javascript - 如何使用loopback 4执行post请求

Question

经过一番研究，我发现了环回代理服务，它允许我使用 get 方法进行一些查询。但我不知道如何使用请求正文中的数据执行 POST 请求。

我的服务

import {getService} from '@loopback/service-proxy';
import {inject, Provider} from '@loopback/core';
import {StorageApiDataSource} from '../datasources';
/**
 * user for  both storageApi service and authApi service
 */
export interface StorageApiService {
  // this is where you define the Node.js methods that will be
  // mapped to the SOAP operations as stated in the datasource
  // json file.

  getrestdata(id?: number): Promise<StorageApiResponseData>;
  saveFile(token?: string,requestBody:any): Promise<StorageApiResponseData>;

}
export interface StorageApiResponseData {
  file_id: string;
  direct_url: string;
}

export class StorageApiServiceProvider implements Provider<StorageApiService> {
  constructor(
    // storageApi must match the name property in the datasource json file
    @inject('datasources.storageApi')
    protected dataSource: StorageApiDataSource = new StorageApiDataSource(),
  ) {}

  value(): Promise<StorageApiService> {
    return getService(this.dataSource);
  }
}

Answer 1

在数据源文件中，为操作数组内的 post 函数添加一个模板，其中 postFunction 是函数名称。并在您的服务接口(interface)中添加相同的内容。

"operations": [{
      "template": {
        "method": "POST",
        "url": "{POST-API-URL}",
        "headers": {
          "accepts": "application/json",
          "content-type": "application/json"
        },
        "json": {
          "param1": "{value1}",
          "param2": "{value2}",
          "param3": "{value3}"
        }
      },
      "functions": {
        "postFunction": [
          "value1",
          "value2",
          "value3"
        ]
      }
    }]