如何修复索引 [0] 处的 AXIOS_INSTANCE_TOKEN 可在模块上下文中找到

Question

我在项目中使用axios来调用一些第三方端点。我似乎不明白 错误

Nest can't resolve dependencies of the HttpService (?). Please make sure that the argument 
AXIOS_INSTANCE_TOKEN at index [0] is available in the TimeModule context.

Potential solutions:
- If AXIOS_INSTANCE_TOKEN is a provider, is it part of the current TimeModule?
- If AXIOS_INSTANCE_TOKEN is exported from a separate @Module, is that module imported within TimeModule?
  @Module({
    imports: [ /* the Module containing AXIOS_INSTANCE_TOKEN */ ]
  })

这是模块

@Module({
  imports: [TerminalModule,],
  providers: [TimeService, HttpService],
  controllers: [TimeController]
})
export class TimeModule { }

这就是服务

@Injectable()
export class TimeService {
    constructor(private httpService: HttpService,
        @InjectModel('PayMobileAirtime') private time: Model<Time>,       
        @Inject(REQUEST) private request: any,

    ) { }

这是我的 get 和 post 方法之一的示例

 async PrimeAirtimeProductList(telcotime: string) {
        let auth = await this.TimeAuth()
        const productList = await this.httpService.get(`https://clients.time.com/api/top/info/${telcotime}`,
            {
                headers: {
                    'Authorization': `Bearer ${auth.token}`
                }
            }
        ).toPromise();

        return productList.data
    }

发帖

const dataToken = await this.manageTimeAuth()
        const url = `https://clients.time.com/api/dataup/exec/${number}`

        const BuyTelcoData = await this.httpService.post(url, {
            "product_id": product_id,
            "denomination": amount,
            "customer_reference": reference_id
        }, {
            headers: {
                'Authorization': `Bearer ${dataToken.token}`
            }
        }).toPromise();

        const data = BuyTelcoData.data;

Answer 1

从

HttpModule

中的

@nestjs/common

导入

TimeModule

并将其添加到

imports

数组中。

从

HttpService

中的

providers

数组中删除

TimeModule

。您可以直接在

TimeService

中导入。

import { HttpModule } from '@nestjs/common';
...

@Module({
    imports: [TerminalModule, HttpModule],
    providers: [TimeService],
    ...
})

时间服务：

import { HttpService } from '@nestjs/common';

如果您的响应类型是

Observable

类型的

AxiosResponse

，则也将这两个导入到服务文件中

TimeService

。

import { Observable } from 'rxjs';
import { AxiosResponse } from 'axios';

作为参考，请查看 http-module 和这篇 post。

Answer 2

不要在提供者中传递 HttpService。仅导入 HttpModule。

Answer 3

这有效！

只需导入这个

import { HttpModule} from '@nestjs/axios';

然后将其添加到@Module的导入中，不要在providers中添加HttpService。