我回到这里遇到这个问题： 我有一个API页面，我可以根据请求获取子数据文件。
所以我创建了一个js文件，它通过yql获取跨域json并将json数据解码为一个字符串，我将其传递给php，插入到MySql数据库并返回到表中。
所以我知道我可以用这样的网址查询API .... / usd-gold.json我得到有关美元和黄金之间交换的信息，但如果我想得到相反的改变我应该询问。 ... /金usd.json。
这是最后的问题。 如何获取多个json询问以获取json数据，解码它，组合数据并将其发送到php。 换句话说：我如何进行多重审讯，如idr-gold.json，gold-dir.json，usd-gold.json，gold-use.json等所有货币，组合代码，传递给php并研究mysql。
这是我使用的代码，用于一个查询。
JS代码/文件：
// JavaScript Document
$(document).ready(function(){
var container = $('#target');
$('.ajaxtrigger').click(function(){
doAjax($(this).attr('href'));
return false;
});
function doAjax(url){
// if it is an external URI
if(url.match('^http')){
// call YQL
// TEST
$.getJSON("http://query.yahooapis.com/v1/public/yql?"+
"q=select%20*%20from%20html%20where%20url%3D%22"+
encodeURIComponent(url)+
"%22&format=json'&callback=?", // QUESTO è URL cui segue la "," e poi function(data)
// this function gets the data from the successful
// JSON-P call
function(data){
// if there is data, filter it and render it out
if(data.results[0]){
var data = filterData(data.results[0]);
container.html(data);
// alert(data); // MIO TEST
document.getElementById("prova1").value = data; //MIO
// TEST
var obj = $.parseJSON(data);
document.getElementById("provabis").innerHTML = obj.buy.currency+"/"+obj.sell.currency+" "+obj.offer[0].rate+" "+obj.offer[0].amount+" "+obj.offer[0].seller.name;
// alert(obj.sell.currency);
// TEST END
// otherwise tell the world that something went wrong
} else {
var errormsg = "<p>Error: can't load the page.</p>";
container.html(errormsg);
}
}
);
// if it is not an external URI, use Ajax load()
} else {
$('#target').load(url);
}
}
// filter out some nasties
function filterData(data){
data = data.replace(/<body>/,'');
data = data.replace(/<?\/body[^>]*>/g,'');
data = data.replace(/[\r|\n]+/g,'');
data = data.replace(/<--[\S\s]*?-->/g,'');
data = data.replace(/<noscript[^>]*>[\S\s]*?<\/noscript>/g,'');
data = data.replace(/<script[^>]*>[\S\s]*?<\/script>/g,'');
data = data.replace(/<script.*\/>/,'');
return data;
}
});
这里是html代码/文件：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> </meta>
<title>
Under Developement
</title>
<link type="text/css" href="styles.css" rel="stylesheet"></link>
</head>
<body>
<div id="doc" class="yui-t7">
<div id="hd" role="banner">
<h1>
Ajax with jQuery - using YQL
</h1>
</div>
<div id="bd" role="main">
<h2>
Demo
</h2>
<ul>
<li>
<a class="ajaxtrigger" href="ajaxcontent.html">
Load Ajax Content
</a>
</li>
<li>
<a class="ajaxtrigger" href="http://www.API LINK.json">
<!-- <a class="ajaxtrigger" href="http://www.API LINK.json
</a><br>
<a class="ajaxtrigger" href="http://www.API LINK.json">
<!-- <a class="ajaxtrigger" href="http://www.API LINK.json"> -->
Get cspro2.json
</a>
</li>
</ul>
<div id="target">
</div>
<h2>
Formatted List
</h2>
</div>
<div id="prova2">
</div>
<h2>
TEST
</h2>
</div>
<form action="jsontodb10.php" method="post">
Json code: <br>
<textarea id="prova1" style="width:40%;height:40em;" name="jsonCode"> </textarea>
<!-- metti qui il pulsante per submittare al php -->
<br>
<input type="submit">
</form>
<textarea id="provabis" style="width:40%;height:40em;"></textarea>
<script src="http://code.jquery.com/jquery-latest.pack.js"> </script>
<script src="code.js"></script>
<script src="using-yql7.js"></script>
</div>
</body>
</html>
最后是php代码/文件：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<link href="table-db.css" rel="stylesheet" type="text/css">
<title>Database show</title>
</head>
<body>
<?php
//inserisci il reset della variabile che non manda in loop il force update
$submitVerify = $_POST["_Submit"];
if($submitVerify=="force Update"){
// unset($submitVerify);
echo ("<script type='text/javascript'>location.reload();</script>");
};
//connect to mysql db
$servername = "localhost";
$username = "my user";
$password = "";
$dbname = "my db";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully <br />";
// QUI METTIAMO la verifica circa il RecordTime ed il TimeNow (così che non si registrino più di 1 Record/ 2 hour)
$timeNow = date('Y-m-d H:i:s'); // ora adesso
$time = strtotime($timeNow); // settato l'ora adesso
$timeRange = date('Y-m-d H:i:s',strtotime('-2 hours', $time)); // l'ora adesso -2 ore
$sqlsearchTime = "SELECT DateTimeSave FROM Valuta ORDER BY ID DESC LIMIT 1";
$searchresultTime = mysqli_query($conn, $sqlsearchTime);
if (mysqli_num_rows($searchresultTime) > 0) {
// output data of each row
while($row = mysqli_fetch_assoc($searchresultTime)) {
echo "\n Last record in database was at: " . $row["DateTimeSave"]. "<br>";
if ($row["DateTimeSave"] > $timeRange) // se l'orario estratto dal database è < dell'orario attuale -2 ore
