我正在使用DirectLine v3在我的网站中实现一个使用Azure Bot Framework的机器人。我试图按照此处的说明开始对话:https://docs.microsoft.com/en-us/azure/bot-service/rest-api/bot-framework-rest-direct-line-3-0-start-conversation?view=azure-bot-service-4.0
[当我发送HTTP帖子时,我收到状态为403禁止的响应错误。有人可以建议我为什么收到403禁止响应吗?我在Angular应用程序中使用它。
我的HTTP帖子代码:
import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders } from '@angular/common/http'
import 'rxjs/Rx';
@Injectable()
export class BotFramework {
secret = 'SECRET';
constructor(private httpClient: HttpClient) {}
authenticate() {
const headerAuth = new Headers({
'Authorization': 'Bearer ' + this.secret
});
return this.httpClient.post('https://directline.botframework.com/v3/directline/conversations',{
observe: 'response',
response: 'json',
})
.map(
(response) => {
const data = response;
console.log('Returned response: ' + response);
return data;
}
)
}
}
我在这里的Angular组件中使用它:
//Azure Bot Framework code goes here
setTimeout(() => {
this.botFramework.authenticate()
.subscribe(
(authentification: any) => {
console.log(authentification);
(error) => console.log('Authentification error: ' + error);
}
)
}, 1000)
因此该消息说,缺少一个机密或令牌(我提供了机密)。我认为在设置HTTP Post时我一定做错了,因为Azure无法找到我的秘密。如果我正确地假定这是错误,那么如何正确发送HTTP Post以使Azure找到密钥?
好的,我找到了答案。因此,为了通过Azure Bot Framework DirectLine API进行身份验证,我不得不在Angular应用程序中使用HTTP拦截器。本质上,当我发送HTTP Post请求时,它被拦截器拦截,并在其中添加带有授权密钥的标头。参见拦截器代码:
import { HttpInterceptor, HttpRequest, HttpHandler, HttpEvent } from
'@angular/common/http';
import { Observable } from 'rxjs';
import { Injectable } from '@angular/core';
import { BotFramework } from '../Services/botFrameworkDirectLine.service';
@Injectable()
export class AuthInterceptor implements HttpInterceptor {
constructor(private botFramework: BotFramework) {}
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
console.log('Intercepted', req);
const copiedReq = req.clone({headers: req.headers.set('Authorization',
this.botFramework.secret)});
return next.handle(copiedReq);
}
}
这里是我发布帖子的代码,与上面的代码几乎相同,除了一个秘密变量:
import { Injectable } from '@angular/core';
import { HttpClient} from '@angular/common/http'
import 'rxjs/Rx';
@Injectable()
export class BotFramework {
secret = 'Bearer SECRET';
constructor(private httpClient: HttpClient) {}
authenticate() {
return this.httpClient.post(
'https://directline.botframework.com/v3/directline/conversations',{
observe: 'body',
response: 'json',
})
.map(
(response) => {
const data = response;
console.log('Returned response: ' + response);
return data;
}
)
}
}
在我的Angular应用程序的app.module.ts文件中,拦截器是通过这种方式导入的(请参阅提供者):
@NgModule({
declarations: [
AppComponent,
HeaderComponent,
BreadcrumbComponent,
TopicComponent,
HubComponent,
ComputerHardwareComponent,
BotComponent,
PopularTopicsComponent,
LoginComponent,
GraphicsCardsComponent
],
imports: [
BrowserModule,
FormsModule,
HttpClientModule,
HttpModule
],
providers: [
KeywordExtractor,
Translator,
BotFramework,
{provide: HTTP_INTERCEPTORS, useClass: AuthInterceptor, multi: true}
],
bootstrap: [AppComponent]
})
export class AppModule { }
最终结果是我从Azure Bot Service DirectLine连接得到正确的响应:
这提供了我自己的问题的答案,现在我可以继续开发应用程序了:)