在fullcalendar中不显示DB中的事件

我是第一次尝试在fullcalendar（v2.0.0）中更新来自DB的事件。这是我试过的代码，

$('#calendar').fullCalendar({ editable: true, events:"/FullcalendarProject/FullCalendarChecking", eventDrop : function(event,revertFunc){ //here my $ajax(){ update DB } } }); 

FullCalendarChecking.java

 protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { List l = new ArrayList(); PreparedStatement st = null; ResultSet rst = null; Connection con = null; try { Class.forName("com.mysql.jdbc.Driver"); con = DriverManager.getConnection("jdbc:mysql://localhost:3306/raptor1_5","root",""); String query="select * from tblplanner where User_id=?"; st = con.prepareStatement(query); st.setString(1, "112"); rst =st.executeQuery(); String prepand="{title: "; String st1="start: "; String postpand="}"; while(rst.next()) { System.out.println("entered..."); String plannedDate =rst.getString("date"); // this will be start in fullcalendar String plannedChapter =rst.getString("chapter"); // this will be title in fullcalendar System.out.println(plannedDate); String afterchange =prepand+"'"+plannedChapter+"'"+","+st1+"'"+plannedDate+"'"+postpand; l.add(afterchange); } } catch(Exception e) { e.printStackTrace(); } finally { try{ con.close(); rst.close(); } catch(Exception e) { e.printStackTrace(); } } System.out.println(l); response.setContentType("application/json"); response.setCharacterEncoding("UTF-8"); PrintWriter out = response.getWriter(); out.println(new Gson().toJson(l)); } 

输出JSON：

 ["{title: \u0027Plants\u0027,start: \u00272015-04-28\u0027}","{title: \u0027Plants\u0027,start: \u00272015-05-10\u0027}","{title: \u0027Plants\u0027,start: \u00272015-05-12\u0027}","{title: \u0027Plants\u0027,start: \u00272015-05-13\u0027}","{title: \u0027Plants\u0027,start: \u00272015-05-08\u0027}","{title: \u0027Animals\u0027,start: \u00272015-05-12\u0027}"] 

为什么所有的事件都在今天的日期显示并显示当前时间而不是标题？

我在哪里做错了？