目录
《黑马旅游网》综合案例
一、启动项目
二、技术选型
Web层
Service层
Dao层
三、创建数据库
四、注册功能
功能分析
代码实现
校验用户名
校验密码
校验邮箱
异步(ajax)提交表单
后台代码实现
发送邮件
五、登录
六、退出
七、旅游线路名称查询
方式一:
方式二:配置maven快捷启动
-- 创建数据库
CREATE DATABASE travel;
-- 使用数据库
USE travel;
--创建表
复制提供好的sql
//校验用户名
function checkusername() {
//1.获取用户名值
var username = $("#username").val();
//2.定义正则
var reg_username = /^\w{8,20}$/;
//3.判断,给出提示信息
var flag = reg_username.test(username);
if (flag){
//用户名合法
$("#username").css("border","");
}else {
//用户名不合法,加一个红色边框
$("#username").css("border","1px solid red");
}
return true;
}
方法和校验用户名一样
//校验邮箱
function checkEmail(){
//1.获取邮箱
var email = $("#email").val();
//2.定义正则 itcast@163.com
var reg_email = /^\w+@\w+\.\w+$/;
//3.判断
var flag = reg_email.test(email);
if (flag){
$("#email").css("border","");
}else {
$("#email").css("border","1px solid red");
}
return flag;
}
在此使用异步提交表单是为了获取服务器响应的数据。因为我们前台使用的是html作为视图层,不能够直接从servlet相关的域对象获取值,只能通过ajax获取响应数据。
$(function () {
//当表单提交时,调用所有的校验方法
$("#registerForm").submit(function () {
//1.发送数据到服务器
if(checkUsername() && checkPassword() && checkEmail()){
//校验通过,发送ajax请求,提交表单的数据
$.post("registUserServlet",$(this).serialize(),function(data) {
//处理服务器响应的数据 data
});
}
//2.跳转页面
return false;
//如果这个方法没有返回值,或者返回为true,则表单提交,如果返回false,则表单不提交
});
编写RegistUserServlet
package cn.itcast.travel.web.servlet;
import cn.itcast.travel.domain.ResultInfo;
import cn.itcast.travel.domain.User;
import cn.itcast.travel.service.UserService;
import cn.itcast.travel.service.impl.UserServiceImpl;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.beanutils.BeanUtils;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;
@WebServlet("/registUserServlet")
public class RegistUserServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//1.获取数据
Map
//2.封装对象
User user = new User();
try {
BeanUtils.populate(user,map);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
//3.调用service完成注册
UserService service = new UserServiceImpl();
boolean flag = service.regist(user);
ResultInfo info = new ResultInfo();
//4.响应结果
if (flag){
//注册成功
info.setFlag(true);
}else {
//注册失败
info.setFlag(false);
info.setErrorMsg("注册失败!");
}
//将info对象序列化为json
ObjectMapper mapper = new ObjectMapper();
String json = mapper.writeValueAsString(info);
//将json数据写回客户端
//设置content-type
response.setContentType("application/json;charset=utf-8");
response.getWriter().write(json);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
}
编写UserService以及UserServiceImpl
UserService
package cn.itcast.travel.service;
import cn.itcast.travel.domain.User;
public interface UserService {
/**
* 注册用户
* @param user
* @return
*/
boolean regist(User user);
}
UserServiceImpl
package cn.itcast.travel.service.impl;
import cn.itcast.travel.dao.UserDao;
import cn.itcast.travel.dao.impl.UserDaoImpl;
import cn.itcast.travel.domain.User;
import cn.itcast.travel.service.UserService;
public class UserServiceImpl implements UserService {
private UserDao userDao = new UserDaoImpl();
/**
* 注册用户
* @param user
* @return
*/
@Override
public boolean regist(User user) {
//1.根据用户名查询用户对象
User u = userDao.findByUsername(user.getUsername());
//判断u是否为null
if (u != null){
//用户名存在,注册失败
return false;
}
//2.保存用户信息
userDao.save(user);
return true;
}
}
编写UserDao以及UserDaoImpl
UserDao
package cn.itcast.travel.dao;
import cn.itcast.travel.domain.User;
public interface UserDao {
/**
* 根据用户名查询用户信息
* @param username
* @return
*/
public User findByUsername(String username);
/**
* 用户保存
* @param user
*/
public void save(User user);
}
UserDaoImpl
package cn.itcast.travel.dao.impl;
