我正在尝试使用javascript sdk恢复我的facebook新闻Feed中的上周帖子。 我能够获得第一页,但后来,我不知道如何继续迭代其他页面。我用以下代码尝试过它:
$('#loadPosts').bind('click', function() {
FB.api('/me/home',{since:'last week'}, getPosts);
});
getPosts = function(response){
for (element in response.data){
post = response.data[element]
console.log(post);
}
previousPage = response.paging.previous;
console.log(previousPage);
// can i call FB.api(previousPage, getPosts); ??
}
但我收到一个URL作为上一页,我不知道如何从该URL进行javascript FB.api调用。有什么想法吗?
答案 0 :(得分:31)
好吧,对于一个简单的问题我似乎很抱怨,我仍然相信我的旧答案澄清了。无论如何,让我照顾你。 :)
首先:我发现你无法真正从第一页进入“上一页”页面。理想情况下,我应该。所以,这是我提交的您可能想要关注的错误:https://developers.facebook.com/bugs/391562790938294?browse=search_50fcac3ce094e7068176315
第二次:如果这是设计的,你不能从第一页回到“上一页”(因为 之前没有),但你肯定可以去到“下一步”。但是,由于API表现为游标,并且您已向前移动,现在您的“上一页”将起作用。
问题的答案:
我在上一页获得了一个URL,但我不知道如何从该URL进行javascript FB.api调用。有什么想法吗?
是的,你可以拨打FB.api电话。但我建议你改为进行HTTP GET调用,因为它更容易。另请注意,之前可能会返回并清空{"data":[]}
之类的数组
如何获取上一页/下一页?
在这里,我正在编写一个使用jQuery的小代码。如果您不想阅读代码,有两种方法:
FB.api
。我使用jQuery BBQ pluging进行解析。重要说明:在示例中,我使用的是“下一个”网址,因为在第一次请求时,如果我使用“上一个”,则会提供空的JSON,而不是过去提供的帖子。但是,一旦我向前移动几页,我就可以使用“之前的”URL。与Google搜索结果一样,您无法在第1页上转到上一页,但您可以从任何页面> 1(参见下面的实施例3)。这称为分页。
示例1:使用HTTP GET的代码(首选):(我将加载3个帖子/页面并查看3个下一页)
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script type="text/javascript" src="http://connect.facebook.net/en_US/all.js"></script>
<script type="text/javascript" src="https://raw.github.com/cowboy/jquery-bbq/master/jquery.ba-bbq.min.js"></script>
<script>
var i =0;
var getPosts = function (response){
for (element in response.data){
post = response.data[element]
console.log(post.id + ": " +post.message);
}
// can i call FB.api(nextPage, getPosts); ??
if(i < 2){
nextPage = response.paging.next;
console.log(nextPage);
i++;
//Method 1: I use it.
$.get(nextPage, getPosts, "json"); //optional: $.getJSON can be use instead
}
}
$(document).ready(function(){
$('#loadPosts').bind('click', function() {
FB.api('/me/home',{since:'yesterday','limit': '3'}, getPosts);
});
})
</script>
</head>
<body>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
// init the FB JS SDK
FB.init({
appId : 'XXXXXXXXXXXX', // FILL YOUR APP ID HERE!
status : true, // check the login status upon init?
cookie : true, // set sessions cookies to allow your server to access the session?
});
// Additional initialization code such as adding Event Listeners goes here
};
</script>
<button id="loadPosts">Load Posts</button>
<p>Please open developer console to see what's happening. In Firefox, you can use ctrl+shift+k, and in Chrome/Chromium use ctrl+shift+i</p>
</body>
</html>
响应:
100004192352945_156620584487686: undefined
137723270230_10152423499430231: On this day, please spare a thought for those fellow citizens, for whom I just spare a thought and do nothing else.
642965867_10151211036740868: Thanks everyone for their wishes! The wishes made my day!
https://graph.facebook.com/677811901/home?limit=3&access_token=AAACYjXGS5FQBAIR3brc2LibjBcZCi2kRJUybG8VMaaJSZARQ8SzNE7BE4PBrDIFVZB0AaVEa1dZCpX1fhCvoD2rnq8uc8OGaIFhO9uvVXAZDZD&until=1359184568
367116489976035_536776529676696: Rage. Quit. Life.
