tomcat4.1.24 Mysql连接池配法

<!--Here must use &amp; not use & -->
</parameter>
</ResourceParams>



</Context>



2.修改Webapps/ROOT/INF-WEB/web.xml

<?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>MySQL Test App</description>
<resource-ref>
<description>DB Connection</description>
<res-ref-name>jdbc/MysqlDB</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>

3.测试用的testdb.JSP内容:

<%@ page contentType="text/html;charset=GBK"%>
<%@ page import= "java.sql.* " %>
<%@ page import= "javax.naming.* "%>
<%
try{

Context initCtx = new InitialContext();

Context ctx = (Context) initCtx.lookup("java:comp/env");
//获取连接池对象

Object obj = (Object) ctx.lookup("jdbc/MysqlDB");

//类型转换

javax.sql.DataSource ds = (javax.sql.DataSource)obj;

Connection conn = ds.getConnection();

Statement stmt = conn.createStatement();

String strSql = " insert into test(id,name) values('007','hello,中国!') ";

stmt.executeUpdate(strSql);

strSql = " select id,name from test ";

ResultSet rs = stmt.executeQuery(strSql);
while(rs.next()){

out.println(rs.getString(1));

out.println(rs.getString(2) "<BR>");

}
conn.close();

}catch(Exception ex){

ex.printStackTrace();
throw new SQLException("cannot get Connection pool.");
}


%>
<hr>

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