<code>$.ajax({ url : "http://apis.baidu.com/apistore/iplookupservice/iplookup?ip="+window.location.href, beforeSend: function(request) { request.setRequestHeader("apikey", "1f5cb934618472891347834b2bf64c8d"); }, type:"GET", dataType : "jsonp", success : function(data){ console.log(data); } }); </code>
js请求数据失败。
php成功,为什么?
<code>$ch = curl_init(); $url = 'http://apis.baidu.com/apistore/iplookupservice/iplookup?ip='.$_SERVER['REMOTE_ADDR']; $header = array( 'apikey:1f5cb934618472891347834b2bf64c8d', ); // 添加apikey到header curl_setopt($ch, CURLOPT_HTTPHEADER , $header); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // 执行HTTP请求 curl_setopt($ch , CURLOPT_URL , $url); $res = curl_exec($ch); $info = json_decode($res); </code>
回复内容:
<code>$.ajax({ url : "http://apis.baidu.com/apistore/iplookupservice/iplookup?ip="+window.location.href, beforeSend: function(request) { request.setRequestHeader("apikey", "1f5cb934618472891347834b2bf64c8d"); }, type:"GET", dataType : "jsonp", success : function(data){ console.log(data); } }); </code>
js请求数据失败。
php成功,为什么?
<code>$ch = curl_init(); $url = 'http://apis.baidu.com/apistore/iplookupservice/iplookup?ip='.$_SERVER['REMOTE_ADDR']; $header = array( 'apikey:1f5cb934618472891347834b2bf64c8d', ); // 添加apikey到header curl_setopt($ch, CURLOPT_HTTPHEADER , $header); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // 执行HTTP请求 curl_setopt($ch , CURLOPT_URL , $url); $res = curl_exec($ch); $info = json_decode($res); </code>
jQuery中type为jsonp的ajax是不允许自定义请求头的,虽然你在beforeSend里面加了自定义的头apikey,但是由于jsonp的实现是通过<script>标签而不是XMLHttpRequest对象,你设置的自定义头是无效的,所以百度返回给你的结果是Missing apikey。<br> 参考:http://www.jquery123.com/jQuery.ajax/ (搜索“愚人码头注”字眼)</script>
建议:在服务器端做个接口,接口中直接访问百度的API,再把结果返回。
服务器返回的数据格式不对,不应该返回json,应该返回这种格式:
callback({你的json数据内容});
此类api不提供ajax查询 必须在http请求头添加一个指定值的apikey
你不是写明了 JSONP
请求么,那么返回的应该是 JavaScript
代码而非 JSON
数据。
问题还是跨域。
php可以,是因为百度服务端请求头里面设置apikey成功了,
javascript不可以,是因为跨域的规则没通过。 具体是,预请求options 从百度返回的http头部值Access-Control-Request-Headers:*,验证没通过,这一项要列出具体的值(比如apikey),不能是通配符。
参考 https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#...

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