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

<ResourceParams name="jdbc/mysql">
  <parameter>
  <name>factory</name>
  <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
  </parameter>
  <parameter>
  <name>maxWait</name>
  <value>5000</value>
  </parameter>
  <parameter>
  <name>maxActive</name>
  <value>20</value>
  </parameter>
  <parameter>
  <name>password</name>
  <value>password</value>
  </parameter>
  <parameter>
  <name>url</name>
  <value>jdbc:mysql://localhost:3306/mysql</value>
  </parameter>
  <parameter>
  <name>driverClassName</name>
  <value>com.mysql.jdbc.Driver</value>
  </parameter>
  <parameter>
  <name>maxIdle</name>
  <value>10</value>
  </parameter>
  <parameter>
  <name>username</name>
  <value>root</value>
  </parameter>
</ResourceParams>

</Context>
 
在工½E‹ç›®å½•WebContent\WEB-INF下的web.xml中添加：(x¨¬)
 <resource-ref>
  <description>DB Connection</description>
　　<res-ref-name>jdbc/mysql</res-ref-name>
　　<res-type>javax.sql.DataSource</res-type>
　　<res-auth>Container</res-auth>
　</resource-ref>

java代码实现åQ?br>      InitialContext initctx=new InitialContext();
      Context ctx= (Context) initctx.lookup("java:comp/env");
      DataSource ds=(DataSource)ctx.lookup("jdbc/mysql");
     
      Connection cn = ds.getConnection();
      Statement st = cn.createStatement();