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JavaWeb课程设计-学生信息管理系统(Jsp+Servlet+MySql)

JavaWeb课程设计,通过Jsp+Servlet+MySql设计实现,功能比较简单,用户可以通过登录注册方式进入管理界面可以管理学生信息,班级信息,课程信息等信息。实现了分页查询,添加信息、修改信息、删除信息、选中删除等功能,下面是运行的界面:

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相关技术:

Servlet+JSP+Bootstrap+Jquery+MYSQL

项目目录:

后端代码部分:
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前端页面部分:
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相关jar包:
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数据库表结构:

create database StudentInfo;
use StudentInfo;
drop table if exists student;
drop table if exists user;
drop table if exists class;
drop table if exists course;

#用户表
create table user(
	id int auto_increment primary key,
	username nvarchar(20) null,
    password nvarchar(20) null,
    name nvarchar(20) null,
	gender nchar(10) null,
	age int null,
	classno nvarchar(20) null,
	phone nvarchar(11) unique null,
	email nvarchar(30) null
);

#学生表
create table student(
	id int auto_increment primary key,
	name nvarchar(20) null,
	gender nvarchar(10) null,
	age int null,
	classno nvarchar(20) null,
	phone nvarchar(11) unique null,
	email nvarchar(30) null
);

#班级表
create table class(
	id int auto_increment primary key,
	cno nvarchar(10) null,
	classname nvarchar(30) null,
	department nvarchar(30) null
);

#课程表
create table course(
	id int auto_increment primary key,
	courseno nvarchar(20) null,
    coursename nvarchar(20) null,
    type nvarchar(8) null,
	period int null,
    credit double null
);

用户信息表:User
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学生信息表:Student
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班级信息表:Class
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课程信息表:Course
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功能展示:

用户登录:
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用户注册:
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登录成功:
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点击左上角用户名完善个人信息:
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信息管理部分实现了分页展示,增、删、改、查、批量删除

学生信息管理:
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班级信息管理:
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课程管理:
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设计步骤

代码比较多,只展示比较重要的部分:

1. 数据库连接实现

数据库连接部分使用的是druid数据库连接池,首先先进行数据库连接池的配置:druid.properties

driverClassName=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/mydb?serverTimezone=GMT%2B8&useUnicode=true&characterEncoding=utf-8
username=root
password=123456
initialSize=5
maxActive=10
maxWait=3000

然后编写数据库连接工具类:

/**
 * JDBC工具类 使用Durid连接池
 */
public class JDBCUtils {
   
   

    private static DataSource ds ;
    static {
   
   
        try {
   
   
            //1.加载配置文件
            Properties pro = new Properties();
            //使用ClassLoader加载配置文件,获取字节输入流
            InputStream is = JDBCUtils.class.getClassLoader().getResourceAsStream("druid.properties");
            pro.load(is);

            //2.初始化连接池对象
            ds = DruidDataSourceFactory.createDataSource(pro);
        } catch (IOException e) {
   
   
            e.printStackTrace();
        } catch (Exception e) {
   
   
            e.printStackTrace();
        }
    }

    /**
     * 获取连接池对象
     */
    public static DataSource getDataSource(){
   
   
        return ds;
    }

    /**
     * 获取连接Connection对象
     */
    public static Connection getConnection() throws SQLException {
   
   
        return  ds.getConnection();
    }
}

这里我们使用JdbcTemplate来进行数据连接操作数据库:

private JdbcTemplate template = new JdbcTemplate(JDBCUtils.getDataSource());

2. 实现持久层(Dao)

编写持久层接口:

/**
 * 用户操作的DAO
 */
public interface UserDao {
   
   

}

实现持久层接口:

public class UserDaoImpl implements UserDao {
   
   

    private JdbcTemplate template = new JdbcTemplate(JDBCUtils.getDataSource());

}

3. 实现业务层(Service)

编写业务层接口:

/**
 * 用户管理的业务接口
 */
public interface UserService {
   
   

}

实现业务层接口:

public class UserServiceImpl implements UserService {
   
   
    private UserDao dao = new UserDaoImpl();

