来自Head First Servlet and JSP
XML语言: web.xml
<web-app xmlns=“http://java.sun.com/xml/ns/j2ee"
xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation=“http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version=“2.4”> –>
HTML语言: form.html
Beer Selection Page
Java语言: BeerSelect
package com.example.web;
import com.example.model.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class BeerSelect extends HttpServlet
{
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
{
// response.setContentType(“text/html”);
// PrintWriter out = response.getWriter();
// out.println(“Beer Selection Advice
”);
String c = request.getParameter(“color”);
// out.println("
Got beer color " + c);
BeerExpert be = new BeerExpert();
List result = be.getBrands(c);
// Iterator it = result.iterator();
// while (it.hasNext())
// {
// out.print("
try: " + it.next());
// }
request.setAttribute(“styles”, result);
RequestDispatcher view = request.getRequestDispatcher(“result.jsp”);
view.forward(request, response);
}
}
Java语言: BeerExpert
package com.example.model;
import java.util.*;
public class BeerExpert
{
public List getBrands (String color)
{
List brands = new ArrayList();
if (color.equals(“amber”))
{
brands.add(“Jack Amber”);
brands.add(“Red Moose”);
}
else
{
brands.add(“Jail Pale Ale”);
brands.add(“Gout Stout”);
}
return brands;
}
}
Java Server Page语言: result.jsp
<%@ page import=“java.util.*”%>
Beer Recommendations JSP
<%
List sytles = (List)request.getAttribute(“styles”);
Iterator it = sytles.iterator();
while (it.hasNext())
{
out.print("
try: " + it.next());
}
%>
原文链接: Servlet JSP 的 Java类的最简单MVC模型 | Log4D
3a1ff193cee606bd1e2ea554a16353ee
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