数据连接池使用方法 JADI

1、编写context.xml 文件复制到 WebRoot/META_INF/context.xml

<?xml version='1.0' encoding='utf-8'?>

<Context>

    <WatchedResource>WEB-INF/web.xml</WatchedResource>

    <Resource 

    name="jdbc/oracle"  

    auth="Container" 

    type="javax.sql.DataSource" 

    driverClassName="oracle.jdbc.OracleDriver" 

    url="jdbc:oracle:thin:@localhost:1521:orcl"

    username="system" 

    password="FengZe2012" 

    maxActive="1000" 

    maxIdle="30" 

    maxWait="10000" 

    />

</Context>

2、复制相关的数据库jar文件到 WebRoot/WEB-INF/lib/目录下

3、 使用连接代码

<%@page import="java.sql.PreparedStatement"%>

<%@ page language="java" pageEncoding="utf-8"%>

<%@ page import="javax.naming.InitialContext"%>

<%@ page import="javax.naming.Context"%>

<%@ page import="javax.sql.DataSource"%>

<%@ page import="java.sql.Connection"%>

<%

Context ctx = new InitialContext();

DataSource ds = (DataSource)ctx.lookup("java:/comp/env/jdbc/oracle");

Connection conn = ds.getConnection();

PreparedStatement pst = conn.prepareStatement("create table t(t number)");

pst.execute();

pst.close();

conn.close();

out.print(conn);

%>