api - 环回连接器 REST API

Question

如何在 Loopback 上创建外部 API？

我想获取外部 API 数据并在我的环回应用程序中使用它，并将输入从我的环回传递到外部 API 并返回结果或响应。

Answer 1

环回有non-database connectors的概念，包括 REST connector .来自文档:

LoopBack supports a number of connectors to backend systems beyond databases.

These types of connectors often implement specific methods depending on the underlying system. For example, the REST connector delegates calls to REST APIs while the Push connector integrates with iOS and Android push notification services.

如果您发布有关要调用的 API 调用的详细信息，那么我可以为您添加一些更具体的代码示例。同时，这也来自文档:

datasources.json

MyModel": {
  "name": "MyModel",
  "connector": "rest",
  "debug": false,
  "options": {
    "headers": {
      "accept": "application/json",
      "content-type": "application/json"
    },
    "strictSSL": false
  },
  "operations": [
    {
      "template": {
        "method": "GET",
        "url": "http://maps.googleapis.com/maps/api/geocode/{format=json}",
        "query": {
          "address": "{street},{city},{zipcode}",
          "sensor": "{sensor=false}"
        },
        "options": {
          "strictSSL": true,
          "useQuerystring": true
        },
        "responsePath": "$.results[0].geometry.location"
      },
      "functions": {
        "geocode": ["street", "city", "zipcode"]
      }
    }
  ]
}

然后您可以通过代码调用此 api:

app.dataSources.MyModel.geocode('107 S B St', 'San Mateo', '94401', processResponse);