class Foo {
 void bar() {
  try {
   // do something
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
}

public class Main {
 private static final Log _LOG = LogFactory.getLog( Main.class );
 void bar() {
  try {
  } 
   catch( Exception e ) {

   _LOG.error( e ); //错误

  _LOG.error(e.getMessage()) //错误


 } catch( OtherException oe ) {
   _LOG.error( oe.getMessage(), oe ); //正确
  }
 }
}

    @ResponseBody
    @RequestMapping(value = "search", method = RequestMethod.POST)
    public DataTable search(HttpServletRequest request, String acquirerId,String channelName,String providerId) {
        logger.info("entering ChannelController search, with parameter acquirerId [{}], channelName [{}], providerId [{}]", acquirerId, channelName, providerId );
        Pagination<ChannelVO> pagination = null;
        int pageNum = getPageNum();
        int pageSize = getPageSize();
        ChannelBean filterBean = new ChannelBean();
        filterBean.setAcquirerId(acquirerId);
        filterBean.setChannelName(channelName);
        filterBean.setChannelProviderId(providerId);
        filterBean.setIsdelete(0);
        pagination = POJOBuilder.copyProperties(ChannelVO.class,
                channelService.retrieveBy(filterBean, pageNum, pageSize));
        logger.info("leaving ChannelController search");
        return createDataTalbe(pagination, request);
    }