回送剩余连接器远程方法不起作用

时间:2018-09-28 04:43:44

标签: strongloop loopback

我正在将Loopback用作第三方API的API接口。 我正在尝试通过回送中的远程方法调用第三方API的方法。

在没有环回的情况下,成功调用第三方方法的方法如下:

public static double cosine(double x, int k) {
    double cosineresult = 0;
    double cosinedenominator = 1; // initial value 0! = 1; overflows at k = 86
    int j = 2; // next multiplier in denominator factorial (skip 1)
    for (int i = 0; i <= k; i++) {
        double cosinenumerator = Math.pow((-1),i) * Math.pow(x, (2 * i));
        // Continue calculation of factorial from last value
        while (j <= 2 * i) {
            cosinedenominator *= j++;
        }
        cosineresult += cosinenumerator / cosinedenominator;
    }
    return cosineresult;
}

使用Loopback,我有一个数据源,如下所示:

curl -X POST --header 'Content-Type: application/json' --header 'Accept: */*' --header 'authorization: Bearer eyJhbGciOiJIUzUxMiJ9....' -d '{ \ 
     "attr1":"123", \ 
     "attr2":"456" \ 
     }' 'http://third-party-host/plugins/aca74a80/'

,然后是类似以下的模型代码:

{
  ...
  "APIDataSource": {
     "name":"APIDataSource",
     "crud": false,
     "connector": "rest",
     "operations": [
        {
           "functions": {
              "saveEntityAttributes": ["entityId", "mrequest", "authkey"]
           },
           "template": {
              "method": "POST",
              "url": "http://third-party-host/plugins/{entityId}",
              "headers": {
                 "authorization":"Bearer {authkey}"
              },
              "json":"{mrequest}"
           }
        }
     ]
  }
}

这将引发错误:“请求不是json”很有意义,因为生成的“ json”内容是“ entityID”参数,而不是预期的“ mrequest”参数(其中包含json:“ {” attr1“:” 123“,” attr2“:” 456“}”),如回送日志所示:

'use strict';

module.exports = function(Model) {

Model.saveEntityAttributes = function(req, cb) {
    Model.app.models.MyAPI.saveEntityAttributes(req)
    .then(result => {
      console.log(result);
      cb(null, result);
    })
 }

Model.remoteMethod (

    'saveEntityAttributes',
    {
         http: {path: '/saveentityattributes', verb: 'post'},
         accepts: [ {arg: 'req', type: 'object', http: { source: 'req' } }],
         returns: {root: true}
    }

  );
};

我的问题是如何将“ mrequest”内容带入“ json”正文,而不是当前的“ entityId”内容?

欢迎任何建议。谢谢!

1 个答案:

答案 0 :(得分:0)

我已经解决了这个问题!

在数据源中,“ json”选项必须替换为: “ body”:“ {mrequest:object}”

然后,在模型代码中,必须将远程方法的当前“ req” http源替换为:“ query”

然后,回送日志显示正确的请求调用:

loopback:connector:rest Request: {"method":"POST","uri":"http://third-party-host/plugins/aca74a80","json":true,"headers":{"authorization":"Bearer eyJhbGciOiJIUzUxMiJ9..."},"body":{"art1":"1qa","atr2":"2ws"}} +0ms