899605553_10152450871820554: undefined
367116489976035_417820828298092: undefined
https://graph.facebook.com/677811901/home?limit=3&access_token=AAACYjXGS5FQBAIR3brc2LibjBcZCi2kRJUybG8VMaaJSZARQ8SzNE7BE4PBrDIFVZB0AaVEa1dZCpX1fhCvoD2rnq8uc8OGaIFhO9uvVXAZDZD&until=1359179890
137723270230_10152423148745231: Pratibha Patil used to love the Republic Day Parade, especially the part where the visiting Chief Guest extended her an invitation to visit his/her own country.
137723270230_10152423131700231: The Kingfisher tableau at Republic Day Parade was so simple. Vijay Mallya riding a bicycle.
367116489976035_484460034950769: undefined
示例2:使用FB.api的代码:(我将加载3个帖子/页面并查看3个下一页)
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script type="text/javascript" src="http://connect.facebook.net/en_US/all.js"></script>
<script type="text/javascript" src="https://raw.github.com/cowboy/jquery-bbq/master/jquery.ba-bbq.min.js"></script>
<script>
var i =0;
var getPosts = function (response){
for (element in response.data){
post = response.data[element]
console.log(post.id + ": " +post.message);
}
// can i call FB.api(nextPage, getPosts); ??
if(i < 2){
nextPage = response.paging.next;
console.log(nextPage);
i++;
//Method 2: If you have to call FB.api
var params = jQuery.deparam.querystring(nextPage);
console.log(JSON.stringify(params, null, 2));
FB.api('/me/home', params, getPosts)
}
}
$(document).ready(function(){
$('#loadPosts').bind('click', function() {
FB.api('/me/home',{since:'yesterday','limit': '3'}, getPosts);
});
})
</script>
</head>
<body>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
// init the FB JS SDK
FB.init({
appId : 'XXXXXXXXXXXX', // FILL YOUR APP ID HERE!
status : true, // check the login status upon init?
cookie : true, // set sessions cookies to allow your server to access the session?
});
// Additional initialization code such as adding Event Listeners goes here
};
</script>
<button id="loadPosts">Load Posts</button>
<p>Please open developer console to see what's happening. In Firefox, you can use ctrl+shift+k, and in Chrome/Chromium use ctrl+shift+i</p>
</body>
</html>
响应:
367116489976035_536776529676696: Rage. Quit. Life.
899605553_10152450871820554: undefined
367116489976035_417820828298092: undefined
{
"limit": "3",
"access_token": "AAACYjXGS5FQBAIR3brc2LibjBcZCi2kRJUybG8VMaaJSZARQ8SzNE7BE4PBrDIFVZB0AaVEa1dZCpX1fhCvoD2rnq8uc8OGaIFhO9uvVXAZDZD",
"until": "1359179890"
}
137723270230_10152423148745231: Pratibha Patil used to love the Republic Day Parade, especially the part where the visiting Chief Guest extended her an invitation to visit his/her own country.
137723270230_10152423131700231: The Kingfisher tableau at Republic Day Parade was so simple. Vijay Mallya riding a bicycle.
367116489976035_484460034950769: undefined
https://graph.facebook.com/677811901/home?limit=3&access_token=AAACYjXGS5FQBAIR3brc2LibjBcZCi2kRJUybG8VMaaJSZARQ8SzNE7BE4PBrDIFVZB0AaVEa1dZCpX1fhCvoD2rnq8uc8OGaIFhO9uvVXAZDZD&until=1359178140
{
"limit": "3",
"access_token": "AAACYjXGS5FQBAIR3brc2LibjBcZCi2kRJUybG8VMaaJSZARQ8SzNE7BE4PBrDIFVZB0AaVEa1dZCpX1fhCvoD2rnq8uc8OGaIFhO9uvVXAZDZD",
"until": "1359178140"
}
655515199_403590309726450: a good resolution to take on Republic Day
505588854_496901583686790: Love the secret world that slow motion reveals.
