fix localized login network error

frontend/platform_admin/src/api/http.ts

@@ -7,14 +7,19 @@ export type PageResult<T> = { total: number; list: T[] };
 
 export async function request<T>(path: string, init?: RequestInit): Promise<T> {
   const token = localStorage.getItem(tokenStorageKey);
-  const response = await fetch(`${apiBaseURL}${path}`, {
-    ...init,
-    headers: {
-      'Content-Type': 'application/json',
-      ...(token ? { Authorization: token } : {}),
-      ...(init?.headers ?? {}),
-    },
-  });
+  let response: Response;
+  try {
+    response = await fetch(`${apiBaseURL}${path}`, {
+      ...init,
+      headers: {
+        'Content-Type': 'application/json',
+        ...(token ? { Authorization: token } : {}),
+        ...(init?.headers ?? {}),
+      },
+    });
+  } catch {
+    throw new Error('无法连接服务器，请确认服务已启动');
+  }
   const payload = (await response.json()) as { code?: number; message?: string; details?: T };
   if (!response.ok || payload.code !== 0) throw new Error(payload.message || '请求失败');
   return payload.details as T;

frontend/platform_admin/src/views/login/components/login-form.vue

@@ -2,7 +2,6 @@
   <div class="login-form-wrapper">
     <div class="login-form-title">登录和气平台</div>
     <div class="login-form-sub-title">使用平台管理员账户登录</div>
-    <div class="login-form-error-msg">{{ errorMessage }}</div>
     <a-form
       ref="loginForm"
       :model="userInfo"
@@ -51,6 +50,9 @@
             记住用户名
           </a-checkbox>
         </div>
+        <div v-if="errorMessage" class="login-form-error-msg">
+          {{ errorMessage }}
+        </div>
         <a-button type="primary" html-type="submit" long :loading="loading">
           登录
         </a-button>
@@ -93,6 +95,7 @@ const handleSubmit = async ({
 }) => {
   if (loading.value) return;
   if (!errors) {
+    errorMessage.value = '';
     setLoading(true);
     try {
       await userStore.login(values as LoginData);
@@ -105,7 +108,7 @@ const handleSubmit = async ({
       });
       Message.success('登录成功');
       const { rememberPassword } = loginConfig.value;
-      const { username, password } = values;
+      const { username } = values;
       loginConfig.value.username = rememberPassword ? username : '';
       loginConfig.value.password = '';
     } catch (err) {