需求介绍—开发注册功能
首先访问注册页面—点击顶部的链接,打开注册页面
提交注册数据
- 通过表单提交数据
- 服务端验证账号是否存在,邮箱是否已经注册
- 服务端发送激活邮件
激活注册账号
点击邮件中的链接,访问服务端的激活服务
实现代码
按着需求一个个完成。
首先访问注册页面
只是打开页面,没有业务,访问数据库。只需要请求提交给Controller
,然后调用模板,模板做出相应就可以了
package com.nowcoder.community.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class LoginController {
@RequestMapping(path = "/register", method = RequestMethod.GET)
public String getRegisterpage() {
return "/site/register";
}
}
然后就去处理对应的"/site/register"
进行模板改造就可以了。同时你要在index.html
改一下链接就好了。
效果如下:
再完成提交注册数据
首先因为在这个过程中经常会到判断字符串,集合等常用的数据空值的情况,我们引入以下包
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
然后在application.properties
配置我们网站的域名:
# community
community.path.domain=http://localhost:8080
然后我们写一个工具类CommunityUtil
用来提供两个方法支持我们的注册功能,比方生成随机字符串这个方法
package com.nowcoder.community.util;
import org.apache.commons.lang3.StringUtils;
import org.springframework.util.DigestUtils;
import java.util.UUID;
public class CommunityUtil {
// 生成随机字符串
public static String generateUUID() {
return UUID.randomUUID().toString().replaceAll("-", "");
}
// MD5加密
// hello -> abc123def456
// hello + 3e4a8 -> abc123def456abc
public static String md5(String key) {
if (StringUtils.isBlank(key)) {
return null;
}
return DigestUtils.md5DigestAsHex(key.getBytes());
}
}
因为我们的注册是针对用户表的操作,所以逻辑应该写在UserService
里面
package com.nowcoder.community.service;
import com.nowcoder.community.dao.UserMapper;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.util.CommunityConstant;
import com.nowcoder.community.util.CommunityUtil;
import com.nowcoder.community.util.MailClient;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
@Service
public class UserService implements CommunityConstant {
@Autowired
private UserMapper userMapper;
@Autowired
private MailClient mailClient;
@Autowired
private TemplateEngine templateEngine;
@Value("${community.path.domain}")
private String domain;
@Value("${server.servlet.context-path}")
private String contextPath;
public User findUserById(int id) {
return userMapper.selectById(id);
}
public Map<String, Object> register(User user) {
Map<String, Object> map = new HashMap<>();
// 空值处理
if (user == null) {
throw new IllegalArgumentException("参数不能为空!");
}
if (StringUtils.isBlank(user.getUsername())) {
map.put("usernameMsg", "账号不能为空!");
return map;
}
if (StringUtils.isBlank(user.getPassword())) {
map.put("passwordMsg", "密码不能为空!");
return map;
}
if (StringUtils.isBlank(user.getEmail())) {
map.put("emailMsg", "邮箱不能为空!");
return map;
}
// 验证账号
User u = userMapper.selectByName(user.getUsername());
if (u != null) {
map.put("usernameMsg", "该账号已存在!");
return map;
}
// 验证邮箱
u = userMapper.selectByEmail(user.getEmail());
if (u != null) {
map.put("emailMsg", "该邮箱已被注册!");
return map;
}
// 注册用户
user.setSalt(CommunityUtil.generateUUID().substring(0, 5));
user.setPassword(CommunityUtil.md5(user.getPassword() + user.getSalt()));
user.setType(0);
user.setStatus(0);
user.setActivationCode(CommunityUtil.generateUUID());
user.setHeaderUrl(String.format("http://images.nowcoder.com/head/%dt.png", new Random().nextInt(1000)));
user.setCreateTime(new Date());
userMapper.insertUser(user);
// 激活邮件
Context context = new Context();
context.setVariable("email", user.getEmail());
// http://localhost:8080/community/activation/101/code
String url = domain + contextPath + "/activation/" + user.getId() + "/" + user.getActivationCode();
context.setVariable("url", url);
String content = templateEngine.process("/mail/activation", context);
mailClient.sendMail(user.getEmail(), "激活账号", content);
return map;
}
public int activation(int userId, String code) {
User user = userMapper.selectById(userId);
if (user.getStatus() == 1) {
return ACTIVATION_REPEAT;
} else if (user.getActivationCode().equals(code)) {
userMapper.updateStatus(userId, 1);
return ACTIVATION_SUCCESS;
} else {
return ACTIVATION_FAILURE;
}
}
}
那么业务写完了,我们需要继续在LoginController
里面写前后端交互
package com.nowcoder.community.controller;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.service.UserService;
import com.nowcoder.community.util.CommunityConstant;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import java.util.Map;
@Controller
public class LoginController implements CommunityConstant {
@Autowired
private UserService userService;
@RequestMapping(path = "/register", method = RequestMethod.GET)
public String getRegisterPage() {
return "/site/register";
}
@RequestMapping(path = "/login", method = RequestMethod.GET)
public String getLoginPage() {
return "/site/login";
}
@RequestMapping(path = "/register", method = RequestMethod.POST)
public String register(Model model, User user) {
Map<String, Object> map = userService.register(user);
if (map == null || map.isEmpty()) {
model.addAttribute("msg", "注册成功,我们已经向您的邮箱发送了一封激活邮件,请尽快激活!");
model.addAttribute("target", "/index");
return "/site/operate-result";
} else {
model.addAttribute("usernameMsg", map.get("usernameMsg"));
model.addAttribute("passwordMsg", map.get("passwordMsg"));
