第十三次 作业

<%@ 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 action="logServlet">
用户名:<input type="text" name="uname" /> 密码:<input type="password"
name="upwd" /><input type="submit" value="登录" />
</form>
<form action="register.jsp">
<br> 没有账号需要注册?<input type="submit" value="注册" />
</form>
</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@page import="com.bk.dog.MailDao"%>
<%@page import="com.bk.e.Mail" %>
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
MailDao md=new MailDao();
String uname=(String)session.getAttribute("uname");
List<Mail> list=md.getMailByReceiver(uname);
%>
欢迎你 <% out.print(uname); %><a href="write.jsp">写邮件</a>
<table height="20px" width="100%" align="center" border="1">
<tr>
<td>发件人</td>
<td>主题</td>
<td>状态</td>
<td>时间</td>
<td>回复</td>
<td>删除</td>
</tr>
<%
for(int i=0;i<list.size();i++){%>

<tr>
<td><%=list.get(i).getUsername()%></td>
<td><a href="read.jsp?id=<%=list.get(i).getMsgid()%>"><%=list.get(i).getTitle()%></a></td>
<td><%if(list.get(i).getState()==1){
out.println("w");
%>
<%}else{
out.println("y");
%>
<%} %>
</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="deltServlet?id=<%=list.get(i).getMsgid()%>">删除</a></td>
</tr>
<%} %>
</table>
</body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="com.bk.dog.MailDao" %>
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<%
String Id = request.getParameter("id");
int msgid = Integer.parseInt(Id);
MailDao md = new MailDao();
md.chaK(msgid);
out.println(md.modify(msgid));

%>
<br>
<a href="main.jsp">返回</a>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<script type="text/javascript">
function validate(){
if(resForm.uname.value==""){
alert("账号不能为空!");
return;
}
if(resForm.upwd.value==""){
alert("密码不能为空!");
return;
}
resForm.submit();
}
</script>
<form action="registerServlet">
<b>用户名</b>
<input type="text" name="uname" />
<br />
<b>密码</b>
<input type="text" name="upwd" />
<br />
<input type="submit" value="注册" />
<a href="log.jsp">登录</a>
</form>
</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="writServelt">
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>
package com.bk.dog;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
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?useUnicode=true&characterEncoding=utf8", "root", "jth12345");
} 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.bk.dog;

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.bk.e.Mail;

public class MailDao extends BaseDao{
//添加邮件
public void addMail(Mail m){
Connection conn=getConnection();
String sql="insert into mail(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) {
MailDao md=new MailDao();
md.delMail(4);
}
//删除邮件(根据id)
public void delMail(int id){
Connection con=getConnection();
String sql="delete from mail 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);
}
}
//修改

public Mail chaK(int msgid){
Mail m=null;
Connection con=getConnection();
ResultSet rs=null;
PreparedStatement ps=null;
String sql="select * from msg where msgid=?";
try {
ps=con.prepareStatement(sql);
ps.setInt(1, msgid);
rs=ps.executeQuery();
while(rs.next()){
m=new Mail();
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"));
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
closeAll(con, ps, rs);
}
return m;
}

public int modify(int msgid){
int t=1;
Connection con=getConnection();
PreparedStatement ps=null;
String sql="update msg set state=1 where msgid=?";
try {
ps=con.prepareStatement(sql);
ps.setInt(1, msgid);
t=ps.executeUpdate();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
closeAll(con, ps, null);
}
return t;
}

//查看
public List<Mail> getMailByReceiver(String uname){
List<Mail> list=new ArrayList<Mail>();
Connection con=getConnection();
String sql="select * from mail where sendto=?";
PreparedStatement ps=null;
ResultSet rs=null;
try {
ps = con.prepareStatement(sql);
ps.setString(1,uname);
rs=ps.executeQuery();
while(rs.next()){
//每读取一行,创建一个对象,对象放到集合中
Mail m=new Mail();
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.bk.dog;

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 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;
}
public int register(String uname, String upwd) {
Connection con = getConnection();
PreparedStatement ps = null;
int s = 0;
try {
String sql = "insert into users(uname,upwd) values(?,?)";
ps = con.prepareStatement(sql);
ps.setString(1, uname);
ps.setString(2, upwd);
s = ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
} finally {
closeAll(con, ps, null);
}
return s;
}

}
package com.bk.e;

import java.util.Date;

public class Mail {

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.bk.e;

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;
}

}

package com.sev;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.bk.dog.MailDao;

public class deltServlet extends HttpServlet {

/**
* Constructor of the object.
*/
public deltServlet() {
super();
}

/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}

/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

doPost(request, response);
}

/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
int id=Integer.parseInt(request.getParameter("id"));
MailDao md=new MailDao();
md.delMail(id);
response.sendRedirect("main.jsp");
}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}

}
package com.sev;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.bk.dog.MailDao;
import com.bk.dog.UsersDao;

public class logServlet extends HttpServlet {

public logServlet() {
super();
}

public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

request.setCharacterEncoding("utf-8");
String uname=request.getParameter("uname");
String upwd=request.getParameter("upwd");
UsersDao ud=new UsersDao();
MailDao md=new MailDao();
if(ud.login(uname, upwd)){
request.getSession().setAttribute("uname", uname);
request.getRequestDispatcher("main.jsp").forward(request, response);
}else{
response.setHeader("refresh", "5;url=log.jsp");
}
}

public void init() throws ServletException {
// Put your code here
}

}
package com.sev;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.bk.dog.MailDao;
import com.bk.dog.UsersDao;

public class registerServlet extends HttpServlet {

/**
* Constructor of the object.
*/
public registerServlet() {
super();
}

/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}

/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}

/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

request.setCharacterEncoding("utf-8");
String uname = request.getParameter("uname");
String upwd = request.getParameter("upwd");
UsersDao ud=new UsersDao();
MailDao md=new MailDao();
if(ud.register(uname, upwd)>0){
request.getSession().setAttribute("uname", uname);
request.getRequestDispatcher("log.jsp").forward(request, response);
}else{
response.setHeader("refresh", "3;url=register.jsp");
}
}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}

}
package com.sev;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.bk.dog.MailDao;
import com.bk.e.Mail;

public class writServelt extends HttpServlet {

/**
* Constructor of the object.
*/
public writServelt() {
super();
}

/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}

/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);

}

/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String uname=request.getParameter("uname");
String title=request.getParameter("title");
String sendto=request.getParameter("sendto");
String content=request.getParameter("content");
Mail m=new Mail();
m.setUsername(uname);
m.setSendto(sendto);
m.setTitle(title);
m.setMsgcontent(content);
MailDao md=new MailDao();
md.addMail(m);
response.setHeader("refresh", "3;url=main.jsp");

}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}

}

posted @ 2022-05-28 22:22  u户  阅读(6)  评论(0编辑  收藏  举报