2021.5.11

今日学习进度：

学生管理系统的web界面设计：

index.jsp

<%@page import="entity.Student"%>
<%@page import="java.util.List"%>
<%@page import="dao.Dao"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







class="bg">
学生管理系统



    添加学生



<% 
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
    List list=Dao.getAllStudents();
%> 
<%if(list.isEmpty()) {%>






当前数据库无相关信息
<%}else {%>

<%for(Student str:list){ %>
    
<%}} %>

    

        
姓名
        
性别
        
生日
        
住址
        
操作
    

        
<%=str.getName() %>
        
<%=str.getSex() %>
        
<%=str.getBirthday() %>
        
<%=str.getAddress() %>
        
修改
        删除
    

add.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







class="bg">

    

        

            

                
姓名
                

            
            

                
性别
                
男&nbsp;
                女
            
            

                
生日
                

            
            

                
住址
                

            
            

                

                

            
        
    


<script type="text/javascript">
function check(){
    obj=document.getElementById('form');
    if(obj.name.value===""||obj.sex.value===""||obj.birthday.value===""||obj.address.value===""){
        alert("请将信息填写完整");
        return false;
    }
}
</script>

addstudent.jsp

<%@page import="dao.Dao"%>
<%@page import="entity.Student"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







<%
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
    Student student=new Student();
    student.setAddress(request.getParameter("address"));
    student.setBirthday(request.getParameter("birthday"));
    student.setName(request.getParameter("name"));
    student.setSex(request.getParameter("sex"));
    Dao.addStudent(student);
    response.sendRedirect("index.jsp");
%>

deletestudent.jsp

<%@page import="dao.Dao"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







<%
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
    int id=Integer.parseInt(request.getParameter("id"));
    Dao.deleteStudent(id);
    response.sendRedirect("index.jsp");
%>

update.jsp

<%@page import="dao.Dao"%>
<%@page import="entity.Student"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







class="bg">
<%
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
    int id=Integer.parseInt(request.getParameter("id"));
    Student student=Dao.getStudent(id);
%>

    
    

        

            
姓名
            

        
        

            
性别
            
男&nbsp;
            女
        
        

            
生日
            

        
        

            
住址
            

        
        

            

            

        
    

<script type="text/javascript">
window.onload=function(){
    var obj=document.getElementById("form");
    obj.name.value="<%=student.getName()%>";
    obj.sex.value="<%=student.getSex()%>";
    obj.birthday.value="<%=student.getBirthday()%>";
    obj.address.value="<%=student.getAddress()%>";
}
</script>
<script type="text/javascript">
function check(){
    obj=document.getElementById('form');
    if(obj.name.value===""||obj.sex.value===""||obj.birthday.value===""||obj.address.value===""){
        alert("请将信息填写完整");
        return false;
    }
}
</script>

updatestudent.jsp

<%@page import="dao.Dao"%>
<%@page import="entity.Student"%>
<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>







<%
    request.setCharacterEncoding("utf-8");
    response.setCharacterEncoding("utf-8");
    Student student=new Student();
    student.setAddress(request.getParameter("address"));
    student.setBirthday(request.getParameter("birthday"));
    student.setId(Integer.parseInt(request.getParameter("id")));
    student.setName(request.getParameter("name"));
    student.setSex(request.getParameter("sex"));
    Dao.updateStudent(student);
    response.sendRedirect("index.jsp");
%>