}

4.实现表现层功能

编写表现层:

@WebServlet("/loginServlet")
public class LoginServlet extends HttpServlet {
   
   
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
   
   
       /*
        * Code
        */
    }

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

5.由于表现层Servlet太多,我们可以做简单的提取

编写BaseServlet类,然后由其他servlet继承

public class BaseServlet extends HttpServlet {
   
   
	
	private static final long serialVersionUID = 1L;

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

	   try {
   
   
		   // 获取请求标识
           String methodName = request.getParameter("method");
           // 获取指定类的字节码对象
           Class<? extends BaseServlet> clazz = this.getClass();//这里的this指的是继承BaseServlet对象
           // 通过类的字节码对象获取方法的字节码对象
           Method method = clazz.getMethod(methodName, HttpServletRequest.class, HttpServletResponse.class);
           // 让方法执行
           method.invoke(this, request, response);

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

5.编写对应的前端页面:以user_login.jsp为例

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<!DOCTYPE html> 
<html lang="zh-CN">
  <head>
    <meta charset="utf-8"/>
    <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
    <meta name="viewport" content="width=device-width, initial-scale=1"/>
    <title>管理员登录</title>

    <!-- 1. 导入CSS的全局样式 -->
    <link href="css/bootstrap.min.css" rel="stylesheet">
    <!-- 2. jQuery导入,建议使用1.9以上的版本 -->
    <script src="js/jquery-2.1.0.min.js"></script>
    <!-- 3. 导入bootstrap的js文件 -->
    <script src="js/bootstrap.min.js"></script>
    <script type="text/javascript">
    
        //切换验证码
        function refreshCode(){
    
    
        	//1.获取验证码图片对象
        	var vcode=document.getElementById("vcode");
        	//2.设置其src属性,加时间戳
        	//2.设置其src属性,加时间戳
            vcode.src = "${pageContext.request.contextPath}/checkCodeServlet?time="+new Date().getTime();
    	
        }
    </script>
  </head>
  <body>
  	<div class="container" style="width: 400px;">
  		<h3 style="text-align: center;">管理员登录</h3>
        <form action="${pageContext.request.contextPath}/loginServlet" method="post">
	      <div class="form-group">
	        <label for="user">用户名:</label>
	        <input type="text" name="username" class="form-control" id="user" placeholder="请输入用户名"/>
	      </div>
	      
	      <div class="form-group">
	        <label for="password">密码:</label>
	        <input type="password" name="password" class="form-control" id="password" placeholder="请输入密码"/>
	      </div>
	      
	      <div class="form-inline">
	        <label for="vcode">验证码:</label>
	        <input type="text" name="verifycode" class="form-control" id="verifycode" placeholder="请输入验证码" style="width: 120px;"/>
	        <a href="javascript:refreshCode();">
	        <img src="${pageContext.request.contextPath}/checkCodeServlet" title="看不清点击刷新" id="vcode"/>
	        </a>
	      </div>
	      <hr/>
	      <div class="form-group" style="text-align: center;">
	        <input class="btn btn btn-primary" type="submit" value="登录">
	       </div>
	  	</form>
		
		<!-- 出错显示的信息框 -->
	  	<div class="alert alert-warning alert-dismissible" role="alert">
		    <button type="button" class="close" data-dismiss="alert" >
		  	<span>&times;</span></button>
		    <strong>${login_msg}</strong>
		</div>
  	</div>
  </body>
</html>

运行截图:
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测试登录功能,发现中文乱码问题(直接继承HttpServlet不会出现,继承BaseServlet会出现)

6.编写过滤器解决中文乱码问题

@WebFilter("/*")
public class CharchaterFilter implements Filter {
   
   

	protected String encoding; 
	
	@Override
	public void destroy() {
   
   
		// TODO 自动生成的方法存根
		
	}

	@Override
	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
   
   
		// TODO 自动生成的方法存根
		HttpServletRequest request=(HttpServletRequest)req;
		HttpServletResponse response=(HttpServletResponse)res;
		
