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feat:使用redis解决微信登陆code淘汰问题 #98

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feat:使用redis解决微信登陆code淘汰问题 #98

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2 changes: 2 additions & 0 deletions mallchat-common/src/main/java/com/abin/mallchat/common/common/constant/RedisKey.java
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,8 @@ public class RedisKey {
*/
public static final String USER_GLM2_TIME_LAST = "userGLM2UseTime:uid_%d";

public static final String WX_RANDOM_CODE_STRING = "wxRandomCode";

public static String getKey(String key, Object... objects) {
return BASE_KEY + String.format(key, objects);
}
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77 changes: 77 additions & 0 deletions mallchat-common/src/main/java/com/abin/mallchat/common/common/utils/RedisUtils.java
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Expand Up @@ -32,11 +32,28 @@ public class RedisUtils {
" return tonumber(redis.call('INCR',key)) \n" +
"end ";

private static final String ZERO_STRING = "0";
public static Long inc(String key, int time, TimeUnit unit) {
RedisScript<Long> redisScript = new DefaultRedisScript<>(LUA_INCR_EXPIRE, Long.class);
return stringRedisTemplate.execute(redisScript, Collections.singletonList(key), String.valueOf(unit.toSeconds(time)));
}

/**
* key自增
* @param key
* @return
*/
public static Long inc(String key) {
return stringRedisTemplate.opsForValue().increment(key);
}

/**
* 重置key为0
* @param key
*/
public static void reset(String key) {
stringRedisTemplate.opsForValue().set(key, ZERO_STRING);
}
/**
* 指定缓存失效时间
*
Expand Down Expand Up @@ -284,6 +301,66 @@ public static Boolean set(String key, Object value, long time) {
}
}

/**
* 带if exist缓存放入并设置过期时间
*
* @param key 键
* @param value 值
* @param time 时间
* @param timeUnit 类型
* @return true成功 false 失败
*/
public static Boolean setnx(String key, Object value, long time, TimeUnit timeUnit) {
try {
if (time > 0) {
stringRedisTemplate.opsForValue().setIfAbsent(key, objToStr(value), time, timeUnit);
} else {
set(key, value);
}
return true;
} catch (Exception e) {
log.error(e.getMessage(), e);
return false;
}
}

/**
* 带if exist缓存放入并设置过期时间
*
* @param key 键
* @param value 值
* @return true成功 false失败
*/
public static Boolean setnx(String key, Object value, long time) {
try {
if (time > 0) {
stringRedisTemplate.opsForValue().setIfAbsent(key, objToStr(value), time, TimeUnit.SECONDS);
} else {
set(key, value);
}
return true;
} catch (Exception e) {
log.error(e.getMessage(), e);
return false;
}
}
/**
* 带if exist缓存放入
*
* @param key 键
* @param value 值
* @return true成功 false失败
*/
public static Boolean setnx(String key, Object value) {
try {
stringRedisTemplate.opsForValue().setIfAbsent(key, objToStr(value));
return true;
} catch (Exception e) {
log.error(e.getMessage(), e);
return false;
}
}

/**
* 普通缓存放入并设置时间
*
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36 changes: 31 additions & 5 deletions ...server/src/main/java/com/abin/mallchat/custom/user/service/impl/WebSocketServiceImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -5,8 +5,12 @@
import cn.hutool.json.JSONUtil;
import com.abin.mallchat.common.common.annotation.FrequencyControl;
import com.abin.mallchat.common.common.config.ThreadPoolConfig;
import com.abin.mallchat.common.common.constant.RedisKey;
import com.abin.mallchat.common.common.event.UserOfflineEvent;
import com.abin.mallchat.common.common.event.UserOnlineEvent;
import com.abin.mallchat.common.common.exception.BusinessException;
import com.abin.mallchat.common.common.exception.CommonErrorEnum;
import com.abin.mallchat.common.common.utils.RedisUtils;
import com.abin.mallchat.common.user.dao.UserDao;
import com.abin.mallchat.common.user.domain.entity.User;
import com.abin.mallchat.common.user.domain.enums.RoleEnum;
Expand Down Expand Up @@ -73,6 +77,12 @@ public class WebSocketServiceImpl implements WebSocketService {
*/
private static final ConcurrentHashMap<Long, CopyOnWriteArrayList<Channel>> ONLINE_UID_MAP = new ConcurrentHashMap<>();

/**
* 微信二维码code过期时间
*/
private static final Duration CODE_EXPIRE_TIME = Duration.ofHours(1);


public static ConcurrentHashMap<Channel, WSChannelExtraDTO> getOnlineMap() {
return ONLINE_WS_MAP;
}
Expand Down Expand Up @@ -102,8 +112,8 @@ public static ConcurrentHashMap<Channel, WSChannelExtraDTO> getOnlineMap() {
@Override
@FrequencyControl(time = 100, count = 5, spEl = "T(com.abin.mallchat.common.common.utils.RequestHolder).get().getIp()")
public void handleLoginReq(Channel channel) {
//生成随机不重复的登录码
Integer code = generateLoginCode(channel);
//通过redis生成随机不重复的登录码
Integer code = generateLoginCodeByRedis(channel);
//请求微信接口，获取登录码地址
WxMpQrCodeTicket wxMpQrCodeTicket = wxMpService.getQrcodeService().qrCodeCreateTmpTicket(code, (int) EXPIRE_TIME.getSeconds());
//返回给前端
Expand All @@ -124,6 +134,22 @@ private Integer generateLoginCode(Channel channel) {
return CODE.get();
}

/**
* 通过redis原子自增操作获取code，获取后将code放入到redis的kv中，同时设置过期时间
* @param channel
* @return
*/
private Integer generateLoginCodeByRedis(Channel channel) {
Long code = RedisUtils.inc(RedisKey.WX_RANDOM_CODE_STRING);
if (code > Integer.MAX_VALUE) {
RedisUtils.reset(RedisKey.WX_RANDOM_CODE_STRING);
}
if (!RedisUtils.setnx(String.valueOf(code), channel, CODE_EXPIRE_TIME.getSeconds())) {
throw new BusinessException(CommonErrorEnum.SYSTEM_ERROR);
}
return code.intValue();
}

/**
* 处理所有ws连接的事件
*
Expand Down Expand Up @@ -208,20 +234,20 @@ private boolean offline(Channel channel, Optional<Long> uidOptional) {
@Override
public Boolean scanLoginSuccess(Integer loginCode, User user, String token) {
//发送消息
Channel channel = WAIT_LOGIN_MAP.getIfPresent(loginCode);
Channel channel = RedisUtils.get(String.valueOf(loginCode), Channel.class);
if (Objects.isNull(channel)) {
return Boolean.FALSE;
}
//移除code
WAIT_LOGIN_MAP.invalidate(loginCode);
RedisUtils.del(String.valueOf(loginCode));
//用户登录
loginSuccess(channel, user, token);
return true;
}

@Override
public Boolean scanSuccess(Integer loginCode) {
Channel channel = WAIT_LOGIN_MAP.getIfPresent(loginCode);
Channel channel = RedisUtils.get(String.valueOf(loginCode), Channel.class);
if (Objects.isNull(channel)) {
return Boolean.FALSE;
}
Expand Down