一.基础实例
1.参照如下例子创建maven web工程：
https://www.cnblogs.com/lukelook/p/9187313.html
2.创建一个简单的Servlet 类
package com.my.web; import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; /**
* Servlet implementation class CallWeb
*/
public class CallWeb extends HttpServlet {
private static final long serialVersionUID = 1L; /**
* @see HttpServlet#HttpServlet()
*/
public CallWeb() {
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 stub
response.getWriter().append("<p>").append("This is just a test!").append("</p>");
response.getWriter().append("Served at: ").append(request.getContextPath());
} /**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
} }
3.在web.xml中配置如下：
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
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_3_0.xsd">
<!--如果 Servlet class 中已经用@WebServlet("/XXX")则不需要次配置，要不然会发生冲突-->
<!--
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>CallWeb</servlet-name>
<servlet-class>com.my.web.CallWeb</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>CallWeb</servlet-name>
<url-pattern>/CallWeb</url-pattern>
</servlet-mapping>
-->
</web-app>4.Run On Server CallWeb.class
5.在浏览器中输入如下地址即可访问：
http://localhost:8080/myWeb/CallWeb
二.表单数据提交
1.JSP界面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>show</title>
</head>
<body>
<form action="CallWeb" method="post">
<!--fieldset 对信息分组-->
<fieldset>
<legend>个人信息:</legend>
班级：<input list="browsers" name="stuClass">
<datalist id="browsers">
<option value="一一班">
<option value="一二班">
<option value="二一班">
<option value="二二班">
<option value="三一班">
</datalist><br/><br/>
用户名：<input type="text" name="stuName" id="stuName" value="请输入用户名"><br/><br/>
密码：<input type="password" name="stuPassword" id="stuPassword"><br/><br/>
<!-- label 当点击字时单选框也会被选上 -->
性别：<input type="radio" name="sex" value="女" id="male"><label for="male">女</label>
<input type="radio" name="sex" value="男" id="female"> <label for="female">男</label>
<input type="radio" name="sex" value="保密" id="unknow" checked="checked"><label for="unknow">保密</label><br/><br/>
</fieldset>
<fieldset>
<legend>其他信息:</legend>
兴趣爱好：<input type="checkbox" name="love" value="足球 ">足球
<input type="checkbox" name="love" value="篮球 ">篮球
<input type="checkbox" name="love" value="排球 ">排球<br/><br/>
地址： <select name="address">
<optgroup label="河南省">
<option value="RuZhou">汝州</option>
<option value="ZhengZhou">郑州</option>
</optgroup>
<optgroup label="陕西省">
<option value="XiAn">西安</option>
<option value="WeiNan">渭南</option>
</optgroup>
</select>
</fieldset>
<input type="submit" value="提交">
</form> </body>
</html>
2.Servlet处理类
package com.my.web; import java.io.IOException;
import java.io.PrintWriter; import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; /**
* Servlet implementation class Show
*/
@WebServlet("/CallWeb")
public class CallWeb extends HttpServlet {
private static final long serialVersionUID = 1L; /**
* @see HttpServlet#HttpServlet()
*/
public CallWeb() {
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 stub
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html");
PrintWriter pw = response.getWriter();
pw.println("班级："+request.getParameter("stuClass")+"<br/>");
pw.println("用户名："+request.getParameter("stuName")+"<br/>");
pw.println("密码："+request.getParameter("stuPassword")+"<br/>");
pw.println("性别："+request.getParameter("sex")+"<br/>");
String[] arr=request.getParameterValues("love");
for (String string : arr) {
pw.println("兴趣："+string+"<br/>");
}
pw.println("地址："+request.getParameter("address")+"<br/>"); } /**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
} }