配置 JNDI綁定
一、 此處綁定的數(shù)據(jù)源是以 DBCP 為實(shí)現(xiàn)。首先必須將數(shù)據(jù)庫驅(qū)動（這里用了MYSQL數(shù)據(jù)庫）和DBCP所需要的 Jar 包復(fù)制到 Jetty 根目錄的 lib 目錄下。DBCP主要需要以下3個文件：
Commons-dbcp.jar
Commons-pool.jar
Commons-collections.jar
二、 在Jetty根目錄的contexts下建立wind.xml（該文件名為了增加可讀性最好與項(xiàng)目名相同）
wind.xml的內(nèi)容如下：
--------------------------------------------------------------------------------------------------------------------------
<?xml version="1.0" encoding="GB2312"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.mortbay.org/configure.dtd">
<!-- 配置一個WEB應(yīng)用 -->
<Configure class="org.mortbay.jetty.webapp.WebAppContext">
<Set name="contextPath">/wind</Set>
<Set name="resourceBase">E:/StartPortableApps/jspTest</Set>
<!-- 配置第一個環(huán)境變量 -->
<New id="woggle" class="org.mortbay.jetty.plus.naming.EnvEntry">
<Arg>woggle</Arg>
<Arg type="java.lang.Integer">4000</Arg>
</New>
<!-- 配置第二個環(huán)境變量 -->
<New id="wiggle" class="org.mortbay.jetty.plus.naming.EnvEntry">
<Arg>wiggle</Arg>
<Arg type="boolean">true</Arg>
</New>
<!-- 創(chuàng)建數(shù)據(jù)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>
<!-- 將實(shí)際的數(shù)據(jù)源綁定到 jdbc/mydatasource 這個 JNDI 名 -->
<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、 下面是測試該JNDI的jsp和servlet。
(1)在E:/StartPortableApps/jspTest（wind.xml設(shè)置的虛擬目錄的絕對路徑）下創(chuàng)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內(nèi)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內(nèi)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>