简易学生管理系统_web_字符流传输数据
功能
- (1)添加学生信息,
- (2)修改学生信息,
- (3)删除学生信息,
- (4)查询学生信息
(1)(2)(3)都在(4)的基础上编写,通过查询学生信息的页面的按钮来进行跳转,
前端代码(jsp页面)
首页
点击查看学生信息可以直接跳转到可以显示学生信息列表的页面
然后我们需要创建一个路径为/stu/accept的Servlet用来接收浏览器发送来的查看学生信息的请求,其中/stu可以用${pageContext.page.contextPath}来代替,这样可以确保模块路径名改变的情况下正常运行
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>$Title$</title>
</head>
<body>
欢迎进入学生管理系统
<a href="${pageContext.request.contextPath}/accept">查看学生信息</a>
</body>
</html>
显示学生信息列表
ps:表格样式是别人弄的,哈哈
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<!-- 网页使用的语言 -->
<html lang="zh-CN">
<head>
<!-- 指定字符集 -->
<meta charset="utf-8">
<!-- 使用Edge最新的浏览器的渲染方式 -->
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<!-- viewport视口：网页可以根据设置的宽度自动进行适配，在浏览器的内部虚拟一个容器，容器的宽度与设备的宽度相同。
width: 默认宽度与设备的宽度相同
initial-scale: 初始的缩放比，为1:1 -->
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
<title>用户信息管理系统</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>
<style type="text/css">
td, th {
text-align: center;
}
</style>
</head>
<body>
<div class="container">
<h3 style="text-align: center">用户信息列表</h3>
<table border="1" class="table table-bordered table-hover">
<tr class="success">
<th>编号</th>
<th>姓名</th>
<th>性别</th>
<th>年龄</th>
<th>籍贯</th>
<th>QQ</th>
<th>邮箱</th>
<th>操作</th>
</tr>
<c:forEach items="${list}" var="ele">
<tr>
<!--属性名和getset方法里的要一样-->
<td>${
ele.id}</td>
<td>${
ele.name}</td>
<td>${
ele.sex}</td>
<td>${
ele.age}</td>
<td>${
ele.address}</td>
<td>${
ele.QQnumber}</td>
<td>${
ele.email}</td>
<!--将要修改的学生id传入request域中,让系统后台知道要修改的学生的对象是哪个,并回显到修改页面-->
<td><a class="btn btn-default btn-sm" href="/stu/bcs?name=${ele.id}" >修改</a>
<a class="btn btn-default btn-sm" href="javascript:deletebyid(${ele.id})" >删除</a></td>
</tr>
</c:forEach>
<tr>
<td colspan="8" align="center"><a class="btn btn-primary" href="addstu.jsp">添加联系人</a></td>
</tr>
<!--收集域中的错误信息并显示出来,没有则不显示-->
${
msg}
</table>
</div>
<script>
function deletebyid(id) {
<!--弹窗询问-->
if (confirm("确定删除该学生吗")) {
location.href = "${pageContext.request.contextPath}/removestu?name="+id;
}
}
</script>
</body>
</html>
添加学生页面
效果图
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<!-- 网页使用的语言 -->
<html lang="zh-CN">
<head>
<!-- 指定字符集 -->
<meta charset="utf-8">
<!-- 使用Edge最新的浏览器的渲染方式 -->
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<!-- viewport视口：网页可以根据设置的宽度自动进行适配，在浏览器的内部虚拟一个容器，容器的宽度与设备的宽度相同。
width: 默认宽度与设备的宽度相同
initial-scale: 初始的缩放比，为1:1 -->
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
<title>添加用户</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-3.2.1.min.js"></script>
<script>
$(function () {
$("#num").blur(function () {
$.ajax({
url: "${pageContext.request.contextPath}/stuname",
data: "num=" + $(this).val(),
success: function (resp) {
//若输入的学号在库中有重复的,则输入框会变红色,没有则是绿色
if (resp == 1) {
$("#num").removeAttr("style");
$("#num").css("border", "3px solid green");
} else {
$("#num").removeAttr("style");
$("#num").css("border", "3px solid red");
}
}
});
});
})
</script>
<!-- 3. 导入bootstrap的js文件 -->
</head>
<body>
<div class="container">
<center><h3>添加联系人页面</h3></center>
<form action="/stu/addstuser" method="post">
<div class="form-group">
<input type="hidden" class="form-control" id="do" name="do" value="addstudent" readonly>
</div>
<div class="form-group">
<label for="num">学号：</label>
<input type="text" class="form-control" id="num" name="num" placeholder="请输入学号">
</div>
<div class="form-group">
<label for="name">姓名：</label>
<input type="text" class="form-control" id="name" name="name" placeholder="请输入姓名">
