Jetty的JNDI数据源

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.jar
Commons-pool.jar
Commons-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">

<Configure class="org.mortbay.jetty.webapp.WebAppContext">
<Set name="contextPath">/wind</Set>
<Set name="resourceBase">E:/StartPortableApps/jspTest</Set>

<New id="woggle" class="org.mortbay.jetty.plus.naming.EnvEntry">
<Arg>woggle</Arg>
<Arg type="java.lang.Integer">4000</Arg>
</New>

<New id="wiggle" class="org.mortbay.jetty.plus.naming.EnvEntry">
<Arg>wiggle</Arg>
<Arg type="boolean">true</Arg>
</New>

<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>

<New id="mydatasource" class="org.mortbay.jetty.plus.naming.Resource">
<Arg>jdbc/mydatasource</Arg>
<Arg><Ref id="ds"/></Arg>
</New>
</Configure>
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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>

</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>