在Angular中，我们可以通过使用Angular的内置查询参数来传输数据，而一个URL中可能需要包含多个查询参数。下面是处理多个查询参数的示例代码：

首先，在路由文件中定义需要的查询参数：

const routes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'search', component: SearchComponent },
  { path: 'products', component: ProductsComponent },
  { path: 'products/:id', component: ProductDetailComponent },
  { path: 'contact', component: ContactComponent },
  { path: '**', component: PageNotFoundComponent }
];

接着，在需要的组件中使用QueryParams订阅查询参数的值：

import { Component, OnInit } from '@angular/core';
import { ActivatedRoute } from '@angular/router';

@Component({
  selector: 'app-search',
  templateUrl: './search.component.html',
  styleUrls: ['./search.component.css']
})
export class SearchComponent implements OnInit {
  queryText: string;
  category: string;

  constructor(private route: ActivatedRoute) {}

  ngOnInit() {
    // 订阅查询参数的值
    this.route.queryParams.subscribe(params => {
      this.queryText = params['q'];
      this.category = params['category'];
    });
  }
}

最后，在需要发送请求的地方，使用HttpClientModule来发送带有查询参数的请求：

import { Component, OnInit } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Component({
  selector: 'app-products',
  templateUrl: './products.component.html',
  styleUrls: ['./products.component.css']
})
export class ProductsComponent implements OnInit {
  products: any[];

  constructor(private http: HttpClient) {}

  ngOnInit() {
    // 发送带有查询参数的请求
    this.http.get('/api/products', { params: { category: 'electronics', price: '100' } })
      .subscribe((products: any[]) => {
        this.products = products;
      });
  }
}

这样，我们就可以在Angular中处理多个查询参数了。