</div>
<div class="form-group">
<label>性别：</label>
<input type="radio" name="sex" id="sex_man" value="男" checked="checked"/><label for="sex_man">男</label>
<input type="radio" name="sex" id="sex_woman" value="女"/><label for="sex_woman">女</label>
</div>
<div class="form-group">
<label for="age">年龄：</label>
<input type="text" class="form-control" id="age" name="age" placeholder="请输入年龄">
</div>
<div class="form-group">
<label for="address">籍贯：</label>
<select name="address" class="form-control" id="jiguan">
<option value="广东">广东</option>
<option value="广西">广西</option>
<option value="湖南">湖南</option>
</select>
</div>
<div class="form-group">
<label for="qq">QQ：</label>
<input type="text" class="form-control" name="qq" placeholder="请输入QQ号码"/>
</div>
<div class="form-group">
<label for="email">Email：</label>
<input type="text" class="form-control" 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"/>
<input class="btn btn-default" type="button" onclick="javascript:goback()" value="返回"/>
</div>
${
msg}
</form>
</div>
<script>
function goback() {
location.href="${pageContext.request.contextPath}/accept"
}
</script>
</body>
</html>
修改学生信息页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<!-- 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>修改用户</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;">修改联系人</h3>
<form action="/stu/change" method="post">
<div class="form-group">
<label for="name">姓名：</label>
<input type="text" class="form-control" id="name" name="name" readonly="readonly" placeholder="请输入姓名" value="${student.name}"/>
</div>
<div class="form-group">
<label>性别：</label>
<input type="radio" name="sex" value="男" ${
student.sex == "男"?"checked":""}/>男
<input type="radio" name="sex" value="女" ${
student.sex == "女"?"checked":""}/>女
</div>
<div class="form-group">
<label for="age">年龄：</label>
<input type="text" class="form-control" id="age" name="age" placeholder="请输入年龄" value="${student.age}"/>
</div>
<div class="form-group">
<label for="address">籍贯：</label>
<select id = "address"name="address" class="form-control" >
<!--想多加可以复制粘贴改名即可-->
<option value="广东">广东</option>
<option value="广西">广西</option>
<option value="湖南">湖南</option>
</select>
</div>
<div class="form-group">
<label for="qq">QQ：</label>
<input id = "qq" type="text" class="form-control" name="qq" placeholder="请输入QQ号码" value="${student.QQnumber}"/>
</div>
<div class="form-group">
<label for="email">Email：</label>
<input id = "email"type="text" class="form-control" name="email" placeholder="请输入邮箱地址" value="${student.email}"/>
</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" />
<input class="btn btn-default" type="button" onclick="javascript:goback()" value="返回"/>
</div>
</form>
${
msg}
</div>
<script>
<!--将籍贯的下拉栏进行回显-->
document.querySelectorAll("[value='${student.address}']")[0].selected=true;
function goback() {
location.href="${pageContext.request.contextPath}/accept"
}
</script>
</body>
</html>
首先我们先定义一个学生类,7个属性,有无参构造,getter&setter还有tostring()方法:
学生类_java
public class Student {
/*<>编号<姓名<>性别<>年龄<>籍贯<>QQ<>邮箱<>操作<>*/
String id;
String name;
String sex;
String age;
String address;
String QQnumber;
String email;
public Student(String id, String name, String sex, String age, String address, String QQnumber, String email) {
this.id = id;
this.name = name;
this.sex = sex;
this.age = age;
this.address = address;
this.QQnumber = QQnumber;
this.email = email;
}
public Student() {
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", sex='" + sex + '\'' +
