添加生成安全随机标识符功能以改进文件上传逻辑

packageRc/pages/daiban/addbangfu.vue

@@ -566,15 +566,42 @@ export default {
       this.serviceForm.practicalSolutionTime = `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, '0')}-${String(date.getDate()).padStart(2, '0')} ${String(date.getHours()).padStart(2, '0')}:${String(date.getMinutes()).padStart(2, '0')}`;
     },
     
+    // 使用密码学安全随机源生成标识符
+    generateSecureId(length = 16) {
+      const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+      const charsLength = chars.length;
+      const randomBytes = new Uint8Array(length);
+
+      // H5/现代浏览器
+      if (typeof globalThis !== 'undefined' && globalThis.crypto && typeof globalThis.crypto.getRandomValues === 'function') {
+        globalThis.crypto.getRandomValues(randomBytes);
+      }
+      // 微信小程序环境
+      else if (typeof wx !== 'undefined' && typeof wx.getRandomValues === 'function') {
+        wx.getRandomValues(randomBytes);
+      }
+      // 兜底：若运行环境不支持 CSPRNG，显式报错，避免继续使用可预测随机数
+      else {
+        throw new Error('当前环境不支持密码学安全随机数，请在服务端生成标识符');
+      }
+
+      let id = '';
+      for (let i = 0; i < length; i++) {
+        id += chars[randomBytes[i] % charsLength];
+      }
+      return id;
+    },
+
     // 触发文件上传
     triggerFileUpload() {
       if (this.serviceForm.fileUrl.length < 6) {
         // 模拟添加文件
         const mockFiles = ['文档.pdf', '图片.jpg', '表格.xlsx', '报告.docx'];
-        const randomFile = mockFiles[Math.floor(Math.random() * mockFiles.length)];
+        const secureId = this.generateSecureId(20);
+        const randomFile = mockFiles[Date.now() % mockFiles.length];
         this.serviceForm.fileUrl.push({
           name: randomFile,
-          url: `mock-url/${Date.now()}/${randomFile}`
+          url: `mock-url/${secureId}/${randomFile}`
         });
       } else {
         uni.showToast({ title: '最多只能上传6个文件', icon: 'none' });