网站用户注册：
主要实现如下两个功能:
1、用户在网站上注册完成后给用户发一封邮件。
2、用户通过邮件激活后才可以登录。
思路：
首先需要一个思路:
用户在前台点击注册，向controller提交请求，把用户提交过来的信息封装成一个user(需要的信息有name,pwd,email这3个是用户填写的,我们帮用户生成的是id和一个邮箱激活链接地址的唯一标识码acode，还要一个用来识别用户是否已经点击链接的变量active)。 如果用户点击了链接后，我们会将用户的状态修改为true【对应的“”1”】，当我们登入时，会根据返会的actived状态，来判断用户是否已经激活了账户，若未激活，则登录不进去，否则，则可以；
并且不能使用该邮箱重复注册用户，所以每次注册用户时，都会先通过邮箱查询该邮箱是否已经注册过了，没有，则可以注册，否则不行。
用户点了激活链接后，再自动跳转到登录页面！
1：.POM.xml中导入javaxmail需要的依赖
2：controller类
package com.chinasofti.controller;
import com.chinasofti.pojo.User;
import com.chinasofti.service.UserService;
import com.chinasofti.util.EmailUtils;
import com.chinasofti.util.GenerateLinkUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.UUID;
@Controller
@RequestMapping("email")
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("toregist")
public String toemail() {
return "regist";
}
@RequestMapping("login")
public String login(){
return "login";
}
@RequestMapping("/regist")
public void regist(User user, HttpSession httpSession, HttpServletResponse response) {
user.setActivated(false); //刚注册默认是没有激活状态
user.setCodeUrl(UUID.randomUUID().toString());
//注册用户
User user1=userService.findUserByEmail(user.getEmail());
if (user1==null) {
userService.saveUser(user);
} else {
throw new RuntimeException("该邮箱已注册");
}
//查看是否注册成功，为实体类User的id赋值
User findUser = userService.findUserByEmail(user.getEmail());
if (findUser != null) {
user.setId(findUser.getId());
} else {
throw new RuntimeException("注册用户失败");
}
//注册成功后，发送账户激活链接
httpSession.setAttribute("user", user);
EmailUtils.sendAccountActivateEmail(user);
try {
response.setContentType("text/html;charset=utf-8");
response.getWriter().write("激活邮件已经发送，请注意提醒查收");
} catch (IOException e) {
e.printStackTrace();
}
}
@RequestMapping("/activate")
public void activate(String id, String checkCode, HttpServletResponse response) {
int idInt = Integer.parseInt(id);
//根据用户id查找用户
User user = userService.findUserById(idInt);
//验证无误，状态更改为1，即激活
if (GenerateLinkUtils.verifyCheckcode(user, checkCode)) {
//修改状态
int activated = 1;
userService.updateActivated(activated, idInt);
user.setActivated(true);
try {
response.setContentType("text/html;charset=utf-8");
response.getWriter().write("恭喜，激活成功！");
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
3：service类
package com.chinasofti.service;
import com.chinasofti.dao.UserDao;
import com.chinasofti.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
@Service
public class UserService {
@Autowired
private UserDao userDao;
public void saveUser(User user) {
userDao.saveUser(user);
}
public User findUserByEmail(String email) {
return userDao.findUserByEmail(email);
}
public User findUserById(int idInt) {
return userDao.findUserById(idInt);
}
public void updateActivated(int activated, int idInt) {
userDao.updateActivated(activated,idInt);
}
}
4：dao层
package com.chinasofti.dao;
import com.chinasofti.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
@Repository
public class UserDao {
@Autowired
private UserMapper userMapper;
public User findUserByEmail(String email) {
return userMapper.findUserByEmail(email);
}
public User findUserById(int idInt) {
return userMapper.findUserById(idInt);
}
public void saveUser(User user) {
userMapper.saveUser(user);
}
public void updateActivated(int activated, int idInt) {
userMapper.updateActivated(activated,idInt);
}
}
5：register.jsp页面
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>