JSP第八次課：網上商城後臺--後臺用戶登陸

時間 2020-08-26

標籤 jsp 第八網上商城後臺用戶登陸欄目 JSP 简体版

原文原文鏈接

1、後臺管理帳號設計css

一、數據庫添加admin表，包含aid，name，password字段html

二、設計Javabeanjava

package mybean;sql

public class Admin {
private int aid;
private String name;
private String password;
public int getAid() {
  return aid;
}
public void setAid(int aid) {
  this.aid = aid;
}
public String getName() {
  return name;
}
public void setName(String name) {
  this.name = name;
}
public String getPassword() {
  return password;
}
public void setPassword(String password) {
  this.password = password;
}

數據庫

}
session

三、dao實現驗證用戶登陸是否正確框架

package mybean;jsp

import java.sql.*;ide

public class AdminDAO {
public Admin login(String name,String pwd)
{
  Admin admin=null;


  Connection conn=null;
  PreparedStatement ps=null;
  ResultSet rs=null;

  String sql="select * from admin where name=? and password=?";

  String className="com.microsoft.sqlserver.jdbc.SQLServerDriver";
  String user="shopping";
  String password="shopping";
  String url="jdbc:sqlserver://localhost:1433;database=ebuy";
  //String url="jdbc:sqlserver://10.40.43.202:1433;database";

  try {
   Class.forName(className);
   conn=DriverManager.getConnection(url, user, password);
   ps=conn.prepareStatement(sql);
   ps.setString(1, name);
   ps.setString(2, pwd);
   rs=ps.executeQuery();
   if(rs.next()){
    admin.setAid(rs.getInt("aid"));
    admin.setName(rs.getString("name"));
    admin.setPassword(rs.getString("password"));
   }

  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

  try {
   rs.close();
   ps.close();
   conn.close();
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }


  return admin;
}sqlserver

}

四、login.htm用戶登錄頁

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

</head>

<body>
<form id="form1" name="form1" method="post" action="doLogin.jsp">
<table width="400" border="1">
    <tr>
      <td>用戶名</td>
      <td><input type="text" name="username" id="name" /></td>
    </tr>
    <tr>
      <td>密碼</td>
      <td><input type="text" name="pass" id="pass" /></td>
    </tr>
    <tr>
      <td> </td>
      <td><input type="submit" name="button" id="button" value="提交" />
      <input type="reset" name="button2" id="button2" value="重置" /></td>
    </tr>
</table>
</form>
</body>
</html>

五、doLogin處理用戶信息

<%@ page language="java" import="mybean.*,java.util.*" pageEncoding="UTF-8"%>

<%
String name = request.getParameter("name");
String pwd = request.getParameter("pass");
AdminDAO dao=new AdminDAO();
Admin admin=dao.login(name, pwd);

  if(admin!=null)
  {
  response.setHeader("refresh", "2;url=index.jsp"); //登陸後臺主頁
  session.setAttribute("admin",admin);
  }
  else {
    out.println("登陸失敗");
    response.setHeader("refresh", "2;url=login.htm");
  }

2、後臺設計模板相關處理

一、下載模板

下載的模板分爲index.htm---index.jsp是首頁（框架頁），login.htm爲登陸頁，menu.htm爲左側菜單頁，main.htm---main.jsp爲右側默認顯示頁，header爲頭部---main.jsp

二、login的action設置爲doLogin.jsp

三、index.htm修改成index.jsp，編碼方式設置爲utf-8

<%@ page language="java" import="mybean.*,java.util.*" pageEncoding="UTF-8"%>
<%
Admin admin=(Admin)session.getAttribute("admin");
if(admin!=null)
{
%>
<HTML>
<HEAD>
<TITLE>後臺管理系統V1.0</TITLE>
<LINK href="css/admin.css" type="text/css" rel="stylesheet">
</HEAD>
<FRAMESET border=0 frameSpacing=0 rows="60, *" frameBorder=0>
<FRAME name=header src="head.jsp" frameBorder=0 noResize scrolling=no>
<FRAMESET cols="170, *">
<FRAME name=menu src="menu.htm" frameBorder=0 noResize>
<FRAME name=main src="right.jsp" frameBorder=0 noResize scrolling=yes>
</FRAMESET>
</FRAMESET>
<noframes>
</noframes>
</HTML>
<%}else{response.sendRedirect("login.htm");} %>

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