修复前端

manual_trading_hub/static/app.js

@@ -294,15 +294,34 @@
     }
   }
 
+  async function parseJsonResponse(r) {
+    const text = await r.text();
+    if (!text) return {};
+    try {
+      return JSON.parse(text);
+    } catch (e) {
+      const snippet = text.slice(0, 200);
+      throw new Error(
+        `HTTP ${r.status} 响应不是 JSON：${snippet}${text.length > 200 ? "…" : ""}`
+      );
+    }
+  }
+
   async function submitForm(path, formEl) {
     const id = document.getElementById("trade-account").value;
     const fd = new FormData(formEl);
     try {
       const r = await fetch(path + encodeURIComponent(id), { method: "POST", body: fd });
-      const j = await r.json();
+      const j = await parseJsonResponse(r);
       const res = j.result || {};
-      const msgs = (res.messages || []).join("\n") || JSON.stringify(res, null, 2);
-      showToast(msgs, !res.ok);
+      const msgs =
+        (res.messages || []).join("\n") ||
+        res.error ||
+        res.msg ||
+        res.text ||
+        JSON.stringify(res, null, 2);
+      const failed = res.ok === false || r.status >= 400 || !!res.error || !!res.text;
+      showToast(msgs || (failed ? "操作失败" : "已提交"), failed);
       if (res.ok && res.preview) {
         showTrendPreview(res);
       }