//前台 代码
　　 var startDate = $('#startDate').val();
     var endDate = $('#endDate').val();
     var businessCustomerinvoicecode1 = $('input[name="businessCustomerinvoicecode1"]').val();
     var aviation_id = '${aviation_id}';
     var mainNumber = '${mainNumber}';
     
     var jsdata = {
             startDate : startDate,
             endDate : endDate,
             businessCustomerinvoicecode1 : businessCustomerinvoicecode1,
             aviation_id : aviation_id,
             mainNumber : mainNumber,
             isbd : 2,
     } 
     var jsd = JSON.stringify(jsdata); 
        //    jsd就是打包的参数

//后台取值

String jsd = request.getParameter("jsd");
        try {   

            JSONObject json = JSONObject.fromObject(jsd);
            String aviation_id = json.getString("aviation_id");
            String mainNumber = json.getString("mainNumber");
            String startDate = json.getString("startDate");
            String endDate = json.getString("endDate"); 
            String isbd = json.getString("isbd"); 
            String businessCustomerinvoicecode1 = json.getString("businessCustomerinvoicecode1");