", age=" + age +
", address='" + address + '\'' +
", QQnumber='" + QQnumber + '\'' +
", email='" + email + '\'' +
'}';
}
public void setId(String id) {
this.id = id;
}
public void setName(String name) {
this.name = name;
}
public void setSex(String sex) {
this.sex = sex;
}
public void setAge(String age) {
this.age = age;
}
public void setAddress(String address) {
this.address = address;
}
public void setQQnumber(String QQnumber) {
this.QQnumber = QQnumber;
}
public void setEmail(String email) {
this.email = email;
}
public String getId() {
return id;
}
public String getName() {
return name;
}
public String getSex() {
return sex;
}
public String getAge() {
return age;
}
public String getAddress() {
return address;
}
public String getQQnumber() {
return QQnumber;
}
public String getEmail() {
return email;
}
}
过滤类(解决全局的中文乱码问题)
之后在编写其他程序之前,需要保证其他的程序在运行时不会检测到中文乱码,所以事先创建一个过滤类,将编码都转为"utf-8":
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebFilter(filterName = "CharFilter", value = "/*", dispatcherTypes = {
DispatcherType.FORWARD, DispatcherType.REQUEST})
public class CharFilter implements Filter {
public void destroy() {
}
public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) resp;
if ("post".equalsIgnoreCase(request.getMethod())) {
request.setCharacterEncoding("utf-8");
}
chain.doFilter(req, resp);
}
public void init(FilterConfig config) throws ServletException {
}
}
import com.itheima.stu_system.domain.Student;
import java.io.*;
import java.util.ArrayList;
import java.util.List;
public class StudentDao {
public void writeAll(List<Student> studentList) {
try {
BufferedWriter bw = new BufferedWriter(new FileWriter("H:\\JAVA_WORD\\Web_newclass\\student_system\\students.txt"));
//遍历集合，得到每一个学生对象
for (Student student : studentList) {
//把学生对象的数据拼接成指定格式的字符串
String stu_text = student.getId()+","+student.getName()+","+student.getSex()+","+student.getAge()+","+student.getAddress()+","+student.getQQnumber()+","+student.getEmail();
//调用字符缓冲输出流对象的方法写数据
bw.write(stu_text);
bw.newLine();
bw.flush();
}
//释放资源
bw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public List<Student> findAll() {
List<Student> userList =new ArrayList<>();
try {
//因为暂时还没学那种可变的路径的写法,所以用绝对路径
File file = new File("H:\\JAVA_WORD\\Web_newclass\\student_system\\students.txt");
if (!file.exists()) {
file.createNewFile();
}
BufferedReader br = new BufferedReader(new FileReader("H:\\JAVA_WORD\\Web_newclass\\student_system\\students.txt"));
String readLine ;
//读取文件生成学生对象
while ((readLine=br.readLine()) != null) {
String[] split = readLine.split(",");
Student student = new Student();
student.setId(split[0]);
student.setName(split[1]);
student.setSex(split[2]);
student.setAge(split[3]);
student.setAddress(split[4]);
student.setQQnumber(split[5]);
student.setEmail(split[6]);
//将学生对象加入到集合中
userList.add(student);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
return null;
}
return userList;
}
}
ServiceServlet
做增删改查操作的地方,拿数据库的信息和前面传入的信息进行操作,之后数据库的返回数据库,传入的信息处理后返回一个返回值
import com.itheima.stu_system.domain.Student;
import java.util.List;
public class ServiceServlet {
StudentDao studentDao = new StudentDao();
/*
查找所有学生信息
*/
public List<Student> findAll() {
List<Student> studentList=studentDao.findAll();
return studentList;
}
/*
添加学生信息
*/
public List<Student> addStudent(Student student) {
List<Student> studentList = studentDao.findAll();
studentList.add(student);
studentDao.writeAll(studentList);
return studentList;
}
/*
删除学生信息
*/
public List<Student> remove(String id) {
