- jsonp获取服务器的数据,有两种
- 一,跨域
- 二,不跨域
- 如果跨域
- js的写法有两种
- 1,
- <scripttype="text/javascript">
- $(function(){
- $.getJSON('http://localhost:8090/search?jsoncallback=?',
- function(json){
- alert(json);
- varhtml="";
- for(varkeyinjson.data){
- html=html+"<imgsrc='http://localhost:8090/img/99999/o/"+json.data[key].filename+"'><br>";
- html=html+"名称:"+json.data[key].filename+"<br>";
- html=html+"category:"+json.data[key].category+"<br>";
- html=html+"height:"+json.data[key].height+"<br>";
- html=html+"width:"+json.data[key].width+"<br>";
- html=html+"length:"+json.data[key].length+"<br>";
- html=html+"<hr>";
- }
- $('#imageList').html(html);
- }
- );
- });
- </script>
- get的ur后面有jsoncallback=?
- 这时候,要在服务器端增加如下代码
- hr.getParameter("jsoncallback")+"({jsonp数据的格式})"
- 例子
- jQuery1510062266528242707175_1324369820794({"data":[{"category":"all","height":"194","_id":"4ebce7b5523e7e91029f910a","keyword":"","width":"259","chunkSize":"262144","length":"9082","md5":"534a94756fc98a6db0483ee702297a82","filename":"img001_images_029.jpeg","contentType":"null","uploadDate":"FriNov1118:15:33JST2011","aliases":"null"},{"category":"all","_id":"4ebce7b5523e7e91029f9108","length":"10987","md5":"7b85b894132f78b2b90cd3fef27317a6","filename":"img001_images_028.jpeg","aliases":"null"}]});
- 注意,是如下格式jQuery1510062266528242707175_1324369820794({xxxx}),要加个()的哦。
- 2,get的ur后面有jsoncallback=?的写法可以改为get的ur后面有jsoncallback=getdata
- 同时function(json)前要加上getdata=
- 具体如下
- <scripttype="text/javascript">
- $(function(){
- $.getJSON('http://localhost:8090/search?jsoncallback=getdata',
- getdata=function(json){
- alert(json);
- varhtml="";
- for(varkeyinjson.data){
- html=html+"<imgsrc='http://localhost:8090/img/99999/o/"+json.data[key].filename+"'><br>";
- html=html+"名称:"+json.data[key].filename+"<br>";
- html=html+"category:"+json.data[key].category+"<br>";
- html=html+"height:"+json.data[key].height+"<br>";
- html=html+"width:"+json.data[key].width+"<br>";
- html=html+"length:"+json.data[key].length+"<br>";
- html=html+"<hr>";
- $('#imageList').html(html);
- );
- });
- </script>
- 这个时候,服务器端就不需要加上hr.getParameter("jsoncallback")了,直接返回json格式就行了。
- 具体参见
- http://www.cnblogs.com/5201314/archive/2009/06/23/1509552.html
- http://51mst.iteye.com/blog/1170798
- 二,如果是不跨域的,
- 不需要加上jsoncallback,直接如下就行了,同时服务器返回的格式,就是纯jsonp的格式。
- $.getJSON('http://localhost:8090/search',85); line-height:18px"> alert(1);
- 服务器返回代码
- {"data":[{"category":"all","aliases":"null"}]}