@Ellen翔 新增按钮录的BS 就是点完按钮后执行的服务端逻辑.
 按钮切分成几个部分:
 1.Button 包括按钮的渲染,按钮的事件
 2.Dialog 点按钮以后是跳一个页面,还是直接异步请求服务端?,如果是异步请求服务端就没有弹Dialog这茬
 3.服务端 如果有跳页面的需求,就是两个方法 一个 toXxxx 否则就只有 一个 doXxxx
 
 上面出现调用两次 就是因为 根本就没有弹Dialog的需求,你却弹了Dialog,(可这里又执行的是,do的逻辑),所以就乱套了.

public void cancelReviewNewAgreement() throws Exception {
 		String xdids = getPara(0);
 		String xdnames=getPara(1);
         System.out.println("com.oss.product.ReviewController.cancelReviewNewAgreement> xdids=[" + xdids + "]"+"xdnames=["+xdnames+"]");
         String xdidlist[]=xdids.split(",");
 		String xdnameslist[]=xdnames.split(",");
 		for(int i=0;i<xdidlist.length;i++){
 			Agreement agreement=new Agreement();
 			agreement.set("xdid", xdidlist[i]);
 			agreement.set("xdname", xdnameslist[i]);
 			agreement.save();
 		}
         renderText("                 新增成功!          \n\n\n  请确定返回后点快速查询刷新表单!");
 	}

按钮ui：/review/btn/cancelReviewNewAgreement.html
 bs：/review/cancelReviewNewAgreement

html：
 
 <a href="javascript:void(0);" class="easyui-linkbutton" data-options="iconCls:'${button.icon!}',plain:true"
 
 onclick="NewAgreement()">
 
 ${button.name!}
 
 </a>
 
 <script type="text/javascript">
 
 //弹出Dialog
 
 var saveAgreement = function(name, url, width, height) {
 
 if(!width){
 
 width = 920;
 
 }
 
 if(!height){
 
 height = $(window).height() * 0.9;
 
 }
 
 // 弹出窗口
 
   var dialog = parent.sy.modalDialog({
 
   title : name,
 
   url : url,
 
   buttons : [ {
 
   text : '  确 定  ',
 
   handler : function() {
 
   dialog.dialog('close');
 
   }
 
   }  ]
 
   }, width, height);
 
 };
 
 var NewAgreement = function() {
 
 var $grid = $('#${gridId}');
 
     var rows = $grid.datagrid('getSelections');
 
     var num = rows.length;
 
     if (num == "0") {
 
      $.slideMsg("请至少选择一条记录！");
 
         return;
 
     }
 
     var vals = [];
 
     var xdnames = [];
 
     for (var i = 0; i < rows.length; i++) { //组成一个字符串，ID主键用逗号隔开
 
      vals.push(rows[i]['xdid']);
 
      xdnames.push(rows[i]['xdname']);
 
     }
 
 saveAgreement('${object.name}', '/review/cancelReviewNewAgreement/' + vals.join(',')+'-'+xdnames.join(','), 320, 200);
 
 if($grid.context.URL.indexOf('/single_tree') != -1){
 
 $grid.treegrid('load');
 
 } else {
 
 $grid.datagrid('load');
 
 }
 
 };
 
 </script>

com.oss.product.ReviewController.cancelReviewNewAgreement> xdids=[1000048]xdnames=[11]
 Sql: insert into agreement(id, xdid, xdname) values(seq_agreement.nextval, ?, ?)
 
 JFinal action report -------- 2018-01-10 16:53:50 ------------------------------
 Controller  : com.oss.product.ReviewController.(ReviewController.java:1)
 Method      : cancelReviewNewAgreement
 UrlPara     : 1000048-11
 Interceptor : com.eova.interceptor.LoginInterceptor.(LoginInterceptor.java:1)
 --------------------------------------------------------------------------------
 Sql: select * from eova_object where code = ?
 com.oss.product.ReviewController.cancelReviewNewAgreement> xdids=[1000048]xdnames=[11]
 Sql: insert into agreement(id, xdid, xdname) values(seq_agreement.nextval, ?, ?)
 Sql: select * from eova_field where object_code = ? order by order_num
 
 JFinal action report -------- 2018-01-10 16:53:50 ------------------------------
 Controller  : com.oss.product.ReviewController.(ReviewController.java:1)
 Method      : cancelReviewNewAgreement
 UrlPara     : 1000048-11
 Interceptor : com.eova.interceptor.LoginInterceptor.(LoginInterceptor.java:1)

@Ellen翔 对按钮的工作机制和运行流程理解上出现了偏差,所以才存在这个问题,实际实现比你想的要简单,代码也要少很多:
 请仔细看这个文档:
 http://doc.eova.cn

@Ellen翔 正确的思路是
 点击按钮触发事件{
 
    获取选中行(单/多都可以)
    $.post(异步提交服务端){
        弹执行提示 成功,还是失败!
    }
 
 }