SSM框架重构达内NETCTOSS项目——(2)登录功能

实现NETCTOSS登录功能

1. 创建用户表：

   • DROP TABLE IF EXISTS `admin_info`;
     create table admin_info(
     	admin_id		int not null auto_increment,
     	admin_code		varchar(30) not null,
     	password		varchar(30) not null,
     	name			varchar(30) not null,
     	telephone		varchar(15),
     	email			varchar(50),
     	enrolldate		datetime default now() not null,
     	primary key (admin_id)
     );
     
     insert into 
     	admin_info 
     values 
     	(null,'caocao','123','CaoCao','123456789','[email protected]',default);
     
     

     
     
2. 打开登录页面：

   1. 创建web.LoginController：

      • package web;
        
        @Controller
        @RequestMapping("/login")
        public class LoginController {
        	
        	@Resource
        	private LoginService loginService;
        	
        	@RequestMapping("/toLogin.do")
        	public String toLogin() {
        		return "main/login";
        	}
        }

   2. 创建登录页面：

      • 导入项目的图片和样式文件
   • • 创建登录页面：WEB-INF/jsp/main/login.jsp

       • <%@ page language="java" contentType="text/html; charset=UTF-8"
             pageEncoding="UTF-8"%>
         
         
         
         
         
         
         
         
         
         
         
         
         账号：
         
         30长度的字母、数字和下划线
         
         
         密码：
         
         30长度的字母、数字和下划线
         
         
         验证码：
         
         
         
         
         
         
         
         
         
         
         
         
         
         
         

         
         
     • 测试打开登录页面：
       • 
         
3. 实现登录验证：
   • 创建实体类Admin

     • package entity;
       public class Admin implements Serializable {
       	
       	private Integer adminId;
       	private String adminCode;
       	private String password;
       	private String name;
       	private String telephone;
       	private String email;
       	private Timestamp enrolldate;
       }

     • Generate Getters and Setters
     • Generate hashCode() and equals()
     • Generate toString()
   • (添加Mapper接口)数据访问接口：AdminDao：

     • package dao;
       
       import entity.Admin;
       
       public interface AdminDao {
       	
       	Admin findByCode(String adminCode);
       	
       }

       
       
   • 在Mapper(映射文件)配置添加SQL, AdminMapper.xml：

     • 
       	
       	
       		select 
       			admin_id	as adminId,
       			admin_code 	as adminCode,
       			password 	as password,
       			name 		as name,
       			telephone 	as telephone,
       			email 		as email,
       			enrolldate 	as enrolldate
       		from 
       			admin_info
       		where 
       			admin_code = #{adminCode}
       	
       	
       

       
       
   • 定义业务接口(声明软件业务功能方法 )LoginService:定义登陆功能方法：
     • 校验管理员账号和密码：

     • public interface LoginService {
       	
       	/**
       	 * 校验管理员账号和密码
       	 * @param adminCode	账号
       	 * @param password	密码
       	 * @return		验证通过时返回管理员对象
       	 * @throws AdminCodeException
       	 * @throws PasswordException
       	 */
       	Admin login(String adminCode, String password) throws AdminCodeException, PasswordException;
       	
       }

       
       
   • 创建异常类AdminCodeException,PasswordException：
     • public class AdminCodeException extends RuntimeException {}
     • public class PasswordException extends RuntimeException {}
   • 创建登录业务组件LoginServiceImpl：

     • @Service("LoginService")
       public class LoginServiceImpl implements LoginService {
       
       	@Resource
       	private AdminDao adminDao;
       	
       	public Admin login(String adminCode, String password) throws AdminCodeException, PasswordException {
       		
       		Admin admin = adminDao.findByCode(adminCode);
       		if(admin==null) {
       			throw new AdminCodeException("账号错误");
       		} else if(!admin.getPassword().equals(password)) {
       			throw new PasswordException("密码错误");
       		} else {
       			return admin;
       		}
       		
       	}
       
       }

       
       
   • 在LoginController中增加登录验证的方法:

     • @RequestMapping("/toIndex.do")
       	public String toIndex() {
               return "main/index";
           }
       	
       	@RequestMapping("/checkLogin.do")
       	public String checkLogin(String adminCode, String password, ModelMap model, HttpSession session){
       		
       		try {
       			Admin admin = loginService.login(adminCode, password);
       			session.setAttribute("admin", admin);
       		} catch (AdminCodeException e) {
       			model.addAttribute("message", e.getMessage());
                   model.addAttribute("adminCode", adminCode);
                   model.addAttribute("password", password);
                   return "main/login";
       		} catch (PasswordException e) {
                   model.addAttribute("message", e.getMessage());
                   model.addAttribute("adminCode", adminCode);
                   model.addAttribute("password", password);
                   return "main/login";
       		}
       		
       		return "redirect:toIndex.do";
       		
       	}
       

       
       
   • 修改登录页面：
     • 
       
   • 测试打开登录页面(验证账号/密码功能)
     • 
       
     • 
       
   • 创建netctoss主页：WEB-INF/jsp/main/index.jsp

     • <%@page pageEncoding="utf-8"%>
       <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
       
       
       
       
       
       
       
       
       
       
       
       
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
       
       
       
       
       
       

       
       
   • 测试打开登录页面(账号密码正确)：重定向到首页
     •