693811975_10151217837201976: undefined
示例3:执行:page1 - &gt;第2页 - &gt;第1页或第 - 页 - &gt;下一个 - &gt;上一页以下代码将加载page1,然后转到“下一页”(第2页),然后返回第1页,使用“上一页”
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
<script type="text/javascript" src="http://connect.facebook.net/en_US/all.js"></script>
<script type="text/javascript" src="https://raw.github.com/cowboy/jquery-bbq/master/jquery.ba-bbq.min.js"></script>
<script>
var i =0;
var getPosts = function (response){
for (element in response.data){
post = response.data[element]
console.log(post.id + ": " +post.message);
}
// can i call FB.api(nextPage, getPosts); ??
if(i < 2){
nextPage = response.paging.next;
if(i==1)
nextPage = response.paging.previous;
console.log(nextPage);
i++;
$.get(nextPage, getPosts, "json"); //optional: $.getJSON can be use instead
}
}
$(document).ready(function(){
$('#loadPosts').bind('click', function() {
FB.api('/me/home',{since:'yesterday','limit': '3'}, getPosts);
});
})
</script>
</head>
<body>
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
// init the FB JS SDK
FB.init({
appId : 'XXXXXXXXXXXX', // FILL YOUR APP ID HERE!
status : true, // check the login status upon init?
cookie : true, // set sessions cookies to allow your server to access the session?
});
// Additional initialization code such as adding Event Listeners goes here
};
</script>
<button id="loadPosts">Load Posts</button>
<p>Please open developer console to see what's happening. In Firefox, you can use ctrl+shift+k, and in Chrome/Chromium use ctrl+shift+i</p>
</body>
</html>
响应:
PAGE1:
367116489976035_536806916340324: How big is the Solar System?
Full infographic here: http://bit.ly/WmzfVn
137723270230_10152423534790231: "Sociologist" Ashis Nandy has claimed that most of the corrupt came from OBC/SC/ST castes.
Following this, Corrupt people have strongly condemned Nandy's attempts to divide them on caste lines. They'll be united in loot, forever.
100004192352945_156620584487686: undefined
PAGE2:
https://graph.facebook.com/677811901/home?limit=3&access_token=AAACYjXGS5FQBAKqIMyCVYjH9upK4e2bjUwLoVbbFDL0ffc0SZBTVR9MUFGV4ZCq6HBdFIadFMpLDC3ATMZCJ4GPsXWpG4qTGODavuvzLAZDZD&until=1359185659
137723270230_10152423499430231: On this day, please spare a thought for those fellow citizens, for whom I just spare a thought and do nothing else.
642965867_10151211036740868: Thanks everyone for their wishes! The wishes made my day!
367116489976035_536776529676696: Rage. Quit. Life.
PAGE1:
https://graph.facebook.com/677811901/home?limit=3&access_token=AAACYjXGS5FQBAKqIMyCVYjH9upK4e2bjUwLoVbbFDL0ffc0SZBTVR9MUFGV4ZCq6HBdFIadFMpLDC3ATMZCJ4GPsXWpG4qTGODavuvzLAZDZD&since=1359185123&__previous=1
367116489976035_536806916340324: How big is the Solar System?
Full infographic here: http://bit.ly/WmzfVn
137723270230_10152423534790231: "Sociologist" Ashis Nandy has claimed that most of the corrupt came from OBC/SC/ST castes.
Following this, Corrupt people have strongly condemned Nandy's attempts to divide them on caste lines. They'll be united in loot, forever.
