servlet sample
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一个很简单的servlet例子，一个login画面，提交后进入欢迎界面。
index.jsp:
<%@ page language="java" contentType="text/html; charset=windows-31j"
pageEncoding="windows-31j"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-31j">
<title>Insert title here</title>
</head>
<body>
<center>
<h1>ログイン</h1>
<form method="POST" action="login.cgi">
<table border="0">
<tr>
<td>ユーザID</td>
<td><input type="text" name="userId"></td>
</tr>
<tr>
<td>パスワード</td>
<td><input type="password" name="password"></td>
</tr>
</table>
<p><input type="submit" value="ログイン" name="login">
<input type="reset" value="リセット" name="reset"></p>
</form>
</center>
</body>
</html>
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" 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/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>
myApp</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>login.cgi</servlet-name>
<servlet-class>
sources.LoginServlet
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>login.cgi</servlet-name>
<url-pattern>*.cgi</url-pattern>
</servlet-mapping>
</web-app>
loginservlet:
/**
*
*/
package sources;
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;
/**
* @author liusk
*
*/
public class LoginServlet extends HttpServlet{
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("Windows-31J");
String userid = request.getParameter("userId");
response.setContentType("text/html; charset=Windows-31J");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<body>");
out.println("<h1>welcome " + userid + "</h1>");
out.println("</body>");
out.println("</html>");
out.close();
}
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