StudentDao studentDao = new StudentDao();
List<Student> studentList = studentDao.findAll();
for (Student student : studentList) {
if (student.getId().equals(id)) {
studentList.remove(student);
break;
}
}
studentDao.writeAll(studentList);
return studentList;
}
/*
修改学生信息
*/
public List<Student> changeStudent(Student student) {
StudentDao studentDao = new StudentDao();
List<Student> students = studentDao.findAll();
String id = student.getId();
for (int i = 0; i < students.size(); i++) {
Student stu = students.get(i);
if (stu.getId().equals(id)) {
student.setName(stu.getName());
student.setId(id);
students.set(i, student);
break;
}
}
studentDao.writeAll(students);
return students;
}
/*
查重
*/
public boolean judge(String id) {
StudentDao studentDao = new StudentDao();
List<Student> students = studentDao.findAll();
for (Student student : students) {
if (student.getId().equals(id)) {
return false;
}
}
return true;
}
/*
根据查找对应学生对象
*/
public Student getStudent(String id) {
StudentDao studentDao = new StudentDao();
List<Student> all = studentDao.findAll();
for (Student student : all) {
if (id.equals(student.getId())) {
return student;
}
}
return new Student();
}
}
以上是针对全局的
accept页面:
在这里可以事先在idea设置里设置一下doGet和doPost方法
import com.itheima.stu_system.domain.Student;
import com.itheima.stu_system.utils.ServiceServlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.List;
public class AcceptServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//接收到查看学生信息的请求
//创建service对应类的对象
ServiceServlet serviceServlet = new ServiceServlet();
//获得session域的对象
HttpSession session = request.getSession();
//调用service对应类的有查找功能的方法
List<Student> studentList = serviceServlet.findAll();
//将上一步调用方法得到的学生列表的集合传入session域中
session.setAttribute("list", studentList);
//之后重定向回学生信息列表的页面
response.sendRedirect("http://localhost:2333${pageContext.request.contextPath}/studentlist.jsp");
}
}
添加学生信息
首先先要从request域中获取到学生的各项信息,之后进行判断信息是否合规,若不合规要弹回添加页面并提示用户,合规的话继续进行赋值,并在赋值后将学生对象传给serviceServlet进行添加处理,得到一个添加后的集合对象,将该对象传入域中,最后跳回学生列表页面
查重
在鼠标移开输入学号一栏时进行判断数据库中是否有一样的,之后传给添加学生的jsp页面
import com.itheima.stu_system.utils.ServiceServlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.ws.Service;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
public class DetectionServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
/*
查重复id
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
String num = request.getParameter("num");
ServiceServlet serviceServlet = new ServiceServlet();
Boolean flag = serviceServlet.judge(num);
response.getWriter().print(flag?1:0);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
添加学生信息
import com.itheima.stu_system.domain.Student;
import com.itheima.stu_system.utils.ServiceServlet;
import com.itheima.stu_system.utils.StudentDao;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.List;
/*
添加学生信息
*/
public class AddStudentServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Student student = new Student();
/*从request域中获取id之后,传入serviServlet中进行查重,若数据库中已有改id则返回页面提示用户该id不可用*/
String id = request.getParameter("num");
ServiceServlet serviceServlet = new ServiceServlet();
boolean flag = serviceServlet.judge(id);
if (!flag) {
request.setAttribute("msg", "该学号已存在，请确认后重试");
request.getRequestDispatcher("/addstu.jsp").forward(request, response);
} else {
//若不重复,从request域中获取各种name的value值,并将value值设置给学生对象各变量值
student.setId(id);
student.setName(request.getParameter("name"));
student.setSex(request.getParameter("sex"));
//判断年龄的数字或用户输入的格式是否正确,若不正确,则弹回原页面
