對Flickr API的AJAX請求返回0個結果，但可與curl / postman一起使用

Question

我正在構建一個單頁Web應用程序，該應用程序向Flickr發出AJAX請求（使用Flickr API）。 當我使用curl或郵遞員嘗試請求時，它可以工作。 當我使用AJAX（jQuery）從Chrome瀏覽器進行嘗試時，返回200響應，狀態為“ OK”，但結果始終為0。 如果我將完全相同的URL（從字面上復制並粘貼）到郵遞員/卷曲中，則會得到結果。 我一定在做些愚蠢的事，但我無法弄清楚。

JavaScript代碼：

var photoQueryURL = 'https://api.flickr.com/services/rest/?' + $.param({
    'method': 'flickr.photos.search',
    'api_key': flickrAPIKey,
    'text': title,
    'tags': title,
    'format': 'json',
    'nojsoncallback': '1'
});
// AJAX Query:
$.ajax(photoQueryURL)
    .done(function(data) {
        console.log('Sucessful query.');
        console.log(data);
    })
    .fail(function(err) {
        console.log('Failed query.');
        console.log(err);
    });

AJAX查詢：

Request URL:https://api.flickr.com/services/rest/?method=flickr.photos.search&api_key=<my-key>&text=Alex%27s%20Pizzeria&tags=Alex%27s%20Pizzeria&format=json&nojsoncallback=1
Request Method:GET
Status Code:200 
Remote Address:69.147.64.33:443
Referrer Policy:no-referrer-when-downgrade
Response Headers
access-control-allow-origin:*
age:2
cache-control:private
content-encoding:gzip
content-length:83
content-type:application/json
date:Sat, 28 Oct 2017 21:59:02 GMT
p3p:policyref="https://policies.yahoo.com/w3c/p3p.xml", CP="CAO DSP COR CUR ADM DEV TAI PSA PSD IVAi IVDi CONi TELo OTPi OUR DELi SAMi OTRi UNRi PUBi IND PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA POL HEA PRE LOC GOV"
server:ATS
status:200
vary:Accept-Encoding
via:http/1.1 fts126.flickr.bf1.yahoo.com (ApacheTrafficServer [cMsSf ]), http/1.1 e22.ycpi.cha.yahoo.com (ApacheTrafficServer [cMsSf ])
x-content-type-options:nosniff
x-frame-options:SAMEORIGIN
x-served-by:www-bm006.flickr.bf1.yahoo.com
Request Headers
:authority:api.flickr.com
:method:GET
:path:/services/rest/?method=flickr.photos.search&api_key=<my-key>&text=Alex%27s%20Pizzeria&tags=Alex%27s%20Pizzeria&format=json&nojsoncallback=1
:scheme:https
accept:application/json, text/javascript, */*; q=0.01
accept-encoding:gzip, deflate, br
accept-language:en-US,en;q=0.9
cache-control:no-cache
origin:null
pragma:no-cache
user-agent:Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.75 Safari/537.36
Query String Parameters
view source
view URL encoded
method:flickr.photos.search
api_key:<my-key>
text:Alex's Pizzeria
tags:Alex's Pizzeria
format:json
nojsoncallback:1

AJAX回應：

{"photos":{"page":1,"pages":0,"perpage":100,"total":"0","photo":[]},"stat":"ok"}

用curl查詢：

curl -k "https://api.flickr.com/services/rest/?method=flickr.photos.search&api_key=<my-key>&text=Alex%27s%20Pizza&tags=Alex%27s%20Pizza&format=json&nojsoncallback=1"

回應（注意5個結果）：

{"photos": {"page": 1, "pages": 1, "perpage": 100, "total": "5",
"photo": [{"id":(...)}]},
"stat":"ok"}

建議？

--Jim

Answer 1

您的代碼是正確的。 我已經建立了一個Flickr帳戶來重現您的問題。

我添加了以下代碼以打印結果：

var len = data.photos.photo.length, html = "";
if (len > 0) {
  var i;
  for (i = 0; i < len; i++) {
    html += "<li>";
    html += data.photos.photo[i].title;
    html += "</li>";
  }
  $("#list").html(html);
}

像這樣：

 (function() { $("#form").on("submit", function(e) { var flickrAPIKey = "39417c145483a7fb3ee91c5fe5bc93fe", title = $("#txtInput").val(); var photoQueryURL = 'https://api.flickr.com/services/rest/?' + $.param({ 'method': 'flickr.photos.search', 'api_key': flickrAPIKey, 'text': title, 'tags': title, 'format': 'json', 'nojsoncallback': '1' }); // AJAX Query: $.ajax(photoQueryURL) .done(function(data) { console.log('Sucessful query.'); var len = data.photos.photo.length, html = ""; if (len > 0) { var i; for (i = 0; i < len; i++) { html += "<li>"; html += data.photos.photo[i].title; html += "</li>"; } $("#list").html(html); } }) .fail(function(err) { console.log('Failed query.'); console.log(err); }); e.preventDefault(); }); })(); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <form id="form"> <label for="txtInput">Input:</label> <input id="txtInput" type="text" /> <button type="submit">Send</button> <hr /> <ul id="list"></ul> </form> 

