以下的文章主要讲述的是如何在tomcat5中正确配置MySQL数据源，以下的文章我们主要是对tomcat5中正确配置MySQL数据源的实际操作步骤的详细介绍，以下就是文章的具体操作步骤描述。 一、配置MySQL环境变量： softe version:tomcat(一个很好用的JSP运行平台)5.0
以下的文章主要讲述的是如何在tomcat5中正确配置MySQL数据源，以下的文章我们主要是对tomcat5中正确配置MySQL数据源的实际操作步骤的详细介绍，以下就是文章的具体操作步骤描述。
一、配置MySQL环境变量：
softe version:tomcat(一个很好用的JSP运行平台)5.0.12/MySQL(和PHP搭配之最佳组合)4.1.7/MySQL(和PHP搭配之最佳组合)_driver---
MySQL(和PHP搭配之最佳组合)-connector-java-3.1.4-beta-bin.jar
MySQL(和PHP搭配之最佳组合)驱动程序可从www.MySQL(和PHP搭配之最佳组合).com官方网站下载
路径：
tomcat(一个很好用的JSP运行平台)5在d:mywebomcat5；
MySQL(和PHP搭配之最佳组合)在C:Program FilesMySQL(和PHP搭配之最佳组合)MySQL(和PHP搭配之最佳组合) Server 4.1
Path(在原来的基础上加上）：
<ol class="dp-xml"> <li class="alt"><span><span>d:mywebomcat5in;d:mywebjdk1.4;d:myweb </span></span></li> <li><span>jdk1.4in; </span></li> <li class="alt"><span>d:mywebomcat5commonlibservlet-api.jar;C:Program Files </span></li> <li>MySQL<span>(和PHP搭配之最佳组合)</span>MySQL<span>(和PHP搭配之最佳组合) Server4.1in </span> </li> <li class="alt"><span>CLASSPATH:d:mywebomcat5commonlibservlet-api.jar;d:myweb </span></li> <li><span>tomcat(一个很好用的JSP运行平台)5commonlibjsp(SUN企业级应用的首选)-api.jar </span></li> <li class="alt"><span>JAVA_HOME:d:mywebjdk1.4 </span></li> <li><span>CATALINA_HOME:d:mywebomcat5 </span></li> </ol>
二、建立测试数据库
在MySQL(和PHP搭配之最佳组合)中建立一个forumdb数据库，同时创建一个表member如下：
<ol class="dp-xml"> <li class="alt"><span><span>create database forumdb; </span></span></li> <li><span>create table member </span></li> <li class="alt"><span>( </span></li> <li><span>id int, </span></li> <li class="alt"><span>name varchar(6) </span></li> <li><span>); </span></li> </ol>
然后插入两条测试数据如下：
<ol class="dp-xml"> <li class="alt"><span><span>insert into member values(1,"zhang"); </span></span></li> <li><span>insert into member values(2,"wang"); </span></li> </ol>
至此，数据库准备完毕。
三、配置server.xml(标准化越来越近了)
注：我的web在d:mywebmyapps
首先要将MySQL(和PHP搭配之最佳组合)的驱动程序放到d:mywebomcat5commonlib下面，一定要放".jar"的文件，如是".zip"的文件直接改为.jar即可。
用文本编辑器打开D:omcat5confserver.xml(标准化越来越近了)，找到结束标志，然后在之前加上如下语句：
<ol class="dp-xml"> <li class="alt"><span><span class="tag"><span class="tag-name">Context</span><span> </span><span class="attribute">path</span><span>=</span><span class="attribute-value">"/myapps"</span><span> </span><span class="attribute">docBase</span><span>=</span><span class="attribute-value">"d:mywebmyapps"</span><span> </span><span class="attribute">debug</span><span>=</span><span class="attribute-value">"0"</span><span> </span></span></span></li> <li> <span class="attribute">reloadable</span><span>=</span><span class="attribute-value">"true"</span><span> </span><span class="tag">></span><span> </span> </li> <li class="alt"><span class="tag"><span class="tag-name">Resource</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"jdbc/DBConnection"</span><span> </span></span></li> <li> <span class="attribute">auth</span><span>=</span><span class="attribute-value">"Container"</span><span> </span> </li> <li class="alt"> <span class="attribute">type</span><span>=</span><span class="attribute-value">"javax.sql.DataSource"</span><span> </span><span class="tag">/></span><span> </span> </li> <li><span class="tag"><span class="tag-name">ResourceParams</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"jdbc/DBConnection"</span><span class="tag">></span><span> </span></span></li> <li class="alt"><span class="tag"><span class="tag-name">parameter</span><span class="tag">></span><span> </span></span></li> <li><span class="tag"><span class="tag-name">name</span><span class="tag">></span><span>factory</span><span class="tag"></span><span class="tag-name">name</span><span class="tag">></span><span> </span></span></li> <li class="alt"><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span>org.apache(Unix平台最流行的WEB服务器平台).commons.dbcp.BasicDataSourceFactory</span><span class="tag"></span><span class="tag-name">value</span><span class="tag">></span><span> </span></span></li> <li> <span class="tag"></span><span class="tag-name">parameter</span><span class="tag">></span><span> </span> </li> <li class="alt"> <span><!-- Maximum number of dB connections in pool. Make sure you </span></li><li><span> configure your </span>MySQL<span>(和PHP搭配之最佳组合)d max_connections large enough to handle </span></li><li class="alt"><span> all of your db connections. Set to 0 for no limit. </span></li><li><span> --</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span class="tag-name">parameter</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span class="tag-name">name</span><span class="tag">></span><span>maxActive</span><span class="tag"></</span><span class="tag-name">name</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>10</span><span class="tag"></</span><span class="tag-name">value</span><span class="tag">></span><span> </span></li><li><span class="tag"></</span><span class="tag-name">parameter</span><span class="tag">></span><span> </span></li><li class="alt"><span><!