package com.dg.core.manager;
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import com.dg.core.Constant;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Qualifier;
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import org.springframework.data.redis.core.RedisTemplate;
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import org.springframework.data.redis.core.script.DigestUtils;
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import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer;
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import org.springframework.stereotype.Component;
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import java.util.UUID;
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import java.util.concurrent.TimeUnit;
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/**
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* 通过Redis存储和验证token的实现类
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*/
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@Component
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public class RedisTokenManager implements TokenManager {
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private RedisTemplate<String, String> redis;
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@Qualifier("redisTemplate")
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@Autowired
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public void setRedis(RedisTemplate redis) {
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this.redis = redis;
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//泛型设置成Long后必须更改对应的序列化方案
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redis.setKeySerializer(new JdkSerializationRedisSerializer());
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}
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@Override
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public String createToken(long userId, long userRole) {
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//使用uuid作为源token
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String uuid = UUID.randomUUID().toString().replace("-", "");
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String token = DigestUtils.sha1DigestAsHex(uuid + userId + "e23ktjsdf") + "-" + userRole;
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//存储到redis并设置过期时间
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redis.boundValueOps(token).set(String.valueOf(userId), Constant.TOKEN_EXPIRES_HOUR, TimeUnit.HOURS);
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redis.boundValueOps(String.valueOf(userId)).set(token, Constant.TOKEN_EXPIRES_HOUR, TimeUnit.HOURS);
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return token;
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}
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public boolean checkToken(String token) {
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if (token == null) {
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return false;
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}
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String userId = redis.boundValueOps(token).get();
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if (userId == null) {
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return false;
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}
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//如果验证成功，说明此用户进行了一次有效操作，延长token的过期时间
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redis.boundValueOps(token).expire(Constant.TOKEN_EXPIRES_HOUR, TimeUnit.HOURS);
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return true;
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}
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@Override
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public long getUserId(String token) {
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if (token == null) {
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return -1;
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}
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String userId = redis.boundValueOps(token).get();
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return Long.parseLong(userId);
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}
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public void deleteToken(String token) {
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redis.delete(token);
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}
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@Override
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public String getTokenByUserId(long userId) {
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return redis.boundValueOps(String.valueOf(userId)).get();
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}
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}
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