JSP删除增加的问题
新手上路，做个表格，没有连接数据库
首先，我表格里有10条数据
public class VMDB {
static List<Student> stus = new ArrayList<Student>();
static {
stus.add(new Student(1,"刘睿","1234"));
stus.add(new Student(1,"刘睿","1234"));
stus.add(new Student(1,"刘睿","1234"));
stus.add(new Student(1,"刘睿","1234"));
stus.add(new Student(1,"刘睿","1234"));
stus.add(new Student(1,"刘睿","1234"));
stus.add(new Student(1,"刘睿","1234"));
stus.add(new Student(1,"刘睿","1234"));
stus.add(new Student(1,"刘睿","1234"));
stus.add(new Student(1,"刘睿","1234"));
}
public static List<Student> findAll(){
return stus;
}
通过stus传的，然后通过java页面的request传到jsp页面去
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
req.setAttribute("abc",VMDB.findAll() );
req.getRequestDispatcher("/list.jsp").forward(req, resp);
jsp页面是这么接收的
List<Student> stus =(List<Student>) request.getAttribute("abc") ;
我就是想问，我表格是想通过选择复选框删除，可以选择多个，我看过网上的说吧name设置为一样的，再接收，接收之后呢？然后这个不在jsp页面，在java页面可以写吗？最好给个简易的代码。增加一个用户，用什么增加，这个我是新手，不太明白，虽然学过C语言，但是觉得和java不一样 JSP
[解决办法]
算了，在这里给你把！
VMDB
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class VMDB {
static List<Student> stus = new ArrayList<Student>();
static {
for(int i = 0 ; i < 10 ; i++){
stus.add(new Student(i, "刘睿" + i, "123" + i));
}
}
public static List<Student> findAll() {
return stus;
}
public static void add(Student s){
stus.add(s);
}
public static void deleteById(Integer id){
Iterator<Student> it = stus.iterator();
while(it.hasNext()){
Student s = it.next();
if(s.getId().equals(id)){
it.remove();
}
}
}
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setAttribute("stus", VMDB.findAll());
request.getRequestDispatcher("/list.jsp").forward(request, response);
}
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>list</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="servlet/DeleteServlet" method="post">
<table width="100%" border="1">
<tr>
<td colspan="4">
<a href="add.jsp">新增</a>
<a href="javascript:void(0)" onclick="deleteSelect()">删除选中</a>
</td>
</tr>
<c:forEach var="stu" items="${stus}">
<tr>
<td>${stu.id}</td>
<td>${stu.name}</td>
<td>${stu.phone}</td>
<td>
<input type="checkbox" name="id" value="${stu.id}">
</td>
</tr>
</c:forEach>
</table>
</form>
</body>
<script type="text/javascript">
function deleteSelect(){
if(confirm("是否确定删除？")){
document.forms[0].submit();
}
}
</script>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>add</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="servlet/AddServlet" method="post">
<table width="100%" border="1">
<tr>
<td>ID</td>
<td>
<input name="id" type="text">
</td>
</tr>
<tr>
<td>姓名</td>
<td>
<input type="text" name="name">
</td>
</tr>
<tr>
<td>电话</td>
<td>
<input type="text" name="phone">
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="保存">
</td>
</tr>
</table>
</form>
</body>
</html>
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String id = request.getParameter("id");
String name = request.getParameter("name");
String phone = request.getParameter("phone");
Student stu = new Student(Integer.valueOf(id), name, phone);
VMDB.add(stu);
response.sendRedirect("../servlet/ListServlet");
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String[] ids = request.getParameterValues("id");
for(String id : ids){
VMDB.deleteById(Integer.valueOf(id));
}
response.sendRedirect("../servlet/ListServlet");
}