Access-Control-Allow-Origin: *標頭存在。

Answer 2

 $(function() { //store public feed in URL var URL = "https://api.flickr.com/services/feeds/photos_public.gne?jsoncallback=?"; //create searchInfo object var searchInfo = { tags : $('#searchfield').val(), tagmode : "any", format : "json" }; //when search button is clicked $('#searchbtn').click(function(){ //update the search info object searchInfo.tags = $('#searchfield').val(); //get JSON $.getJSON(URL,searchInfo,function(data){ var photoHTML = ''; //loop through each photo object $.each(data.items, function(i, photo) { photoHTML += '<span class ="image">'; photoHTML += '<a href="' + photo.link + '">'; photoHTML += '<img src ="' + photo.media.m.replace('_m','_s')+'"></a></span>'; });// end each //add the HTML to the page $('#images').append(photoHTML); }); // end get JSON }); //end click }); //end ready 

 .image { padding: 10px; margin: 0 30px 30px 0; } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> <!DOCTYPE html> <html> <head> <title>Flickr Search for example kitten :)</title> </head> <body> <h1>Flickr Search</h1> <h4>Search for any image here!</h4> <input type="text" id="searchfield" /> <button id ="searchbtn">Search</button> <div id="images"> </div> </body> </html> 

Answer 3

 /* Create an api to get an API KEY here: https://www.flickr.com/services/apps/create/ Documentation for searching photos: https://www.flickr.com/services/api/flickr.photos.search.html */ $('.fetch-button').click(function() { var $button = $(this); var photoUrl; $button.text('Loading...'); // Set text of button to loading $button.attr('disabled', 'disabled'); // Disable button $('.output').empty(); // Clear out results //what you are looking for var lookingfor = $('#wording').prop('value'); var perpage = $('#per_page').prop('value'); var page = $('#page').prop('value'); var lowlang = $('#lang').prop('value'); var lang = lowlang.toLowerCase() + '-' + $('#lang').prop('value'); var api_key = 'e0246bb8460f3650cef44a21d89d4c60'; var sort = $('#sort').prop('value'); var content_type = $('#content_type').prop('value'); console.log(lang) $.ajax({ method: 'GET', url: 'https://api.flickr.com/services/rest?sort=' + sort + '&parse_tags=1&content_type=' + content_type + '&extras=can_comment,count_comments,count_faves,description,isfavorite,license,media,needs_interstitial,owner_name,path_alias,realname,rotation,url_c,url_l,url_m,url_n,url_q,url_s,url_sq,url_t,url_z&per_page=' + perpage + '&page=' + page + '&lang=' + lang + '&text=' + lookingfor + '&viewerNSID=&method=flickr.photos.search&csrf=&api_key=' + api_key + '&format=json&hermes=1&hermesClient=1&reqId=e626c8a6&nojsoncallback=1' }).done(function(data) { console.log(data); if (!data.photos) { return; } $.each(data.photos.photo, function(key, photo) { photoUrl = 'https://farm' + photo.farm + '.staticflickr.com/' + photo.server + '/' + photo.id + '_' + photo.secret + '_q.jpg'; $('.output').append('<img src="' + photoUrl + '">'); }); }).always(function() { $button.text('Fetch Data'); // Reset button text $button.removeAttr('disabled'); // Enable button to be clicked again }); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js"></script> <div class="wrapper"> <h1>Flickr API own by fetching all call rest api</h1> <input placeholder="search" id="wording" type="text" value="" name="search"/> <input placeholder="user_id" id="user_id" type="text" value="" name="user_id"/> <input placeholder="tags" id="tags" type="text" value="" name="tags"/> <input placeholder="tag_mode" id="tag_mode" type="text" value="" name="tag_mode"/> <input placeholder="text" id="text" type="text" value="" name="text"/> <input placeholder="min_upload_date" id="min_upload_date" type="text" value="" name="min_upload_date"/> <input placeholder="max_upload_date" id="max_upload_date" type="text" value="" name="max_upload_date"/> <input placeholder="min_taken_date" id="min_taken_date" type="text" value="" name="min_taken_date"/> <input placeholder="max_taken_date" id="max_taken_date" type="text" value="" name="max_taken_date"/> <input placeholder="license" id="license" type="text" value="" name="license"/> <input placeholder="sort" id="sort" type="text" value="relevance" name="sort"/> <input placeholder="privacy_filter" id="privacy_filter" type="text" value="" name="privacy_filter"/> <input placeholder="bbox" id="bbox" type="text" value="" name="bbox"/> <input placeholder="accuracy" id="accuracy" type="text" value="" name="accuracy"/> <input