jsp第十一周作业
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)
BaseDao:
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package com.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/test", "root", "123456"); } 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(); } } } |
MsgDao:
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package com.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.Msg; public class MsgDao extends BaseDao{ //关于邮件的增删改查 //添加邮件(写邮件,回复邮件都调用,邮件状态为0,时间为系统当前时间) //根据id删除邮件 //根据id修改邮件状态(统一改成1) //根据收件人查看全部邮件 public List< Msg > getMailByReceiver(String name){ List< Msg > list=new ArrayList< Msg >(); Connection con=getConnection(); String sql="select * from msg where username=?"; PreparedStatement ps=null; ResultSet rs=null; try { ps = con.prepareStatement(sql); ps.setString(1, name); rs=ps.executeQuery(); while(rs.next()){ //每读取一行,创建一个msg对象,对象放到集合中 Msg m=new Msg(); m.setMsgid(rs.getInt(1)); m.setUsername(rs.getString(2)); m.setTitle(rs.getString(3)); m.setMsgcontent(rs.getString(4)); m.setState(rs.getInt(5)); m.setSendto(rs.getString(6)); m.setMsg_create_date(rs.getDate(7)); list.add(m); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ closeAll(con, ps, rs); } return list; } |
UsersDao:
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package com.dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class UsersDao extends BaseDao{ //关于用户的增删改查,用到什么功能鞋什么 //登陆 public boolean login(String name,String pwd){ boolean f=false; Connection conn=getConnection(); String sql="select * from users where uname=? and upwd=?"; PreparedStatement ps; try { ps = conn.prepareStatement(sql); ps.setString(1, name);//第一个?赋值为name ps.setString(2, pwd); ResultSet rs=ps.executeQuery(); if(rs.next())//查到结果了 f=true; closeAll(conn, ps, rs); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } return f; } //注册 public int logon(String uname, int upwd) { Connection conn = getConnection(); PreparedStatement ps = null; int r = -1; try { String sql = "insert into users(uname,upwd) values(?,?)"; // 2个占位符 // 4.执行SQL语句 ps = conn.prepareStatement(sql); ps.setString(1, uname); ps.setInt(2, upwd); r = ps.executeUpdate();// 增删改都用这个 } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { closeAll(conn, ps, null); } return r; } |
Msg.java:
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package com.dao; import java.util.Date; public class Msg { private int msgid; private String username; private String title; private String msgcontent; private int state; private String sendto; private Date msg_create_date; @Override public String toString() { return "Msg [msgid=" + msgid + ", username=" + username + ", title=" + title + ", msgcontent=" + msgcontent + ", state=" + state + ", sendto=" + sendto + ", msg_create_date=" + msg_create_date + "]"; } public int getMsgid() { return msgid; } public void setMsgid(int msgid) { this.msgid = msgid; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getMsgcontent() { return msgcontent; } public void setMsgcontent(String msgcontent) { this.msgcontent = msgcontent; } public int getState() { return state; } public void setState(int state) { this.state = state; } public String getSendto() { return sendto; } public void setSendto(String sendto) { this.sendto = sendto; } public Date getMsg_create_date() { return msg_create_date; } public void setMsg_create_date(Date msg_create_date) { this.msg_create_date = msg_create_date; } } |
Users:
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package com.dao; public class Users { int id; String uname; String upwd; public int getId() { return id; } public void setId(int id) { this.id = id; } 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; } }< br > |
login.jsp:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title >My JSP 'student.jsp' starting page</ title > </ head > <% %> < body > < form action="login_link.jsp"> 姓名:< input type="text" name="name" /> < br >密码:< input type="password" name="pwd" /> < br >< input type="submit" value="登录" /> </ form > < form action="logon.jsp"> < input type="submit" value="注册" /> </ form > </ body > </ html > |
link.jsp:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title ></ title > </ head > <%@ page import="dao.UsersDao"%> <% String name = request.getParameter("name"); String pwd = request.getParameter("pwd"); String uname = new String(name.getBytes("ISO-8859-1"), "utf-8"); try { UsersDao usersdao = new UsersDao(); if (usersdao.login(uname, pwd)) { String n = (String) session.getAttribute("uname"); if (n == null) { session.setAttribute("uname", name); } request.getRequestDispatcher("mail.jsp").forward(request, response); } else { out.println("登陆失败!"); out.println("3s后跳转到登录页面..."); response.setHeader("refresh", "3;url=login.jsp"); } } catch (Exception e) { out.println("异常!!"); out.println("3s后跳转到登录页面..."); response.setHeader("refresh", "3;url=login.jsp"); } %> < body > < a href="login.jsp">返回</ a > </ body > </ html > |
