struts 构架 收到信息，查询数据库后，返回信息

'---------------------------------------------------------------<action name="searchDate" method="searchDate" class="com.k.ccmanage.action.GeneralAction"><result type="json"><param name="root">result</param></result></action>'---------------------------------------------------------------public String searchDate(){result.setSuccess(true);if(mid == -5){result.setmessage(udao.getEmail(code));}else{result.setmessage("查找成功!");}return SUCCESS;}'---------------------------------------------------------------public String getEmail(String code){Statement stmt;try {stmt = ConDB.getConn().createStatement();String s = "SELECT * FROM 用户信息 WHERE 员工编号 = "+code;ResultSet rs = stmt.executeQuery(s);if(rs.next()){return rs.getString("邮箱");}} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}return null;}'---------------------------------------------------------------