placeholder="safe_search" id="safe_search" type="text" value="" name="safe_search"/> <input placeholder="content_type" id="content_type" type="text" value="7" name="content_type"/> <input placeholder="machine_tags" id="machine_tags" type="text" value="" name="machine_tags"/> <input placeholder="machine_tag_mode" id="machine_tag_mode" type="text" value="" name="machine_tag_mode"/> <input placeholder="group_id" id="group_id" type="text" value="" name="group_id"/> <input placeholder="contacts" id="contacts" type="text" value="" name="contacts"/> <input placeholder="woe_id" id="woe_id" type="text" value="" name="woe_id"/> <input placeholder="place_id" id="place_id" type="text" value="" name="place_id"/> <input placeholder="media" id="media" type="text" value="" name="media"/> <input placeholder="has_geo" id="has_geo" type="text" value="" name="has_geo"/> <input placeholder="geo_context" id="geo_context" type="text" value="" name="geo_context"/> <input placeholder="lat" id="lat" type="text" value="" name="lat"/> <input placeholder="lon" id="lon" type="text" value="" name="lon"/> <input placeholder="radius" id="radius" type="text" value="" name="radius"/> <input placeholder="radius_units" id="radius_units" type="text" value="" name="radius_units"/> <input placeholder="is_commons" id="is_commons" type="text" value="" name="is_commons"/> <input placeholder="in_gallery" id="in_gallery" type="text" value="" name="in_gallery"/> <input placeholder="is_getty" id="is_getty" type="text" value="" name="is_getty"/> <input placeholder="extras" id="extras" type="text" value="" name="extras"/> <input placeholder="per_page" id="per_page" type="text" value="25" name="per_page"/> <input placeholder="page" id="page" type="text" value="1" name="page"/> <select id="lang" name="lang" data-placeholder="Choose a Language..."> <option value="AF">Afrikanns</option> <option value="SQ">Albanian</option> <option value="AR">Arabic</option> <option value="HY">Armenian</option> <option value="EU">Basque</option> <option value="BN">Bengali</option> <option value="BG">Bulgarian</option> <option value="CA">Catalan</option> <option value="KM">Cambodian</option> <option value="ZH">Chinese (Mandarin)</option> <option value="HR">Croation</option> <option value="CS">Czech</option> <option value="DA">Danish</option> <option value="NL">Dutch</option> <option value="EN" selected>English</option> <option value="ET">Estonian</option> <option value="FJ">Fiji</option> <option value="FI">Finnish</option> <option value="FR">French</option> <option value="KA">Georgian</option> <option value="DE">German</option> <option value="EL">Greek</option> <option value="GU">Gujarati</option> <option value="HE">Hebrew</option> <option value="HI">Hindi</option> <option value="HU">Hungarian</option> <option value="IS">Icelandic</option> <option value="ID">Indonesian</option> <option value="GA">Irish</option> <option value="IT">Italian</option> <option value="JA">Japanese</option> <option value="JW">Javanese</option> <option value="KO">Korean</option> <option value="LA">Latin</option> <option value="LV">Latvian</option> <option value="LT">Lithuanian</option> <option value="MK">Macedonian</option> <option value="MS">Malay</option> <option value="ML">Malayalam</option> <option value="MT">Maltese</option> <option value="MI">Maori</option> <option value="MR">Marathi</option> <option value="MN">Mongolian</option> <option value="NE">Nepali</option> <option value="NO">Norwegian</option> <option value="FA">Persian</option> <option value="PL">Polish</option> <option value="PT">Portuguese</option> <option value="PA">Punjabi</option> <option value="QU">Quechua</option> <option value="RO">Romanian</option> <option value="RU">Russian</option> <option value="SM">Samoan</option> <option value="SR">Serbian</option> <option value="SK">Slovak</option> <option value="SL">Slovenian</option> <option value="ES">Spanish</option> <option value="SW">Swahili</option> <option value="SV">Swedish </option> <option value="TA">Tamil</option> <option value="TT">Tatar</option> <option value="TE">Telugu</option> <option value="TH">Thai</option> <option value="BO">Tibetan</option> <option value="TO">Tonga</option> <option value="TR">Turkish</option> <option value="UK">Ukranian</option> <option value="UR">Urdu</option> <option value="UZ">Uzbek</option> <option value="VI">Vietnamese</option> <option value="CY">Welsh</option> <option value="XH">Xhosa</option> </select> <button class="fetch-button">Fetch Data</button> <div class="output"> </div> </div>