AJAX使用post發(fā)送數(shù)據(jù)xml格式接受數(shù)據(jù),需要的朋友可以參考一下
注意點:
1. 用POST發(fā)送數(shù)據(jù),在2號線函數(shù)(也是ajax發(fā)送數(shù)據(jù)的函數(shù):ajaxCall)必須加上一句:xmlObject.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
接著使用xmlObject.send(data);發(fā)送
2.3號線函數(shù)要注意:
1.禁用緩存(建議,不必要):header("Cache-Control:no-cache");
2.使用XML數(shù)據(jù)格式必須加上:header("Content-Type: text/xml; charset=gb2312");//這里要寫XML
3.若使用WAMP5集成環(huán)境安裝的MYSQL,在查詢數(shù)據(jù)庫時候,必須加上:
$charset = "gb2312";
mysql_query("SET character_set_connection=$charset, character_set_results=$charset, character_set_client=binary"); //這句是必須的,解決中文亂碼加密問題s
否則就會亂碼加密,今天我就是在這里浪費了很久時間,我是用ECSHOP GBK版 默認安裝的數(shù)據(jù)庫
4.若用XML接受數(shù)據(jù),回調(diào)函數(shù)必須分IE和非IE處理,否則總是有一方娶不到XML數(shù)據(jù)
處理代碼如下:
function getXMLData(tagName)//獲取XML數(shù)據(jù),分IE和非IE處理 { var info; if(window.ActiveXObject) //IE取回XML文件方法 { var doc = new ActiveXObject("MSxml2.DOMDocument"); doc.loadXML(xmlObject.responseText); info = doc.getElementsByTagName(tagName); } else //---------------------------非IE取回XML文件方法 { info = xmlObject.responseXML.getElementsByTagName(tagName); } return info; }
下面就是我做的一個省市聯(lián)動測試
代碼如下:
index.php <!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=gb2312" /> <title>省事聯(lián)動測試</title> <style type="text/css" > select{ width:100px; } </style> <script type="text/javascript" > var thisId = ""; //當前操作的selectI的D var xmlObject; //ajax 對象全局變量, function getAjaxObject()//AJAX 1號線,返回一個AJAX 對象引擎 { var xmlObject ; if(window.ActiveXObject) { xmlObject = new ActiveXObject("Microsoft.XMLHTTP"); } else { xmlObject = new XMLHttpRequest(); } return xmlObject ; } function ajaxCall(id) //ajax 二號線 ,這里采用 post 傳遞參數(shù) { xmlObject = new getAjaxObject(); if(xmlObject) { var url = "chuli.php"; var data = "id=" + id; xmlObject.open("post",url,true); xmlObject.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); xmlObject.onreadystatechange = repayFuncion; xmlObject.send(data); } } function repayFuncion() //ajax 四號線 ,這里采用 xml 接受數(shù)據(jù),這里還涉及到xmldom編程 { if(xmlObject.readyState==4 && xmlObject.status==200) { var info = getXMLData("res");//獲取XML數(shù)據(jù) $(thisId).length = 0;//清楚select 中的option節(jié)點 for(i=0;i<info.length;i++) { var optionId = info[i].childNodes[0].childNodes[0].nodeValue; var optionValue = info[i].childNodes[1].childNodes[0].nodeValue; var optionNode = document.createElement('option'); optionNode.value = optionId; optionNode.innerText =optionValue; $(thisId).appendChild(optionNode); } } } function getXMLData(tagName)//獲取XML數(shù)據(jù),分IE和非IE處理 { var info; if(window.ActiveXObject) //IE取回XML文件方法 { var doc = new ActiveXObject("MSxml2.DOMDocument"); doc.loadXML(xmlObject.responseText); info = doc.getElementsByTagName(tagName); } else //---------------------------非IE取回XML文件方法 { info = xmlObject.responseXML.getElementsByTagName(tagName); } return info; } function $(id)//常用函數(shù),通過ID取對象 { return document.getElementById(id); } function getProvice()//獲取省 { thisId = "Province"; var id = '1'; ajaxCall(id); } function getCity()//獲取市 { thisId = "City"; $("County").length = 0; var id = $("Province").value; ajaxCall(id); } function getCounty()//獲取縣城 { thisId = "County"; var id = $("City").value; if($("City").length) { ajaxCall(id); } } window.onlaod = getProvice();//頁面開始載入省 </script> </head> <body> <form action="javascript:void(0)" method="post"> <label for="username" >用戶名:</label> <input type="text" name="username" id="username" width="60px" /><br /> <label for="psd" >密 碼:</label> <input type="password" name="psd" id="psd" width="80px" /></br> <label for="psd" >地 址:</label> <select id="Province" onclick="getCity()"> </select> <select id="City" onclick="getCounty()" > </select> <select id="County" name="xian" > </select> <input type="submit" value="提交" /> </form> </body> </html>
chuli.php <?php//3號線header("Cache-Control:no-cache"); header("Content-Type: text/xml; charset=gb2312");//這里要寫XML require("function.php"); $id = $_POST['id']; file_put_contents("my1.txt",$act . "------" . $ziduan); $result = getresultById($id); $info = "<mes>"; foreach($result as $row){$info .= "<res>"; $info .= "<id>" . $row['region_id'] . "</id>"; $info .= "<name>" . $row['region_name'] . "</name>"; $info .= "</res>";} $info .= "</mes>"; echo $info; ?>
3.數(shù)據(jù)庫函數(shù)
function.php <?php function getresultById($id) { $con = mysql_connect("localhost","root",""); if($con) { $charset = "gb2312"; mysql_query("SET character_set_connection=$charset, character_set_results=$charset, character_set_client=binary"); //這句是必須的,解決中文亂碼加密問題s mysql_select_db("ajax",$con); $sql = "select * from ecs_region where parent_id = '$id'"; $res = mysql_query($sql); $arr = array(); while($row = mysql_fetch_assoc($res)) { $arr[] = $row; } return $arr; } return false; }
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