接入分布式缓存Spring Data Redis实现用户查询接口

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目录

接入分布式缓存Spring Data Redis实现用户查询接口

安装Reids

接入步骤

pom.xml

application.properties

Spring redis API操作Redis

设置值

获取值

设置过期时间

删除值

获取过期时间

用户服务-UserService 

---

接入分布式缓存Spring Data Redis实现用户查询接口

安装Reids

接入步骤

pom.xml

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-redis</artifactId>
		</dependency>

application.properties

#redis address,pool,connection,we nedd guanzhu three point
spring.redis.pool.max-active=3
#spring.redis.host=localhost
spring.redis.host=192.168.2.10
spring.redis.port=6379
spring.redis.timeout=6000

Spring redis API操作Redis

设置值

  public void resetNotify(String email,String url) {
    String randomKey = "reset_" + RandomStringUtils.randomAlphabetic(10);
    redisTemplate.opsForValue().set(randomKey, email);
    redisTemplate.expire(randomKey, 1,TimeUnit.HOURS);
    String content = url +"?key="+  randomKey;
    mailService.sendSimpleMail("房产平台重置密码邮件", content, email);
  }

获取值

  public String getResetKeyEmail(String key) {
    return  redisTemplate.opsForValue().get(key);
  }

设置过期时间

  public void resetNotify(String email,String url) {
    String randomKey = "reset_" + RandomStringUtils.randomAlphabetic(10);
    redisTemplate.opsForValue().set(randomKey, email);
    redisTemplate.expire(randomKey, 1,TimeUnit.HOURS);
    String content = url +"?key="+  randomKey;
    mailService.sendSimpleMail("房产平台重置密码邮件", content, email);
  }

删除值

  public void invalidate(String token) {
    Map<String, String> map = JwtHelper.verifyToken(token);
    redisTemplate.delete(map.get("email"));
  }

获取过期时间

    Long expired = redisTemplate.getExpire(email);
    if (expired > 0L) {
      renewToken(token, email);
      User user = getUserByEmail(email);
      user.setToken(token);
      return user;
    }

用户服务-UserService 

package com.mooc.house.user.service;

import java.time.Instant;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import org.apache.commons.lang.RandomStringUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.alibaba.fastjson.JSON;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableMap;
import com.mooc.house.user.common.UserException;
import com.mooc.house.user.common.UserException.Type;
import com.mooc.house.user.mapper.UserMapper;
import com.mooc.house.user.model.User;
import com.mooc.house.user.utils.BeanHelper;
import com.mooc.house.user.utils.HashUtils;
import com.mooc.house.user.utils.JwtHelper;

@Service
public class UserService {

  @Autowired
  private StringRedisTemplate redisTemplate;
  
  @Autowired
  private UserMapper userMapper;
  
  @Autowired
  private MailService mailService;
  

  @Value("${file.prefix}")
  private String imgPrefix;
  
  /**
   * 1.首先通过缓存获取
   * 2.不存在将从通过数据库获取用户对象
   * 3.将用户对象写入缓存，设置缓存时间5分钟
   * 4.返回对象
   * @param id
   * @return
   */
  public User getUserById(Long id) {
    String key = "user:"+id;
    String json =  redisTemplate.opsForValue().get(key);
    User user = null;
    if (Strings.isNullOrEmpty(json)) {
      user =  userMapper.selectById(id);
      user.setAvatar(imgPrefix + user.getAvatar());
      String string  = JSON.toJSONString(user);
      redisTemplate.opsForValue().set(key, string);
      redisTemplate.expire(key, 5, TimeUnit.MINUTES);
    }else {
      user = JSON.parseObject(json,User.class);
    }
    return user;
  }


......



  /**
   * 发送注册激活邮件
   * @param email
   * @param enableUrl
   */
  private void registerNotify(String email, String enableUrl) {
    String randomKey = HashUtils.hashString(email) + RandomStringUtils.randomAlphabetic(10);
    redisTemplate.opsForValue().set(randomKey, email);
    redisTemplate.expire(randomKey, 1,TimeUnit.HOURS);
    String content = enableUrl +"?key="+  randomKey;
    mailService.sendSimpleMail("房产平台激活邮件", content, email);
  }

  public boolean enable(String key) {
    String email = redisTemplate.opsForValue().get(key);
    if (StringUtils.isBlank(email)) {
       throw new UserException(UserException.Type.USER_NOT_FOUND, "无效的key");
    }
    User updateUser = new User();
    updateUser.setEmail(email);
    updateUser.setEnable(1);
    userMapper.update(updateUser);
    return true;
  }





  private String renewToken(String token, String email) {
    redisTemplate.opsForValue().set(email, token);
    redisTemplate.expire(email, 30, TimeUnit.MINUTES);
    return token; 
  }

  public User getLoginedUserByToken(String token) {
    Map<String, String> map = null;
    try {
      map = JwtHelper.verifyToken(token);
    } catch (Exception e) {
      throw new UserException(Type.USER_NOT_LOGIN,"User not login");
    }
    String email =  map.get("email");
    Long expired = redisTemplate.getExpire(email);
    if (expired > 0L) {
      renewToken(token, email);
      User user = getUserByEmail(email);
      user.setToken(token);
      return user;
    }
    throw new UserException(Type.USER_NOT_LOGIN,"user not login");
    
  }



  public void invalidate(String token) {
    Map<String, String> map = JwtHelper.verifyToken(token);
    redisTemplate.delete(map.get("email"));
  }



  public void resetNotify(String email,String url) {
    String randomKey = "reset_" + RandomStringUtils.randomAlphabetic(10);
    redisTemplate.opsForValue().set(randomKey, email);
    redisTemplate.expire(randomKey, 1,TimeUnit.HOURS);
    String content = url +"?key="+  randomKey;
    mailService.sendSimpleMail("房产平台重置密码邮件", content, email);
    
  }

  public String getResetKeyEmail(String key) {
    return  redisTemplate.opsForValue().get(key);
  }

 
......

}