1

dd

2025-12-26 9652bbc4a506f46986e298735b27f281ebf06124

 src/main/java/com/nq/service/impl/PriceServicesImpl.java

@@ -33,6 +33,8 @@
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import com.fasterxml.jackson.databind.ObjectMapper;

@Service
@@ -109,58 +111,97 @@
        }
    }

    public String doGet(String pid){
        String apiUrl = PropertiesUtil.getProperty("JS_IN_HTTP_URL") + "stock?key=" + PropertiesUtil.getProperty("JS_IN_KEY");
        String result = null;
    private static class CacheEntry {
        String result;
        long lastExecuteTime;
    }

        try {
            // 添加请求间隔，避免频率过高
            Thread.sleep(1000); // 等待1秒再请求
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
    private static final Map<String, CacheEntry> cacheMap = new ConcurrentHashMap<>();
    private static final long MIN_INTERVAL_MS = 3000;
    private static final Object globalLock = new Object();

    public static String doGet(String pid) {
        long currentTime = System.currentTimeMillis();

        // 1. 先检查该pid是否有缓存
        CacheEntry entry = cacheMap.get(pid);
        if (entry != null && (currentTime - entry.lastExecuteTime) < MIN_INTERVAL_MS) {
            return entry.result;
        }

        // 2. 使用双重检查锁定更新缓存
        synchronized (getLockForPid(pid)) {
            currentTime = System.currentTimeMillis();
            entry = cacheMap.get(pid);

            if (entry != null && (currentTime - entry.lastExecuteTime) < MIN_INTERVAL_MS) {
                return entry.result;
            }

            // 3. 执行实际请求
            String newResult = doActualPost(pid);

            // 4. 更新该pid的缓存
            CacheEntry newEntry = new CacheEntry();
            newEntry.result = newResult;
            newEntry.lastExecuteTime = System.currentTimeMillis();
            cacheMap.put(pid, newEntry);

            return newResult;
        }
    }

    // 为每个pid提供独立的锁对象，避免不同pid间的阻塞
    private static final Map<String, Object> pidLocks = new ConcurrentHashMap<>();

    private static Object getLockForPid(String pid) {
        return pidLocks.computeIfAbsent(pid, k -> new Object());
    }


    private static String doActualPost(String pid) {
        String apiUrl = PropertiesUtil.getProperty("JS_IN_HTTP_URL") +
                "stock?key=" + PropertiesUtil.getProperty("JS_IN_KEY");

        try {
            URL url = new URL(apiUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();

            // 设置超时时间
            connection.setConnectTimeout(10000);
            connection.setReadTimeout(10000);
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json; charset=utf-8");
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            connection.setDoOutput(true);
            connection.setConnectTimeout(5000);
            connection.setReadTimeout(10000);

            // JSON格式请求体
            String jsonInputString = "{\"pid\":\"" + pid + "\"}";
            String postData = "pid=" + pid;

            try (OutputStream os = connection.getOutputStream()) {
                byte[] input = jsonInputString.getBytes("utf-8");
                byte[] input = postData.getBytes("utf-8");
                os.write(input, 0, input.length);
            }

            // 检查HTTP响应码
            int responseCode = connection.getResponseCode();
            if (responseCode == 429) {
                // 如果还是429，等待更长时间后重试
                Thread.sleep(3000);
                return doGet(pid); // 递归重试（注意设置最大重试次数）
            }

            // 读取响应
            try (BufferedReader in = new BufferedReader(
                    new InputStreamReader(connection.getInputStream()))) {
                String inputLine;
                StringBuilder response = new StringBuilder();
                while ((inputLine = in.readLine()) != null) {
                    response.append(inputLine);
                }
                result = response.toString();
            BufferedReader in = new BufferedReader(
                    new InputStreamReader(connection.getInputStream()));
            String inputLine;
            StringBuilder response = new StringBuilder();

            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();

            return response.toString();

        } catch (Exception e) {
            e.printStackTrace();
            // 如果请求失败，返回该pid的旧缓存（如果有）
            CacheEntry oldEntry = cacheMap.get(pid);
            if (oldEntry != null && oldEntry.result != null) {
                return oldEntry.result;
            }
            return "{\"error\":\"请求失败:" + e.getMessage() + "\"}";
        }
        return result;
    }

    @Override