目录
1 基于Seesion实现短信登录
1.1 发送短信验证码
1.2 登录功能
2 使用Redis进行短信验证码校验登录
2.1 Seesion方法存在的问题
2.2 发送短信验证码
2.3 验证码校验及登录功能
3.拦截器优化
发送验证码请求路径 /user/code
Controller层
/**
* 发送手机验证码
*/
@PostMapping("code")
public Result sendCode(@RequestParam("phone") String phone, HttpSession session) {
// TODO 发送短信验证码并保存验证码
return userService.sendCode(phone,session);
}
Service层及Service实现
public interface IUserService extends IService {
Result sendCode(String phone, HttpSession session);
}
package com.hmdp.service.impl;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RegexPatterns;
import com.hmdp.utils.RegexUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.catalina.manager.util.SessionUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.servlet.http.HttpSession;
import static com.hmdp.utils.SystemConstants.USER_NICK_NAME_PREFIX;
/**
*
* 服务实现类
*
*
* @author 虎哥
* @since 2021-12-22
*/
@Slf4j
@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {
@Override
public Result sendCode(String phone, HttpSession session) {
//1.校验手机号
if (RegexUtils.isPhoneInvalid(phone)){
//2.如果错误,返回错误信息
return Result.fail("手机号码格式错误!");
}
//3.生成验证码
String code = RandomUtil.randomNumbers(6);
//4.保存验证码到session中去
session.setAttribute("code",code);
//5.发送验证码
log.debug("手机验证码为:{}",code);
return Result.ok();
}
}
请求路径:user/login
Controller层
/**
* 登录功能
* @param loginForm 登录参数,包含手机号、验证码;或者手机号、密码
*/
@PostMapping("/login")
public Result login(@RequestBody LoginFormDTO loginForm, HttpSession session){
// TODO 实现登录功能
return userService.login(loginForm,session);
}
Service层及Service实现
public interface IUserService extends IService {
Result login(LoginFormDTO loginForm, HttpSession session);
}
package com.hmdp.service.impl;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RegexPatterns;
import com.hmdp.utils.RegexUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.catalina.manager.util.SessionUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import javax.servlet.http.HttpSession;
import static com.hmdp.utils.SystemConstants.USER_NICK_NAME_PREFIX;
/**
*
* 服务实现类
*
*
* @author 虎哥
* @since 2021-12-22
*/
@Slf4j
@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {
@Override
public Result login(LoginFormDTO loginForm, HttpSession session) {
String phone = loginForm.getPhone();
//1.校验手机号
if (RegexUtils.isPhoneInvalid(phone)){
//2.如果错误,返回错误信息
return Result.fail("手机号码格式错误!");
}
//2.校验验证码
String code = loginForm.getCode();
String sendCode = (String) session.getAttribute("code");
if (code != null || !code.equals(sendCode)){
//验证码不一致
Result.fail("验证码错误!");
}
//验证码相同,查询手机号
User user = query().eq("phone", loginForm.getPhone()).one();
if (user == null) {
//用户不存在,创建一个新用户并且保存到数据库中
user = createNewUser(phone);
}
//用户存在,存入Session
session.setAttribute("user", BeanUtil.copyProperties(user,UserDTO.class));
return Result.ok();
}
private User createNewUser(String phone) {
//1.创建用户
User user = new User();
user.setPhone(phone);
user.setNickName(USER_NICK_NAME_PREFIX+RandomUtil.randomString(10));
//2.保存用户
save(user);
return user;
}
}
1.3 登录校验功能(配置拦截器)
编写拦截器类:
package com.hmdp.utils;
import com.hmdp.dto.UserDTO;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/**
* @Author 华子
* @Date 2022/11/20 17:30
* @Version 1.0
*/
public class LoginInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//1.获session
HttpSession session = request.getSession();
//2.获取用户信息
Object user = session.getAttribute("user");
//3.判断用户信息是否存在
if (user == null){
//4.不存在,拦截
response.setStatus(401);
return false;
}
//5.存在,保存用户信息到ThreadLocal
UserHolder.saveUser((UserDTO) user);
//6.放行
return true;
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
//移除用户
UserHolder.removeUser();
}
}
配置添加拦截器到SpringMvc中(配置拦截路径)
package com.hmdp.config;
import com.hmdp.utils.LoginInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
/**
* @Author 华子
* @Date 2022/11/20 17:38
* @Version 1.0
*/
@Configuration
