赋值问题

cash-common/cash-common-redis/src/main/java/com/czg/service/RedisService.java

@@ -6,14 +6,15 @@ import jakarta.annotation.Resource;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.script.DefaultRedisScript;
 import org.springframework.stereotype.Component;
 import org.springframework.util.CollectionUtils;
 
-import java.util.Collection;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.concurrent.TimeUnit;
+import java.util.function.Consumer;
+import java.util.function.Function;
+import java.util.function.Supplier;
 
 /**
  * @author GYJoker
@@ -650,4 +651,106 @@ public class RedisService {
         }
         return JSON.parseArray(jsonStr, type);
     }
+
+
+    public static int retryCount = 5;
+
+    /**
+     * 执行任务并保证锁唯一
+     *
+     * @param supplier 业务逻辑
+     * @param lockKey  Redis锁的Key
+     * @return 业务逻辑返回值
+     */
+    public <T> T runFunAndCheckKey(Supplier<T> supplier, String lockKey) {
+        String lockValue = String.valueOf(System.nanoTime() + Thread.currentThread().threadId());
+        try {
+            // 尝试获取锁，超时时间 5 秒，防止死锁
+            boolean lock = Boolean.TRUE.equals(redisTemplate.opsForValue().setIfAbsent(lockKey, lockValue, 5, TimeUnit.SECONDS));
+            int count = 0;
+            // 初始等待 10ms
+            int retryDelay = 10;
+
+            while (!lock) {
+                // 最多重试 10 次，大约 10 秒
+                if (count++ > 50) {
+                    throw new RuntimeException("系统繁忙, 稍后再试");
+                }
+                Thread.sleep(retryDelay);
+                // 指数退避，最大等待 200ms
+                retryDelay = Math.min(retryDelay * 2, 200);
+                lock = Boolean.TRUE.equals(redisTemplate.opsForValue().setIfAbsent(lockKey, lockValue, 5, TimeUnit.SECONDS));
+            }
+
+            // 执行任务
+            return supplier.get();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new RuntimeException("线程被中断", e);
+        } catch (Exception e) {
+            log.error("执行出错：{}", e.getMessage(), e);
+            throw e;
+        } finally {
+            // 释放锁（使用 Lua 脚本确保原子性）
+            unlock(lockKey, lockValue);
+        }
+    }
+
+    /**
+     * 使用 Lua 脚本确保释放锁的原子性
+     *
+     * @param lockKey   锁的 Key
+     * @param lockValue 当前线程的锁值
+     */
+    private void unlock(String lockKey, String lockValue) {
+        String luaScript =
+                "if redis.call('get', KEYS[1]) == ARGV[1] then " +
+                        "return redis.call('del', KEYS[1]) " +
+                        "else return 0 end";
+        redisTemplate.execute(new DefaultRedisScript<>(luaScript, Long.class),
+                Collections.singletonList(lockKey), lockValue);
+    }
+
+    public static <T, R> R runFunAndRetry(
+            Supplier<R> function,
+            Function<R, Boolean> check, Consumer<R> errFun) {
+        R result = function.get();
+        boolean flag = check.apply(result);
+
+        while (flag && retryCount-- > 0) {
+            result = function.get();
+            flag = check.apply(result);
+        }
+
+        if (flag) {
+            errFun.accept(result);
+        }
+        return result;
+    }
+
+
+    /**
+     * 防抖函数：在指定秒数内相同 Key 的任务只会执行一次
+     *
+     * @param key     防抖使用的 Redis Key
+     * @param seconds 防抖时间（秒）
+     * @param task    要执行的业务逻辑
+     * @return true 执行了任务；false 在防抖期内被拦截
+     */
+    public boolean debounce(String key, long seconds, Runnable task) {
+        try {
+            Boolean success = redisTemplate.opsForValue().setIfAbsent(
+                    key, "1", seconds, TimeUnit.SECONDS
+            );
+
+            if (Boolean.TRUE.equals(success)) {
+                task.run();
+                return true;
+            }
+            return false;
+        } catch (Exception e) {
+            log.error("防抖函数执行失败 key={} err={}", key, e.getMessage(), e);
+            return false;
+        }
+    }
 }

cash-common/cash-common-service/src/main/java/com/czg/order/entity/OrderInfo.java

@@ -377,7 +377,7 @@ public class OrderInfo implements Serializable {
         if (!isPrintSuccess) {
             newPrintStatusArray.add(printJson);
         }
-        if (newPrintStatusArray.isEmpty()) {
+        if (!newPrintStatusArray.isEmpty()) {
             printStatus = newPrintStatusArray.toJSONString();
         }
     }