修改验券幂等

share-common/pom.xml

@@ -177,11 +177,6 @@
             <version>1.4.9</version>
         </dependency>
 
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-            <version>21.0</version>
-        </dependency>
     </dependencies>
 
 </project>
\ No newline at end of file

share-common/src/main/java/share/common/utils/RedisLockUtil.java

+package share.common.utils;
+
+import org.springframework.data.redis.core.RedisCallback;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.stereotype.Component;
+
+import javax.annotation.Resource;
+import java.util.Objects;
+
+/**
+ * @ClassName RedisLockUtil
+ * @Description 使用redis做锁
+ * @Author Wangyujie
+ * @Version V1.1.0
+ */
+@Component
+public class RedisLockUtil {
+
+    @Resource
+    RedisTemplate<String, Object> redisTemplate;
+
+    /**
+     * 获取锁Key
+     *
+     * @param prefix 前缀
+     * @param name   名称
+     * @return
+     */
+    public static String getFullKey(String prefix, String name) {
+        return prefix + "_" + name;
+    }
+
+    /**
+     * 获取锁，true 则得到锁，false 已被锁定
+     *
+     * @param lockName   锁名称
+     * @param lockExoire 锁时间毫秒
+     * @return
+     */
+    public Boolean getLock(String lockName, Integer lockExoire) {
+        return (Boolean) redisTemplate.execute((RedisCallback<?>) connection -> {
+            // 获取时间毫秒值
+            long expireAt = System.currentTimeMillis() + lockExoire + 1;
+            // 获取锁
+            Boolean acquire = connection.setNX(lockName.getBytes(), String.valueOf(expireAt).getBytes());
+            if (acquire) {
+                return true;
+            } else {
+                byte[] bytes = connection.get(lockName.getBytes());
+                // 非空判断
+                if (Objects.nonNull(bytes) && bytes.length > 0) {
+                    long expireTime = Long.parseLong(new String(bytes));
+                    // 如果锁已经过期
+                    if (expireTime < System.currentTimeMillis()) {
+                        // 重新加锁，防止死锁
+                        byte[] set = connection.getSet(lockName.getBytes(),
+                                String.valueOf(System.currentTimeMillis() + lockExoire + 1).getBytes());
+                        return Long.parseLong(new String(set)) < System.currentTimeMillis();
+                    }
+                }
+            }
+            return false;
+        });
+    }
+
+    /**
+     * 删除锁
+     *
+     * @param lockName
+     */
+    public void delLock(String lockName) {
+        redisTemplate.delete(lockName);
+    }
+
+}

share-common/src/main/java/share/common/utils/aop/RepeatSubmit.java

-package share.common.utils.aop;
-
-import java.lang.annotation.*;
-
-@Target(ElementType.METHOD)
-@Retention(RetentionPolicy.RUNTIME)
-@Documented
-@Inherited
-public @interface RepeatSubmit {
-
-    String key() default "";
-
-}
-

share-common/src/main/java/share/common/utils/aop/RepeatSubmitAspect.java

-package share.common.utils.aop;
-
-import com.google.common.cache.Cache;
-import com.google.common.cache.CacheBuilder;
-import org.apache.commons.lang3.StringUtils;
-import org.aspectj.lang.ProceedingJoinPoint;
-import org.aspectj.lang.annotation.Around;
-import org.aspectj.lang.annotation.Aspect;
-import org.aspectj.lang.reflect.MethodSignature;
-import org.springframework.stereotype.Component;
-
-import java.lang.reflect.Method;
-import java.util.concurrent.TimeUnit;
-
-
-@Aspect
-@Component
-public class RepeatSubmitAspect {
-
-    private static final Cache<String, Object> CACHES = CacheBuilder.newBuilder()
-            // 最大缓存 设置为1000个
-            .maximumSize(1000)
-            // 设置写缓存后1s过期
-            .expireAfterWrite(1, TimeUnit.SECONDS)
-            .build();
-
-    @Around("execution(public * *(..)) && @annotation(share.common.utils.aop.RepeatSubmit))")
-    public Object interceptor(ProceedingJoinPoint pjp) {
-        MethodSignature signature = (MethodSignature) pjp.getSignature();
-        Method method = signature.getMethod();
-        RepeatSubmit repeatSubmit = method.getAnnotation(RepeatSubmit.class);
-        String key = getKey(repeatSubmit.key(), pjp.getArgs());
-        if (StringUtils.isNotBlank(key)) {
-            if (CACHES.getIfPresent(key) != null) {
-                throw new RuntimeException("请勿重复请求");
-            }
-            // 如果是第一次请求，就将key 当前对象压入缓存中
-            CACHES.put(key, key);
-        }
-
-        try {
-            return pjp.proceed();
-        } catch (Throwable throwable) {
-            throw new RuntimeException("服务器异常！");
-        }
-    }
-
-    /**
-     * key 的生成策略
-     *
-     * @param keyExpress 表达式
-     * @param args       参数
-     * @return 生成的key
-     */
-    private String getKey(String keyExpress, Object[] args) {
-        for (int i = 0; i < args.length; i++) {
-            keyExpress = keyExpress.replace("arg[" + i + "]", args[i].toString());
-        }
-        return keyExpress;
-    }
-}