import cn.itcast.travel.dao.UserDao;
import cn.itcast.travel.domain.User;
import cn.itcast.travel.util.JDBCUtils;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
public class UserDaoImpl implements UserDao {
private JdbcTemplate template = new JdbcTemplate(JDBCUtils.getDataSource());
@Override
public User findByUsername(String username) {
User user = null;
try {
//1.定义sql
String sql = "select * from tab_user where username = ?";
//2.执行sql
user = template.queryForObject(sql,new BeanPropertyRowMapper
} catch (DataAccessException e) {
e.printStackTrace();
}
return user;
}
@Override
public void save(User user) {
//1.定义sql
String sql = "insert into tab_user(username,password,name,birthday,sex,telephone,email) values(?,?,?,?,?,?,?)";
//2.执行sql
template.update(sql,user.getUsername(),
user.getPassword(),
user.getName(),
user.getBirthday(),
user.getSex(),
user.getTelephone(),
user.getEmail()
);
}
}
验证码
//验证校验
String check = request.getParameter("check");
//从session中获取验证码
HttpSession session =request.getSession();
String checkcode_server = (String) session.getAttribute("CHECKCODE_SERVER");
//为了保证验证码只能用一次
session.removeAttribute("CHECKCODE_SERVER");
//比较
if (checkcode_server == null || !checkcode_server.equalsIgnoreCase(check)){
//验证码错误
ResultInfo info = new ResultInfo();
//验证失败
info.setFlag(false);
info.setErrorMsg("验证码错误");
//将info对象序列化为json
ObjectMapper mapper = new ObjectMapper();
String json = mapper.writeValueAsString(info);
//将json数据写回客户端
//设置content-type
response.setContentType("application/json;charset=utf-8");
response.getWriter().write(json);
return;
}
register.html
$.post("registUserServlet",$(this).serialize(),function (data) {
//处理服务器响应的数据 data
if(data.flag){
//注册成功,跳转成功页面
location.href="register_ok.html";
}else {
//注册失败,给errorMsg添加提示信息
$("#errorMsg").html(data.errorMsg);
}
});
为什么要进行邮件激活?为了保证用户填写的邮箱是正确的。将来可以推广一些宣传信息,到用户邮箱中。
要在MailUtils中设置自己的邮箱账号和密码(授权码)
邮件工具类:MailUtils,调用其中sendMail方法可以完成邮件发送
UserDaoImpl
package cn.itcast.travel.web.servlet;
import cn.itcast.travel.service.UserService;
import cn.itcast.travel.service.impl.UserServiceImpl;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet("/activeUserServlet")
public class ActiveUserServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//1.获取激活码
String code = request.getParameter("code");
if (code != null){
//2.调用service完成激活
UserService service = new UserServiceImpl();
boolean flag = service.active(code);
//3.判断标记
String msg = null;
if (flag){
//激活成功
msg = "激活成功,请登录";
}else {
//激活失败
msg = "激活失败,请联系管理员!";
}
response.setContentType("text/html;charset=utf-8");
response.getWriter().write(msg);
}
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
}
header.html代码
Servlet代码
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//从session中获取登录用户
Object user = request.getSession().getAttribute("user");
//将user写回客户端
ObjectMapper mapper = new ObjectMapper();
response.setContentType("application/json;charset=utf-8");
mapper.writeValue(response.getOutputStream(),user);
}
什么叫做登录了?session中有user对象。
实现步骤:
1.访问servlet,将session销毁
2.跳转到登录页面
代码实现:
Header.html
Servlet
在header.html中
$("#search-button").click(function () {
//线路名称
var rname = $("#search_input").val();
var cid = getParameter("cid");
// 跳转路径 http://localhost/travel/route_list.html?cid=5,拼接上rname=xxx
location.href="http://localhost/travel/route_list.html?cid="+cid+"&rname="+rname;
});
在route_list.html
var cid = getParameter("cid");
//获取rname的参数值
var rname = getParameter("rname");
//判断rname如果不为null或者""
if(rname){
//url解码
rname = window.decodeURIComponent(rname);
}