ssm框架
controller：
package com.sgcc.controller;
import java.util.ArrayList;
import java.util.List;
import org.omg.CORBA.PUBLIC_MEMBER;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import com.sgcc.entity.User;
@Controller
@RequestMapping("/user")//窄化--分模块开发，团队协作-- 注意页面跳转 加/ 或视图解析器
public class UserController {
private List<User> list = new ArrayList<User>();
public UserController() {
list.add(new User(1,"张三","1111"));
list.add(new User(2,"李四","1111"));
list.add(new User(3,"王五","3333"));
}
//查询所有用户
@RequestMapping("/list")
public String list(ModelMap map){
map.addAttribute("list", list);
//System.out.println(list.toString());
return "/list.jsp";
}
//添加用户
@RequestMapping("/add")
public String add(User user){
user.setId(list.get(list.size()-1).getId()+1);
list.add(user);
//return "/user/list.do"
return "redirect:list.do";
}
//删除用户
@RequestMapping("/delete")
public String delte(int id){
for (int i = 0; i < list.size(); i++) {
if (list.get(i).getId()==id) {
list.remove(i);
break;
}
}
return "redirect:list.do";
}
//传统url delete？id=123；
//restful风格的开发 delete/123
//url /user/123/delete1
@RequestMapping("/{id}/delete1")
public String delete1(@PathVariable int id){
for (int i = 0; i < list.size(); i++) {
if (list.get(i).getId()==id) {
list.remove(i);
break;
}
}
return "redirect:/user/list.do";
}
}
前端：
<%@ 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>My JSP ‘index.jsp‘ starting page</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>
<table width="80%" align="center">
<tr>
<td colspan="4" align="right"><a href="add.jsp">添加</a></td>
</tr>
<tr>
<td>编号</td>
<td>姓名</td>
<td>密码</td>
<td>操作</td>
</tr>
<c:forEach items = "${list }" var="bean">
<tr>
<td>${bean.id }</td>
<td>${bean.name }</td>
<td>${bean.pwd }</td>
<td><a href="user/delete.do?id=${bean.id }">删除</a>
<td><a href="user/${bean.id }/delete1.do">删除2</a>
</td>
</tr>
</c:forEach>
</table>
</body>
</html>
时间： 2024-12-24 09:42:50