实体类：User
package cn.bdqn.pojo; public class User { private String userName; private String password; private String position; private String email; public User(String userName,String password,String position,String email){ super(); this.userName = userName; this.password = password; this.position = position; this.email = email; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getPosition() { return position; } public void setPosition(String position) { this.position = position; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } }
控制器：注意@Controller不加就不是处理器
@Controller @RequestMapping("/user")//项目部署的根目录http://localhost:8080/springmvc2/user/list public class UserController { private Map<String, User> userList= new HashMap<String, User>(); //添加数据 public UserController() { userList.put("hl", new User("hl","123456","部门经理","hanlu@bdqn.cn")); userList.put("zs", new User("zs","123456","质量经理","zhangsan@bdqn.cn")); userList.put("zw", new User("zw","123456","开发工程师","zhangwei@bdqn.cn")); userList.put("ly", new User("ly","123456","实施顾问","liyu@bdqn.cn")); } //查询 @RequestMapping(value="/userlist",method=RequestMethod.GET) public String list(Model model){
//把userList的集合对应到key(userlist) model.addAttribute("userlist",userList); return "user/userlist";//逻辑视图名 } }
建立页面userlist.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>list</title> </head> <body> <c:forEach items="${userlist}" var="um">//不能用user -----${um.value.userName} -----${um.value.password} -----${um.value.position} -----${um.value.email} <br/> </c:forEach> </body> </html>
方法二：用ArrayList方法
@RequestMapping(value="/userlist",method=RequestMethod.GET) public String list(HttpServletRequest request){ List<User> userList = new ArrayList<User>(); userList.add(new User("1","T01","111111","tO1@bdqn.cn")); userList.add(new User("2","T02","222222","tO2@bdqn.cn")); userList.add(new User("3","T03","333333","tO3@bdqn.cn")); request.setAttribute("userList", userList); return "user/userlist"; }
展示页面就得改成这样
<c:forEach items="${userList }" var="ul"> id:${user.id }<br/> userName:${user.userName }<br/> password:${user.password }<br/> email:${user.email }<br/> </c:forEach>