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  • 数据库程序设计第四天--管理员权限

    一、说在前面

    　　今天目标完成管理员权限的相关操作，对用户的增删改查操作

    二、任务进度

    <%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link rel="stylesheet" href="layui/layui.css" >
<script type="text/javascript" src="js/bootstrap.js"></script>
<script type="text/javascript" src="layui/layui.js"></script>
<script src="layui/layui.all.js"></script>

<title>用户管理</title>
</head>
<body>
<% 
    Object message = request.getAttribute("message");
    Object list    =request.getAttribute("list");
    if(message!=null && !"".equals(message)){
%>
    <script type="text/javascript">
        alert("<%=request.getAttribute("message")%>");
    </script>
<% 
    }
%>
<table class="layui-table">
  <colgroup>
    <col width="250">
    <col width="250">
    <col width="300">
    <col width="150">
  </colgroup>
  <thead>
    <tr>
      <th>账号</th>
      <th>密码</th>
      <th>级别(0:管理员 / 1:隔离地管理员 / 2:隔离人员)</th>
      <th>操作</th>
    </tr> 
  </thead>
  <tbody>
      <tr>
          <form action="insertPeopleServlet" class="layui-form" id="form" onsubmit="return check()">
              <td><input type="text" id="account" name="account" required  lay-verify="required" autocomplete="off" class="layui-input"></td>
              <td><input type="text" id="password" name="password" required lay-verify="required" autocomplete="off" class="layui-input"></td>
              <td><input type="text" id="level" name="level" required  lay-verify="required|number" autocomplete="off" class="layui-input"></td>
              <td><button type="submit" class="layui-btn" lay-submit lay-filter="formDemo" ><i class="layui-icon " style="font-size: 23px; color: white;">&nbsp;&nbsp;&#xe624;&nbsp;</i></button></td>
              
          </form>
      </tr>
    <c:forEach var="item" items="${list}">
        <tr>
            <td>${item.account}</td>
            <td>${item.password}</td>
            <td>${item.level}</td>
            <td><a href="update_people.jsp?account=${item.account}&password=${item.password}&level=${item.level}" target="_self"> <button type="button" class="layui-btn layui-btn-sm"><i class="layui-icon" style="font-size: 23px; color: white;">&#xe642;</i></button></a>
                <a href="deletePeopleServlet?account=${item.account}" onclick="return confirm('确定删除么')"><button type="button" class="layui-btn layui-btn-danger layui-btn-sm"><i class="layui-icon" style="font-size: 23px; color: white;">&#xe640;</i></button></a>
            </td>
        </tr>
    </c:forEach>
  </tbody>
</table>
</body>
<script>
//Demo
layui.use('form', function(){
  var form = layui.form;
  //监听提交
  form.on('submit(formDemo)', function(data){
    layer.msg(JSON.stringify(data.field));
    return true;
  });
});
function check(){
    var account=document.getElementById("account");
    var password=document.getElementById("password");
    var level=document.getElementById("level");
    if(account.value==""){
            alert("账号不能为空");
            account.focus();
            return false;
        }
        else if(password.value==""){
            alert("密码不能为空");
            password.focus();
            return false;
        }
        else if(level.value==""){
            alert("等级不能为空");
            level.focus();
            return false;
        }
        else if(!(level.value=='0'||level.value=='1'||level.value=='2')){
            alert(level.value);
            level.focus();
            return false;
        }
}
</script>
</html>
    adminshow
    package Servlet;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

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

import Bean.LoginBean;
import Dao.LoginDao;

/**
 * Servlet implementation class AdminShowServlet
 */
@WebServlet("/adminShowServlet")
public class AdminShowServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public AdminShowServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        List<LoginBean> list=new ArrayList();
        LoginDao login=new LoginDao();
        list=login.list();
        request.setAttribute("list", list);
        request.getRequestDispatcher("adminshow.jsp").forward(request, response);
        
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}
    AdminShowServlet
    package Servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import Bean.LoginBean;
import Dao.LoginDao;

/**
 * Servlet implementation class DeletePeopleServlet
 */
@WebServlet("/deletePeopleServlet")
public class DeletePeopleServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public DeletePeopleServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        String account=request.getParameter("account");
        System.out.println(account);
        LoginDao loginjudger=new LoginDao();
        if(loginjudger.delete(account)){
            request.setAttribute("message", "删除成功");
            request.getRequestDispatcher("adminShowServlet").forward(request, response);
        }else {
            request.setAttribute("message", "删除失败");
            request.getRequestDispatcher("adminShowServlet").forward(request, response);
        }
        
        
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}
    DeletePeopleServlet
    package Servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import Bean.LoginBean;
import Dao.LoginDao;

/**
 * Servlet implementation class UpdatePeopleServlet
 */
@WebServlet("/updatePeopleServlet")
public class UpdatePeopleServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public UpdatePeopleServlet() {
        super();
        // TODO Auto-generated constructor stub
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        
        String account=request.getParameter("account");
        String password=request.getParameter("password");
        int level=Integer.parseInt(request.getParameter("level"));
        LoginDao loginjudger=new LoginDao();
        LoginBean login=new LoginBean(account, password, level);
        if(loginjudger.update(login)){
            request.setAttribute("message", "修改成功");
            request.getRequestDispatcher("adminShowServlet").forward(request, response);
        }else {
//            System.out.println("用户不存在");
            request.setAttribute("message", "修改失败");
            request.getRequestDispatcher("adminShowServlet").forward(request, response);
            
        }
        
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}
    UpdatePeopleServlet
    package Servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import Bean.LoginBean;
import Dao.LoginDao;

/**
 * Servlet implementation class InsertPeopleServlet
 */
@WebServlet("/insertPeopleServlet")
public class InsertPeopleServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public InsertPeopleServlet() {
        super();
        // TODO Auto-generated constructor stub
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        String account=request.getParameter("account");
        String password=request.getParameter("password");
        int level=Integer.parseInt(request.getParameter("level"));
        LoginBean login=new LoginBean(account, password, level);
        LoginDao loginjudger=new LoginDao();
        if(loginjudger.insert(login)) {
            request.setAttribute("message", "添加成功");
            request.getRequestDispatcher("adminShowServlet").forward(request, response);
        }else {
            request.setAttribute("message", "添加失败");
            request.getRequestDispatcher("adminShowServlet").forward(request, response);
        }
        
    }

    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        // TODO Auto-generated method stub
        doGet(request, response);
    }

}
    InsertPeopleServlet
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  • 原文地址：https://www.cnblogs.com/suanai/p/13540246.html
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