fix(stock): 处理股票信息编码问题以确保数据完整性

- 在获取股票信息时，增加对缓存数据的编码检查和转换，确保名称字段为UTF-8编码
- 在从新浪接口获取数据时，添加编码转换以避免JSON解析错误
- 更新前端代码以确保所有股票信息在JSON中可正确编码

app/common.php

@@ -1758,7 +1758,12 @@ if (!function_exists('getStockInfo')) {
             // 尝试从缓存获取
             $cacheKey = 'stock_info_' . $stockCode;
             $cached = \think\facade\Cache::get($cacheKey);
-            if (!empty($cached)) {
+            if (!empty($cached) && is_array($cached)) {
+                // 清理历史缓存里可能残留的非 UTF-8 字段
+                if (!empty($cached['name']) && !mb_check_encoding((string)$cached['name'], 'UTF-8')) {
+                    $cached['name'] = mb_convert_encoding((string)$cached['name'], 'UTF-8', 'GBK');
+                    \think\facade\Cache::set($cacheKey, $cached, 60 * 15 - 10);
+                }
                 return $cached;
             }
 
@@ -1807,6 +1812,11 @@ if (!function_exists('fetchStockFromSina')) {
             return null;
         }
 
+        // 新浪接口默认 GBK，转 UTF-8 后再解析，避免 JSON 报 Malformed UTF-8
+        if (!mb_check_encoding($response, 'UTF-8')) {
+            $response = mb_convert_encoding($response, 'UTF-8', 'GBK');
+        }
+
         // 解析新浪数据格式：var hq_str_sh603933="名称,开盘价,昨收,当前价,最高,最低,...";
         if (preg_match('/="(.+)"/', $response, $matches)) {
             $fields = explode(',', $matches[1]);
@@ -1815,10 +1825,14 @@ if (!function_exists('fetchStockFromSina')) {
                 $prevClose = floatval($fields[2]);
                 $change = round($price - $prevClose, 2);
                 $changePercent = $prevClose > 0 ? round(($change / $prevClose) * 100, 2) : 0;
+                $name = $fields[0];
+                if (!mb_check_encoding($name, 'UTF-8')) {
+                    $name = mb_convert_encoding($name, 'UTF-8', 'GBK');
+                }
 
                 return [
                     'code' => $stockCode,
-                    'name' => $fields[0],
+                    'name' => $name,
                     'price' => $price > 0 ? number_format($price, 2) : '--',
                     'change' => $price > 0 ? (($change >= 0 ? '+' : '') . number_format($change, 2)) : '--',
                     'changePercent' => $price > 0 ? (($changePercent >= 0 ? '+' : '') . number_format($changePercent, 2) . '%') : '--',

app/controller/frontend/StockController.php

@@ -16,6 +16,12 @@ class StockController extends BaseController
         }
 
         $stock = getStockInfo($code);
+        // 确保 JSON 可编码（防止缓存脏数据）
+        foreach ($stock as $k => $v) {
+            if (is_string($v) && $v !== '' && !mb_check_encoding($v, 'UTF-8')) {
+                $stock[$k] = mb_convert_encoding($v, 'UTF-8', 'GBK');
+            }
+        }
         $change = (string)($stock['change'] ?? '--');
         $color = '';
         if ($change !== '--' && $change !== '') {

public/themes/dist_static/static/js/common.js

@@ -283,9 +283,16 @@ $(function() {
 				timeEl.textContent = `截止 ${data.updateTime}*报价有十五分钟或以上延迟。`;
 			}
 
-			const chartEl = document.querySelector('[data-stock="chart"]');
-			if (chartEl && data.chart) {
-				chartEl.src = `${data.chart}${data.chart.includes("?") ? "&" : "?"}t=${Date.now()}`;
+			const chartEl = document.querySelector('#stock-chart, [data-stock="chart"]');
+			if (chartEl) {
+				const code =
+					document.querySelector("[data-stock-quote]")?.getAttribute("data-stock-code") ||
+					data.code ||
+					"603933";
+				const market = String(code).charAt(0) === "6" ? "sh" : "sz";
+				const raw = String(data.chart || `https://image.sinajs.cn/newchart/min/n/${market}${code}.gif`);
+				const base = raw.split("?")[0];
+				chartEl.setAttribute("src", `${base}?t=${Date.now()}`);
 			}
 		};
 
@@ -314,8 +321,9 @@ $(function() {
 			timer = null;
 		};
 
-		if (!document.querySelector("[data-stock-quote], [data-stock='chart']")) return;
+		if (!document.querySelector("[data-stock-quote], [data-stock='chart'], #stock-chart")) return;
 
+		fetchQuote();
 		start();
 		document.addEventListener("visibilitychange", () => {
 			if (document.hidden) {