Ext.Ajax.request

function create(){
        var itstate = $("#myselect").val();
         Ext.Ajax.request({
                url: '/servlet/AccountManagement?action=create',
                params: {itstate: itstate },
                method: 'POST',
                success: function (response,data) {
                     var json = Ext.util.JSON.decode(response.responseText);
                     var msg = json.msg;
                     var flag = json.success;
                     Ext.MessageBox.alert(flag, msg);
                     /**跳转到新建账单页面**/
                },
                failure: function (response) {
                    var json = Ext.util.JSON.decode(response.responseText);
                    var msg = json.msg;
                    var flag = json.failure;
                    Ext.MessageBox.alert(flag, msg);
                }
         })
    };

JSONObject data = new JSONObject();
try{
    data.put("success", "成功");
    data.put("msg", "成功生成");
} catch (SQLException e) {
    data.put("failure", "异常");
    data.put("msg", "出现未知异常，账期创建失败");
    e.printStackTrace();  
}