		String method=request.getMethod();
		
		if(method.equalsIgnoreCase("post")){
   
   
			request.setCharacterEncoding("utf-8");
		}
		
		response.setContentType("text/html;charset=utf-8");
		
		chain.doFilter(request, response);
	}

	@Override
	public void init(FilterConfig arg0) throws ServletException {
   
   
		// TODO 自动生成的方法存根
		
	}

}

7.编写列表页面,并在后端代码上实现响应的功能

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<html>
<head>

	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
    <title>网站后台管理</title>
 
    <!-- Bootstrap -->
    <link rel="stylesheet" href="css/bootstrap.min.css">
	<!-- jQuery (Bootstrap 的所有 JavaScript 插件都依赖 jQuery,所以必须放在前边) -->
	<script type="text/javascript" src="js/jquery-2.1.1.min.js"></script>
	<!-- 加载 Bootstrap 的所有 JavaScript 插件。你也可以根据需要只加载单个插件。 -->
	<script type="text/javascript" src="js/bootstrap.min.js"></script>
    <style type="text/css">
        @media (min-width: 768px) {
    
    
           #slider_sub{
    
    
               width: 200px;
               margin-top: 51px;
               position: absolute;
               z-index: 1;
               height: 600px;
           }
            .mysearch{
    
    
                margin: 10px 0;
            }
            .page_main{
    
    
                margin-left: 205px;
            }
        }
    </style>
    <script>
        function deleteStudent(id){
    
    
            //用户安全提示
            if(confirm("您确定要删除吗?")){
    
    
                //访问路径
                location.href="${pageContext.request.contextPath}/student?method=delStudent&id="+id;
            }
        }

        window.onload = function(){
    
    
            //给删除选中按钮添加单击事件
            document.getElementById("delSelectedStudent").onclick = function(){
    
    
                if(confirm("您确定要删除选中条目吗?")){
    
    

                   var flag = false;
                    //判断是否有选中条目
                    var cbs = document.getElementsByName("id");
                    for (var i = 0; i < cbs.length; i++) {
    
    
                        if(cbs[i].checked){
    
    
                            //有一个条目选中了
                            flag = true;
                            break;
                        }
                    }

                    if(flag){
    
    //有条目被选中
                        //表单提交
                        document.getElementById("form").submit();
                    }

                }

            }
            //1.获取第一个cb
            document.getElementById("firstCb").onclick = function(){
    
    
                //2.获取下边列表中所有的cb
                var cbs = document.getElementsByName("uid");
                //3.遍历
                for (var i = 0; i < cbs.length; i++) {
    
    
                    //4.设置这些cbs[i]的checked状态 = firstCb.checked
                    cbs[i].checked = this.checked;

                }

            }

        }

    </script>
</head>
<body>
    <nav class="navbar navbar-default navbar-static-top">
        <div class="navbar-header">
            <!--缩放 -->
            <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#slider_sub">
                <span class="sr-only"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            <a href="#" class="navbar-brand">学生信息管理</a>
        </div>
        <ul class="nav navbar-nav navbar-right" style="margin-right: 25px">
            <li><a href="${pageContext.request.contextPath}/user?method=findUser&id=${user.id}"><span class="badge" style="background: #C12E2A">${user.username}</span></a></li>
            <li><a href="${pageContext.request.contextPath}/user?method=destroyUser"><span class="glyphicon glyphicon-off"></span>&nbsp;注销</a></li>
        
        </ul>
 
        <!-- 侧边栏  -->
        <div class="navbar-default navbar-collapse" id="slider_sub">
            <ul class="nav">
                <li>

			        <form class="form-inline" action="${pageContext.request.contextPath}/student?method=findAll" method="post">
			            
			            <!--搜索 -->
	                    <div class="input-group mysearch">
	                        <input type="text" name="name" value="${condition.name[0]}" class="form-control" id="exampleInputName2" >
	                        <span class="input-group-btn">
	                            <button type="submit" class="btn btn-default">
	                                <span class="glyphicon glyphicon-search"></span>
	                            </button>
	                        </span>
	 
