如何利用JBuilder2005开发Web应用程序

Test.jsp:
＜%@ page contentType="text/html; 
charset=Big5" %＞
＜html＞
＜head＞
　＜title＞DB Test＜/title＞
＜/head＞
＜body＞
　＜%
foo.DBTest tst = new foo.DBTest();
tst.init();
　%＞
　＜h2＞Results＜/h2＞
　Foo ＜%= tst.getFoo() %＞＜br/＞
　Bar ＜%= tst.getBar() %＞
＜/body＞
＜/html＞

DBTest.java
package foo;

import javax.naming.*;
import javax.sql.*;
import java.sql.*;
public class DBTest
{
　String foo = "Not Connected";
　int bar = -1;
　public void init() 
{
　　try{
　　　Context ctx = new InitialContext();
　　　if(ctx == null )
　　　　throw new Exception
("Boom - No Context");
　　　　DataSource ds 
=(DataSource)ctx.lookup
("java:comp/env/JDBC/TestDB");
　　　　if (ds != null) 
{
　　　　　Connection conn 
= ds.getConnection();
　　　　　if(conn != null) 
{
　　　　　　foo = "Got Connection "
+conn.toString();
　　　　　　Statement stmt =
conn.createStatement();
　　　　　　ResultSet rst 
=stmt.executeQuery("select id, foo, 
bar from testdata");
　　　　　　if(rst.next()) 
{
　　　　　　　foo=rst.getString(2);
　　　　　　　bar=rst.getInt(3);
　　　　　　}
　　　　　　conn.close();
　　　　　}
　　　　}
　　　}catch(Exception e) 
{
　　　　e.printStackTrace();
　　　}
　　}
　public String getFoo() 
{ 
return foo; 
}
　public int getBar() 
{ 
return bar;
}
}

web.xml:
＜?xml version="1.0" encoding="UTF-8"?＞

＜web-app 
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" 
version="2.4"＞

　＜description＞MySQL Test App＜/description＞
　＜resource-ref＞
　　＜description＞DB Connection＜/description＞
　　＜res-ref-name＞jdbc/TestDB＜/res-ref-name＞
　　＜res-type＞javax.sql.DataSource＜/res-type＞
　　＜res-auth＞Container＜/res-auth＞
　＜/resource-ref＞
＜/web-app＞

　　server8080.xml:
＜?xml version="1.0"
encoding="UTF-8"?＞
＜Server debug="0" port="8081"
shutdown="SHUTDOWN"＞
＜Service name="Catalina"＞
　＜Connector acceptCount="10" 
connectionTimeout="60000" debug="0" 
maxThreads="75" minSpareThreads="5" 
port="8080"/＞
　＜Engine debug="0" 
defaultHost="localhost"
name="Catalina"＞
　＜Host apPBase=
"C:\myWeb\Tomcat\webapps" 
autoDeploy="false" debug="0" 
deployXML="false" name="localhost" 
unpackWARs="false"＞

　＜Context path="/DBTest" 
docBase="C:\myWeb\DBTest" 
debug="5" reloadable="true" 
crossContext="true"
workDir="C:\myWeb\Tomcat\work\DBTest"＞

　＜Logger 
className="org.apache.catalina.logger.FileLogger" prefix="localhost_DBTest_log."
suffix=".txt" timestamp="true"/＞

　＜Resource name="JDBC/TestDB" 
auth="Container"
type="Javax.sql.DataSource"/＞

　＜ResourceParams name="jdbc/TestDB"＞
　＜parameter＞
　　＜name＞factory＜/name＞
　　＜value＞org.apache.commons.dbcp.
BasicDataSourceFactory＜/value＞
　＜/parameter＞
　＜!--
　　Maximum number of dB
connections in pool. Make sure you
　　configure your MySQLd
max_connections large enough to handle
　　all of your db
connections. Set to 0 for no limit.
　--＞
　＜parameter＞
　　＜name＞maxActive＜/name＞
　　＜value＞100＜/value＞
　＜/parameter＞
　＜!--
　　Maximum number of idle dB
connections to retain in pool.
　　Set to 0 for no limit.
　--＞
　＜parameter＞
　　＜name＞maxIdle＜/name＞
　　＜value＞30＜/value＞
　＜/parameter＞
　＜!--
　　Maximum time to wait for a dB 
connection to become available
　　in ms, in this example 10 seconds.
An Exception is thrown if
　　this timeout is exceeded. 
Set to -1 to wait indefinitely.
　--＞
　＜parameter＞
　　＜name＞maxWait＜/name＞
　　＜value＞10000＜/value＞
　＜/parameter＞
　＜!-- MySQL dB username and
password for dB connections --＞
　＜parameter＞
　　＜name＞username＜/name＞
　　＜value＞sa＜/value＞
　＜/parameter＞
　＜parameter＞
　　＜name＞password＜/name＞
　　＜value＞topcomputer＜/value＞
　＜/parameter＞
　＜!-- Class name for mm.mysql JDBC driver --＞
　＜parameter＞
　　＜name＞driverClassName＜/name＞
　　＜value＞com.microsoft.
jdbc.sqlserver.SQLServerDriver＜/value＞
　＜/parameter＞
　＜!--
　　The JDBC connection url 
for connecting to your MySQL dB.
　　The autoReconnect=true argument 
to the url makes sure that the
　　mm.mysql JDBC Driver will 
automatically reconnect if mysqld closed the
　　connection. mysqld by default
closes idle connections after 8 hours.
　--＞
　＜parameter＞
　　＜name＞url＜/name＞
　　＜value＞jdbc:microsoft:sqlserver:
//nt04:1433;DatabaseName=test＜/value＞
　＜/parameter＞
＜/ResourceParams＞
＜/Context＞
＜/Host＞
＜/Engine＞
＜/Service＞
＜/Server＞

