tomcat连接池默认连接池的配置
1、在conf/server.xml的
GlobalNamingResources
标签下添加：
<Resource name="jdbc/connPool" auth="Container" type="javax.sql.DataSource"
driverClassName="com.mysql.jdbc.Driver"
maxIdle="20"
maxWait="5000"
username="root"
password=""
url="jdbc:mysql://192.168.16.12:3306/edo"
maxActive="100"
removeAbandoned="true"
removeAbandonedTimeout="60"
logAbandoned="true"/>
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2、针对每个不同的项目添加连接池
\conf\catalina\localhost 连接池配置文件 文件名为项目名称：
<?xml version="1.0" encoding="UTF-8"?>
<Context>
<Resource name="jdbc/connPool"
auth="Container" type="javax.sql.DataSource"
driverClassName="com.mysql.jdbc.Driver"
maxIdle="20"
maxWait="5000"
username="root"
password=""
url="jdbc:mysql://192.168.16.12:3306/edo"
maxActive="100"
removeAbandoned="true"
removeAbandonedTimeout="60"
logAbandoned="true"/>
</Context>
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3、conf/content.xml中<content>标签中添加：
<ResourceLink name=" jdbc/connPool " global=" jdbc/connPool " type="javax.sql.DataSource"/>
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4、在web jsp访问方式：
<%@page import="java.lang.*"%>
<%@page import="java.sql.*"%>
<%@page import="java.util.*"%>
<%@page import="javax.naming.*"%>
<%@page import="javax.sql.*"%>
<%
??
??Context initContext = new InitialContext();?
??Context envContext = (Context)initContext.lookup("java:/comp/env");??
??// 找到DataSource?
??DataSource ds = (DataSource)envContext.lookup("jdbc/connPool");?
??Connection conn=null;
??PreparedStatement pstm = null;
??ResultSet rs = null;
??try {
???conn=ds.getConnection();
???String sql = "select id,name from userinfo";??
???pstm = conn.prepareStatement(sql);
???rs = pstm.executeQuery();
???if(rs.next()){
????System.out.println(rs.getInt(1)+"? "+rs.getString(2));
???}
??} catch (Exception e) {
???e.printStackTrace();
??}finally{
?? ?try{
????if( rs != null ) rs.close();
????if( pstm != null )? pstm.close();
????if( conn != null )conn.close();
???}catch( Exception e ){}
??}
%>
