jsonp获取服务器的数据的方式
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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.htmlhttp://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"}]}
