From cca0b258ffefd2ad478b9e5115200f5a223eb09f Mon Sep 17 00:00:00 2001
From: dd <gitluke@outlook.com>
Date: Fri, 26 Dec 2025 02:31:05 +0800
Subject: [PATCH] 1
---
src/main/java/com/nq/utils/redis/RedisKeyUtil.java | 106 +++++++++++++++++++++++++++++++++++-----------------
1 files changed, 71 insertions(+), 35 deletions(-)
diff --git a/src/main/java/com/nq/utils/redis/RedisKeyUtil.java b/src/main/java/com/nq/utils/redis/RedisKeyUtil.java
index 7e53315..1d533a6 100644
--- a/src/main/java/com/nq/utils/redis/RedisKeyUtil.java
+++ b/src/main/java/com/nq/utils/redis/RedisKeyUtil.java
@@ -21,6 +21,7 @@
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Map;
+import java.util.concurrent.locks.ReentrantLock;
public class RedisKeyUtil {
@@ -89,43 +90,78 @@
}
}
+ private static final ReentrantLock lock = new ReentrantLock();
+ private static String lastResult = null;
+ private static long lastExecuteTime = 0;
+ private static final long MIN_INTERVAL_MS = 3000;
+
public static String doPost(String pid) {
- // 从配置中获取 API URL，并拼接 key
- String apiUrl = PropertiesUtil.getProperty("JS_IN_HTTP_URL") + "stock?key=" + PropertiesUtil.getProperty("JS_IN_KEY");
- String result = null;
- try {
- URL url = new URL(apiUrl);
- HttpURLConnection connection = (HttpURLConnection) url.openConnection();
-
- // 设置请求方法为 POST
- connection.setRequestMethod("POST");
- // 设置请求头
- connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
- connection.setDoOutput(true); // 允许向连接输出
-
- // 构建 POST 数据
- String postData = "pid=" + pid;
-
- // 发送 POST 请求
- try (OutputStream os = connection.getOutputStream()) {
- byte[] input = postData.getBytes("utf-8");
- os.write(input, 0, input.length);
- }
-
- // 读取响应
- BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
- String inputLine;
- StringBuffer response = new StringBuffer();
-
- while ((inputLine = in.readLine()) != null) {
- response.append(inputLine);
- }
- in.close();
- result = response.toString();
- } catch (Exception e) {
- e.printStackTrace();
+ // 快速检查缓存
+ long currentTime = System.currentTimeMillis();
+ if (lastResult != null && (currentTime - lastExecuteTime) < MIN_INTERVAL_MS) {
+ return lastResult;
}
- return result;
+
+ // 需要获取锁执行新请求
+ return executeWithLock(pid);
+ }
+
+ private static String executeWithLock(String pid) {
+ String apiUrl = PropertiesUtil.getProperty("JS_IN_HTTP_URL") + "stock?key=" + PropertiesUtil.getProperty("JS_IN_KEY");
+
+ lock.lock();
+ try {
+ // 双检锁：再次检查缓存
+ long currentTime = System.currentTimeMillis();
+ if (lastResult != null && (currentTime - lastExecuteTime) < MIN_INTERVAL_MS) {
+ return lastResult;
+ }
+
+ // 执行POST请求
+ String result = null;
+ try {
+ URL url = new URL(apiUrl);
+ HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+
+ connection.setRequestMethod("POST");
+ connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
+ connection.setDoOutput(true);
+
+ String postData = "pid=" + pid;
+
+ try (OutputStream os = connection.getOutputStream()) {
+ byte[] input = postData.getBytes("utf-8");
+ os.write(input, 0, input.length);
+ }
+
+ BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
+ String inputLine;
+ StringBuilder response = new StringBuilder();
+
+ while ((inputLine = in.readLine()) != null) {
+ response.append(inputLine);
+ }
+ in.close();
+
+ result = response.toString();
+
+ // 更新缓存
+ lastResult = result;
+ lastExecuteTime = System.currentTimeMillis();
+
+ } catch (Exception e) {
+ e.printStackTrace();
+ // 请求失败时返回缓存
+ if (lastResult != null) {
+ return lastResult;
+ }
+ }
+
+ return result;
+
+ } finally {
+ lock.unlock();
+ }
}
--
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