-- Maximum number of idle dB connections to retain in pool. </span></li><li><span> Set to 0 for no limit. </span></li><li class="alt"><span> --</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span class="tag-name">parameter</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span class="tag-name">name</span><span class="tag">></span><span>maxIdle</span><span class="tag"></</span><span class="tag-name">name</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>3</span><span class="tag"></</span><span class="tag-name">value</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"></</span><span class="tag-name">parameter</span><span class="tag">></span><span> </span></li><li><span><!-- Maximum time to wait for a dB connection to become available </span></li><li class="alt"><span> in ms, in this example 10 seconds. An Exception is thrown if </span></li><li><span> this timeout is exceeded.Set to -1 to wait indefinitely. </span></li><li class="alt"><span>Maximum time to wait for a dB connection to become available </span></li><li><span> in ms, in this example 10 seconds. An Exception is thrown if </span></li><li class="alt"><span> this timeout is exceeded.Set to -1 to wait indefinitely. </span></li><li><span> --</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span class="tag-name">parameter</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span class="tag-name">name</span><span class="tag">></span><span>maxWait</span><span class="tag"></</span><span class="tag-name">name</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span class="tag-name">value</span><span class="tag">></span><span>10000</span><span class="tag"></</span><span class="tag-name">value</span><span class="tag">></span><span> </span></li><li><span class="tag"></</span><span class="tag-name">parameter</span><span class="tag">></span><span> </span></li><li class="alt"><span class="comments"><!-- MySQL(和PHP搭配之最佳组合) dB username and password for dB connections--></span><span> </span> </li> <li><span class="tag"><span class="tag-name">parameter</span><span class="tag">></span><span> </span></span></li> <li class="alt"> <span> </span><span class="tag"><span class="tag-name">name</span><span class="tag">></span><span>username</span><span class="tag"></span><span class="tag-name">name</span><span class="tag">></span><span> </span></span> </li> <li> <span> </span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span>root</span><span class="tag"></span><span class="tag-name">value</span><span class="tag">></span><span> </span></span> </li> <li class="alt"> <span class="tag"></span><span class="tag-name">parameter</span><span class="tag">></span><span> </span> </li> <li><span class="tag"><span class="tag-name">parameter</span><span class="tag">></span><span> </span></span></li> <li class="alt"> <span> </span><span class="tag"><span class="tag-name">name</span><span class="tag">></span><span>password</span><span class="tag"></span><span class="tag-name">name</span><span class="tag">></span><span> </span></span> </li> <li> <span> </span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span>1234</span><span class="tag"></span><span class="tag-name">value</span><span class="tag">></span><span> </span></span> </li> <li class="alt"> <span class="tag"></span><span class="tag-name">parameter</span><span class="tag">></span><span> </span> </li> <li> <span class="comments"><!-- Class name for mm.MySQL(和PHP搭配之最佳组合) JDBC driver --></span><span> </span> </li> <li class="alt"><span class="tag"><span class="tag-name">parameter</span><span class="tag">></span><span> </span></span></li> <li> <span> </span><span class="tag"><span class="tag-name">name</span><span class="tag">></span><span>driverClassName</span><span class="tag"></span><span class="tag-name">name</span><span class="tag">></span><span> </span></span> </li> <li class="alt"> <span> </span><span class="tag"><span class="tag-name">value</span><span class="tag">></span><span>com.</span>MySQL<span>(和PHP搭配之最佳组合).jdbc.Driver</span><span class="tag"></span><span class="tag-name">value</span><span class="tag">></span><span> </span></span> </li> <li> <span class="tag"></span><span class="tag-name">parameter</span><span class="tag">></span><span> </span> </li> <li class="alt"><span></span></li> </ol>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
