tomcat中的几种连接池配置代码

Tomcat6.0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:
1. <Resource name="jdbc/oracle"
2. auth="Container"
3. type="javax.sql.DataSource"
4. driverClassName="oracle.jdbc.driver.OracleDriver "
5. url=" jdbc:oracle:thin:@host:port:databse"
6. username=" user "
7. password="password"
8. maxActive="100"
9. maxIdle="30"
10. maxWait="10000" />
2.配置你的应用下的web.xml中的之间加入:
1. <resource-ref>
2. <description>DB Connection</description>
3. <res-ref-name>jdbc/oracle</res-ref-name>
4. <res-type>javax.sql.DataSource</res-type>
5. <res-auth>Container</res-auth>
6. </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="com.microsoft.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="com.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.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.
-->
<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>
<!-- Autocommit 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>