第三讲 Servlet 编程.ppt

第三章 Servlet 编程 本章主要内容 Servlet 基础 Servlet 编程基本技能 Servlet 编程高级技能 Servlet Filter 编程 Servlet 基础√ Servlet 编程基本技能 Servlet 编程高级技能 Servlet Filter 编程 Servlet 最大的用途是通过动态响应客户机请求来扩展服务器功能! Servlet 基础 Servlet 编程基本技能√ Servlet 编程高级技能 Servlet Filter 编程 //login.html !DOCTYPE HTML PUBLIC -//w3c//dtd html 4.0 transitional//en html head meta http-equiv=Content-Type content=text/html; charset=gb2312 title提交表单数据/title /head body bgcolor=#FFFFFF h1 align=center b欢迎登录系统/b/h1 form action=getpostdata method =post p /p table width=52% border=2 align=center tr bgcolor=#FFFFCC td align=center width=43% div align=center用户名:/div/td td width=57% div align=left input type=text name=username /div/td /tr tr bgcolor=#CCFF99 td align=center width=43% div align=center密 码:/div/td td width=57% div align=left input type=password name=password /div/td /tr /table p align=center input type=reset name=Reset value=重置 input type=submit name=Submit2 value=提交 /p /form /body /html package com.servlet; 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 getpostdata extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //TODO Method stub generated by Lomboz //为解决编码问题后来添加 response.setContentType(text/html;charset=gb2312); request.setCharacterEncoding(gb2312);//解决编码问题 PrintWriter out = response.getWriter(); out.println( //a tools method to show the html code with title BODY BGCOLOR=\#FDF5E6\\n + H1 ALIGN=CENTER + get post data + /H1\n + UL\n + LIBusername/B: + request.getParameter(username) + \n + LIBpassword/B: + request.getParameter(password) + \n + /UL\n + /BODY/H