从 Angular 中的 URL 获取查询参数

左手的ㄟ右手 2024-04-18 08:19 56阅读 0赞

本文介绍了如何从 Angular 中的 URL 获取查询参数。

通过注入ActivatedRoute的实例，可以订阅各种可观察对象，包括queryParams和params observable。以下是范例：

import { ActivatedRoute } from '@angular/router';  // 用于获取路由参数
    import { Component, OnInit } from '@angular/core';
    import { DomSanitizer } from '@angular/platform-browser'; // 用于HTML过滤
    import { Location } from '@angular/common'; // 用于回退浏览记录
    
    import { NewsDetailService } from '../news-detail.service';
    
    @Component({
      selector: 'app-news-detail',
      templateUrl: './news-detail.component.html',
      styleUrls: ['./news-detail.component.css']
    })
    export class NewsDetailComponent implements OnInit {
    
      newsDetailData = null;
      newsUrl = null;
    
      constructor(private newsDetailService: NewsDetailService,
        private domSanitizer: DomSanitizer,
        private route: ActivatedRoute,
        private location: Location) { }
    
      ngOnInit() {
        this.showNewsDetailData();
      }
    
      // 展示新闻详情数据
      showNewsDetailData() {
        this.route.queryParams.subscribe(p => {
          this.newsUrl = p.newsUrl // 获取参数
    
          this.newsDetailService.getNewsData(this.newsUrl).subscribe(
            (newsApiData) => this.newsDetailData =
              this.domSanitizer.bypassSecurityTrustHtml(newsApiData.toString()) //HTML过滤
          );
    
        });
      }
    
      // 返回
      goback() {
        // 浏览器回退浏览记录
        this.location.back();
      }
    }

## 参考引用 ##

*  本文同步至: [https://waylau.com/get-query-params-from-url-in-angular/][https_waylau.com_get-query-params-from-url-in-angular]
 *  完整源码：[https://github.com/waylau/angular-enterprise-application-development-samples][https_github.com_waylau_angular-enterprise-application-development-samples]
 *  《[Angular企业级应用开发实战][Angular]》

[https_waylau.com_get-query-params-from-url-in-angular]: https://waylau.com/get-query-params-from-url-in-angular/
[https_github.com_waylau_angular-enterprise-application-development-samples]: https://github.com/waylau/angular-enterprise-application-development-samples
[Angular]: https://search.jd.com/Search?keyword=%E6%9F%B3%E4%BC%9F%E5%8D%AB%20Angular%E4%BC%81%E4%B8%9A%E7%BA%A7%E5%BA%94%E7%94%A8%E5%BC%80%E5%8F%91%E5%AE%9E%E6%88%98&enc=utf-8&wq=%E6%9F%B3%E4%BC%9F%E5%8D%AB%20Angular%E4%BC%81%E4%B8%9A%E7%BA%A7%E5%BA%94%E7%94%A8%E5%BC%80%E5%8F%91%E5%AE%9E%E6%88%98&pvid=26dca7699970469ba0f6455f689bd4eb