一般是设置在server.xml中的,但是程序也要调用连接池的名字才可以找到数据库,
以tomcat中的server.xml为例:
配置连接池
<Context path="" docBase="wnjc" debug="1" reloadable="true" crossContext="true">
<Resource name="jdbc/wnjc" auth="Container" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/wnjc">
<parameter><name>factory</name><value>org.apache.commons.dbcp.BasicDataSourceFactory</value></parameter>
<parameter><name>driverClassName</name><value>oracle.jdbc.driver.OracleDriver</value></parameter>
<parameter><name>url</name><value>jdbc:oracle:thin:@192.168.3.16:1521:cucu</value></parameter>
<parameter><name>username</name><value>wnjc</value></parameter>
<parameter><name>password</name><value>wnjc</value></parameter>
<parameter><name>maxActive</name><value>20</value></parameter>
<parameter><name>maxIdle</name><value>10</value></parameter>
<parameter><name>maxWait</name><value>10000</value></parameter>
</ResourceParams>
</Context>
在web.xml中配置如下:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<description>CMS V1.0</description>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/wnjc</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
以tomcat中的server.xml为例:
配置连接池
<Context path="" docBase="wnjc" debug="1" reloadable="true" crossContext="true">
<Resource name="jdbc/wnjc" auth="Container" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/wnjc">
<parameter><name>factory</name><value>org.apache.commons.dbcp.BasicDataSourceFactory</value></parameter>
<parameter><name>driverClassName</name><value>oracle.jdbc.driver.OracleDriver</value></parameter>
<parameter><name>url</name><value>jdbc:oracle:thin:@192.168.3.16:1521:cucu</value></parameter>
<parameter><name>username</name><value>wnjc</value></parameter>
<parameter><name>password</name><value>wnjc</value></parameter>
<parameter><name>maxActive</name><value>20</value></parameter>
<parameter><name>maxIdle</name><value>10</value></parameter>
<parameter><name>maxWait</name><value>10000</value></parameter>
</ResourceParams>
</Context>
在web.xml中配置如下:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<description>CMS V1.0</description>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/wnjc</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
public static synchronized Connection pubGetCon() throws SQLException {
try {
Context jndiCntx = new InitialContext();
DataSource ds =
(DataSource)jndiCntx.lookup( "java:comp/env/jdbc/wnjc");
return ds.getConnection();
} catch (NamingException ne) {
throw new EJBException(ne);
}
}
//wnjc为连接池的名字