.png" alt="014.png"></p>
<p>Eclipse中，在项目下新建一个package，再新建一个class，用于测试数据库的连接：<br><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></pre></td><td class="code"><pre><span class="line"><span class="keyword">package</span> test;</span><br><span class="line"><span class="keyword">import</span> java.sql.*;</span><br><span class="line"><span class="keyword">public</span> <span class="class"><span class="keyword">class</span> <span class="title">Main</span> </span>&#123;</span><br><span class="line">	<span class="function"><span class="keyword">public</span> <span class="keyword">static</span> <span class="keyword">void</span> <span class="title">main</span><span class="params">(String [] args)</span></span></span><br><span class="line"><span class="function">	</span>&#123;</span><br><span class="line">		String driverName=<span class="string">"com.microsoft.sqlserver.jdbc.SQLServerDriver"</span>;</span><br><span class="line">		String dbURL=<span class="string">"jdbc:sqlserver://localhost:1433;DatabaseName=test"</span>;  <span class="comment">//要连接的数据库名</span></span><br><span class="line">		String userName=<span class="string">"sa"</span>;  <span class="comment">//数据库用户名</span></span><br><span class="line">		String userPwd=<span class="string">"000000"</span>;  <span class="comment">//数据库密码</span></span><br><span class="line">		<span class="keyword">try</span></span><br><span class="line">		&#123;</span><br><span class="line">			Class.forName(driverName);</span><br><span class="line">			Connection dbConn=DriverManager.getConnection(dbURL,userName,userPwd);</span><br><span class="line">			System.out.println(<span class="string">"连接数据库成功"</span>);</span><br><span class="line">			&#125;</span><br><span class="line">		<span class="keyword">catch</span>(Exception e)</span><br><span class="line">		&#123;</span><br><span class="line">			e.printStackTrace();</span><br><span class="line">			System.out.print(<span class="string">"连接失败"</span>);</span><br><span class="line">			&#125;</span><br><span class="line">		&#125;</span><br><span class="line">	&#125;</span><br></pre></td></tr></table></figure></p>
<p>如果以上所有操作正确，就能成功连接数据库了：</p>
<p><img src="https://cdn.jsdelivr.net/gh/TRHX/ImageHosting/ITRHX-PIC/A22/015.png" alt="015.png"></p>

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