开发工具:Eclipse J2EE 3.6
运行环境:jdk1.6
部署环境:Tomcat7
数据库连接池用的是dbcp,网上download下来的三个jar包。
把数据库连接池包和jdbc的包放到tomcat的lib下。
新建web project,在META-INF下新建context.xml文件,放入代码(一系列配置)。
<Context path="Prj02" docBase="Prj02"
debug="5" crossContext="true" reloadable="true"
cachingAllowed="true" cacheMaxSize="20480"
cacheTTL="10000">
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<Resource
name="jdbc/Prj02"
auth="Container"
type= "javax.sql.DataSource"
factory="org.apache.commons.dbcp.BasicDataSourceFactory"
driverClassName="oracle.jdbc.driver.OracleDriver"
url="jdbc:oracle:thin:@localhost:1521:orcl"
username="yff"
password="yff"
maxActive="100"
maxIdle="30"
maxWait="10000">
</Resource>
</Context>
WebContent下新建index.jsp,放入代码(jdbc连接,sql语句查询)。
<%@ page import="java.sql.*,javax.sql.*,javax.naming.*,org.apache.commons.dbcp.BasicDataSource,javax.rmi.PortableRemoteObject;" %>
<%
Connection conn = null;
Connection m_conn;
Statement m_stat;
try{
Context ctx = new InitialContext();
Object obj = ctx.lookup("java:comp/env/jdbc/Prj02");
DataSource ds = (DataSource)PortableRemoteObject.narrow(obj, DataSource.class);
conn = ds.getConnection();
if(conn!=null){
m_conn = ds.getConnection();
m_stat = m_conn.createStatement();
ResultSet rs = m_stat.executeQuery("select * from TEST"); while(rs.next()){ out.print("id =" + rs.getInt("id") + ", name=" + rs.getString("name")+"\n" );
}
}
}catch (Exception e) {
out.print(e.getMessage());
e.printStackTrace();
}finally {
if(conn!=null) conn.close();
}
%>
部署至Tomcat上。
(oracle内数据)
部署之后的效果。