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)
MMM金融互助系统源码是以thinkphp为核心进行开发的3m金融互助平台。程序安装说明：1.恢复数据：将“数据备份”文件夹中的 urkeji.sql 文件请采用phpMyAdmin进行导入； 2.配置Sql数据库信息，文件路径：根目录下 config.php3.后台管理地址：http://域名/admin.php 用户名：100000 密码：admin1
0
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><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></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><span class="tag-name">Resource</span><span> </span><span class="attribute">name</span><span>=</span><span class="attribute-value">"jdbc/DBConnection"</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><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></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>factory</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>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></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><span class="tag-name">parameter</span><span class="tag">></span><span> </span></li><li class="alt"><span> </span><span class="tag"><</span><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></li><li><span> </span><span class="tag"><</span><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></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">parameter</span><span class="tag">></span><span> </span></li><li class="alt"><span> </span><span class="tag"><</span><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></li><li><span> </span><span class="tag"><</span><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></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><span class="tag-name">parameter</span><span class="tag">></span><span> </span></li><li><span> </span><span class="tag"><</span><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></li><li class="alt"><span> </span><span class="tag"><</span><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></li><li><span class="tag"></</span><span class="tag-name">parameter</span><span class="tag">></span><span> </span></li><li class="alt"><span><!-- The JDBC connection url for connecting to your </span>MySQL<span>(和PHP搭配之最佳组合) dB. </span></li><li><span> The </span><span class="attribute">autoReconnect</span><span>=</span><span class="attribute-value">true</span><span> argument to the url makes sure that the </span></li><li class="alt"><span> mm.</span>MySQL<span>(和PHP搭配之最佳组合) JDBC Driver will automatically reconnect if </span>MySQL<span>(和PHP搭配之最佳组合)d closed the </span></li><li><span> connection.</span>MySQL<span>(和PHP搭配之最佳组合)d by default closes idle connections after 8 hours. </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>url</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>jdbc:</span>MySQL<span>(和PHP搭配之最佳组合)://localhost:3306/forumdb?</span><span class="attribute">autoReconnect</span><span>=</span><span class="attribute-value">true</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 class="tag"></</span><span class="tag-name">ResourceParams</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"></</span><span class="tag-name">Context</span><span class="tag">></span><span> </span></li></ol>
再次提醒：一定要放在之前！
四、配置web.xml(标准化越来越近了)
web.xml(标准化越来越近了)位于d:mywebmyappsWEB-INF下，也即是你的WEB里的web.xml(标准化越来越近了)。
同样用文本编辑器打开web.xml(标准化越来越近了)，然后加入如下语句（在与之间）
<ol class="dp-xml"><li class="alt"><span><span class="tag"><</span><span class="tag-name">resource-ref</span><span class="tag">></span><span> </span></span></li><li><span class="tag"><</span><span class="tag-name">description</span><span class="tag">></span><span>DB Connection</span><span class="tag"></</span><span class="tag-name">description</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span class="tag-name">res-ref-name</span><span class="tag">></span><span>jdbc/DBConnection</span><span class="tag"></</span><span class="tag-name">res-ref-name</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span class="tag-name">res-type</span><span class="tag">></span><span>javax.sql.DataSource</span><span class="tag"></</span><span class="tag-name">res-type</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span class="tag-name">res-auth</span><span class="tag">></span><span>Container</span><span class="tag"></</span><span class="tag-name">res-auth</span><span class="tag">></span><span> </span></li><li><span class="tag"></</span><span class="tag-name">resource-ref</span><span class="tag">></span><span> </span></li></ol>
五、编写测试jsp(SUN企业级应用的首选) page。
在d:mywebmyapps下编写一个dbtest.jsp(SUN企业级应用的首选)，代码如下：
<ol class="dp-xml"><li class="alt"><span><span class="tag"><</span><span>%@ page </span><span class="attribute">import</span><span>=</span><span class="attribute-value">"java.io.*,java.util.*,java.sql.*,javax.sql.*,javax.naming.*"</span><span>%</span><span class="tag">></span><span> </span></span></li><li><span class="tag"><</span><span>%@ page </span><span class="attribute">contentType</span><span>=</span><span class="attribute-value">"text/html;charset=GB2312"</span><span>%</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span class="tag-name">html</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span class="tag-name">head</span><span class="tag">></span><span class="tag"><</span><span class="tag-name">title</span><span class="tag">></span><span>DataSourse Connection Test</span><span class="tag"></</span><span class="tag-name">title</span><span class="tag">></span><span class="tag"></</span><span class="tag-name">head</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"><</span><span class="tag-name">body</span><span class="tag">></span><span> </span></li><li><span class="tag"><</span><span>% </span></li><li class="alt"><span>try{ </span></li><li><span>java.sql.Connection con; </span></li><li class="alt"><span>Statement stmt; </span></li><li><span>ResultSet rs; </span></li><li class="alt"><span>Context </span><span class="attribute">ctx</span><span> = </span><span class="attribute-value">new</span><span> InitialContext(); </span></li><li><span>DataSource </span><span class="attribute">ds</span><span>=(DataSource)ctx.lookup("java:comp/env/jdbc/DBConnection"); </span></li><li class="alt"><span class="attribute">con</span><span>=</span><span class="attribute-value">ds</span><span>.getConnection(); </span></li><li><span class="attribute">stmt</span><span>=</span><span class="attribute-value">con</span><span>.createStatement(); </span></li><li class="alt"><span class="attribute">rs</span><span>=</span><span class="attribute-value">stmt</span><span>.executeQuery("select * from member"); </span></li><li><span>while(rs.next()){ </span></li><li class="alt"><span>out.print(rs.getInt(1); </span></li><li><span>out.print(rs.getString(2)); </span></li><li class="alt"><span>} </span></li><li><span>rs.close(); </span></li><li class="alt"><span>stmt.close(); </span></li><li><span>con.close(); </span></li><li class="alt"><span>}catch(Exception e){ </span></li><li><span>out.print(e.getMessage()); </span></li><li class="alt"><span>} </span></li><li><span>%</span><span class="tag">></span><span> </span></li><li class="alt"><span class="tag"></</span><span class="tag-name">body</span><span class="tag">></span><span> </span></li><li><span class="tag"></</span><span class="tag-name">html</span><span class="tag">></span><span> </span></li></ol>六、开始测试
运行tomcat(一个很好用的JSP运行平台).bat,打开IE在地址栏中输入：http://localhost:8080/myapps/dbtest.jsp(SUN企业级应用的首选)
如果能够看到看到如下数据，说明配置MySQL数据源成功。
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