public class MvcConfig implements WebMvcConfigurer {
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new LoginInterceptor())
.excludePathPatterns(
"/shop/**",
"/voucher/**",
"/shop-type/**",
"/upload/**",
"/blog/hot",
"/user/code",
"/user/login"
);
}
}
最后Controller层返回用户信息
@GetMapping("/me")
public Result me(){
// TODO 获取当前登录的用户并返回
UserDTO user = UserHolder.getUser();
return Result.ok(user);
}
session共享问题:
多台Tomcat并不共享session存储空间,当请求切换到不同tomcat服务时导致数据丢失的问题。
session的替代方案应该满足:
数据共享
内存存储
key、value结构
无可厚非,就说我们的Reids啦~
这步操作和之前的Session很相同,只是我们这次把验证码保存到Redis当中
对于验证码的保存,我们选择String类型操作,key用手机号(唯一性)value就是验证码
代码:(其余操作一样,就是验证码本来是存到Session中,改为存到Reids)
package com.hmdp.service.impl;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RegexPatterns;
import com.hmdp.utils.RegexUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.catalina.manager.util.SessionUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import static com.hmdp.utils.RedisConstants.*;
import static com.hmdp.utils.SystemConstants.USER_NICK_NAME_PREFIX;
/**
*
* 服务实现类
*
*
* @author 虎哥
* @since 2021-12-22
*/
@Slf4j
@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {
@Resource
private StringRedisTemplate stringRedisTemplate;
@Override
public Result sendCode(String phone, HttpSession session) {
//1.校验手机号
if (RegexUtils.isPhoneInvalid(phone)){
//2.如果错误,返回错误信息
return Result.fail("手机号码格式错误!");
}
//3.生成验证码
String code = RandomUtil.randomNumbers(6);
//4.保存验证码到session中去
// session.setAttribute("code",code);
//4.保存验证码到redis中去
stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY+phone,code,LOGIN_CODE_TTL, TimeUnit.MINUTES);
//5.发送验证码
log.debug("手机验证码为:{}",code);
return Result.ok();
}
}
这一步明显要比上一步复杂的多了,我们一步一步来
首先,就是用户每次访问的时候,每次的路径都是不一样的,而Seesion是从Cookie中获取唯一的SessionId来确保唯一性,以此取得用户值,而对于Redis,我们及需要一个唯一的标识符,就是我们的Token(使用UUID生成的随机字符串)。
和之前的Session操作不同的地方在于
1. 使用手机号为key去Redis中获取验证码
2. 使用随机生成的字符串Token保存用户数据
3.返回Token数据给前端,由前端保存到请求头的“Authorization”中
温馨小提示:这里我们使用Map操作来保存用户数据~
具体实现代码如下:
package com.hmdp.service.impl;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RegexPatterns;
import com.hmdp.utils.RegexUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.catalina.manager.util.SessionUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import static com.hmdp.utils.RedisConstants.*;
import static com.hmdp.utils.SystemConstants.USER_NICK_NAME_PREFIX;
/**
*
* 服务实现类
*
*
* @author 虎哥
* @since 2021-12-22
*/
@Slf4j
@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {
@Resource
private StringRedisTemplate stringRedisTemplate;
@Override
public Result login(LoginFormDTO loginForm, HttpSession session) {
String phone = loginForm.getPhone();
//1.校验手机号
if (RegexUtils.isPhoneInvalid(phone)){
//2.如果错误,返回错误信息
return Result.fail("手机号码格式错误!");
}
//2.校验验证码
//2.1 从redis中获取验证码
String sendCode = stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY + phone);
String code = loginForm.getCode();
// String sendCode = (String) session.getAttribute("code");
if (code != null || !code.equals(sendCode)){
//验证码不一致
Result.fail("验证码错误!");
}
//验证码相同,查询手机号
User user = query().eq("phone", loginForm.getPhone()).one();
if (user == null) {
//用户不存在,创建一个新用户并且保存到数据库中
user = createNewUser(phone);
}
// 用户存在,将用户数据存入Redis
//随机生成一个token
String token = UUID.randomUUID().toString(true);
//获取用户数据并转成Map集合
UserDTO userDTO = BeanUtil.copyProperties(user, UserDTO.class);
Map userMap = BeanUtil.beanToMap(userDTO,new HashMap<>(),
CopyOptions.create()
.setIgnoreNullValue(true)
.setFieldValueEditor((fieldName,fieldValue)->fieldValue.toString())
);
//将用户数据存入redis当中
String tokenKey = LOGIN_USER_KEY+token;
stringRedisTemplate.opsForHash().putAll(tokenKey,userMap);
//设置有效期,防止用户过多,导致内存不足
stringRedisTemplate.expire(tokenKey,LOGIN_USER_TTL,TimeUnit.MINUTES);
// session.setAttribute("user", BeanUtil.copyProperties(user,UserDTO.class));
return Result.ok(token);
}
private User createNewUser(String phone) {
