一、 此处绑定的数据源是以 DBCP 为实现。首先必须将数据库驱动(这里用了MYSQL数据库)和DBCP所需要的 Jar 包复制到 Jetty 根目录的 lib 目录下。DBCP主要需要以下3个文件:
Commons-dbcp.jarCommons-pool.jarCommons-collections.jar二、 在Jetty根目录的contexts下建立wind.xml(该文件名为了增加可读性最好与项目名相同)wind.xml的内容如下:--------------------------------------------------------------------------------------------------------------------------<?xml version="1.0" encoding="GB2312"?><!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.mortbay.org/configure.dtd"><!-- 配置一个WEB应用 --><Configure class="org.mortbay.jetty.webapp.WebAppContext"> <Set name="contextPath">/wind</Set> <Set name="resourceBase">E:/StartPortableApps/jspTest</Set><!-- 配置第一个环境变量 -->
<New id="woggle" class="org.mortbay.jetty.plus.naming.EnvEntry"> <Arg>woggle</Arg> <Arg type="java.lang.Integer">4000</Arg></New><!-- 配置第二个环境变量 -->
<New id="wiggle" class="org.mortbay.jetty.plus.naming.EnvEntry"> <Arg>wiggle</Arg> <Arg type="boolean">true</Arg></New><!-- 创建数据源 -->
<New id="ds" class="org.apache.commons.dbcp.BasicDataSource"> <Set name="driverClassName">com.mysql.jdbc.Driver</Set> <Set name="url">jdbc:mysql://localhost:3306/test</Set> <Set name="username">root</Set> <Set name="password">wind</Set> <Set name="maxActive" type="int">100</Set> <Set name="maxIdle" type="int">30</Set> <Set name="maxWait" type="int">1000</Set> <Set name="defaultAutoCommit" type="boolean">true</Set> <Set name="removeAbandoned" type="boolean">true</Set> <Set name="removeAbandonedTimeout" type="int">60</Set> <Set name="logAbandoned" type="boolean">true</Set></New><!-- 将实际的数据源绑定到 jdbc/mydatasource 这个 JNDI 名 -->
<New id="mydatasource" class="org.mortbay.jetty.plus.naming.Resource"> <Arg>jdbc/mydatasource</Arg> <Arg><Ref id="ds"/></Arg></New></Configure>--------------------------------------------------------------------------------------------------------------------------三、 下面是测试该JNDI的jsp和servlet。(1)在E:/StartPortableApps/jspTest(wind.xml设置的虚拟目录的绝对路径)下创建:index.jsp<%@ page language="java" pageEncoding="GB2312"%><% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html> <head> <base href="<%=basePath%>"><title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --></head>
<body>
<form method="post" action="aa" name="f1"><p> <input type="submit" value="test" name="button1"></p></form> </body></html>(2)TestServlet.java内容如下:package lee;import java.io.IOException;
import java.io.PrintStream;import java.sql.*;import javax.naming.InitialContext;import javax.servlet.ServletConfig;import javax.servlet.ServletException;import javax.servlet.http.*;import javax.sql.DataSource;public class TestServlet extends HttpServlet
{ InitialContext ic;public TestServlet()
{ }public void destroy()
{ super.destroy(); }protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { PrintStream out = new PrintStream(response.getOutputStream()); try { out.println(ic.lookup("wiggle")); out.println(ic.lookup("woggle")); DataSource ds = (DataSource)ic.lookup("jdbc/mydatasource"); Connection conn = ds.getConnection(); Statement stmt = conn.createStatement(); for(ResultSet rs = stmt.executeQuery("select * from echo_message"); rs.next(); out.println(rs.getString(2))); } catch(Exception e) { e.printStackTrace(); } }public void init(ServletConfig config)
throws ServletException { super.init(config); try { ic = new InitialContext(); } catch(Exception e) { throw new ServletException(e); } }}(3)web.xml内容如下:<?xml version="1.0" encoding="UTF-8"?><web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <servlet> <description>This is the description of my J2EE component</description> <display-name>This is the display name of my J2EE component</display-name> <servlet-name>TestServlet</servlet-name> <servlet-class>lee.TestServlet</servlet-class> </servlet><servlet-mapping>
<servlet-name>TestServlet</servlet-name> <url-pattern>/aa</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list></web-app>