Javascript 使用apollo数据源rest从响应中读取标头

假设我使用

this.get

go执行一个get请求。如何读取响应中的标题？apollo datasource rest包中是否完全缺少此功能？

在RESTDataSource中的didReceiveResponse方法中，您可以访问响应对象。在RESTDataSource类中定义/重写如下：

import { RESTDataSource } from 'apollo-datasource-rest';

export class Foo extends RESTDataSource {

    async getFoo(id) {
        const responseFoo = await this.get(`/api/v1/foo/${id}`);
        return FooReducer(responseFoo);
    }
}

willSendRequest方法（您可以在其中访问req对象和设置头等）在触发http请求之前运行，并且在接收到http请求的响应后调用didReceiveResponse方法

export class Foo extends RESTDataSource {

    async didReceiveResponse(response, request) {
        // use this.authHeader value in the class anywhere
        this.authHeader = response.headers.get('authorization');
    }
    
    async getFoo(id) {
        const responseFoo = await this.get(`/api/v1/foo/${id}`);
        console.log(this.authHeader)
        return FooReducer(responseFoo);
    }
}