tomcat中的几种连接池配置代码

Tomcat 6.0连接池配置

  1.配置 tomcat 下的conf下的context.xml文件,在之间添加连接池配置:

	<Resource name="jdbc/oracle"
	       auth="Container"   
	       type="javax.sql.DataSource"   
	       driverClassName="oracle.jdbc.driver.OracleDriver "   
	       url=" jdbc:oracle:thin:@host:port:databse"   
	       username=" user "   
	       password="password"   
	       maxActive="100"   
	       maxIdle="30"   
	       maxWait="10000" />   

2.配置你的应用下的web.xml中的之间加入:

	<resource-ref>   
	    <description>DB Connection</description>   
	    <res-ref-name>jdbc/oracle</res-ref-name>   
	    <res-type>javax.sql.DataSource</res-type>   
	    <res-auth>Container</res-auth>   
	  </resource-ref>  

3.把连接数据库的第三方驱动放到common/lib下面就ok了
4.测试程序我就不写了

Tomcat5.5x连接池配置

方式一、全局数据库连接池
1、通过管理界面配置连接池，或者直接在tomcat\conf\server.xml的GlobalNamingResources中增加

<Resource name="jdbc/mydb" type="javax.sql.DataSource" password="mypwd" driverClassName=" commicrosoft.jdbc.sqlserver.SQLServerDriver" maxIdle="2" maxWait="5000" validationQuery="select 1" username="sa" url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb" maxActive="4"/>

2、在tomcat\webapps\myapp\META-INF\context.xml的Context中增加：

<ResourceLink global="jdbc/mydb" name="jdbc/mydb" type="javax.sql.DataSource"/>

这样就可以了。
方式二、全局数据库连接池
1、同上
2、在tomcat\conf\context.xml的Context中增加：

<ResourceLink global="jdbc/mydb" name="jdbc/mydb" type="javax.sql.DataSource"/>

方式三、局部数据库连接池
只需在tomcat\webapps\myapps\META-INF\context.xml的Context中增加：

<Resource name="jdbc/mydb" type="javax.sql.DataSource" password="mypwd" driverClassName="<SPAN class=hilite4>com</SPAN>.microsoft.jdbc.sqlserver.SQLServerDriver" maxIdle="2" maxWait="5000" validationQuery="select 1" username="sa" url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb" maxActive="4"/>

参数说明：
driveClassName：JDBC驱动类的完整的名称；
maxActive：同时能够从连接池中被分配的可用实例的最大数；
maxIdle：可以同时闲置在连接池中的连接的最大数；
maxWait：最大超时时间，以毫秒计；
password：用户密码；
url：到JDBC的URL连接；
user：用户名称；
validationQuery：用来查询池中空闲的连接。
以上三种方式在tomcat 5.5.4下都可以。另外，sql server的jdbc driver是从微软网站上下载的sql server jdbc (sp3)。

tomcat5.0连接池配置
在tomcat的下面路径（Tomcat\conf\Catalina\localhost）下建一个xml文件，内容如下

<Resource name="jdbc/test" auth="Container" type="javax.sql.DataSource"/>
    <ResourceParams name="jdbc/test">
        <parameter>
            <name>factory</name>
            <value>org.apache.<SPAN class=hilite4>com</SPAN>mons.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.
             -->
        <parameter>
            <name>maxWait</name>
            <value>10000</value>
        </parameter>
        <!-- MySQL dB username and password for dB connections  -->
        <parameter>
            <name>username</name>
            <value>sa</value>
        </parameter>
        <parameter>
            <name>password</name>
            <value>test</value>
        </parameter>
        <!-- Class name for JDBC driver -->
        <parameter>
            <name>driverClassName</name>
            <value>net.sourceforge.jtds.jdbc.Driver</value>
        </parameter>
        <!-- Auto commit setting.  This setting is required to make
             Hibernate work.  Or you can remove calls to commit(). -->
        <parameter>
            <name>defaultAutoCommit</name>
            <value>true</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:jtds:sqlserver://url/filedb;charset=gb2312;autoReconnect=true</value>
        </parameter>
        <!-- Recover abandoned connections -->
        <parameter>
            <name>removeAbandoned</name>
            <value>true</value>
        </parameter>
        <!-- Set the number of seconds a dB connection has been idle
             before it is considered abandoned.
             -->
        <parameter>
            <name>removeAbandonedTimeout</name>
            <value>60</value>
        </parameter>
        <!-- Log a stack trace of the code which abandoned the dB
             connection resources.
             -->
        <parameter>
            <name>logAbandoned</name>
            <value>true</value>
        </parameter>
    </ResourceParams>