JSP十二周作业
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.fj.Dao; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class BaseDao { protected Connection getConnection() { Connection con = null; try { Class.forName("com.mysql.jdbc.Driver"); con = DriverManager.getConnection( "jdbc:mysql://localhost:3306/test", "root", "123456"); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return con; } 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) { // TODO Auto-generated catch block e.printStackTrace(); } } }
package com.fj.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.fj.entity.Msg; public class MsgDao extends BaseDao { public void addMsg(Msg m) { Connection con = getConnection(); String sql = "insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,?,?,?)"; PreparedStatement ps = null; try { ps = con.prepareStatement(sql); ps.setString(1, m.getUsername()); ps.setString(2, m.getTitle()); ps.setString(3, m.getMsgcontent()); ps.setInt(4, 1); ps.setString(5, m.getSendto()); ps.setDate(6, new java.sql.Date(new Date().getTime())); ps.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { closeAll(con, ps, null); } } public void delMail(int id) { Connection conn = getConnection(); String sql = "delete from msg where msgid=?"; PreparedStatement ps = null; try { ps = conn.prepareStatement(sql); ps.setInt(1, id); ps.executeUpdate(); } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ closeAll(conn, ps, null); } } //(测试删除邮件的代码是否编写成功) // public static void main(String[] args) { // MsgDao md=new MsgDao(); // md.delMail(3); //} public void update(int id) { Connection con = getConnection(); String sql = "update msg set state='1' where msgid=?"; PreparedStatement ps = null; try { ps = con.prepareStatement(sql); ps.setInt(1, id); ps.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } finally { closeAll(con, ps, null); } } 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()) { Msg m = new Msg(); m.setMsgid(rs.getInt("msgid")); m.setUsername(rs.getString("username")); m.setTitle(rs.getString("title")); m.setMsgcontent(rs.getString("msgcontent")); m.setState(rs.getInt("state")); m.setSendto(rs.getString("sendto")); m.setMsg_create_date(rs.getDate("msg_create_date")); list.add(m); } } catch (SQLException e) { e.printStackTrace(); }finally{ closeAll(con, ps, rs); } return list; } public Msg read(int id) { Connection con = getConnection(); String sql = "select msgid,username,sendto,title,msgcontent,msg_create_date from msg where msgid=?"; PreparedStatement ps = null; ResultSet rs = null; try { ps = con.prepareStatement(sql); ps.setInt(1, id); rs = ps.executeQuery(); while (rs.next()) { Msg m = new Msg(); m.setMsgid(rs.getInt("msgid")); m.setUsername(rs.getString("username")); m.setTitle(rs.getString("title")); m.setMsgcontent(rs.getString("msgcontent")); m.setSendto(rs.getString("sendto")); m.setMsg_create_date(rs.getDate("msg_create_date")); return m; } } catch (SQLException e) { e.printStackTrace(); } finally { closeAll(con, ps, rs); } return null; } }
package com.fj.Dao; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; public class UsersDao extends BaseDao { public boolean login(String uname, String upwd) { boolean f = false; Connection con = getConnection(); String sql = "select * from users where uname=? and upwd=?"; PreparedStatement ps = null; ResultSet rs = null; try { ps = con.prepareStatement(sql); ps.setString(1, uname); ps.setString(2, upwd); rs = ps.executeQuery(); if (rs.next()) f = true; } catch (SQLException e) { e.printStackTrace(); } finally { closeAll(con, ps, rs); } return f; } public int register(String uname, String upwd) { Connection con = getConnection(); PreparedStatement ps = null; int x = 0; try { String sql = "insert into users(uname,upwd) values(?,?)"; ps = con.prepareStatement(sql); ps.setString(1, uname); ps.setString(2, upwd); x = ps.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } finally { closeAll(con, ps, null); } return x; } }
package com.fj.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; 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; } public Msg(int msgid, String username, String title, String msgcontent, int state, String sendto, Date msg_create_date) { super(); this.msgid = msgid; this.username = username; this.title = title; this.msgcontent = msgcontent; this.state = state; this.sendto = sendto; this.msg_create_date = msg_create_date; } public Msg() { super(); } @Override public String toString() { return "Msg [msgid=" + msgid + ", username=" + username + ", sendto=" + sendto + ", title=" + title + ", msg_create_date=" + msg_create_date + ", state=" + state + ", msgcontent=" + msgcontent + "]"; } }
