Java Web 开发入门教程-优快云博客

本文链接：https://blog.youkuaiyun.com/liu904139492/article/details/7454644

1.j2ee的核心技术都有哪些。

jsp servlet  javabean struts2 hibernate spring EJB js html

2.HttpSessionEvent和httpSessionListerer的区别
3.写一个servlet，输出每一个空间

package com.neusoft.train;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class MyServlet extends HttpServlet {

@Override
protected void service(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  response.setContentType("text/html; charset=utf-8");
  PrintWriter out = response.getWriter();
  out.print("<html><head></head><body> " +
    "下拉列表：<select name='aame'>" +
    "<option>1</option><option>1</option><option>1</option><option>1</option><option>1</option>" +
    "</select></br> " +
    "文本域：<textarea name='name' cols=40 rows=8></textarea></br>" +
    "Checkbox：<input type='checkbox' name='name'> </br>" +
    "radio：<input type='radio' name='name' value=''> </br>" +
    "text：<input type=text name='foo' size=20> </br>" +
    "提交按钮<input type='submit' value='name'> </br>" +
    "图片：<input type='image' border=0 name='name' src='name.gif'> </br>" +
    "按钮<BUTTON>button</BUTTON> </br>" +
    "<marquee behavior=alternate>我飘来飘去。。。</marquee> </br>" +
    "有序表：<ol><li>fgdfg</li><li>fgdfg</li><li>fgdfg</li><li>fgdfg</li><li>fgdfg</li></ol> " +
    "无序表：<ul><li>fgdfg</li><li>fgdfg</li><li>fgdfg</li><li>fgdfg</li><li>fgdfg</li></ul>" +
    "div：<div id='work3' style='width:50px;height:50px;background-color:gray;'> </div></br>" +
    "<a href='http://www.baidu.com'>连接</a></br>" +
    "表格:<table border='1'><tr><td>qqq</td><td>www</td><td>eee</td></tr><tr><td>qqq</td><td>www</td><td>eee</td></tr><tr><td>qqq</td><td>www</td><td>eee</td></tr></table>" +
    "</body>");
}

}

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>com.neusoft.train.MyServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/hello.do</url-pattern>
</servlet-mapping>
</web-app>