说明.txt

sql server 2000 连接池成功之例 Mysql 连接池成功之例 详细的配置： server.xml web.xml

1)
  修改如下文件：
D:\Tomcat5\conf\server.xml  
D:\Tomcat5\conf\web.xml


即在server.xml：</host> 之前加入以下内容：

<!-- configure DataSource. Add the following code into server.xml -->

<Context path="/DBTest" docBase="DBTest" debug="0"
reloadable="true" >


  <Resource name="jdbc/BookDB"
               auth="Container"
               type="javax.sql.DataSource" />

  <ResourceParams name="jdbc/BookDB">
    <parameter>
      <name>factory</name>
      <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
    </parameter>

    <!-- Maximum number of dB connections in pool. Make sure you
         configure your mysqld max_connections large enough to handle
         all of your db connections. Set to 0 for no limit.
         -->
    <parameter>
      <name>maxActive</name>
      <value>100</value>
    </parameter>

    <!-- Maximum number of idle dB connections to retain in pool.
         Set to 0 for no limit.
         -->
    <parameter>
      <name>maxIdle</name>
      <value>30</value>
    </parameter>

    <!-- Maximum time to wait for a dB connection to become available
         in ms, in this example 10 seconds. An Exception is thrown if
         this timeout is exceeded.  Set to -1 to wait indefinitely.
        Maximum time to wait for a dB connection to become available
         in ms, in this example 10 seconds. An Exception is thrown if
         this timeout is exceeded.  Set to -1 to wait indefinitely.
         -->
    <parameter>
      <name>maxWait</name>
      <value>10000</value>
    </parameter>

    <!-- MySQL dB username and password for dB connections  -->
    <parameter>
     <name>username</name>
     <value>root</value>
    </parameter>
    <parameter>
     <name>password</name>
     <value>123</value>
    </parameter>

    <!-- Class name for mm.mysql JDBC driver -->
    <parameter>
       <name>driverClassName</name>
       <value>com.mysql.jdbc.Driver</value>
    </parameter>

    <!-- The JDBC connection url for connecting to your MySQL dB.
         The autoReconnect=true argument to the url makes sure that the
         mm.mysql JDBC Driver will automatically reconnect if mysqld closed the
         connection.  mysqld by default closes idle connections after 8 hours.
         -->
    <parameter>
      <name>url</name>
      <value>jdbc:mysql://localhost:3306/mydb?autoReconnect=true</value>
    </parameter>
  </ResourceParams>

</Context>


2)
  修改如下文件：
D:\Tomcat5\conf\web.xml

即在web.xml：</web-app> 之前加入以下内容：

<description>MySql ConnectionPool test</description>
    <resource-ref>
        <description>connection</description>
        <res-ref-name>jdbc/BookDB</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
    </resource-ref>

3)运行
http://localhost/DBTest/index.jsp