【问题描述】
在web组件的自定义响应数据方法如下:
Web().onInterceptRequest((event) => { … })
如果需要在callbak中如果使用Promise等获取异步信息,并读取该如何操作
【解决方案】
通过setResponseIsReady + setResponseData的方式控制数据返回,先设置setResponseIsReady为false,此时Web内核不会去读取response的内容。当获取到数据后再将其改为true后,Web内核才会去响应数据,参考以下demo:
前端页面index.html代码:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> </head> <body> <!-- 页面资源请求 --> <a href="https://www.example.com/test.html">intercept test!</a> </body> </html>
应用侧代码:
// xxx.ets import web_webview from '@ohos.web.webview'; @Entry @Component struct WebComponent { controller: web_webview.WebviewController = new web_webview.WebviewController() responseResource: WebResourceResponse = new WebResourceResponse() // 开发者自定义响应数据 @State webData: string = '<!DOCTYPE html>\n' + '<html>\n'+ '<head>\n'+ '<title>intercept test</title>\n'+ '</head>\n'+ '<body>\n'+ '<h1>intercept ok</h1>\n'+ '</body>\n'+ '</html>' build() { Column() { Web({ src: $rawfile('index.html'), controller: this.controller }) .onInterceptRequest((event) => { if (event) { console.info('url:' + event.request.getRequestUrl()); // 拦截页面请求 if (event.request.getRequestUrl() !== 'https://www.example.com/test.html') { return null; } } try { //模拟异步请求 new Promise((resolve)=>{ setTimeout(() => { console.info('responseweb->setTimeout after wait'); resolve('OK') }, 3000); }).then((result)=>{ if(result==='OK'){ this.responseResource.setResponseData(this.webData); this.responseResource.setResponseCode(200); this.responseResource.setReasonMessage('OK'); this.responseResource.setResponseIsReady(true); console.info('responseweb->set true'); } }); console.info('responseweb-> start setTimeout'); this.responseResource.setResponseMimeType('text/html'); this.responseResource.setResponseIsReady(false); console.info('responseweb->set false'); return this.responseResource; } catch (error) { console.error('responseweb->' + `${error.message}`); return new WebResourceResponse(); } }) } } }标签:Web,setResponseData,console,自定义,web,responseResource,setResponseIsReady,event From: https://www.cnblogs.com/mayism123/p/17896219.html