1.从http://www.microsoft.com/downloads/details.aspx?FamilyID=4f8f2f01-1ed7-4c4d-8f7b-3d47969e66ae&DisplayLang=en#filelist下载"Microsoft SQL Server 2000 Driver for JDBC",并安装,得到msbase.jar,mssqlserver.jar和msutil.jar三个文件,将三个文件COPY到TOMCAT 4.1下common/lib文件夹中
2.在TOMCAT 4.1的SERVER.XML中HOST域中添加如下代码<Context path="/myweb" docBase="myweb" debug="0" reloadable="true" crossContext="true"> <Resource name="jdbc/mydb" auth="Container" type="javax.sql.DataSource"/> <ResourceParams name="jdbc/mydb"> <parameter> <name>factory</name> <value>org.apache.commons.dbcp.BasicDataSourceFactory</value> </parameter> <parameter> <name>maxActive</name> <value>100</value> </parameter> <parameter> <name>maxIdle</name> <value>30</value> </parameter> <parameter> <name>maxWait</name> <value>10000</value> </parameter> <parameter> <name>username</name> <value>sa</value> </parameter> <parameter> <name>password</name> <value>你的密码</value> </parameter> <parameter> <name>driverClassName</name> <value>com.microsoft.jdbc.sqlserver.SQLServerDriver</value> </parameter> <parameter> <name>url</name> <value>jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=pubs</value> </parameter> </ResourceParams></Context>
3.在webapps下新建文件夹"myweb","myweb/WEB-INF","myweb/WEB-INF/classes"
4.在WEB-INF下新建文件"web.xml",并添加如下内容<?xml version="1.0" encoding="ISO-8859-1"?><!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd"><web-app> <display-name>My Web</display-name> <servlet-mapping> <servlet-name>invoker</servlet-name> <url-pattern>/servlet/*</url-pattern> </servlet-mapping> <resource-ref> <res-ref-name>jdbc/mydb</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref></web-app>
5.编写servlet程序JDBCPoolServ.javaimport java.sql.*;import javax.naming.Context;import javax.sql.DataSource;import javax.naming.InitialContext;import javax.servlet.*;import javax.servlet.http.*;import java.io.*;
public class JDBCPoolServ extends HttpServlet{ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException { DataSource ds=null; Connection con=null; String val="null",title="JDBC Pooling Test"; try{ Context initCtx = new InitialContext(); if(initCtx == null ) throw new Exception("Boom - No Context"); ds = (DataSource)initCtx.lookup( "java:comp/env/jdbc/mydb"); if (ds != null){ con = ds.getConnection(); if (con != null){ Statement stmt=con.createStatement(); ResultSet rs=stmt.executeQuery("select * from authors"); rs.next(); val=rs.getString("au_id"); rs.close(); stmt.close(); } con.close(); } } catch(Exception ex){ System.out.println(ex.getMessage()); } response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println("<html>"); out.println("<head>"); out.println("<title>" + title + "</title>"); out.println("</head>"); out.println("<body bgcolor=/"white/">"); out.println("<h1>" + val + "</h1>"); out.println("</body>"); out.println("</html>"); }}
6.编译JDBCPoolServ.java得到JDBCPoolServ.class(注意加入servlet.jar包),将其COPY到"myweb/WEB-INF/classes"下
7.启动SQL SERVER2000
8.启动TOMCAT
9.浏览http://127.0.0.1:8080/myweb/servlet/JDBCPoolServ
10.在IE中可看到"172-32-1176"
注意:如果无法正常运行请检查以上文件夹名,URL和JAVA类名大小写是否一致
BluePengui@china.com
BluePenguin2003-2-11