	                    </div>
			        </form>

                    
                </li>
                <li><a href="${pageContext.request.contextPath}/index.jsp" class="collapse" data-toggle="collapse">首页<span class="glyphicon glyphicon-chevron-right pull-right"></span></a>
                     <!-- <ul id="sub2" class="nav collapse">
                        <li><a href="#"><span class="glyphicon glyphicon-info-sign"></span>&nbsp;信息管理</a></li>
                        <li><a href="#"><span class="glyphicon glyphicon-user"></span>&nbsp;学生管理</a></li>
                    </ul> -->
                </li>
                <li><a href="${pageContext.request.contextPath}/student?method=findAll"  class="collapse" data-toggle="collapse">学生管理<span class="glyphicon glyphicon-chevron-right pull-right"></span></a>
                    
                </li>
                <li><a href="${pageContext.request.contextPath}/classno?method=findAll"  class="collapse" data-toggle="collapse">班级管理<span class="glyphicon glyphicon-chevron-right pull-right"></span></a>
                    
                </li>
                <li><a href="${pageContext.request.contextPath}/course?method=findAll"  class="collapse" data-toggle="collapse">课程管理<span class="glyphicon glyphicon-chevron-right pull-right"></span></a>
                    
                </li>
                <li><a href="${pageContext.request.contextPath}/about.jsp"  class="collapse" data-toggle="collapse">关于我们<span class="glyphicon glyphicon-chevron-right pull-right"></span></a>
                    
                </li>
            </ul>
        </div>
    </nav>
 
    <!-- 主区域 -->
    <div class="page_main" style="background: rgba(92,88,116,0.34)">
        <ol class="breadcrumb">
            <li><a href="#">管理首页</a></li>
            <li><a href="#">学生管理</a></li>
            <li><a href="#">学生信息</a></li>
        </ol>
 
        <div class="row">
            <div class="col-md-12 col-sm-3">
                <div class="panel panel-default">
                    <!-- <div class="panel-header">学生信息</div> -->
                    
                    <div class="panel-body table-responsive">
                    
				
				    <div style="float: right;margin: 5px;">
				
				        <a class="btn btn-primary" href="${pageContext.request.contextPath}/student_add.jsp">添加学生</a>
				        <a class="btn btn-primary" href="javascript:void(0);" id="delSelectedStudent">删除选中</a>
				
				    </div>
                    
                    <form id="form" action="${pageContext.request.contextPath}/student?method=delSelectedStudent" method="post">
                        <table class="table table-striped table-hover" style="margin: 10px;">
                            <thead>
	                            <tr>
	                            	<th><input type="checkbox" id="firstCb"></th>
	                            	<th>编号</th>
	                                <th>姓名</th>
	                                <th>性别</th>
	                                <th>年龄</th>
	                                <th>班级</th>
	                                <th>电话</th>
	                                <th>邮箱</th> 
	                     
	                            </tr>
                            </thead>
                            
                            <c:forEach items="${pb.list}" var="student" varStatus="s">
					            <tr>
					                <td><input type="checkbox" name="id" value="${student.id}"></td>
					                <td>${student.id}</td> 
					                <td>${student.name}</td>
					                <td>${student.gender}</td>
					                <td>${student.age}</td>
					                <td>${student.classno}</td>
					                <td>${student.phone}</td>
					                <td>${student.email}</td>
					                <td><a class="btn btn-default btn-sm" href="${pageContext.request.contextPath}/student?method=findStudent&id=${student.id}">修改</a>&nbsp;
					                    <a class="btn btn-default btn-sm" href="javascript:deleteStudent(${student.id});">删除</a></td>
					            </tr>

					        </c:forEach>
					        
                          
                        </table>
                        </form>
     
                        
                        
                        <nav aria-label="Page navigation" class="pull-right">
                            <ul class="pagination" style="margin-top: 10px;">
   
                                <c:if test="${pb.currentPage == 1}">
				                    <li class="disabled">
				                </c:if>
				
				                <c:if test="${pb.currentPage != 1}">
				                    <li>
				                </c:if>
				
