fix:数据导出逻辑问题

client/src/sections/wuyuanbiaoba/container/index.jsx

@@ -29,10 +29,12 @@ const WuyuanbiaobaContent = () => {
    const realtimeDataSubscription = useWebSocketSubscription("dev", "data");
    const realtimeBufferRef = useRef([]);
    const exportCountRef = useRef(200);
-   // 设置导出数据条数
+   const MAX_BUFFER_SIZE = 1000;
+
    const setExportCount = (count) => {
       exportCountRef.current = count;
    };
+
    // 数据缓冲区数据维护函数
    const pushToRealtimeBuffer = (newDataGroup) => {
       // newDataGroup: { time: "2025-09-29 01:40:57.091", data: [...] }
@@ -45,9 +47,11 @@ const WuyuanbiaobaContent = () => {
       // 合并到缓冲区
       realtimeBufferRef.current = [...realtimeBufferRef.current, group];
 
-      // 只保留最近200条数据
-      if (realtimeBufferRef.current.length > exportCountRef.current) {
-         realtimeBufferRef.current = realtimeBufferRef.current.slice(-exportCountRef.current);
+      // 只保留最大MAX_BUFFER_SIZE条数据
+      if (realtimeBufferRef.current.length > MAX_BUFFER_SIZE) {
+         realtimeBufferRef.current = realtimeBufferRef.current.slice(
+            -MAX_BUFFER_SIZE
+         );
       }
    };
    const {
@@ -200,12 +204,14 @@ const WuyuanbiaobaContent = () => {
    }, [realtimeDataSubscription.latest]);
 
    const dataExport = async () => {
-      const dataToExport = realtimeBufferRef.current;
-      if (dataToExport.length === 0) {
+      const count = exportCountRef.current || 200;
+      const buf = realtimeBufferRef.current;
+      if (buf.length === 0) {
          console.warn("没有数据可导出");
          return;
       }
-      // console.log('导出数据:', dataToExport);
+      // 只取最新的 count 条
+      const dataToExport = buf.slice(-count);
 
       // 收集所有出现过的desc，保持顺序且唯一
       const descSet = [];

package.json

@@ -1,6 +1,6 @@
 {
    "name": "wuyuanbiaoba-web",
-   "version": "1.0.1",
+   "version": "1.0.2",
    "main": "index.html",
    "scripts": {
       "test": "echo \"Error: no test specified\" && exit 1",