package com.fj.entity; public class Users { private int id; private String uname; private 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; } }
<body> <script type="text/javascript"> function validate() { if (registerForm.uname.value == "") { alert("账号不能为空！"); return; } if (registerForm.upwd.value == "") { alert("密码不能为空！"); return; } registerForm.submit(); } </script> <form name="registerForm" action="doreg.jsp" method="post"> 用户名:<input type="text" name="uname"><br> 密 码: <input type="password" name="upwd"><br> <input type="submit" value="注册"><hr> </form><hr> <a href="login.jsp">返回登录</a> </body>
<body>
<%
request.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
String upwd = request.getParameter("upwd");
UsersDao ud = new UsersDao();
MsgDao md = new MsgDao();
if (ud.register(uname, upwd) > 0) {
session.setAttribute("uname", uname);
request.getRequestDispatcher("login.jsp").forward(request,
response);
} else {
out.print("注册失败，请重新注册.......");
response.setHeader("refresh", "3;url=reg.jsp");
}
%>
</body>
<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" ><br>
密 码：<input type="password" name="upwd" ><br>
<input type="button" value="登录" onClick="validate()">
</form>
<hr>
<a href="reg.jsp">返回注册</a>
</body>
<body>
<%
request.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
String upwd = request.getParameter("upwd");
UsersDao ud = new UsersDao();
if (ud.login(uname, upwd)) {
session.setAttribute("uname",uname);
request.getRequestDispatcher("main.jsp").forward(
request,response);
} else {
out.print("登录失败，即将跳回登录页......");
response.setHeader("refresh", "3;url=login.jsp");
}
%>
</body>
<body>
<form action="dowrite.jsp" method="post">
收件人:<input type="text" name="receiver"
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"> <br> <a
href="main.jsp">返回</a>
</form>
</body>
<body>
<%
request.setCharacterEncoding("utf-8");
String uname = (String) session.getAttribute("uname");
String sendto = request.getParameter("receiver");
String title = request.getParameter("title");
String content = request.getParameter("content");
Msg m = new Msg();
m.setMsgcontent(content);
m.setUsername(uname);
m.setSendto(sendto);
m.setTitle(title);
MsgDao md = new MsgDao();
md.addMsg(m);
out.print("发送成功.....");
response.setHeader("refresh", "3;url=main.jsp");
%>
</body>
<body>
<%
String uname = (String) session.getAttribute("uname");
%>
欢迎你<%
out.print(uname);
%>使用邮箱
<hr>
<a href="write.jsp">写邮件</a>
<table border="1">
<tr>
<td>发件人</td>
<td>标题</td>
<td>状态</td>
<td>时间</td>
<td>操作</td>
<td>操作</td>
<%
MsgDao md = new MsgDao();
List<Msg> list = md.getMailByReceiver(uname);
for (int i = 0; i < list.size(); i++) {
%>
<tr>
<td><%=list.get(i).getUsername()%></td>
<td><a href="detail.jsp?id=<%=list.get(i).getMsgid()%>"><%=list.get(i).getMsgcontent() %></a>
</td>
<td>
<%
if (list.get(i).getState() == 1) {
%> <img src="image/no.png"/>
<%
} else {
%><img src="image/yes.png"/> <%
}
%>
</td>
<td><%=list.get(i).getMsg_create_date()%></td>
<td><a href="delete.jsp?id=<%=list.get(i).getMsgid()%>">删除</a>
</td>
<td><a href="write.jsp?reply=<%=list.get(i).getUsername()%>">回复</a>
</td>
</tr>
<%
}
%>
</table>
</body>
<body>
<%
request.setCharacterEncoding("utf-8");
int id = Integer.parseInt(request.getParameter("id"));
MsgDao md = new MsgDao();
md.delMail(id);
out.print("刪除成功......");
response.setHeader("refresh", "3;url=main.jsp");
//response.sendRedirect("main.jsp");
%>
</body>
<body>
<body>
<%
request.setCharacterEncoding("utf-8");
String msgid = request.getParameter("id");
int idd = Integer.parseInt(msgid);
MsgDao md = new MsgDao();
md.update(idd);
Msg m =md.read(idd);
%>
<table>
<tr>
<td>发件人:</td>
<td><input type="text" name="username" style="border: none"
value="<%=m.getUsername()%>">
</td>
</tr>
<tr>
<td>主题:</td>
<td><input type="text" name="title" style="border: none"
value="<%=m.getTitle()%>">
</td>
</tr>
<tr>
<td>时间:</td>
<td><input type="text" name="msg_create_date" style="border: none"
value="<%=m.getMsg_create_date()%>">
</td>
</tr>
<tr>
<td>收件人:</td>
<td><input type="text" name="sendto" style="border: none"
value="<%=m.getSendto()%>">
</td>
</tr>
<tr>
<td>内容:</td>
<td><div style="border: none;outline: none;overflow: inherit;">
<%=m.getMsgcontent()%></div>
</td>
</tr>
</table>
<br>
<a href="main.jsp">返回</a>
</body>
</body>
