MVC(JSP+JavaBean+Servlet)实例功能.doc

此文档收集于网络，如有侵权，请联系网站删除内容提要：MVC(JSP+JavaBean+Servlet)实例功能：客户在登陆页面Login.html输入用户名和密码，提交表单，由Servlet（LoginValidate.java）调用JavaBean(LoginDBO.java)验证用户名和密码，最后调用视图returnMessage.jspMVC(JSP+JavaBean+Servlet)实例功能：客户在登陆页面Login.html输入用户名和密码，提交表单，由Servlet（LoginValidate.java）调用JavaBean(LoginDBO.java)验证用户名和密码，最后调用视图returnMessage.jsp显示，如果成功显示成功信息，不成功显示失败信息。 MVC(JSP+JavaBean+Servlet)实例开发步骤：1、创建数据库（MySQL）：mvc_user 1、创建表，表名为user_info。表结构如下： 2、向user_info表中增加一条数据，如下：2、使用MyEclipse：创建一个web project。输入工程名：MyMVC，其他默认。点击Finish。3、引入一个MySql数据库的连接驱动包：点击ok，完成引入包的动作。4、在WebRoot文件夹中新建两个页面：login.html和returnMessage.jsp。login.html页面代码： 登陆页面中国网页设计 用户名： 密码： returnMessage.jsp MVC(JSP+JavaBean+Servlet)入门实例-中国网页设计 5、在src文件夹中新建一个java包，名为myServlet点击Finish完成创建。3、在myServlet包中新建两个Java文件：LoginValidate.java和LoginDBO.javaLoginValidate.java是一个Servlet，所以必须继承HttpServlet:重写父类的doGet()和doPost()方法。选择doGet()和doPost()方法，点击ok。LoginValidate.java代码如下：package myServlet;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 LoginValidate extends HttpServlet public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException String name=request.getParameter(username);String password=request.getParameter(password);LoginDBO loginDBO=new LoginDBO();String message =loginDBO.login(name, password);String url=returnMessage.jsp?message=+message;url=new String(url.getBytes(GBK),ISO8859_1); response.sendRedirect(url);public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException this.doGet(request, response);4、同样在myServlet包中新建一个LoginDBO.java。用来进行对数据库的操作.代码如下：package myServlet;import java.sql.*;public class LoginDBO Connection conn;Statement stmt;public LoginDBO()tryClass.forName(com.mysql.jdbc.Driver);conn=DriverManager.getConnection(jdbc:mysql:/localhost:3306/mvc_user,root,123);stmt=conn.createStatement();catch(Exception e)e.printStackTrace();publicString login(String name, String password)String message=123;tryString sql1=select count(0) from user_info where user_name=+name+;ResultSet rs1=stmt.executeQuery(sql1);if(rs1.next()int userCount=rs1.getInt(1);if(0=userCount)message=不存在该用户;return message;String sql2=select count(0) from user_info where user_name=+name+and password=+password+;ResultSet rs2=stmt.executeQuery(sql2);if(rs2.next()int trueUserCount=rs2.getInt(1);if(0=trueUserCount)message=密码错误;return message;message=成功!;catch(Exception e)e.printStackTrace();return message;5、最后配置web.xml文件，并发布项目，启动Tomcat，即可访问页面 Login myServlet.LoginValidate login /login.do name:myeclipse8.5 code:zLR8ZC-855550-68567156703100078 name:52accptech code:0LR8ZC-855550-68567157524981450 name:bingchuan code:oLR8ZC-855550-68567157669572882 MyEclipse Blue Edition Version: 6.5.0.Blue Milestone-1 注册码:现在为懒人提供一个:) name: steven key: fLR8ZO-655444-676786523523712如果你是一个勤奋的人 则用java编译器编译: import java.text.DecimalFormat;import java.text.NumberFormat;import java.text.SimpleDateFormat;import java.util.Calendar;/* myeclipse blue 7.5 keygen* author Administrator*/public class Crack public static final void main(String args) String id = steven; / 可更给为您的名字String num = 999;/ 许可证数量System.out.println(getSerial(id, 100, num, false);public static String getSerial(String userId, String version,String licenseNum, boolean selected) Calendar cal = Calendar.getInstance();cal.add(1, 3);cal.add(6, -1);NumberFormat nf = new DecimalFormat(000);licenseNum = nf.format(Integer.valueOf(licenseNum);String verTime = selected ? (new StringBuffer(-).append(new SimpleDateFormat(yyMMdd).format(cal.getTime().append(0).toString() : -1012310;String type = YE3MB-;String need = (new StringBuffer(String.valueOf(userId.substring(0, 1).append(type).append(version).append(licenseNum).append(verTime).toString();String dx = (new StringBuffer(String.valueOf(need).append(Decompiling this copyrighted software is a violation of both your license agreement and the Digital Millenium Copyright Act of 1998 (/copyright/legislation/dmca.pdf). Under section 1204 of the DMCA, penalties range up to a $500,000 fine or up to five years imprisonment for a first offense. Think about it; pay for a license, avoid prosecution, and feel better about yourself.).append(userId).toString();int suf = decode(dx);String code = (new StringBuffer(String.valueOf(need).append(String.valueOf(suf).toString();return change(code);private static int decode(String s) int i = 0;char ac = s.toCharArray();int j = 0;for (int k = ac.length; j k; j+)i = 31 * i + acj;return Math.abs(i);pri