feat:对返回上一页做了处理

nkebao/src/api/utils.ts

@@ -1,5 +1,85 @@
 import { authApi } from './auth';
 
+// 节流函数 - 防止重复请求
+export const throttle = <T extends (...args: any[]) => any>(
+  func: T,
+  delay: number = 1000
+): T => {
+  let lastCall = 0;
+  let lastCallTimer: NodeJS.Timeout | null = null;
+  
+  return ((...args: any[]) => {
+    const now = Date.now();
+    
+    if (now - lastCall < delay) {
+      // 如果在节流时间内，取消之前的定时器并设置新的
+      if (lastCallTimer) {
+        clearTimeout(lastCallTimer);
+      }
+      
+      lastCallTimer = setTimeout(() => {
+        lastCall = now;
+        func(...args);
+      }, delay - (now - lastCall));
+    } else {
+      // 如果超过节流时间，直接执行
+      lastCall = now;
+      func(...args);
+    }
+  }) as T;
+};
+
+// 请求去重管理器
+class RequestDeduplicator {
+  private pendingRequests: Map<string, Promise<any>> = new Map();
+  
+  // 生成请求的唯一键
+  private generateKey(method: string, url: string, data?: any): string {
+    const dataStr = data ? JSON.stringify(data) : '';
+    return `${method}:${url}:${dataStr}`;
+  }
+  
+  // 执行请求，如果相同请求正在进行中则返回已存在的Promise
+  async execute<T>(
+    method: string,
+    url: string,
+    requestFn: () => Promise<T>,
+    data?: any
+  ): Promise<T> {
+    const key = this.generateKey(method, url, data);
+    
+    // 如果相同的请求正在进行中，返回已存在的Promise
+    if (this.pendingRequests.has(key)) {
+      console.log(`请求去重: ${key}`);
+      return this.pendingRequests.get(key)!;
+    }
+    
+    // 创建新的请求Promise
+    const requestPromise = requestFn().finally(() => {
+      // 请求完成后从pendingRequests中移除
+      this.pendingRequests.delete(key);
+    });
+    
+    // 将请求Promise存储到Map中
+    this.pendingRequests.set(key, requestPromise);
+    
+    return requestPromise;
+  }
+  
+  // 清除所有待处理的请求
+  clear() {
+    this.pendingRequests.clear();
+  }
+  
+  // 获取当前待处理请求数量
+  getPendingCount(): number {
+    return this.pendingRequests.size;
+  }
+}
+
+// 创建全局请求去重实例
+export const requestDeduplicator = new RequestDeduplicator();
+
 // 设置token到localStorage
 export const setToken = (token: string) => {
   if (typeof window !== 'undefined') {