我想将页面上的一些数据发送到servlet
所以我写了下面的jQuery来做到这一点
我使用所有数据构建一个json字符串,并将其直接发送到servlet
但是我不知道如何从servlet中的ajax获取全部数据
$("#save").click ( function() { $.ajax ( { url:'/WebApplication1/Controller', data:'{"name":"abc","address":"cde"}', type:'post', cache:false, success:function(data){alert(data);}, error:function(){alert('error');} } ); } );
如果查看来自chrome的请求标头的Form Data段
您会看到整个json字符串是关键。
Request URL:http://192.168.0.13/WebApplication1/Controller Request Method:POST Status Code:404 Not Found Request Headersview source Accept:*/* Accept-Charset:Big5,utf-8;q=0.7,*;q=0.3 Accept-Encoding:gzip,deflate,sdch Accept-Language:zh-TW,zh;q=0.8,en-US;q=0.6,en;q=0.4 Connection:keep-alive Content-Length:112 Content-Type:application/x-www-form-urlencoded Host:192.168.0.13 Origin:http://192.168.0.13 Referer:http://192.168.0.13/system_admin/building.html User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.910.0 Safari/535.7 X-Requested-With:XMLHttpRequest Form Dataview URL encoded {"name":"abc","address":"cde"}: Response Headersview source Accept-Ranges:bytes Connection:Keep-Alive Content-Language:en Content-Type:text/html; charset=iso-8859-1 Date:Wed, 15 Feb 2012 12:37:24 GMT Keep-Alive:timeout=5, max=100 Server:Apache/2.2.14 (Win32) DAV/2 mod_ssl/2.2.14 OpenSSL/0.9.8l mod_autoindex_color PHP/5.3.1 Transfer-Encoding:chunked Vary:accept-language,accept-charset
看这里,
data:'{"name":"abc","address":"cde"}',
您的data归属是错误的。它不应该是字符串,而是真实的JSON对象。删除那些单引号。
data
data:{"name":"abc","address":"cde"},
这样,它就可以在Servlet中以常规方式使用
String name = request.getParameter("name"); // abc String address = request.getParameter("address"); // cde
jQuery.ajax()