{
echo('hey sono passate meno di due ore, non inserirò un altro dato a meno che tu non mi forzi <br />'); // allora apri il database ed inserisci l'ultimo dato ottenuto e mostra il contenuto del database
// goto showData;
goto insertData;
}
else // se l'orario è maggiore
{
echo('si che possiamo mettere questo nuovo dato nel database <br />'); // allora mostra solo il contenuto e rimanda a al tasto che forza l'estrazione del dato e l'inserimento dei dati ne db e mostra contenuto
goto insertData;
};
}
} else {
echo "0 results";
};
// NOME funzione
insertData:
//VALUES from JSON
//read the json file contents
//$jsondata = file_get_contents('idr-gold.json');
//$jsondata = file_get_contents('idr-gold.txt');
//convert json object to php associative array
//$data = json_decode($jsondata, true);
//get the value details
$content = $_POST["jsonCode"];
//$jsondata = file_get_contents('idr-gold.txt');
//$json = json_decode($content, true);
//convert json object to php associative array
$data = json_decode($content, true);
$buycurrency = $data['buy']['currency'];
$sellcurrency = $data['sell']['currency'];
$sellrate = $data['offer'][0]['rate'];
$sellamount = $data['offer'][0]['amount'];
$sellername = $data['offer'][0]['seller']['name'];
$offer = $data['offer'];
//se l'offerta nulla metti "no record"
if($offer === NULL)
{
$sellrate = 'No Record';
$sellamount = 'No Record';
$sellername = 'No Record';
};
//VALUES RECORDSNORECORDS (OK) questo setta se c'è o meno un Record
if($sellername != NULL)
{
$recordsNoRecords = TRUE;
} else {
$recordsNoRecords = FALSE;
};
//VALUES DATE&HOUR (OK) qui setta l'ora dell'inserimento e poi inserisce i dati
date_default_timezone_set('UTC+1');
$timestamp = date('Y-m-d H:i:s');
$sqlinsert = "INSERT INTO Valuta (BuyCurrency,SellCurrency,SellRate,SellAmount,SellerName,LinktoPage,Records NoRecords,DateTimeSave)
VALUES ('$buycurrency','$sellcurrency','$sellrate','$sellamount','$sellername','test','$recordsNoRecords','$timestamp')";
if ($conn->query($sqlinsert) === TRUE) {
echo "New record created successfully <br />";
} else {
echo "Error: " . $sqlinsert . "<br>" . $conn->error;
} goto showData;
// NOME funzione
showData:
// QUERY X VEDERE
$sqlsearch = "SELECT BuyCurrency, SellCurrency, SellRate, SellAmount, SellerName, LinktoPage, DateTimeSave FROM Valuta";
$searchresult = mysqli_query($conn, $sqlsearch);
if (mysqli_num_rows($searchresult) > 0) {
// output data of each row
while($row = mysqli_fetch_assoc($searchresult)) {
echo "\n Currency to buy: " . $row["BuyCurrency"]. " - Currency to sell: " . $row["SellCurrency"]. " - Sell Rate " . $row["SellRate"]. " - Amount on sale: " . $row["SellAmount"]. " - Seller Name: " . $row["SellerName"]. " - Lik to page: " . $row["LinktoPage"]. " - Date & Time of record: " . $row["DateTimeSave"]. "<br>";
}
} else {
echo "0 results";
};
$conn->close();
?>
<!-- bottone per forzare l'aggiornamento -->
<form name="update" action="" method="post">
se vuoi forza
<input type="submit" name="_Submit" value="force Update">
</form>
<?php
$submit = $_POST["_Submit"];
if($submit=="force Update"){
echo ("facciamolo!");
// goto insertData;
}else{
echo ("SUCA!!");
// goto showData;
};
?>
<br />
<br />
<br />
<br />
<?php
// TABELLA
//connect to mysql db
$servername = "localhost";
$username = "";
$password = "";
$dbname = "my db";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully <br />";
$sql = "SELECT BuyCurrency,SellCurrency,SellRate,SellAmount,SellerName,LinktoPage,DateTime Save FROM Valuta ORDER BY ID DESC LIMIT 1";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
echo '<table cellpadding="0" cellspacing="0" class="db-table">';
echo '<tr><th>Buy</th><th>Sell</th><th>Rate</th><th>Amount</th> <th>Seller</th><th>Link</th><th>Time Record</th></tr>';
// output data of each row
while($row = $result->fetch_assoc()) {
echo "<tr><td>".$row["BuyCurrency"]."</td> <td>".$row["SellCurrency"]."</td><td>".$row["SellRate"]."</td> <td>".$row["SellAmount"]."</td><td>".$row["SellerName"]."</td> <td>".$row["LinktoPage"]."</td><td>".$row["DateTimeSave"]."</td></tr>";
}
echo "</table>";
} else {
echo "0 results";
};
$conn->close();
?>
</body>
</html>
提前求助！
UPDATE脚本
脚本的一个部分是有一个网站，我可以从一个返回json或xml的api中显示检索到的数据。
所以我尝试了在我看来最容易检索json数据的方法（如果我理解的话，xml会更难）。我发现使用json文件很容易获得YQL的跨域数据。
我读到的是，json回答，当你试图同时访问不同的文件时，可能有传输速率限制，我检查实时的json数据大约1/2秒给出答案。
所以这就是我的想法。 我创建了一个js表单，创建了api答案的url，我将数据抛出YQL，将该代码发送到php并将其插入到db中。因此，尽管必须等待站点实时获取所有数据，用户才能获取带有已保存数据的mysql表。
对我来说，最佳目标是： 1）有一个db，每4小时从api获得json; 2）更新保存的数据; 3）当用户打开页面可以实时查询db或强制json数据检索时（更新db）。
那是最后的一部分。 感谢你的时间。