添加维护页面

src/app/view/maintain/maintain.component.html

@@ -0,0 +1,5 @@
+<nz-result nzStatus="500" nzTitle="暂时无法连接到后台服务器,可能正在维护更新">
+    <div nz-result-extra>
+        <button nz-button nzType="primary" routerLink="/">返回首页</button>
+    </div>
+</nz-result>

src/app/view/maintain/maintain.component.ts

@@ -0,0 +1,16 @@
+import {Component, OnInit} from '@angular/core';
+
+@Component({
+    selector: 'app-maintain',
+    templateUrl: './maintain.component.html',
+    styleUrls: ['./maintain.component.less']
+})
+export class MaintainComponent implements OnInit {
+
+    constructor() {
+    }
+
+    ngOnInit(): void {
+    }
+
+}

src/app/view/maintain/maintain.module.ts

@@ -0,0 +1,18 @@
+import {NgModule} from '@angular/core';
+import {CommonModule} from '@angular/common';
+import {MaintainComponent} from './maintain.component';
+import {RouterModule} from '@angular/router';
+import {NzButtonModule, NzResultModule} from 'ng-zorro-antd';
+
+
+@NgModule({
+    declarations: [MaintainComponent],
+    imports: [
+        CommonModule,
+        RouterModule.forChild([{path: '', component: MaintainComponent}]),
+        NzResultModule,
+        NzButtonModule
+    ]
+})
+export class MaintainModule {
+}