Tomcat5.5配置多数据源
以Tomcat5.5:（一）在apache-tomcat-5.5\conf的context.xml文件的<Context></Context>元素中：
<Resource name="jdbc/mysql1" auth="Container" type="javax.sql.DataSource"
maxActive="50" maxIdle="30" maxWait="10000" logAbandoned="true"
username="root" password="123456" driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/dbmy"/>
<Resource name="jdbc/mysql2" auth="Container" type="javax.sql.DataSource"
maxActive="50" maxIdle="30" maxWait="10000" logAbandoned="true"
username="root" password="123456" driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/mydb"/>
（二）在web.xml中：
<resource-ref>
<description>DB1 Connection</description>
<res-ref-name>jdbc/mysql1</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<resource-ref>
<description>DB2 Connection</description>
<res-ref-name>jdbc/mysql2</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
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