logon.jsp:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title ></ title > </ head > <% %> < body > < h3 >请输入信息来完成注册...</ h3 > < form action="logon_link.jsp"> 用户名:< input type="text" name="name" /> 密码:< input type="password" name="pwd" /> < input type="submit" value="注册" /> </ form > < a href="login.jsp">返回</ a > </ body > </ html > |
link:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title >My JSP 'slogon_link.jsp' starting page</ title > </ head > <%@ page import="dao.UsersDao"%> <% String name = request.getParameter("name"); String upwd = request.getParameter("pwd"); String uname=new String(name.getBytes("ISO-8859-1"),"utf-8"); int pwd = Integer.parseInt(upwd); UsersDao usersdao=new UsersDao(); if (usersdao.logon(uname, pwd) != -1) { out.println("注册成功!"); out.println("三秒后跳转到登录页..."); response.setHeader("refresh", "3;url=login.jsp"); } else { out.println("注册失败!"); out.println("三秒后跳转到登录页..."); response.setHeader("refresh", "3;url=login.jsp"); } %> < body > </ body > </ html > |
mail.jsp:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title ></ title > <%@ page import="dao.MsgDao"%> <%@ page import="entity.Msg"%> < style type="text/css"> table { border: 2px black solid; width: 550px; } </ style > </ head > < body > <% String name = (String) session.getAttribute("uname"); String uname = new String(name.getBytes("ISO-8859-1"), "utf-8"); %> <% out.println(uname); %>的邮箱: < br > <% MsgDao m = new MsgDao(); List< Msg > list = m.getMailByReceiver(uname); %> < table > < tr > < td >发件人</ td > < td >主题</ td > < td >状态</ td > < td >时间</ td > </ tr > <% for (int i = 0; i < list.size (); i++) { %> < tr > < td ><%=list.get(i).getUsername()%></ td > < td ><%=list.get(i).getTitle()%></ td > < td > <% if (list.get(i).getState() == 0) { %>< img src="image/weidu.png" /> <% } else { %> < img src="image/yidu.png" /> <% } %> </ td > < td ><%=list.get(i).getMsg_create_date()%></ td > <% } %> </ table > </ body > </ html > |
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)
BaseDao:
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package com.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/test", "root", "123456"); } 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(); } } } |
MsgDao:
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package com.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.Msg; public class MsgDao extends BaseDao{ //关于邮件的增删改查 //添加邮件(写邮件,回复邮件都调用,邮件状态为0,时间为系统当前时间) //根据id删除邮件 //根据id修改邮件状态(统一改成1) //根据收件人查看全部邮件 public List< Msg > getMailByReceiver(String name){ List< Msg > list=new ArrayList< Msg >(); Connection con=getConnection(); String sql="select * from msg where username=?"; PreparedStatement ps=null; ResultSet rs=null; try { ps = con.prepareStatement(sql); ps.setString(1, name); rs=ps.executeQuery(); while(rs.next()){ //每读取一行,创建一个msg对象,对象放到集合中 Msg m=new Msg(); m.setMsgid(rs.getInt(1)); m.setUsername(rs.getString(2)); m.setTitle(rs.getString(3)); m.setMsgcontent(rs.getString(4)); m.setState(rs.getInt(5)); m.setSendto(rs.getString(6)); m.setMsg_create_date(rs.getDate(7)); list.add(m); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ closeAll(con, ps, rs); } return list; } |
UsersDao:
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package com.dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class UsersDao extends BaseDao{ //关于用户的增删改查,用到什么功能鞋什么 //登陆 public boolean login(String name,String pwd){ boolean f=false; Connection conn=getConnection(); String sql="select * from users where uname=? and upwd=?"; PreparedStatement ps; try { ps = conn.prepareStatement(sql); ps.setString(1, name);//第一个?赋值为name ps.setString(2, pwd); ResultSet rs=ps.executeQuery(); if(rs.next())//查到结果了 f=true; closeAll(conn, ps, rs); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } return f; } //注册 public int logon(String uname, int upwd) { Connection conn = getConnection(); PreparedStatement ps = null; int r = -1; try { String sql = "insert into users(uname,upwd) values(?,?)"; // 2个占位符 // 4.执行SQL语句 ps = conn.prepareStatement(sql); ps.setString(1, uname); ps.setInt(2, upwd); r = ps.executeUpdate();// 增删改都用这个 } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { closeAll(conn, ps, null); } return r; } |
Msg.java:
