JSP第十二周
1.实现 删除 回复邮件
2.实现阅读邮件功能：在main.jsp中点击任意邮件的标题，进入到detail.jsp显示邮件详情，包括发件人，主题，内容，时间。同时需要把邮件状态修改为已读。
package com.gd.dao; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; import java.sql.ResultSet; public class BaseDao { //获取连接 protected Connection getConnection(){ Connection conn=null; try{ Class.forName("com.mysql.jdbc.Driver"); conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","lin0520..."); }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 com.gd.dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.Date; import java.util.List; import com.gd.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1(未读)，时间为系统当前时间) public void addMsg(msg m){ Connection conn=getConnection(); String sql="insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,1,?,?)"; PreparedStatement ps=null; try { ps=conn.prepareStatement(sql); ps.setString(1, m.getUsername()); ps.setString(2, m.getTitle()); ps.setString(3, m.getMsgcontent()); ps.setString(4, m.getSendto()); ps.setDate(5, new java.sql.Date(new Date().getTime())); ps.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ closeAll(conn, ps, null); } } public static void main(String[] args) { msgDao md=new msgDao(); md.delMsg(4); } //根据id删除邮件 public void delMsg(int id){ Connection con=getConnection(); String sql="delete from msg where msgid="+id; PreparedStatement ps=null; try { ps=con.prepareStatement(sql); ps.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ closeAll(con, ps, null); } } //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 sendto=?"; 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; } }
package com.gd.dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import com.gd.entity.users; public class usersDao extends BaseDao{ //关于用户的增删改查 public boolean denglu(String uname,String upwd){ boolean f=false; Connection conn=getConnection(); String sql=" select * from users where unmae=? 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: handle exception e.printStackTrace(); } finally{ closeAll(conn,ps,rs); } return f; } public void addUser(users u){ } }
package com.gd.entity; 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; 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; } }
package com.gd.entity; 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; } }
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <script type="text/javascript"> function validate(){ if(loginForm.uname.value==""){ alert("账号不能为空!"); return; } if(loginForm.upwd.value==""){ alert("密码不能为空!"); return; } loginForm.submit(); } </script> <form name="loginForm" action="dologin.jsp" method="post"> 用户名:<input type="text" name="uname" value="zs"><br> 密码: <input type="password" name="upwd" value="zs"> <input type="button" value="登录" onClick="validate()"> </form> <a href="reg.jsp">立即注册</a> </body> </html>
<%@page import="com.gd.dao.msgDao"%> <%@page import="com.gd.dao.usersDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% request.setCharacterEncoding("utf-8"); String uname = request.getParameter("uname"); String upwd = request.getParameter("upwd"); usersDao ud=new usersDao(); usgDao md=new usgDao(); if(ud.login(uname, upwd)){ session.setAttribute("uname", uname); request.getRequestDispatcher("main.jsp").forward(request, response); }else{ out.print("登陆失败，即将跳回登陆页....."); response.setHeader("refresh", "5;url=denglu.jsp"); } %>
<%@page import="com.gd.entity.msg"%> <%@page import="com.gd.dao.msgDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <% msgDao md=new msgDao(); String uname=(String)session.getAttribute("uname"); List<msg> list=md.getMailByReceiver(uname); %> 欢迎你<%=uname %> <a href="write.jsp">写邮件</a> <table border="1"> <tr> <td>发件人</td><td>主题</td><td>状态</td><td>时间</td> <td>操作</td><td>操作</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()==1){ %> <img src="images/sms_unReaded.png"/> <%}else{ %> <img src="images/sms_readed.png"/> <%} %> </td> <td><%=list.get(i).getMsg_create_date() %></td> <td><a href="write.jsp?reply=<%=list.get(i).getUsername()%>">回复</a></td> <td><a href="del.jsp?id=<%=list.get(i).getMsgid()%>">删除</a></td> </tr> <%} %> </table> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <html> <head> <title>My JSP 'index.jsp' starting page</title> </head> <body> <form action="dowrite.jsp" method="post"> 收件人:<input type="text" name="sendto" value="<%=request.getParameter("reply") %>"><br> 主题: <input type="text" name="title" ><br> 内容 <textarea rows="6" cols="20" name="content"></textarea> <br> <input type="submit" value="发送"> </form> </body> </html>
<%@page import="com.gd.entity.msg"%> <%@page import="com.gd.dao.msgDao"%> <%@page import="com.gd.dao.usersDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% request.setCharacterEncoding("utf-8"); String uname=(String)session.getAttribute("uname");// 发件人在session中获取 String sendto=request.getParameter("sendto"); String title=request.getParameter("title"); String content=request.getParameter("content"); msg m=new msg(); m.setTitle(title); m.setMsgcontent(content); m.setUsername(uname); m.setSendto(sendto); msgDao md=new msgDao(); md.addMsg(m); out.print("发送成功，即将跳回首页....."); response.setHeader("refresh", "3;url=main.jsp"); %>
<%@page import="com.gd.entity.msg"%> <%@page import="com.gd.dao.msgDao"%> <%@page import="com.gd.dao.usersDao"%> <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% request.setCharacterEncoding("utf-8"); int id=Integer.parseInt(request.getParameter("id")); msgDao md=new msgDao(); md.delMsg(id); response.sendRedirect("main.jsp"); %>
