jsonp获取服务器数据的方式
- 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,
- <script type="text/javascript">
- $(function() {
- $.getJSON('http://localhost:8090/search?jsoncallback=?' ,
- function(json) {
- alert(json);
- var html = "";
- for (var key in json.data) {
- html = html + "<img src='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" : "Fri Nov 11 18:15:33 JST 2011","aliases" : "null"},{"category" : "all","height" : "194","_id" : "4ebce7b5523e7e91029f9108","keyword" : "","width" : "259","chunkSize" : "262144","length" : "10987","md5" : "7b85b894132f78b2b90cd3fef27317a6","filename" : "img001_images_028.jpeg","contentType" : "null","uploadDate" : "Fri Nov 11 18:15:33 JST 2011","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
- <script type="text/javascript">
- $(function() {
- $.getJSON('http://localhost:8090/search?jsoncallback=getdata' ,
- getdata=function(json) {
- alert(json);
- var html = "";
- for (var key in json.data) {
- html = html + "<img src='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。
- <script type="text/javascript">
- $(function() {
- $.getJSON('http://localhost:8090/search' ,
- function(json) {
- alert(1);
- var html = "";
- for (var key in json.data) {
- html = html + "<img src='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>
- 服务器返回代码
- {"data":[{"category" : "all","height" : "194","_id" : "4ebce7b5523e7e91029f910a","keyword" : "","width" : "259","chunkSize" : "262144","length" : "9082","md5" : "534a94756fc98a6db0483ee702297a82","filename" : "img001_images_029.jpeg","contentType" : "null","uploadDate" : "Fri Nov 11 18:15:33 JST 2011","aliases" : "null"}]}
用我无限的热情燃烧无悔的青春!