如何在Spring Boot 2和Angular中设置not found页面

import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class CustomErrorController implements ErrorController {

    @RequestMapping("/error")
    public String error() {
        // 处理404错误，返回自定义的错误页面
        return "not-found";
    }

    @Override
    public String getErrorPath() {
        return "/error";
    }
}

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { NotFoundComponent } from './not-found/not-found.component';

const routes: Routes = [
  // 其他路由配置...
  { path: '**', component: NotFoundComponent }
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

ng generate component not-found

ng build --prod