creatTable.sql:
if exists (select * from dbo.
sysobjects where id = 
object_id(N'[dbo].[testdata]') 
and OBJECTPROPERTY
(id, N'IsUserTable') = 1)
drop table [dbo].[testdata]
GO

CREATE TABLE [dbo].[testdata] 
(
　[id] [int] NOT NULL ,
　[foo] [varchar] (50) 
COLLATE Chinese_Taiwan_Stroke_CI_AS NULL ,
　[bar] [int] NOT NULL 
) ON [PRIMARY]
GO

startup.bat:
C:\Borland\JBuilder2005\
JDK1.4\bin\Javaw -classpath
"C:\Borland\JBuilder2005\thirdparty\
jakarta-tomcat-5.0.27\bin\bootstrap.jar;
C:\Borland\JBuilder2005\jdk1.4\lib\tools.jar" 
"-Dcatalina.home=C:/Borland/JBuilder2005
/thirdparty/jakarta-tomcat-5.0.27" 
org.apache.catalina.startup.Bootstrap -config 
"C:\myWeb\Tomcat\conf\server8080.XML" start
Shutdown.bat:
C:\Borland\JBuilder2005\jdk1.4
\bin\javaw -classpath 
"C:\Borland\JBuilder2005\thirdparty\
jakarta-tomcat-5.0.27\bin\bootstrap.jar;
C:\Borland\JBuilder2005\jdk1.4\lib\tools.jar" 
"-Dcatalina.home=C:/Borland/JBuilder2005
/thirdparty/jakarta-tomcat-5.0.27" 
org.apache.catalina.startup.Bootstrap -config 
"C:\myWeb\Tomcat\conf\server8080.xml" stop

DBTest.xml
＜!--
　Context configuration file for 
the Tomcat Administration Web App
$Id: admin.xml,
v 1.2 2002/07/23 12:13:05 remm Exp $

--＞

＜Context path="/DBTest" 
docBase="/DBTest" debug="5" 
reloadable="true" crossContext="true" 
workDir="../work/DBTest"＞

＜Logger className="org.apache.
catalina.logger.FileLogger" 
prefix="localhost_DBTest_log." 
suffix=".txt" timestamp="true"/＞

＜Resource name="JDBC/TestDB"
auth="Container" 
type="javax.sql.DataSource"/＞
＜ResourceParams 
name="jdbc/TestDB"＞
　＜parameter＞
　　＜name＞factory＜/name＞
　　＜value＞org.apache.commons.dbcp.
BasicDataSourceFactory＜/value＞
　＜/parameter＞
　＜!--
　　Maximum number of dB 
connections in pool. Make sure you
　　configure your MySQLd max_connections
large enough to handle
　　all of your db connections.
Set to 0 for no limit.
　--＞
　＜parameter＞
　　＜name＞maxActive＜/name＞
　　＜value＞100＜/value＞
　＜/parameter＞
　＜!--
　　Maximum number of idle dB
connections to retain in pool.
　　Set to 0 for no limit.
　--＞
　＜parameter＞
　　＜name＞maxIdle＜/name＞
　　＜value＞30＜/value＞
　＜/parameter＞
　＜!--
　　Maximum time to wait for a dB 
connection to become available
　　in ms, in this example 10 seconds. 
An Exception is thrown if
　　this timeout is exceeded. 
Set to -1 to wait indefinitely.
　--＞
　＜parameter＞
　　＜name＞maxWait＜/name＞
　　＜value＞10000＜/value＞
　＜/parameter＞
　＜!-- MySQL dB username and
password for dB connections --＞
　＜parameter＞
　　＜name＞username＜/name＞
　　＜value＞sa＜/value＞
　＜/parameter＞
　＜parameter＞
　　＜name＞password＜/name＞
　　＜value＞topcomputer＜/value＞
　＜/parameter＞
　＜!-- Class name for mm.mysql 
JDBC driver --＞
　＜parameter＞
　　＜name＞driverClassName＜/name＞
　　＜value＞com.microsoft.jdbc.
sqlserver.SQLServerDriver＜/value＞
　＜/parameter＞
　＜!--
　　The JDBC connection url for 
connecting to your MySQL dB.
　　The autoReconnect=true argument 
to the url makes sure that the
　　mm.mysql JDBC Driver will automatically
reconnect if mysqld closed the
　　connection. mysqld by default closes
idle connections after 8 hours.
　--＞
　＜parameter＞
　　＜name＞url＜/name＞
　　＜value＞jdbc:microsoft:sqlserver:
//nt04:1433;DatabaseName=test＜/value＞
　＜/parameter＞
＜/ResourceParams＞
＜/Context＞