//1.创建用户
User user = new User();
user.setPhone(phone);
user.setNickName(USER_NICK_NAME_PREFIX+RandomUtil.randomString(10));
//2.保存用户
save(user);
return user;
}
}
还没完,Session操作中,我们用户每次请求,都会重新设置存活时间,以确保用户可以持续,而我们使用Redis时,可以在拦截器中设置每次拦截到,重新设置Redis字段的存活时间 。
和Session使用的拦截器不同点在于
1.我们要先获取请求头中的token,用来获取用户数据
2.保存完用户数据后,我们需要重新设置Redis中key的存活时间
具体代码如下:
package com.hmdp.utils;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.StrUtil;
import com.hmdp.dto.UserDTO;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/**
* @Author 华子
* @Date 2022/11/20 17:30
* @Version 1.0
*/
public class RefreshTokenInterceptor implements HandlerInterceptor {
private StringRedisTemplate stringRedisTemplate;
public RefreshTokenInterceptor(StringRedisTemplate stringRedisTemplate) {
this.stringRedisTemplate = stringRedisTemplate;
}
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//1.获取请求头中的token
String token = request.getHeader("authorization");
if (StrUtil.isBlank(token)) {
return true;
}
//2.获取用户信息
String key = RedisConstants.LOGIN_USER_KEY + token;
Map
Mvc配置类(MvcConfig):
package com.hmdp.config;
import com.hmdp.utils.LoginInterceptor;
import com.hmdp.utils.RefreshTokenInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import javax.annotation.Resource;
/**
* @Author 华子
* @Date 2022/11/20 17:38
* @Version 1.0
*/
@Configuration
public class MvcConfig implements WebMvcConfigurer {
@Resource
private StringRedisTemplate stringRedisTemplate;
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new LoginInterceptor())
.excludePathPatterns(
"/shop/**",
"/voucher/**",
"/shop-type/**",
"/upload/**",
"/blog/hot",
"/user/code",
"/user/login"
);
}
}
这里有个小知识点,我们自己创造的类,Spring无法帮我们自动注入,所以我们在Mvc配置类中进行注入
这样就可以成功的注入StringRedisTemplate了~
因为我们上述的拦截器只拦截了部分请求,还没做到百分百刷新用户的存活时间,所以我们可以这样做:
在最外层在加上一个拦截器,拦截所有用户,用于专门刷新存活时间且放行,而第二个拦截器用于判断ThreadLocal中是否含有用户信息,没有就拦截。
具体实现代码:
最外层拦截器:(只做刷新)
package com.hmdp.utils;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.StrUtil;
import com.hmdp.dto.UserDTO;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/**
* @Author 华子
* @Date 2022/11/20 17:30
* @Version 1.0
*/
public class RefreshTokenInterceptor implements HandlerInterceptor {
private StringRedisTemplate stringRedisTemplate;
public RefreshTokenInterceptor(StringRedisTemplate stringRedisTemplate) {
this.stringRedisTemplate = stringRedisTemplate;
}
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//1.获取请求头中的token
String token = request.getHeader("authorization");
if (StrUtil.isBlank(token)) {
return true;
}
//2.获取用户信息
String key = RedisConstants.LOGIN_USER_KEY + token;
Map
第二次拦截器:(只做拦截)
package com.hmdp.utils;
import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.StrUtil;
import com.hmdp.dto.UserDTO;
import io.netty.util.internal.StringUtil;
import org.springframework.beans.BeanUtils;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/**
* @Author 华子
* @Date 2022/11/20 17:30
* @Version 1.0
*/
public class LoginInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//1.判断ThreadLocal中是否存在用户信息
if (UserHolder.getUser() == null){
//没有,拦截
response.setStatus(401);
return false;
}
//2. 有,放行
return true;
}
}
Mvc配置类:
这里面主要设置了添加拦截器,设置第二个拦截器需要拦截的路径 和两个拦截器的优先级。
package com.hmdp.config;
import com.hmdp.utils.LoginInterceptor;
import com.hmdp.utils.RefreshTokenInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import javax.annotation.Resource;
/**
* @Author 华子
* @Date 2022/11/20 17:38
* @Version 1.0
*/
@Configuration
public class MvcConfig implements WebMvcConfigurer {
@Resource
private StringRedisTemplate stringRedisTemplate;
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new LoginInterceptor())
.excludePathPatterns(
"/shop/**",
"/voucher/**",
"/shop-type/**",
"/upload/**",
"/blog/hot",
"/user/code",
"/user/login"
).order(1);
registry.addInterceptor(new RefreshTokenInterceptor(stringRedisTemplate)).order(0);
}
}