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package com.dao; import java.util.Date; public class Msg { private int msgid; private String username; private String title; private String msgcontent; private int state; private String sendto; private Date msg_create_date; @Override public String toString() { return "Msg [msgid=" + msgid + ", username=" + username + ", title=" + title + ", msgcontent=" + msgcontent + ", state=" + state + ", sendto=" + sendto + ", msg_create_date=" + msg_create_date + "]"; } public int getMsgid() { return msgid; } public void setMsgid(int msgid) { this.msgid = msgid; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getMsgcontent() { return msgcontent; } public void setMsgcontent(String msgcontent) { this.msgcontent = msgcontent; } public int getState() { return state; } public void setState(int state) { this.state = state; } public String getSendto() { return sendto; } public void setSendto(String sendto) { this.sendto = sendto; } public Date getMsg_create_date() { return msg_create_date; } public void setMsg_create_date(Date msg_create_date) { this.msg_create_date = msg_create_date; } } |
Users:
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package com.dao; public class Users { int id; String uname; String upwd; public int getId() { return id; } public void setId(int id) { this.id = id; } 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; } }< br > |
login.jsp:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title >My JSP 'student.jsp' starting page</ title > </ head > <% %> < body > < form action="login_link.jsp"> 姓名:< input type="text" name="name" /> < br >密码:< input type="password" name="pwd" /> < br >< input type="submit" value="登录" /> </ form > < form action="logon.jsp"> < input type="submit" value="注册" /> </ form > </ body > </ html > |
link.jsp:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title ></ title > </ head > <%@ page import="dao.UsersDao"%> <% String name = request.getParameter("name"); String pwd = request.getParameter("pwd"); String uname = new String(name.getBytes("ISO-8859-1"), "utf-8"); try { UsersDao usersdao = new UsersDao(); if (usersdao.login(uname, pwd)) { String n = (String) session.getAttribute("uname"); if (n == null) { session.setAttribute("uname", name); } request.getRequestDispatcher("mail.jsp").forward(request, response); } else { out.println("登陆失败!"); out.println("3s后跳转到登录页面..."); response.setHeader("refresh", "3;url=login.jsp"); } } catch (Exception e) { out.println("异常!!"); out.println("3s后跳转到登录页面..."); response.setHeader("refresh", "3;url=login.jsp"); } %> < body > < a href="login.jsp">返回</ a > </ body > </ html > |
logon.jsp:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title ></ title > </ head > <% %> < body > < h3 >请输入信息来完成注册...</ h3 > < form action="logon_link.jsp"> 用户名:< input type="text" name="name" /> 密码:< input type="password" name="pwd" /> < input type="submit" value="注册" /> </ form > < a href="login.jsp">返回</ a > </ body > </ html > |
link:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title >My JSP 'slogon_link.jsp' starting page</ title > </ head > <%@ page import="dao.UsersDao"%> <% String name = request.getParameter("name"); String upwd = request.getParameter("pwd"); String uname=new String(name.getBytes("ISO-8859-1"),"utf-8"); int pwd = Integer.parseInt(upwd); UsersDao usersdao=new UsersDao(); if (usersdao.logon(uname, pwd) != -1) { out.println("注册成功!"); out.println("三秒后跳转到登录页..."); response.setHeader("refresh", "3;url=login.jsp"); } else { out.println("注册失败!"); out.println("三秒后跳转到登录页..."); response.setHeader("refresh", "3;url=login.jsp"); } %> < body > </ body > </ html > |
mail.jsp:
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<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> < html > < head > < title ></ title > <%@ page import="dao.MsgDao"%> <%@ page import="entity.Msg"%> < style type="text/css"> table { border: 2px black solid; width: 550px; } </ style > </ head > < body > <% String name = (String) session.getAttribute("uname"); String uname = new String(name.getBytes("ISO-8859-1"), "utf-8"); %> <% out.println(uname); %>的邮箱: < br > <% MsgDao m = new MsgDao(); List< Msg > list = m.getMailByReceiver(uname); %> < table > < tr > < td >发件人</ td > < td >主题</ td > < td >状态</ td > < td >时间</ td > </ tr > <% for (int i = 0; i < list.size (); i++) { %> < tr > < td ><%=list.get(i).getUsername()%></ td > < td ><%=list.get(i).getTitle()%></ td > < td > <% if (list.get(i).getState() == 0) { %>< img src="image/weidu.png" /> <% } else { %> < img src="image/yidu.png" /> <% } %> </ td > < td ><%=list.get(i).getMsg_create_date()%></ td > <% } %> </ table > </ body > </ html > |