				                    <a href="${pageContext.request.contextPath}/student?method=findAll&currentPage=${pb.currentPage - 1}&rows=5&name=${condition.name[0]}&address=${condition.address[0]}&email=${condition.email[0]}" aria-label="Previous">
				                        <span aria-hidden="true">&laquo;</span>
				                    </a>
				                    </li>
				
				                <c:forEach begin="1" end="${pb.totalPage}" var="i" >
				
				                    <c:if test="${pb.currentPage == i}">
				                        <li class="active"><a href="${pageContext.request.contextPath}/student?method=findAll&currentPage=${i}&rows=5&name=${condition.name[0]}&address=${condition.address[0]}&email=${condition.email[0]}">${i}</a></li>
				                    </c:if>
				                    <c:if test="${pb.currentPage != i}">
				                        <li><a href="${pageContext.request.contextPath}/student?method=findAll&currentPage=${i}&rows=5&name=${condition.name[0]}&address=${condition.address[0]}&email=${condition.email[0]}">${i}</a></li>
				                    </c:if>
				
				                </c:forEach>
				
				                <li>
				                    <a href="${pageContext.request.contextPath}/student?method=findAll&currentPage=${pb.currentPage + 1}&rows=5&name=${condition.name[0]}&address=${condition.address[0]}&email=${condition.email[0]}" aria-label="Next">
				                        <span aria-hidden="true">&raquo;</span>
				                    </a>
				                </li>
				                <span style="font-size: 25px;margin-left: 5px;">
				                    	共${pb.totalCount}条记录,共${pb.totalPage}页
				                </span>
                            </ul>
                        </nav>
                    </div>
                </div>
            </div>
 
        </div>
    </div>

</body>
</html>

在这里插入图片描述

8.实现不同信息的删除修改功能,并进一步完善

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!-- 网页使用的语言 -->
<html lang="zh-CN">
    <head>
        <!-- 指定字符集 -->
        <meta charset="utf-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>修改学生信息</title>

        <link href="css/bootstrap.min.css" rel="stylesheet">
        <script src="js/jquery-2.1.0.min.js"></script>
        <script src="js/bootstrap.min.js"></script>
        
    </head>
    <body>
        <div class="container" style="width: 400px;">
        <h3 style="text-align: center;">修改学生信息</h3>
        <form action="${pageContext.request.contextPath}/student?method=updateStudent" method="post">
            <!--  隐藏域 提交id-->
            <input type="hidden" name="id" value="${student.id}">

          <div class="form-group">
            <label for="name">姓名:</label>
            <input type="text" class="form-control" id="name" name="name"  value="${student.name}" readonly="readonly" placeholder="请输入姓名" />
          </div>

          <div class="form-group">
            <label>性别:</label>
              <c:if test="${student.gender == ''}">
                  <input type="radio" name="gender" value="" checked /><input type="radio" name="gender" value=""  /></c:if>

              <c:if test="${student.gender == ''}">
                  <input type="radio" name="gender" value=""  /><input type="radio" name="gender" value="" checked  /></c:if>


          </div>

          <div class="form-group">
            <label for="age">年龄:</label>
            <input type="text" class="form-control" value="${student.age}" id="age"  name="age" placeholder="请输入年龄" />
          </div>

          <div class="form-group">
            <label for="classno">班级:</label>
            
            <input type="text" id="classno" class="form-control" value="${student.classno}" name="classno" placeholder="请输入班级信息"/>
          
          </div>

          <div class="form-group">
            <label for="phone">电话</label>
            <input type="text" id="phone" class="form-control" value="${student.phone}" name="phone" placeholder="请输入电话号码"/>
          </div>

          <div class="form-group">
            <label for="email">Email:</label>
            <input type="text" id="email" class="form-control" value="${student.email}" name="email" placeholder="请输入邮箱地址"/>
          </div>

             <div class="form-group" style="text-align: center">
                <input class="btn btn-primary" type="submit" value="提交" />
                <input class="btn btn-default" type="reset" value="重置" />
             </div>
        </form>
        </div>
    </body>
</html>

在这里插入图片描述

版权声明
本文为[osc_dg0eswo7]所创,转载请带上原文链接,感谢
https://my.oschina.net/u/4342169/blog/4839783

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