第一种:jsonp的方式
<?php header(‘Content-type: application/json‘); //获取回调函数名 $jsoncallback = $_GET[‘jsoncallback‘]; //json数据 $json_data = ‘{"data":[{"did":"29","deptName":"\u8f6f\u4ef6\u90e8"}, {"did":"30","deptName":"\u8f6f\u4ef6\u90e8"}, {"did":"31","deptName":"\u6d4b\u8bd5\u90e8"}, {"did":"32","deptName":"\u786c\u4ef6\u90e8"}, {"did":"33","deptName":"\u54c1\u8d28\u90e8"}, {"did":"34","deptName":"\u786c\u4ef6\u90e8"}, {"did":"35","deptName":"\u5236\u9020\u4e2d\u5fc3"}, {"did":"36","deptName":"\u91c7\u8d2d\u90e8"}, {"did":"37","deptName":"\u751f\u4ea7\u90e8"}, {"did":"38","deptName":"\u603b\u7ecf\u529e"}, {"did":"39","deptName":"\u9500\u552e\u90e8"}, {"did":"40","deptName":"\u8d22\u52a1\u90e8"}, {"did":"41","deptName":"\u4f01\u5212\u90e8"}, {"did":"42","deptName":"\u8bbe\u8ba1\u90e8"}, {"did":"43","deptName":"\u4eba\u8d44\u90e8"}, {"did":"44","deptName":"\u884c\u653f\u90e8"}, {"did":"45","deptName":"\u4eba\u4e8b\u90e8"}, {"did":"46","deptName":"\u7ef4\u4fee\u90e8"}, {"did":"47","deptName":"\u4ed3\u50a8\u90e8"}]}‘; //输出jsonp格式的数据 echo $jsoncallback . "(" . $json_data . ")"; ?>
第二种:在后端添加允许跨域的请求头
<?php // 允许 ityangs.net 发起的跨域请求 //header("Access-Control-Allow-Origin: ityangs.net"); // 允许 ityangs.net 发起的跨域请求 header("Access-Control-Allow-Origin: *"); echo ‘{"data":[{"did":"29","deptName":"\u8f6f\u4ef6\u90e8"}, {"did":"30","deptName":"\u8f6f\u4ef6\u90e8"}, {"did":"31","deptName":"\u6d4b\u8bd5\u90e8"}, {"did":"32","deptName":"\u786c\u4ef6\u90e8"}, {"did":"33","deptName":"\u54c1\u8d28\u90e8"}, {"did":"34","deptName":"\u786c\u4ef6\u90e8"}, {"did":"35","deptName":"\u5236\u9020\u4e2d\u5fc3"}, {"did":"36","deptName":"\u91c7\u8d2d\u90e8"}, {"did":"37","deptName":"\u751f\u4ea7\u90e8"}, {"did":"38","deptName":"\u603b\u7ecf\u529e"}, {"did":"39","deptName":"\u9500\u552e\u90e8"}, {"did":"40","deptName":"\u8d22\u52a1\u90e8"}, {"did":"41","deptName":"\u4f01\u5212\u90e8"}, {"did":"42","deptName":"\u8bbe\u8ba1\u90e8"}, {"did":"43","deptName":"\u4eba\u8d44\u90e8"}, {"did":"44","deptName":"\u884c\u653f\u90e8"}, {"did":"45","deptName":"\u4eba\u4e8b\u90e8"}, {"did":"46","deptName":"\u7ef4\u4fee\u90e8"}, {"did":"47","deptName":"\u4ed3\u50a8\u90e8"}]}‘; ?>
第三种:代理请求,由后端去访问要跨域的请求的内容并返回,然后页面访问本地后端
<?php $url=‘http://192.168.192.130/test2.php‘; $html= file_get_contents($url); echo $html; ?>
页面调用方式:
<!DOCTYPE html> <html> <head id="head"> <meta charset="UTF-8"> <title></title> <!--第一种,需要在后端提供写js的回调函数,jsonp方式--> <!--<script> function callbackFunction(result){ alert(result.data[0].deptName); } </script> <script type="text/javascript" src="http://192.168.192.130/test.php?jsoncallback=callbackFunction"></script>--> <!--第二种,在后端添加,允许跨域请求的请求头--> <!--// 允许 ityangs.net 发起的跨域请求 //header("Access-Control-Allow-Origin: ityangs.net"); // 允许 ityangs.net 发起的跨域请求 header("Access-Control-Allow-Origin: *");--> <!--第三种,由后端抓取要跨域的请求的内容,然后页面访问本地后端--> </head> <body> <script> var xmlhttp; if (window.XMLHttpRequest){ // IE7+, Firefox, Chrome, Opera, Safari 浏览器执行的代码 xmlhttp = new XMLHttpRequest(); }else{ //IE6, IE5 浏览器执行的代码 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function(){ if (xmlhttp.readyState==4 && xmlhttp.status==200){ var obj = JSON.parse(xmlhttp.responseText); alert(xmlhttp.responseText); } } //GET方式访问,true为异步,false为异步 xmlhttp.open("GET","http://192.168.192.130/test2.php",false); xmlhttp.send(); </script> </body> </html>
原文地址:https://www.cnblogs.com/makalochen/p/10669586.html
时间: 2024-10-10 20:05:32