Beer-v2

来源：互联网发布：真人录音配音软件编辑：程序博客网时间：2024/06/10 09:31

model:

/** * */package com.example.model;import java.util.ArrayList;import java.util.List;/** * @author 2172980000502 * */public class BeerExpert {public List<String> getBrands(String colorValue) {List<String> brands = new ArrayList<String>();if ("1".equals(colorValue)) {brands.add("b1");brands.add("b2");} else if ("2".equals(colorValue)) {brands.add("b3");brands.add("b4");} else if ("3".equals(colorValue)) {brands.add("b5");brands.add("b6");} else if ("4".equals(colorValue)) {brands.add("b7");brands.add("b8");}return brands;}}

servlet:

package com.example.web;import java.io.IOException;import java.io.PrintWriter;import java.util.List;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.example.model.BeerExpert;public class BeerSelect extends HttpServlet {/** * */private static final long serialVersionUID = 1L;/** * Constructor of the object. */public BeerSelect() {super();System.out.println("in Constructor of BeerSelect.");}/** * Destruction of the servlet. <br> */public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code hereSystem.out.println("in destroy of Constructor.");}/** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to * post. * * @param request * the request send by the client to the server * @param response * the response send by the server to the client * @throws ServletException * if an error occurred * @throws IOException * if an error occurred */public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {System.out.println("int doPost of Constructor.");response.setContentType("text/html");PrintWriter out = response.getWriter();out.print("beer selection advice<br>");String colorValue = request.getParameter("color");BeerExpert be = new BeerExpert();List<String> result = be.getBrands(colorValue);for (String string : result) {out.print("<br>try : " + string);}}/** * Initialization of the servlet. <br> * * @throws ServletException * if an error occurs */public void init() throws ServletException {// Put your code hereSystem.out.println("in init of Constructor.");}}

html:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>forml.html</title><meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="this is my page"><meta http-equiv="content-type" content="text/html; charset=UTF-8"></head><body><h1>beer selection page</h1><br><form method="post" action="SelectBeer.do" name="beerForm"><p>select beer characteristics</p><p><select name="color" size="1"><option value="1">light</option><option value="2">amber</option><option value="3">brown</option><option value="4">dark</option></select></p><p><input type="submit" value="submit" name="submit"></p><p> </p><p> </p><p> </p></form></body></html>

web.xml:

<?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><description>BeerSelect</description><display-name>BeerSelect</display-name><servlet-name>BeerSelect</servlet-name><servlet-class>com.example.web.BeerSelect</servlet-class></servlet><servlet-mapping><servlet-name>BeerSelect</servlet-name><url-pattern>/SelectBeer.do</url-pattern></servlet-mapping><welcome-file-list><welcome-file>form.html</welcome-file></welcome-file-list></web-app>