JSP第九次上机作业
1.建库，建表2个
用户表（id,用户名，密码）
邮件表（id,发件人，收件人，标题，内容，发送时间，状态）
2.建model层
dao包
package dao; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class BaseDao { //获取连接 protected Connection getConnection(){ Connection conn=null; try { Class.forName("com.mysql.jdbc.Driver"); // 2.建立连接 conn = DriverManager.getConnection( "jdbc:mysql://localhost:3306/emails", "root", "001010Chen"); } catch (Exception e) { e.printStackTrace(); } return conn; } //关闭连接 protected void closeAll(Connection con,PreparedStatement ps,ResultSet rs){ try { if(rs != null) rs.close(); if(ps != null) ps.close(); if(con != null) con.close(); } catch (SQLException e) { e.printStackTrace(); } } }
package dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class UserDao extends BaseDao { //用户登录验证 public boolean login(String uname, String upwd) { boolean f = false; Connection conn = getConnection(); String sql = "select * from emailuser where uname=? and upwd=?"; PreparedStatement ps = null; ResultSet rs = null; try { ps = conn.prepareStatement(sql); ps.setString(1, uname); ps.setString(2, upwd); rs = ps.executeQuery(); if (rs.next()) f = true; } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { closeAll(conn, ps, rs); } return f; } //用户注册信息保存到数据库 public void reg(String uname, String upwd) { Connection conn = getConnection(); PreparedStatement ps = null; try { String sql = "insert into emailuser(uname,upwd) values(?,?)"; // 2个占位符 // 4.执行SQL语句 ps = conn.prepareStatement(sql); ps.setString(1, uname); ps.setString(2, upwd); ps.executeUpdate();// 增删改都用这个 } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { closeAll(conn, ps, null); } } }
package dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import entity.email; public class EmlDao extends BaseDao{ //插入邮件 //删除邮件 //修改邮件状态 //按照接收者查询全部邮件 public List<email> getEmailByAddressee(String uname){ List<email> list=new ArrayList<email>(); Connection conn=getConnection(); String sql="select * from email where addresseename=?"; PreparedStatement ps=null; ResultSet rs=null; try { ps = conn.prepareStatement(sql); ps.setString(1, uname); rs=ps.executeQuery(); while(rs.next()){ email m=new email(); m.setEid(rs.getInt(1)); m.setSendername(rs.getString(2)); m.setTitle(rs.getString(3)); m.setContent(rs.getString(4)); m.setAddresseename(rs.getString(5)); m.setTotime(rs.getDate(6)); m.setState(rs.getInt(7)); list.add(m); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ closeAll(conn, ps, rs); } return list; } }
entity包
package entity; public class emailuser { int uid; String uname; String upwd; public int getId() { return uid; } public void setId(int uid) { this.uid = uid; } public String getUname() { return uname; } public void setUname(String uname) { this.uname = uname; } public String getUpwd() { return upwd; } public void setUpwd(String upwd) { this.upwd = upwd; } }
package entity; import java.util.Date; public class email { private int eid; private String sendername; private String addresseename; private String title; private String content; Date totime; private int state; public int getEid() { return eid; } public void setEid(int eid) { this.eid = eid; } public String getSendername() { return sendername; } public void setSendername(String sendername) { this.sendername = sendername; } public String getAddresseename() { return addresseename; } public void setAddresseename(String addresseename) { this.addresseename = addresseename; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public Date getTotime() { return totime; } public void setTotime(Date totime) { this.totime = totime; } public int getState() { return state; } public void setState(int state) { this.state = state; } }
3.登陆，注册，登陆后显示全部邮件
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>登录页面</title> <script type="text/javascript"> function check() { if (loginForm.uname.value == "") { alert("请输入账号!"); return; } else if (loginForm.upwd.value == "") { alert("请输入密码!"); return; } loginForm.submit(); } </script> </head> <body> <form name="loginForm" action="dologin.jsp" method="post"> 用户：<input type="text" name="uname"><br> 密码：<input type="password" name="upwd"><br> <input type="button" value="登录" onClick="check()"> <a href="reg.jsp">立即注册账户</a> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>注册页面</title> </head> <body> <form name="regForm" action="doreg.jsp" method="post"> 用户：<input type="text" name="uname"><br> 密码：<input type="password" name="upwd"><br> 确认密码：<input type="password" name="upwd1"><br> <input type="submit" value="注册" > <a href="login.jsp">已有账号?前往登录</a> </form> </body> </html>
<%@page import="dao.UserDao"%> <%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <html> <head> <title>判断</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); UserDao ud = new UserDao(); if (ud.login(uname, upwd)) { %> <script type="text/javascript"> alert("登录成功！"); </script> <% session.setAttribute("uname", uname); request.getRequestDispatcher("main.jsp").forward(request, response); } else { %> <script type="text/javascript"> alert("登录失败,3秒后返回登录界面"); </script> <% response.setHeader("refresh", "3;url=login.jsp"); } %> </body> </html>
<%@page import="dao.UserDao"%> <%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>获取</title> </head> <body> <% String uname=request.getParameter("uname"); String upwd=request.getParameter("upwd"); String upwd1=request.getParameter("upwd1"); if (upwd.equals(upwd1)) { UserDao sd = new UserDao(); sd.reg(uname, upwd); %> <script type="text/javascript">alert("注册成功！");</script> <% request.getRequestDispatcher("login.jsp").forward(request,response); } else { %> <script type="text/javascript">alert("注册失败，请重试！");</script> <% request.getRequestDispatcher("reg.jsp").forward(request,response); } %> </body> </html>
<%@page import="entity.email"%> <%@page import="dao.EmlDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>主界面</title> </head> <body> <% String uname = (String) session.getAttribute("uname"); %> 首页！！欢迎你<%=uname%><br> <table border="1"> <tr> <th id="tom">发件人</th> <th id="tom">主题</th> <th id="tom">状态</th> <th id="tom">时间</th> <% EmlDao md = new EmlDao(); List<email> list = md.getEmailByAddressee(uname); for (int i = 0; i < list.size(); i++) { out.print("<tr>"); out.print("<td id=tom>" + list.get(i).getSendername() + "</td>"); out.print("<td id=tom>" + list.get(i).getTitle() + "</td>"); out.print("<td id=tom>" + list.get(i).getState() + "</td>"); out.print("<td id=tom>" + list.get(i).getTotime() + "</td>"); out.print("</tr>"); } %> </table> <a id=tom href="writ.jsp">写邮件</a> <a id=tom href="delete.jsp">删除邮件</a> </body> </html>
结果截图：
