标签：第十二 msgid pred rest sql msg conn
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.nn.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 javax.annotation.PreDestroy;
import com.nn.entity.msg;
import com.sun.org.apache.regexp.internal.recompile;
public class msgDao extends BaseDao{
public List<msg> listAll(String sendto) throws SQLException{
List<msg> list =new ArrayList<msg>();
Connection conn =getConnection();
String sql="select * from msg where sendto=?";
PreparedStatement pred =null;
ResultSet rest=null;
try {
pred=conn.prepareStatement(sql);
pred.setString(1, sendto);
rest=pred.executeQuery();
while (rest.next()) {
msg msg=new msg();
msg.setMsgid(rest.getInt("msgid"));
msg.setUsername(rest.getString("username"));
msg.setTitle(rest.getString("title"));
msg.setMsgcontent(rest.getString("msgcontent"));
msg.setState(rest.getInt("state"));
msg.setSendto(rest.getString("sendto"));
msg.setMsg_create_date(rest.getDate("msg_create_date"));
list.add(msg);
}
} catch (Exception e) {
// TODO: handle exception
}
finally{
closeAll(conn, pred, rest);
}
return list;
}
public void changestate(Integer msgid){
Connection conn =getConnection();
String sql="update msg set state=1 where msgid=?";
PreparedStatement pred=null;
try {
pred =conn.prepareStatement(sql);
pred.setInt(1, msgid);
pred.executeUpdate();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally{
closeAll(conn, pred, null);
}
}
public List<msg> showContent(Integer msgid) {
List<msg> list=new ArrayList<msg>();
Connection conn=getConnection();
String sql="select * from msg where msgid=?";
PreparedStatement pred=null;
ResultSet rest=null;
try {
pred = conn.prepareStatement(sql);
pred.setInt(1, msgid);
rest =pred.executeQuery();
while(rest.next()){
msg msg =new msg();
msg.setUsername(rest.getString("username"));
msg.setTitle(rest.getString("title"));
msg.setMsgcontent(rest.getString("msgcontent"));
msg.setMsg_create_date(rest.getDate("msg_create_date"));
list.add(msg);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally{
closeAll(conn, pred, rest);
}
return list;
}
public void delmsg(Integer msgid){
Connection conn =getConnection();
String sql="delete from msg where msgid=?";
PreparedStatement pred=null;
try {
pred =conn.prepareStatement(sql);
pred.setInt(1, msgid);
pred.executeUpdate();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally{
closeAll(conn, pred, null);
}
}
public void send(msg msg){
Connection conn=getConnection();
String sql="insert into msg(username,title,msgcontent,state,sendto,msg_create_date) values(?,?,?,0,?,?)";
PreparedStatement ps=null;
try {
ps=conn.prepareStatement(sql);
ps.setString(1, msg.getUsername());
ps.setString(2, msg.getTitle());
ps.setString(3, msg.getMsgcontent());
ps.setString(4, msg.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);
}
}
}
<%@page import="com.nn.entity.msg"%>
<%@page import="com.nn.Dao.msgDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<%
String magid =request.getParameter("msgid");
Integer msgid =Integer.parseInt(magid);
msgDao msgDao =new msgDao();
msgDao.changestate(msgid);
msg msg=new msg();
List<msg> list =new ArrayList<msg>();
list=msgDao.showContent(msgid);
%>
<table width="600px" border="2px solid red">
<tr>
<th>发件人</th><th>标题</th><th>内容</th><th>发送时间</th>
</tr>
<%
for(msg msg1:list){
%>
<tr>
<td><%out.print(msg1.getUsername()); %></td>
<td><%out.print(msg1.getTitle()); %></td>
<td><%out.print(msg1.getMsgcontent()); %></td>
<td><%out.print(msg1.getMsg_create_date()); %></td>
</tr>
<%} %>
</table>
<a href="zhuye.jsp">继续浏览</a>
</body>
</html>
<%@page import="com.nn.entity.msg"%>
<%@page import="com.nn.Dao.msgDao"%>
<%@page import="sun.security.jgss.LoginConfigImpl"%>
<%@page import="com.nn.Dao.usersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<%
String msgid1=request.getParameter("msgid");
Integer msgid=Integer.parseInt(msgid1);
msgDao msgDao =new msgDao();
msgDao.delmsg(msgid);
response.sendRedirect("zhuye.jsp");
%>
</body>
</html>
<%@page import="java.util.List"%>
<%@page import="com.nn.Dao.msgDao"%>
<%@page import="com.nn.entity.msg"%>
<%@page import="sun.security.jgss.LoginConfigImpl"%>
<%@page import="com.nn.Dao.usersDao"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<%
String uname=(String)session.getAttribute("uname");
if(uname==null){
out.print("您未登录，即将跳回登陆页.....");
response.setHeader("refresh", "5;url=login.jsp");
}else{
%>
欢迎你<%=uname %>
<a href="loginout.jsp">退出登陆</a><br>
<%
msg msg=new msg();
msgDao msgDao =new msgDao();
List<msg> list =new ArrayList<msg>();
list=msgDao.listAll(uname);
%>
邮件列表:
<table width="600px" border="2px solid red">
<%if(list.size()==0){
out.print("你没有邮件");
}else{ %>
<tr>
<th>id</th><th>发件人</th><th>标题</th><th>已读未读状态</th><th>收件人</th><th>发送时间</th><th colspan="2">操作</th>
</tr>
<%
for(msg msg1:list){
%>
<tr>
<td><%out.print(msg1.getMsgid()); %></td>
<td><%out.print(msg1.getUsername()); %></td>
<td><a href="domsgcontent.jsp?msgid=<%=msg1.getMsgid()%>"><%out.print(msg1.getTitle()); %></a></td>
<td><%out.print(msg1.getState()); %></td>
<td><%out.print(msg1.getSendto()); %></td>
<td><%out.print(msg1.getMsg_create_date()); %></td>
<td><a href="delmsg.jsp?msgid=<%=msg1.getMsgid()%>">删除</a></td>
<td><a href="send.jsp?username=<%=msg1.getUsername()%>">回复</a></td>
</tr>
<%}}} %>
</table>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<body>
<script type="text/javascript">
function dologin(){
if(loginform.sendto.value==""){
alert("没有输入收件人");
return;
}
if(loginform.title.value==""){
alert("没有输入标题");
return;
}
if(loginform.content.value==""){
alert("没有输入内容");
return;
}
loginform.submit();
}
</script>
<form name="loginform" action="dosend.jsp" method="post">
收件人:<input type="text" name="sendto" value="<%=request.getParameter("username") %>"><br>
主题: <input type="text" name="title" ><br>
内容 :<br><textarea rows="6" cols="50" name="content"></textarea>
<br>
<input type="submit" value="发送" onclick="dologin()">
</form>
</body>
</html>
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标签：第十二,msgid,pred,rest,sql,msg,conn 来源： https://www.cnblogs.com/nnnn0508/p/16283681.html
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