关于接口调用的日期格式化问题

这两天改bug时候遇到一个很奇怪的问题，暂时没找到具体原因，先记录下来。

public class AirTicketResourceBO implements Serializable{
private static final long serialVersionUID = 5469201963274216101L;

private AirTicketResource po;
private List<AirTicketLeg> legList;
private SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
private SimpleDateFormat sdfTime = new SimpleDateFormat("yyyy-MM-dd HH:mm");
private SimpleDateFormat legFormat = new SimpleDateFormat("HH:mm");

public String getStartDate(){
System.out.println("----------------------------------------------------"+DateUtils.format(this.po.getStartDate()));
System.out.println("----------------------------------------------------"+DateUtils.format(po.getStartDate(), "yyyy-MM-dd"));
return DateUtils.format(po.getStartDate(), "yyyy-MM-dd");
//      return DateUtils.format(this.po.getStartDate());
}
public String getEndDate(){
if (this.po.getEndDate()==null){return "";}
//      return DateUtils.format(this.po.getEndDate());
return DateUtils.format(po.getEndDate(), "yyyy-MM-dd");
}

...
public String getLegHtml() throws ParseException{
if (this.legList == null){return "";}
StringBuffer sb = new StringBuffer("<table class='air_ticket_leg'>");
for(int i=0; i<this.legList.size(); i++){
AirTicketLeg leg = this.legList.get(i);
sb.append("<tr><td width='75'>").append(DateUtils.format(leg.getDepDate(),"yyyy-MM-dd")).append("</td><td>");
sb.append(leg.getAirCode()).append("</td><td>");
sb.append(leg.getDepCity()).append("-").append(leg.getArrCity()).append("</td>");
String depTime=(leg.getDepTime()==null)?"":DateUtils.format(leg.getDepTime(),"HH:mm");
String arrTime=(leg.getArrTime()==null)?"":DateUtils.format(leg.getArrTime(),"HH:mm");
sb.append("<td>").append(depTime).append("-").append(arrTime).append("</td></tr>");
}
sb.append("</table>");
//格式化方式对比
//      for(int i=0; i<this.legList.size(); i++){
//          AirTicketLeg leg = this.legList.get(i);
//          sb.append("<tr><td width='75'>").append(sdf.format(leg.getDepDate())).append("</td><td>");
//          sb.append(leg.getAirCode()).append("</td><td>");
//          sb.append(leg.getDepCity()).append("-").append(leg.getArrCity()).append("</td>");
//          String depTime=(leg.getDepTime()==null)?"":legFormat.format(leg.getDepTime());
//          String arrTime=(leg.getArrTime()==null)?"":legFormat.format(leg.getArrTime());
//          sb.append("<td>").append(depTime).append("-").append(arrTime).append("</td></tr>");
//      }

return sb.toString();

}

//dubbo接口
@Override
public TicketListResult ticketList(Integer bizId, Integer id) {

AirTicketResource resourcePo = airTicketResourceBiz.findResource(id, bizId);
AirTicketResourceBO resourceBo = new AirTicketResourceBO(resourcePo);
resourceBo.setLegList(airTicketResourceBiz.findLegsByResourceId(resourceBo.getPo().getId()));
List<AirTicketRequest> requestList = airTicketRequestBiz.findRequestsByResource(id, bizId);
List<AirTicketRequestBO> boList = new ArrayList<AirTicketRequestBO>();
for (int i=0; i<requestList.size(); i++){
AirTicketRequest po = requestList.get(i);
po.setResource(resourcePo);
AirTicketRequestBO bo = new AirTicketRequestBO(po);
bo.setGroupOrder(groupOrderBiz.findById(po.getGroupOrderId()));
bo.go.setGroupOrderGuestList(groupOrderGuestBiz.selectByOrderId(po.getGroupOrderId()));
boList.add(bo);
}

TicketListResult result = new TicketListResult();
result.setResourceBo(resourceBo);
result.setBoList(boList);
return result;
}

//Controller方法
@RequestMapping("ticketList.htm")
/* @RequiresPermissions(PermissionConstants.AIR_TICKET_RESOURCE) */
public String ticketList(HttpServletRequest request, HttpServletResponse reponse, ModelMap model, Integer id){
Integer bizId = WebUtils.getCurBizId(request);
TicketListResult result = requestFacade.ticketList(bizId, id);
model.addAttribute("resource", result.getResourceBo());
model.addAttribute("boList", result.getBoList());
return "airticket/ticket_list";
}

修改前的输出结果：

dubbo接口：

<table class='air_ticket_leg'><tr><td width='75'>

2017-02-02
----------

</td><td>MU5734</td><td>昆明-丽江</td><td>

19:40-20:35
-----------

</td></tr></table>

controller方法：

<table class='air_ticket_leg'><tr><td width='75'>

17-2-2 上午12:00
--------------

</td><td>MU5734</td><td>昆明-丽江</td><td>

17-2-2 下午7:40-17-2-2 下午8:35
---------------------------

</td></tr></table>

修改前是使用PO对象内部定义的

SimpleDateFormat

类，修改后使用的自定义工具类

DateUtils

，但是结果完全不一样。

而另一个系统中的

AirTicketResourceBO

类放在web工程中，没有实现序列化接口，格式化结果没有问题。