AJAX 如何使用json格式传输？

var paras = {};
                paras.name='jack';
                $.ajax({
                    type:'get',
                    url:'/testchart',
                    data:$.toJSON(paras),
                    dataType:'json',
                    contentType: 'application/json;charset=utf-8',
                    success: onDataReceived
                });

　　这样传到后台，直接获取paras =request.GET就能将整个paras获取到，然后使用paras['name']就能得到传过来的name。

var paras = {};
                paras.rows=[];
                var rowstr={};
                rowstr.property =null;
                rowstr.filter =null;
                rowstr.casted_type =null;
                paras.rows.push(rowstr);
                paras.bool_op ='or';
                paras.arb_event ='Add Friend Receive';
                paras.action='by';
                paras.unit='day';
                paras.type='general';
                paras.limit = 40;
                paras.chart_type= 'line';
                paras.chart_keys=['Add Friend Request'];
                paras.from_date = '2012-09-10';
                paras.to_date = '2012-10-10';
                paras.project ='pirates';

                $.ajax({
                    type:'get',
                    url:'/testchart',
                    data:paras,
                    dataType:'json',
                    contentType: 'application/json;charset=utf-8',
                    success: onDataReceived
                });

　　情况有点儿特殊，在paras里传入一个是数组的对象rows, 使用这样的方法在后台打印不出结果。也就是paras['rows']根本不响应。直接打印request.GET，发现结果很诡异：

<QueryDict: {u'project': [u'pirates'], u'rows[0][filter]': [u''], u'chart_keys[]': [u'Add Friend Request'], u'rows[0][property]': [u''], u'rows[0][casted_type]': [u''], u'bool_op': [u'or'], u'from_date': [u'2012-09-10'], u'limit': [u'40'], u'chart_type': [u'line'], u'action': [u'by'], u'type': [u'general'], u'arb_event': [u'Add Friend Receive'], u'unit': [u'day'], u'to_date': [u'2012-10-10']}>

JavaScript代码，巧用JSON传参数function AddComment(content) {    var comment = {};    comment.threadId = $("#span_thread_id").html();    comment.groupId = $("#span_group_id").html();    comment.groupType = $("#span_group_type").html();    comment.title = $("#thread_title").html();    comment.content = content;    $.ajax({        url: '/WebService/GroupService.asmx/AddThreadComment',        data: $.toJSON(comment),        type: 'post',        dataType: 'json',        contentType: 'application/json;charset=utf-8',        cache: false,        success: function(data) {            //根据返回值data.d处理            },        error: function(xhr) {            //中间发生异常，具体查看xhr.responseText        }    });}

$.ajax({

                    type:'get',

                    url:'/testchart',

                    data:$.toJSON(paras),

                    dataType:'json',

                    contentType: 'application/json;charset=utf-8',

                    success: onDataReceived

                });

 

然后打印出来的结果为：

<QueryDict: {u'{"rows":[{"property":null,"filter":null,"casted_type":null}],"bool_op":"or","arb_event":"Add Friend Receive","action":"by","unit":"day","type":"general","limit":40,"chart_type":"line","chart_keys":["Add Friend Request"],"from_date":"2012-09-10","to_date":"2012-10-10","project":"pirates"}': [u'']}>