100004192352945_156620584487686: undefined
OLD ANSWER
使用limit
,offset
,since
和until
参数来实现您的目标。
参考:http://developers.facebook.com/docs/reference/api/
<强>寻呼强>
查询连接时,有几个有用的参数可用于过滤和翻页连接数据:
- limit,offset:https://graph.facebook.com/me/likes?limit=3
- 直到,因为(一个unix时间戳或strtotime接受的任何日期):https://graph.facebook.com/search?until=yesterday&q=orange
以下内容应该从last week
收到yesterday
之后的所有帖子21st - 30th
消息(基本上,每页10封邮件的第三页分页)。
FB.api(
'/me/home',
{
'since':'last week',
'limit': '10',
'offset': '20',
'until': 'yesterday'
},
getPosts
);
我刚刚测试过,它有效。我使用limit = 4,这是页面大小的东西。因此,当我从2011年2月2日(Unix时间戳:1296626400)获取数据到今天使用此
https://graph.facebook.com/me/home?access_token=[AUTH_TOKEN]&since=1296626400&limit=4
它返回数据,并且还返回URL以转到下一页
{
"data": [
<ARRAY OF POSTS HERE>
],
"paging": {
"previous": "https://graph.facebook.com/me/home?access_token=[NEW_AUTH_TOKEN]&since=1298026753&limit=4",
"next": "https://graph.facebook.com/me/home?access_token=[NEW_AUTH_TOKEN]&limit=4&until=1298023222"
}
}
您可以安全地使用JSON对象的previous
和next
属性跳转到下一页(或上一页)。这似乎是最简单的方法。
顺便说一下,\u00257C
需要转换为|
才能使其发挥作用。
答案 1 :(得分:7)
如果您只是想获取下一页(使用paging.next对象),您可以执行jQuery.getJSON请求。如下所示:
function loadAlbums(){
FB.api('/me/albums', function(response){
handleAlbumsResponse(response);
});
}
function handleAlbumsResponse(response){
var albums = response.data;
for( var i in albums){
var album = albums[i];
$('#albums ul').append('<li><a href="#">' + album.name + '</a></li>');
}
if( response.paging.next){
console.log('fetching next page...');
$.getJSON(response.paging.next, function(response){
handleAlbumsResponse(response);
});
}
}
答案 2 :(得分:3)
您问题中的关键约束是我们无法使用响应中提供的“下一个”网址。
我会首先回答一个更为笼统的问题,试着回答你的问题:
我们如何为我们的Facebook应用创建用户体验,其中每次调用更多商品都会返回相同数量的商品。
如果用户请求'more'并获得10个项目,请按'more'然后获得4,然后7等,她可能会认为我们的应用程序有问题。
在Open Graph intro page上,引入了不同的分页参数。这些是:
限制
偏移
,直到
因为
如'paging'标题下所述。但是,如果我们实现一个带限制和偏移的解决方案,我们增加偏移量,例如:
https://graph.facebook.com/me/home?limit=10&offset=OFFSET
其中OFFSET将增加每个请求的限制,我们发现返回的结果数有时不等于我们指定的“limit”参数。这是因为在检查查询结果是否对查看者可见之前,参数将应用于Facebook的侧。我们要求10,但我们可能会收到8件物品。
这意味着如果我们希望我们的应用“更多”请求始终返回相同数量的项目,我们就无法使用我们增加限制和抵消的解决方案。
Jeff Bowen(在Facebook平台团队工作)在此blog中提出的解决方案就是这样的逻辑:
这是一个代码示例,基于上面提到的博客文章中的示例:
var graphURL = "https://graph.facebook.com/me/home?" +
"callback=processResult&" +
"date_format=U&" +
"limit=10";
function loadPosts() {
var script = document.createElement("script");
script.src = graphURL;
document.body.appendChild(script);
}
function processResult(posts) {
if (posts.data.length == 0) {
document.getElementById("loadMore").innerHTML =
"No more results";
}
else {
graphURL = graphURL + "&until=" +
posts.data[posts.data.length-1].created_time;
for (var post in posts.data) {
var message = document.createElement("div");
message.innerHTML = posts.data[post].message;
document.getElementById("content").appendChild(message);
}
}
}
此解决方案按时间顺序从用户的新闻源中检索接下来的10个项目,而不使用JSON响应中的URL。
答案 3 :(得分:0)
它正在运作
function friends_list()
{
for (var x = 0; x<500; x++)
{
FB.api(
'/me/friendlists/',
'GET',
{"fields":"id","offset":x},
function(response) {
for (i = 0; i < response.data.length; i++)
{
document.getElementById("friends_list").innerHTML =
document.getElementById("friends_list").innerHTML + "<br>" + response.data[i].id;
}
document.getElementById("friends_list").innerHTML =
document.getElementById("friends_list").innerHTML + "<br>" ;
}
);
}
}
答案 4 :(得分:0)
我注意到问题很严重。这些天我的回答是正确的FB jsSDK(2017):)
实际上它比前面描述的更简单并且有点直观。 FB jsSDK它本身就是一个API,它可以通过自身和使用相同的方式浏览响应的页面,不是吗?
function getPosts(){
FB.api('/me/posts', 'GET', {limit:250}, cbGetPosts);
}
function cbGetPosts(response){
// do your stuff with response.data
if(response && response.paging){
FB.api(response.paging.next, cbGetPosts); // yep, is this simple
}
}
显然,只要定义了下一个键,但是这将要求下一页,但是证明了这个概念。