server|sqlserver1.       进入tomcat目录下的conf文件夹目录里,找到Server.xml在tomcat的Server.xml文件中在</Context>标签与</Host>标签里,定议连接语句,格式如下

<!—path定议你的应用程序的目录所 ,/DBTest表示在Tomcat Webapps目录下à

<!—docBase=”DBTest” 表示你执行止程序时路径名称,例如以下的执行路径就是http://localhost:8080/DBTest--> <Context path="/DBTest" docBase="DBTest"        debug="5" reloadable="true" crossContext="true">

    <!-- maxActive: 连接池的最大数量,要确保有足够的连接数-->

    <!-- maxIdle: 最大空闲连接数,设置为-1即表示不限制-->

    <!-- maxWait:最长等待连接时间(最大等待连接池反回可用的时间), 以纳秒为单位,即设为10000相等于10秒，如果设置成-1表示不确定-->

    <!-- username and password: 连接数据库使用的帐号与密码  -->

    <!-- driverClassName:连接数据库的驱动程序,如SQLServer就是

com.microsoft.jdbc.sqlserver.SQLServerDriver.-->

    <!-- url: 连接数据库路径,如

jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=KB_Rate-->

     <Resource name=" Default_JDBC " auth="Container" type="javax.sql.DataSource"               maxActive="100" maxIdle="30" maxWait="10000"               username="javauser" password="javadude" driverClassName=" com.microsoft.jdbc.sqlserver.SQLServerDriver "            url=" jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=KB_Rate""/>

   </Context>

   配置完成后,在DBTest目录下添加一个Test文件,如下:<% page contentType="text/html;charset=gb2312"%><% page import="java.sql.*"%><% page import="javax.sql.*"%><% page import="javax.naming.*"%><%  Connection conn = null;  Context initCtx = new InitialContext();  if (initCtx == null)     throw new Exception("不能获取Context!");      Context ctx = (Context) initCtx.lookup("java:comp/env");       Object obj = (Object) ctx.lookup("/Default_JDBC ");//获取连接池对象      javax.sql.DataSource ds = (javax.sql.DataSource) obj; //类型转换      conn = ds.getConnection();  Statement stmt = conn.createStatement();  PreparedStatement ps=conn.prepareStatement("select * from FinalOrderdata");  ResultSet rs=ps.executeQuery();  while(rs.next()){      out.println(rs.getString(1)+"
");        i++;  }rs.close();stmt.close();conn.close(); out.println("连接池测试成功"+i);

   到于TOMCAT5.0版本的设置也是差不多,不过在Server.xml中添加连接池设置语句上有所有不,可参考http://jakarta.apache.org/tomcat/tomcat-5.0-doc/jndi-datasource-examples-howto.html其它操作也是差不多,<Context path="/DBTest" docBase="DBTest"        debug="5" reloadable="true" crossContext="true"><Context path="/DBTest" docBase="DBTest"        debug="5" reloadable="true" crossContext="true">  <Logger className="org.apache.catalina.logger.FileLogger"             prefix="localhost_DBTest_log." suffix=".txt"             timestamp="true"/>  <Resource name="jdbc/TestDB"               auth="Container"               type="javax.sql.DataSource"/>  <ResourceParams name="jdbc/TestDB">    <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 -1 for no limit.  See also the DBCP documentation on this         and the minEvictableIdleTimeMillis configuration parameter.         -->    <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.         -->    <parameter>      <name>maxWait</name>      <value>10000</value>    </parameter>    <!-- MySQL dB username and password for dB connections  -->    <parameter>     <name>username</name>     <value>javauser</value>    </parameter>    <parameter>     <name>password</name>     <value>javadude</value>    </parameter>    <!-- Class name for the old mm.mysql JDBC driver - uncomment this entry and comment next         if you want to use this driver - we recommend using Connector/J though    <parameter>       <name>driverClassName</name>       <value>org.gjt.mm.mysql.Driver</value>    </parameter>     -->    <!-- Class name for the official MySQL Connector/J 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/javatest?autoReconnect=true</value>    </parameter>  </ResourceParams></Context>有不足的地方,请各为指正!

   还有,的就是请大虾门可以告诉一下小弟,如何设置法才能让连接池做到最高效,因为我试过用TOMCAT连接池连池,发现比较慢,反应较久,我不知道设错了那里,,!!我的设置如下:<Context path="/KB_Rate" docBase="/KB_Rate"        debug="5" reloadable="true" crossContext="true">     <Resource name="Default_JDBC" auth="Container" type="javax.sql.DataSource"               maxActive="100" maxIdle="30" maxWait="10000"               username="sa" password="1234" driverClassName="com.microsoft.jdbc.sqlserver.SQLServerDriver"              url="jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=KB_Rate"/></Context>