Eclipse+tomcat开发j2ee经典入门例子

安装配置tomcat

1. 去tomcat官网下载安装包安装

2. 变量名：CATALINA_HOME 变量值：tomcat安装路径

3. 在浏览器收http：//localhost:8080测试是否安装成功，不成功百度

安装eclipse和插件

1. 去官方网站下载eclipse j2ee （要注意tomcat 插件和eclipse版本对应,本人安装的是juno）

2. 载Eclipsefor tomcat插件下载地址 http://www.eclipsetotale.com/tomcatPlugin.html

3. 解压放到eclipse安装目录下的/dropins/目录下和/plugins/目录下

4. 打开eclipse会看到tomcat 图标

5. Windows->preferences,找到Tomcat选项：选择Tomcat版本(没7.0，选6.x即可)，然后配置Tomcat安装目录，如下图：

6. 配置Server选项，找到Server->Server runtime environment,新建一个Server:

6. 单击tomcat图标，在输出console会有tomcat的信息，在浏览器打开http://localhost:8080/，会弹出tomcat主页

编写测试代码helloworld

1. File---new-----project ----Dynamic web（注意，dynamic web module 要选择2.5，这样web.xml就可以自动配置点next ，最后要勾选Generate web.xml deploymentdesctiptor
）

2. 编写jsp代码，右键webContent ----new---other---web---jsp 右键----run as ------run on server

3. 编写servlet代码Javaresources 右键 new----servlet

public class HW extends HttpServlet {private static final long serialVersionUID = 1L;/*** @see HttpServlet#HttpServlet()*/public HW() {super();// TODO Auto-generated constructor stub}/*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)*/protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stubPrintWriter out=response.getWriter();out.println("hello servlet!");}/*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)*/protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stubdoGet(request,response);}}

Web.xml会自动更新右键---run onserver 链接http://localhost:8080/HelloWorld/HW

其中HelloWorld 就是项目名字 HW就是web.xml指定的目录<url-pattern>