环回 API：响应卡在压缩状态

Question

如何使用环回解码“Content-Encoding: gzip, gzip”？

我创建了休息连接器以从以下 api 获得响应：“https://rest.cricketapi.com/rest/v2/match/dev_season_2014_q3/balls/?access_token=************************ **********”。

我参考了很多网站，特别是 https://github.com/strongloop/loopback/issues/1551 但我没有得到解决方案。以下是代码：

/server/datasources.json

    {
  "Datasource": {
    "host": "127.0.0.1",
    "port": 27017,
    "database": "dbname",
    "name": "dbname",
    "connector": "mongodb"
  },
  "cricketApi": {
    "name": "cricketApi",
    "baseURL": "https://rest.cricketapi.com/rest",
    "crud": false,
    "connector": "rest",
    "operations": [
      {
        "functions": {
          "auth": [
            "app_id"
          ]
        },
        "template": {
          "method": "POST",
          "url": "https://rest.cricketapi.com/rest/v2/auth/",
          "headers": {
            "accepts": "application/json",
            "content-type": "application/json"
          },
          "form": {
              "access_key": "*********",
              "secret_key": "**********",
              "app_id": "{^app_id}",
              "device_id": "********"
          }
        }
      },
      {
        "functions": {
          "ballbyball": [
            "access_token"
          ]
        },
        "template": {
          "method": "GET",
          "url": "https://rest.cricketapi.com/rest/v2/match/dev_season_2014_q3/balls/",
          "headers": {
            "accepts": "application/json",
            "content-type": "application/json"
          },
          "query": {
              "access_token": "{access_token}"
          }
        }
      },
      {
        "functions": {
          "getships": []
        },
        "template": {
          "method": "GET",
          "url": "http://swapi.co/api/starships/",
          "headers": {
            "accepts": "application/json",
            "content-type": "application/json"
          }
        }
      },
      {
        "functions": {
          "schedule": []
        },
        "template": {
          "method": "GET",
          "url": "https://rest.cricketapi.com/rest/v2/match/dev_season_2014_q3/balls/?access_token=*********",
          "headers": {
            "accepts": "application/json",
            "content-type": "application/json",
            "content-encoding": "gzip"
          }
        }
      }
    ]
  }
}

以下 api 正在运行，但输出 gzip 压缩：

{
    "functions": {
      "schedule": []
    },
    "template": {
      "method": "GET",
      "url": "https://rest.cricketapi.com/rest/v2/match/dev_season_2014_q3/balls/?access_token=2s151429438441649s961198289187901461",
      "headers": {
        "accepts": "application/json",
        "content-type": "application/json",
        "content-encoding": "gzip"
      }
    }
  }

它给出以下输出：

""\u001f�\b\u00006�yZ\u0002�Mo�0\f�J�s��\u001f(z�a�v\u0018P\u0014�,˩Q��l�M�濏�ӤY��\u0018�uX{H S\u0014��|l+�C�n١ĵK;E7�ʦF\tb\u0001\t8�n� S��\u0016%��)��E��ZX��a��\u0015��$ ��ٱ��hse��k��v��>��7igu��)#T�� }��\u0003��\;��;��hmˊ\u0018��˪��ڮ��ր��\f|��;T��uY��@\u000f}��\b�\��\u0011\tC��\t)\u0016ED��\u0015�*\u0012Y\u001c�Ȩ�\u0007�J�ޞ�Lb\u0011�\u0010�:�8�r��qa\n�\u0011J�\u0010\u001b�\u0005)8\u0016�\u00178�\"°R�\u0011��\u0018�\"\u0013Z_\u0006\�~�\b�\"N4Va(��\u0014ʂ�d*�3m��T�[�c�s�#�\u0005��2��p��\b\u0015�2c�3�ɂb%\"NM�\fU\f]N��z��6��\u000f~��m��� J�m;YQ>q�d{��c3i�u\u0017��\[��\u0002�@��?릝�\nf��U\u0005\u001f �zn;O�o\u000eh�5\u000fQ\u001fV�\u0000�E� 78=]�\bx\u0006/Lb�\u0017�\u0013N\u0012�\u0003E\u0015!�Q/z+!� \u0001... }��;YYs[\r��\u0004��I����}]��f��\n��\u000f\t��H��g�� 8j��}��HrG��\u0000|\u0017Cζ��{��P��\u0000Jur(��P��\u0015(թ��\u001c��\f�OD\t/lN\u000f��oO�\u001e>~*��F��3^��X\u0005L\u001d��c��oys\u001c|��a��&D\u0004p_\u001e��'b��>b��;��c��ΓρGG��7��8��β��\u001f��Oy\u001a��7u��;/ {\u001e$Ё0< S

我也试过运行 DEBUG=compression node . 看看压缩是如何使用的。您可以查看下面给出的屏幕截图

我也尝试在 server.js 文件中使用压缩 =>

var compression = require('compression');
app.use(compression());

并在 /server/middleware.json 中添加了以下行：

"compression": {
  "params": { "threshold": 512 }
}

但这对我不起作用。

但是当我使用以下代码正常调用它时，我知道它是如何工作的：

    var http = require('http');

var request = require('request'), zlib = require('zlib');

    var headers = {
      'Accept-Encoding': 'gzip'
    };

request({url:'https://rest.cricketapi.com/rest/v2/match/dev_season_2014_q3/balls/?access_token=2s151429438441649s96119828918*****', 'headers': headers})
    .pipe(zlib.createGunzip()) // unzip
    .pipe(process.stdout); //

http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/html'});
    res.end('Hello World!');
}).listen(8080);

如果我在 loopback rest connector 中得到解决方案，那将是非常有用的。谢谢！

Answer 1

我觉得这个 link 会帮助你... Ryan Knell 发布了这个答案

我们只需要在我的请求中添加"gzip: true"，因为请求已经支持

https://github.com/request/request

Answer 2

终于找到了我的问题的答案：我创建了模型： /common/models/cricketapi.js 并编写如下代码：

'use strict';

module.exports = function(Cricketapi) {

// Ball By Ball API: 
// @params: access_token and match_key

Cricketapi.ballbyball = function(access_token, match_key, cb){
    var request = require('request');

    request(
        { 
            method: 'GET',
            uri: 'https://rest.cricketapi.com/rest/v2/match/'+match_key+'/balls/?access_token='+access_token,
            gzip: true
        },
        function (error, response, body) {
          cb(null, JSON.parse(body));
        }
      )
};

Cricketapi.remoteMethod (
    'ballbyball',
    {
      http: {path: '/ballbyball', verb: 'get'},
      accepts: [
          {arg: 'access_token', type: 'string', http: { source: 'query' }},
          {arg: 'match_key', type: 'string', http: { source: 'query' }}
        ],
      returns: {arg: 'response', type: 'Object'}
    }

  );
};

我得到以下输出：

我们需要在请求中添加"gzip: true"。

环回 API：响应卡在压缩状态

Loopback API: Response getting stuck at compression

api

loopback

node.js