Tomcat7Tomcat
bitsCN.com1,mysql-connector-java-5.0.4-bin.jar 放入到 C:/Program Files/Apache Software Foundation/Tomcat 7.0/lib
2，项目的web.xml与tomcat一致
<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>webt3</display-name> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <resource-ref> <description>Tomcat 7 DBCP</description> <res-ref-name>jdbc/mysql5</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref></web-app>
<?xml version='1.0' encoding='utf-8'?><!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.--><!-- The contents of this file will be loaded for each web application --><Context> <!-- Default set of monitored resources --> <WatchedResource>WEB-INF/web.xml</WatchedResource> <!-- Uncomment this to disable session persistence across Tomcat restarts --> <!-- <Manager pathname="" /> --> <!-- Uncomment this to enable Comet connection tacking (provides events on session expiration as well as webapp lifecycle) --> <!-- <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" /> --> <Resource name="jdbc/mysql5" auth="Container" type="javax.sql.DataSource" maxActive="80" maxIdle="20" maxWait="10000" removeAbandoned="true" username="root" password="5201314" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/webt3" /></Context>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ page import="java.sql.*, javax.sql.*, javax.naming.*" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title></head><body><%Connection conn=null;PreparedStatement stmt=null;ResultSet rs=null;String sql=null;String username=null;String alias=null;String pwd=null;String strMsg=null;try{ Context cxt = new InitialContext(); DataSource ds = (DataSource)cxt.lookup("java:/comp/env/jdbc/mysql5"); conn = ds.getConnection(); sql="SELECT 1 "; stmt=conn.prepareStatement(sql); rs=stmt.executeQuery(sql); if( rs.next() ){ strMsg="连接ok"; out.println("连接ok"); }else{ out.println("rs.next() fail"); } rs.close(); } catch(Exception e){ out.println("连接失败:"+e.getMessage()); //e.printStackTrace();}try{ if(stmt!=null) stmt.close();}catch(Exception e){}try{ if(conn!=null) conn.close();}catch(Exception e){}%></body></html>OK,则成功
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