第一篇：tomcat与helloworld篇

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Tomcat Servlet F#Struts Web

严重警告：知道tomcat的人不要往下看<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

开场白：比较枯燥、相当无味

开始了

需要什么?

Jdk和tomcat

我的版本: j2sdk<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><chsdate w:st="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.4.1</chsdate>和tomcat-4.1.18

什么,还没有这两个东东?那就请您不要在往下看了,赶快狗狗去或者email去.

安装和配置

把你的jdk装了吧,就装在你的d盘如何? D:\j2sdk<chsdate w:st="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.4.1</chsdate>

把tom先生的猫(tomcat)也解压缩了吧,也放在d盘算了, D:\tomcat-<chsdate w:st="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">4.1.18</chsdate>

设置你的系统环境变量,为了让我的这个成为傻瓜式的,请原谅我的罗嗦.

我的电脑—右键—高级—环境变量—系统变量—

新建

变量名: java_home

变量值: D:\j2sdk<chsdate w:st="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.4.1</chsdate>

编辑

变量名: Path

变量值: D:\j2sdk<chsdate w:st="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">1.4.1</chsdate>\bin\;(在最前面加)

ok,确定就行了

启动

在你的D:\tomcat-<chsdate w:st="on" isrocdate="False" islunardate="False" day="30" month="12" year="1899">4.1.18</chsdate>\bin\下找到startup.bat,用老鼠点她两下,让她运行起来吧.

在你的ie地址栏输入: http://localhost:8080/

看到

<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><shapetype id="_x0000_t75" stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><stroke joinstyle="miter"></stroke><formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f eqn="sum @0 1 0"></f><f eqn="sum 0 0 @1"></f><f eqn="prod @2 1 2"></f><f eqn="prod @3 21600 pixelWidth"></f><f eqn="prod @3 21600 pixelHeight"></f><f eqn="sum @0 0 1"></f><f eqn="prod @6 1 2"></f><f eqn="prod @7 21600 pixelWidth"></f><f eqn="sum @8 21600 0"></f><f eqn="prod @7 21600 pixelHeight"></f><f eqn="sum @10 21600 0"></f></formulas><path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></path><lock aspectratio="t" v:ext="edit"></lock></shapetype><shape id="_x0000_s1026" style="WIDTH: 414pt; HEIGHT: 154.1pt; mso-position-horizontal-relative: char; mso-position-vertical-relative: line" fillcolor="#00e4a8" type="#_x0000_t75"><font size="2"><imagedata o:title="" src="file:///C:%5CDOCUME~1%5CADMINI~1%5CLOCALS~1%5CTemp%5Cmsohtml1%5C05%5Cclip_image001.png"></imagedata><shadow color="#1c1c1c"></shadow><?xml:namespace prefix = w ns = "urn:schemas-microsoft-com:office:word" /><wrap type="none"></wrap><anchorlock></anchorlock></font></shape>

恭喜你,你的配置工作做好了.

来hellochina一下

所有程序介绍的书第一个例子恐怕都是helloworld,我们来个hellochian如何

在你的tomcat下建立一个文件夹,就叫myOne吧

myOne下建个文件夹WEB-INF

WEB-INF下建两个文件夹:classes和lib

照着写吧,不要问为什么?想你的程序运行起来,就别写错了.

用你的记事本写hello.jsp放到你的myOne下面吧

<html>hellochina</html>

什么,还不知道html为何物?那你还是学习学习吧，写的不好，至少看的明白吧。

用你的记事本写web.xml放到WEB-INF下吧

<?xml version="1.0" encoding="gb2312"?>

<!DOCTYPE web-app

PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"

"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">

<web-app>

<servlet-name>action</servlet-name>

<!-- Specify servlet class to use:

- Struts1.0.x: ActionComponentServlet

- Struts1.1: ActionServlet

- no Struts: TilesServlet

-->

<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>

<!-- Tiles Servlet parameter

Specify configuration file names. There can be several comma

separated file names

-->

<!-- Tiles Servlet parameter

Specify Tiles debug level.

O : no debug information

1 : debug information

2 : more debug information

-->

<init-param>

<param-name>definitions-debug</param-name>

<param-value>1</param-value>

</init-param>

<!-- Tiles Servlet parameter

Specify Digester debug level. This value is passed to Digester

O : no debug information

1 : debug information

2 : more debug information

-->

<init-param>

<param-name>definitions-parser-details</param-name>

<param-value>0</param-value>

</init-param>

<!-- Tiles Servlet parameter

Specify if xml parser should validate the Tiles configuration file.

true : validate. DTD should be specified in file header.

false : no validation

-->

<init-param>

<param-name>definitions-parser-validate</param-name>

<param-value>true</param-value>

</init-param>

<init-param>

<param-name>config</param-name>

<param-value>/WEB-INF/struts-config.xml</param-value>

</init-param>

<init-param>

<param-name>validate</param-name>

<param-value>true</param-value>

</init-param>

<init-param>

<param-name>debug</param-name>

<param-value>2</param-value>

</init-param>

<init-param>

<param-name>detail</param-name>

<param-value>2</param-value>

</init-param>

<load-on-startup>2</load-on-startup>

</servlet>

<servlet-mapping>

<servlet-name>action</servlet-name>

<url-pattern>*.do</url-pattern>

</servlet-mapping>

<welcome-file-list>

<welcome-file>login.jsp</welcome-file>

</welcome-file-list>

</web-app>

什么,太长了,写的辛苦?ctrl+c和ctrl+v会吧?

什么,看不懂?我有叫你看明白吗?

把你的tomcat重新启动(就是关了,再打开)一下吧.

在你的ie地址栏输入: http://localhost:8080/hello.jsp

好了

看到结果了吧。就是一句：hellochina。

怎么，觉得太麻烦了？为写这么简单个东东，搞这么多的名堂，太“脱裤子放屁”了吧？

没有人叫你用这个来写一个helloworld的才程序啊。不要觉得它简单，学问可大着呢！好了，当你看到这个例子的结果的时候，那就该对你说：欢迎你，你已经看到“用java开发三层结构程序”的门了。重申：你只是看到门了，还没走到门边，就更别说入门了，继续努力吧，好戏还在后头呢！

本章后话

还记得我们第一个例子的目录结构吗？一定要把你的应用放在tomcat的webapps下面，而且你的应用中一定要有WEB-INF，在WEB-INF下一定要有web.xml，当然在WEB-INF下的文件夹classes和文件夹lib对于你现在来说还没什么用，但是你就先这样照葫芦画瓢吧。将来把你的程序的JAVA类放在classes里，把需要的JAR包放在lib里。

为了让你把目录结构看的更明白，我画了个很丑的东西（圆柱表示文件夹，圆角矩形表示文件）。

好了，希望你的myOne程序一切顺利。

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