model.addAttribute("emailMsg", map.get("emailMsg"));
return "/site/register";
}
}
}
处理激活账号的事情
那么我们应该在UserService
里增加方法。但是因为这个情况有很多的情况,比方说激活成功,重复激活,激活失败,所以我们定义一些常量接口CommunityConstant
。
package com.nowcoder.community.util;
public interface CommunityConstant {
/**
* 激活成功
*/
int ACTIVATION_SUCCESS = 0;
/**
* 重复激活
*/
int ACTIVATION_REPEAT = 1;
/**
* 激活失败
*/
int ACTIVATION_FAILURE = 2;
/**
* 默认状态的登录凭证的超时时间
*/
int DEFAULT_EXPIRED_SECONDS = 3600 * 12;
/**
* 记住状态的登录凭证超时时间
*/
int REMEMBER_EXPIRED_SECONDS = 3600 * 24 * 100;
}
那么现在写对应的方法了
package com.nowcoder.community.service;
import com.nowcoder.community.dao.UserMapper;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.util.CommunityConstant;
import com.nowcoder.community.util.CommunityUtil;
import com.nowcoder.community.util.MailClient;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
@Service
public class UserService implements CommunityConstant {
@Autowired
private UserMapper userMapper;
@Autowired
private MailClient mailClient;
@Autowired
private TemplateEngine templateEngine;
@Value("${community.path.domain}")
private String domain;
@Value("${server.servlet.context-path}")
private String contextPath;
public User findUserById(int id) {
return userMapper.selectById(id);
}
public Map<String, Object> register(User user) {
Map<String, Object> map = new HashMap<>();
// 空值处理
if (user == null) {
throw new IllegalArgumentException("参数不能为空!");
}
if (StringUtils.isBlank(user.getUsername())) {
map.put("usernameMsg", "账号不能为空!");
return map;
}
if (StringUtils.isBlank(user.getPassword())) {
map.put("passwordMsg", "密码不能为空!");
return map;
}
if (StringUtils.isBlank(user.getEmail())) {
map.put("emailMsg", "邮箱不能为空!");
return map;
}
// 验证账号
User u = userMapper.selectByName(user.getUsername());
if (u != null) {
map.put("usernameMsg", "该账号已存在!");
return map;
}
// 验证邮箱
u = userMapper.selectByEmail(user.getEmail());
if (u != null) {
map.put("emailMsg", "该邮箱已被注册!");
return map;
}
// 注册用户
user.setSalt(CommunityUtil.generateUUID().substring(0, 5));
user.setPassword(CommunityUtil.md5(user.getPassword() + user.getSalt()));
user.setType(0);
user.setStatus(0);
user.setActivationCode(CommunityUtil.generateUUID());
user.setHeaderUrl(String.format("http://images.nowcoder.com/head/%dt.png", new Random().nextInt(1000)));
user.setCreateTime(new Date());
userMapper.insertUser(user);
// 激活邮件
Context context = new Context();
context.setVariable("email", user.getEmail());
// http://localhost:8080/community/activation/101/code
String url = domain + contextPath + "/activation/" + user.getId() + "/" + user.getActivationCode();
context.setVariable("url", url);
String content = templateEngine.process("/mail/activation", context);
mailClient.sendMail(user.getEmail(), "激活账号", content);
return map;
}
public int activation(int userId, String code) {
User user = userMapper.selectById(userId);
if (user.getStatus() == 1) {
return ACTIVATION_REPEAT;
} else if (user.getActivationCode().equals(code)) {
userMapper.updateStatus(userId, 1);
return ACTIVATION_SUCCESS;
} else {
return ACTIVATION_FAILURE;
}
}
}
那么方法写好了,需要在Controller
调用
package com.nowcoder.community.controller;
import com.nowcoder.community.entity.User;
import com.nowcoder.community.service.UserService;
import com.nowcoder.community.util.CommunityConstant;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import java.util.Map;
@Controller
public class LoginController implements CommunityConstant {
@Autowired
private UserService userService;
@RequestMapping(path = "/register", method = RequestMethod.GET)
public String getRegisterPage() {
return "/site/register";
}
@RequestMapping(path = "/login", method = RequestMethod.GET)
public String getLoginPage() {
return "/site/login";
}
@RequestMapping(path = "/register", method = RequestMethod.POST)
public String register(Model model, User user) {
Map<String, Object> map = userService.register(user);
if (map == null || map.isEmpty()) {
model.addAttribute("msg", "注册成功,我们已经向您的邮箱发送了一封激活邮件,请尽快激活!");
model.addAttribute("target", "/index");
return "/site/operate-result";
} else {
model.addAttribute("usernameMsg", map.get("usernameMsg"));
model.addAttribute("passwordMsg", map.get("passwordMsg"));
model.addAttribute("emailMsg", map.get("emailMsg"));
return "/site/register";
}
}
// http://localhost:8080/community/activation/101/code
@RequestMapping(path = "/activation/{userId}/{code}", method = RequestMethod.GET)
public String activation(Model model, @PathVariable("userId") int userId, @PathVariable("code") String code) {
int result = userService.activation(userId, code);
if (result == ACTIVATION_SUCCESS) {
model.addAttribute("msg","激活成功,您的账号已经可以正常使用了");
model.addAttribute("target","/login");
}
else if (result == ACTIVATION_REPEAT) {
model.addAttribute("msg","无效的操作,该账号已经激活过了");
model.addAttribute("target","/index");
}
else {
model.addAttribute("msg","激活失败,您提供的激活码不正确");
model.addAttribute("target","/index");
}
return "/site/operate-result";
}
}