if (!(Integer.parseInt(request.getParameter("age")) < 150 && Integer.parseInt(request.getParameter("age")) > 0)) {
request.setAttribute("msg", "请输入正确的年龄（阿拉伯数字）");
request.getRequestDispatcher("/addstu.jsp").forward(request,response);
} else {
//若正确,继续对学生对象进行赋值 student.setAge(request.getParameter("age"));
student.setAddress(request.getParameter("address"));
student.setQQnumber(request.getParameter("qq"));
student.setEmail(request.getParameter("email"));
//将封装好的学生对象通过方法交给ServiceServlet处理,返回一个进行添加操作后的学生集合
List<Student> studentList_add = serviceServlet.addStudent(student);
//获取session域的对象
HttpSession session = request.getSession();
//将返回的进行添加操作后的学生集合对象添加到session域中并返回(转发回)学生列表页面
session.setAttribute("list", studentList_add);
response.sendRedirect("http://localhost:2333/stu/studentlist.jsp");
}
}
}
}
修改学生信息
回显
import com.itheima.stu_system.domain.Student;
import com.itheima.stu_system.utils.ServiceServlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
/*
回显修改学生的信息
*/
public class BeforeChangeServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//从request域中获取到用户想要修改的学生的id
String id = request.getParameter("name");
ServiceServlet serviceServlet = new ServiceServlet();
//利用getStudent方法拿到数据库中的id对应的学生对象
Student student =serviceServlet.getStudent(id);
//获取context域的对象
ServletContext servletContext = request.getServletContext();
//将该学生对象的id传入context域中
servletContext.setAttribute("changeid",id);
//将student对象传入context域中
servletContext.setAttribute("student",student);
//重定向到修改页面(回显)
response.sendRedirect("http://localhost:2333/stu/update.jsp");
}
}
修改学生信息
import com.itheima.stu_system.domain.Student;
import com.itheima.stu_system.utils.ServiceServlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.List;
/*
修改学生信息
*/
public class ChangeServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Student student = new Student();
//获取context域对象
ServletContext servletContext = request.getServletContext();
//从context域中获取学生id
String changeid = (String) servletContext.getAttribute("changeid");
//对学生对象赋值
student.setId(changeid);
student.setName("待添加");
student.setSex(request.getParameter("sex"));
if (!(Integer.parseInt(request.getParameter("age")) < 150 && Integer.parseInt(request.getParameter("age")) > 0)) {
request.setAttribute("msg", "请输入正确的年龄（阿拉伯数字）");
request.getRequestDispatcher("/update.jsp");
}
student.setAge(request.getParameter("age"));
student.setAddress(request.getParameter("address"));
student.setQQnumber(request.getParameter("qq"));
student.setEmail(request.getParameter("email"));
ServiceServlet serviceServlet = new ServiceServlet();
//交给serviceServlet处理后得到一个修改后的集合对象
List<Student> studentList_change = serviceServlet.changeStudent(student);
HttpSession session = request.getSession();
//将集合对象传入session域中
session.setAttribute("list", studentList_change);
//重定向回学生列表页面
response.sendRedirect("http://localhost:2333/stu/studentlist.jsp");
}
}
删除学生信息
import com.itheima.stu_system.domain.Student;
import com.itheima.stu_system.utils.ServiceServlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.List;
/*
删除学生信息
*/
public class RemoveStudentsServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String id = request.getParameter("name");
ServiceServlet serviceServlet = new ServiceServlet();
//调用删除方法,传入id
List<Student> studentList = serviceServlet.remove(id);
HttpSession session = request.getSession();
//向域中传入删除信息后的集合,并转回学生列表页面
session.setAttribute("list",studentList);
request.getRequestDispatcher("studentlist.jsp").forward(request,response);
}
}