Node js restler 在发出 2 个不同的 API 请求时返回相同的结果

Question

我正在尝试使用 restler 和量角器获取网站的 API，但是当我发出 2 个单独的 API 请求时，它会两次返回第一个请求的结果。

我的功能：

var url = undefined;
var rest = require('restler');
var defered = protractor.promise.defer();

var getDataFunction = function() {
  var url = 'https://example.api.testlodge.com/v1/projects/16702/runs/287053/executed_steps.json?page=1'

  rest.get(url, {
    headers: {
      'Connection': 'close'
    }
  }).on('complete', function(result) {
    if (result instanceof Error) {
      console.log('Error:', result.message);
      defered.reject(result.message);
      //this.retry(5000); // try again after 5 sec 
    } else {
      defered.fulfill(result);
      defered.promise.then(function(item) {
        console.log("fulfill", item);
      });
    }
  });
  return defered.promise;
};


var get2ndDataFunction = function() {

  rest.get('https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20in%20(select%20woeid%20from%20geo.places(1)%20where%20text%3D%22Hyderabad%2C%20Tel%2C%20india%22)&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys', {
    headers: {
      'Connection': 'close'
    }
  }).on('complete', function(result) {
    if (result instanceof Error) {
      console.log('Error:', result.message);
      defered.reject(result.message);
      //this.retry(5000); // try again after 5 sec 
    } else {
      defered.fulfill(result);
      defered.promise.then(function(item) {
        console.log("fulfill", item);
      });
    }
  });
  return defered.promise;
}

然后：

getDataFunction().then(function() {

  get2ndDataFunction();


});

运行上述脚本后的结果：

fulfill { pagination: { total_entries: 22, total_pages: 2, current_page: 1, next_page: 2, previous_page: null, per_page: 20 }, executed_steps: [ { id: 12712861, step_number: 'TC01', title: 'User should be able to view agent profile', description: 'Prerequisite:
\r\nUser is on the agent page, test_steps: '1. Ensure The following are present:\r\n\r\nAgent Image\r\nMobile Phone(mandatory)\r\nAfter Hours\r\nPhone\r\nProfile text\r\nRecommendations (if applicable)', expected_result: 'User is able to view the agent
image, contact details and the profile text and/or recommendations', stored_custom_fields: [Object], actual_result: null, passed: 1, issue_tracker_ticket_number: null, position: 1, run_id: 287053, run_section_id: 375586, last_saved_by_id: 34400, custom_fields:
[], created_at: '2017-10-24T20:38:06.000Z', updated_at: '2017-10-27T04:22:20.000Z' }, 

fulfill { pagination: { total_entries: 22, total_pages: 2, current_page: 1, next_page: 2, previous_page: null, per_page: 20 }, executed_steps: [ { id: 12712861, step_number:
'TC01', title: 'User should be able to view agent profile', description: 'Prerequisite: \r\nUser is on the agent page, test_steps: '1. Ensure The following are present:\r\n\r\nAgent Image\r\nMobile Phone(mandatory)\r\nAfter Hours\r\nPhone\r\nProfile text\r\nRecommendations
(if applicable)', expected_result: 'User is able to view the agent image, contact details and the profile text and/or recommendations', stored_custom_fields: [Object], actual_result: null, passed: 1, issue_tracker_ticket_number: null, position: 1, run_id:
287053, run_section_id: 375586, last_saved_by_id: 34400, custom_fields: [], created_at: '2017-10-24T20:38:06.000Z', updated_at: '2017-10-27T04:22:20.000Z' },

预期结果：

fulfill { pagination: { total_entries: 22, total_pages: 2, current_page: 1, next_page: 2, previous_page: null, per_page: 20 }, executed_steps: [ { id: 12712861, step_number: 'TC01', title: 'User should be able to view agent profile', description: 'Prerequisite:
\r\nUser is on the agent page, test_steps: '1. Ensure The following are present:\r\n\r\nAgent Image\r\nMobile Phone(mandatory)\r\nAfter Hours\r\nPhone\r\nProfile text\r\nRecommendations (if applicable)', expected_result: 'User is able to view the agent
image, contact details and the profile text and/or recommendations', stored_custom_fields: [Object], actual_result: null, passed: 1, issue_tracker_ticket_number: null, position: 1, run_id: 287053, run_section_id: 375586, last_saved_by_id: 34400, custom_fields:
[], created_at: '2017-10-24T20:38:06.000Z', updated_at: '2017-10-27T04:22:20.000Z' },


{"query":{"count":1,"created":"2017-10-29T23:48:57Z","lang":"en-GB","results":{"channel":{"units":{"distance":"mi","pressure":"in","speed":"mph","temperature":"F"},"title":"Yahoo! Weather - Hyderabad, Telangana.......

我不确定是 Restler 还是 promise 问题。

Answer 1

下面是答案；

var url = undefined;
var rest = require('restler');


var getDataFunction = function() {
  var defered = protractor.promise.defer();
  var url = 'https://example.api.testlodge.com/v1/projects/16702/runs/287053/executed_steps.json?page=1'

  rest.get(url, {
    headers: {
      'Connection': 'close'
    }
  }).on('complete', function(result) {
    if (result instanceof Error) {
      console.log('Error:', result.message);
      defered.reject(result.message);
      //this.retry(5000); // try again after 5 sec 
    } else {
      defered.fulfill(result);
      defered.promise.then(function(item) {
        console.log("fulfill", item);
      });
    }
  });
  return defered.promise;
};


var get2ndDataFunction = function() {
  var defered2 = protractor.promise.defer();

  rest.get('https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20in%20(select%20woeid%20from%20geo.places(1)%20where%20text%3D%22Hyderabad%2C%20Tel%2C%20india%22)&format=json&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys', {
    headers: {
      'Connection': 'close'
    }
  }).on('complete', function(result) {
    if (result instanceof Error) {
      console.log('Error:', result.message);
      defered2.reject(result.message);
      //this.retry(5000); // try again after 5 sec 
    } else {
      defered2.fulfill(result);
      defered2.promise.then(function(item) {
        console.log("fulfill", item);
      });
    }
  });
  return defered2.promise;
}

那么;

getDataFunction().then(function() {

  get2ndDataFunction();


});

Answer 2

protractor.promise 是一个暴露的 selenium-webdriver 命名空间，我相信 defer 方法自 selenium-webdriver 3 以来已被弃用。未显示您使用的 Protractor 版本。请查看selenium-webdriver changelog。 Protractor 在 Protractor 5 中使用this commit 进行了这些更改。